1Trabajo final Maestria Industrial.ppt

TRABAJO FINAL

CURSCO: Sistemas de SeguridadDOCENTE : Alberto Ochoa Flores

ALUMNO : Leonidas Cruz Choque

AREQUIPA-PERU2012

Procedimiento de Ingreso a Planta de Molibdeno

1. Objetivo y Alcance

*

OBJETIVO

Normar el ingreso a todas las instalaciones de la Planta de Molibdeno (Zona Restringida).ALCANCE

A raz del ultimo accidente fatal que se present en la planta de Molibdeno, se revisaron los procedimientos que se aplicara a toda persona que requiera ingresar a la Planta de Molibdeno.

Diagnostico Situacional Actual

Actualmente las personas que ingresan a la planta de Molibdeno y segn los procedimientos:* Slo se ingresa con EPPs bsicos y no menciona con que tipo de respirador.* No existe alarmas que indiquen con la generacin del gas sulfuro de hidrogeno H2S (Gas letal sobre los 200 ppm) que estn por encima de los 10 ppm.* No es un rea restringida.* No se ingresa con detector de gases

Ubicacin de la Planta Concentradora

Las instalaciones del proceso estn diseadas para tratar un promedio de 108,000 t/d de mineral de sulfuro primario y producir concentrados de cobre y de molibdeno por separado. El diseo del proceso se basa en la tecnologa actual y en los tamaos de equipo ms grandes existentes y disponibles. Las instalaciones estn localizadas entre la mina Cerro Verde y la presa para relaves ubicada en la Quebrada Enlozada

*PROCESO PRODUCTIVO El objetivo de la Planta de Molibdenita, es flotar los sulfuros de molibdeno y deprimir los de cobre.

Existen varios reactivos depresores de sulfuros de cobre, tales como: Hidrosulfuro de Sodio (NaHS), Pentasulfuro de Fsforo (P2S5), Hipoclorito de Sodio (NaClO), Cianuro de Sodio (NaCN), etc. En SMCV se utiliza el NaSH.

Adicionalmente, se utiliza CO2 y N2. El dixido de carbono se adiciona para bajar el pH de la pulpa y con ello aumentar la velocidad de flotacin.El Nitrgeno se usa para disminuir la cantidad de adicin del NaHS, debido a que esta en presencia del oxigeno se oxida y requiere agregar mas.

*PROCESO PRODUCTIVO

PLANTA DE MOLIBDENITAQumica de la Generacin de H2SPROCESO DE CONCENTRACIN

Separacin Cobre - MolyDEPRESIN DE SULFUROS DE COBRE

El objetivo de la Planta de Molibdenita, es flotar los sulfuros de molibdeno y deprimir los de cobre.

El reactivo mas usado es el NaHS, considerando aspectos de seguridad y ambientales.

Definicin de pH Factor pH

El pH es un valorque se usa para indicar la acidez o alcalinidad de una sustancia.

Velocidad Flotacin Molibdenita en funcin al pH OptimizationLab Flotation TestsSabemos que la velocidad de flotacin de molibdenita aumenta a menor pH

Chart1

000

34.694213019233.565412654317.6285391169

52.001652679656.900710276136.8122108591

78.8740919281.989345289764.4731185981

95.52464855794.89413629388.5242496661

98.234687697198.411489136696.8553173017

pH 9.8 w/air

pH 9.8 w/N2

pH 12.1 w/air

Lab Flot Time, minutes

Mo Recovered, %

P2685K: FMCG--Cerro Verde Effect of pH on Mo 1st Cleaner Kinetics

Test Outline

P-2685K: FMCG -- Cerro Verde Sulfide Project

Outline of On-Site Molybdenum Flotation Testing to Assist in Molybdenum Plant Optimization

DescriptionStatus (Jan 17)

Pulp Density Test Series

Rougher Feed: 5 tests50, 40, 30, 20, 10% solids targetsComplete*

Moly Thickner Underflow: 4 tests30, 20, 10, 5% solids targetsComplete*

Na2SiO3 Test Series

Moly Thickener Underflow at 20% solids target: 3 tests3000, 1000, 0 gm Na2SiO3 per tonneComplete*

of moly thickener feed

High Shear Conditioning Tests on Moly Thickener Underflow

Moly Thickener Underflow at 20% solids target: 3 tests3000, 1000, 0 gm Na2SiO3 per tonneComplete*

of moly thickener feed. High shear

condition with Na2SiO3 & NaHS for 10 &

20 min respectivey before flotation.

Assay Screen Analysis of Moly Thickener Underflow

Moly thickener underflow will be assay screened for Mo, Cu, Fe, Insol at 200, 400, 500, 635 Tyler meshComplete*

Assay Screen Analysis of Moly Rougher Feed

Moly thickener feed will be assay screened for Mo, Cu, Fe, Insol at 200, 400, 500, 635 Tyler meshComplete*

Assay Screen Analysis of 1st Cleaner Feed

1st Cleaner feed will be assay screened for Mo, Cu, Fe, Insol at 200, 400, 500, 635 Tyler meshComplete*

Evaluate Effect of Flotation pH on 1st Cleaner Kinetics

1st cleaner feed floated at as-received pH of 12.1 and at pH 9.5, adjusted with CO2

Both air and N2 flotation gas will be evaluatedComplete*

P-4000 Defoamer Test Series

1st Cleaner Feed at 20 - 25% solids target: 4 tests400, 200, 100, 0 gm P-4000 per tonne ofComplete*

1st cleaner feed

Activated Carbon Addition Test Series

Rougher Conditioner Feed at 40% solids target0 and 1000 g/t pulverized activated carbonComplete*

Added prior to rougher conditioning.

Nalco 7871 Addition Tests

Rougher Conditioner Feed at 40% solids target0 and 10 g/t Nalco 7871 flocculantComplete*

Added prior to rougher conditioning.

Laboratory Flotation Kinetics on Moly Plant Circuit Survey Samples

The following pulp samples will be subjected to laboratory kinetic flotation tests during an actual moly plant survey:

Rougher Feed

1st Cleaner FeedAll samples will be floated at as-received pH (12?) and at pH 9.5Complete*

2nd Cleaner Feedadjusted with CO2

Cleaner Scavenger FeedSamples will also be floated at 29 & 20% solids

5th Cleaner Feed

*Complete, Assays

Pending

Notes:1All flotation tests will be performed in kinetic format with con samples taken at the following time intervals

2, 4, 8, 16, 32 minutes

2All flotation products will be assayed for Mo, Cu, Fe, Insol

3Slurry weights and oven dried final weights will be obtained for all test products including flotation feed

Volume of wash water and makeup water will be measured for each test

4Tests will be performed in a Denver 4 liter laboratory cell

5NaHS will be used to maintain pulp ORP at -525/-550 mv if possible

6N2 will be used in tests on rougher feed, air will be used in tests on all other feed streams

7An assay screen analysis of each batch of test feeds will be taken.

2nd Cl Kinetics vs %solids

Test Key:% SolidsTest No

5.667

11.166

22.065

32.764

2nd Cl Kinetics vs %solids

0000

47.245848780824.975168913.48735045987.505852673

70.860795687639.78970811131.694077657915.2337862251

91.451877441763.62489543454.03869740129.0127422579

98.271828158190.111917763878.872165164948.3500807081

99.456484470499.118835817995.720324174874.3879012689

5.6% solids

11% solids

22% solids

32.7% solids


Mo Recovered, %

P2685K: FMCG--Cerro Verde Effect of Flotation Pulp Density on Mo 2nd Cleaner Kinetics

2nd Cl Kinetics HiShear Na2SiO3

0000

4.7881302493.27427626952.55598837352.5581061269

7.96616753035.51078331996.32922750085.3227712102

12.869425059.239265596311.620623673910.3096654274

19.612706687414.275912471819.403707525118.3630056914

25.097421601923.076361825128.632421557228.7534304999

5.6% solids

11% solids

22% solids

32.7% solids


Cu Recovered, %


Ro Kinetics vs %solids

0000

16.31281640498.75045173684.28022398923.3189323424

24.729735656914.18961087099.69115585656.9547896311

33.875843457921.964822397317.530815037513.498227627

42.435657118131.377845054129.380544941924.9513213433

47.486882108742.427699042943.910398697140.0997116364

5.6% solids

11% solids

22% solids

32.7% solids


Fe Recovered, %


1st Cl Kinetics vs pH

0000

16.19284004718.04677087314.31156664413.8076870353

26.65923740314.276209961811.53636821747.8891337311

44.39196119926.304146968822.234368944615.2388764292

59.110434538645.200200953739.017127122126.2111707712

65.516841478864.841939108559.869742240241.9415984756

5.6% solids

11% solids

22% solids

32.7% solids


Insol Recovered, %


Template

4443.7543.7538.75

42.952611218643.081658291543.461370262438.494732577

41.088709677442.376738794442.185892116238.4972340426

38.471736414741.325026605240.308629119937.3493393889

36.863246599637.832669028637.090656322936.8656759907

5.6% solids

11% solids

22% solids

32.7% solids


Con Assay, %Mo


T64

1.982.563.75.81

2.14409090912.66311557793.87317784265.9172123177

2.56743369182.74658423494.04839834026.0182638298

3.40926296062.92206456194.42537848616.2404426094

4.13047309283.93127251254.95119318966.2689595253

5.6% solids

11% solids

22% solids

32.7% solids


Con Assay, %Cu


T65

8.48.357.688.95

8.288278538.36909547747.35096209919.1797406807

8.41552688177.96919629067.57020746899.3555744681

9.18554653347.83863426758.305722564310.0677456647

9.73185097588.82158547399.411764382810.3804005086

5.6% solids

11% solids

22% solids

32.7% solids


Con Assay, %Fe


T66

7.226.886.789.4

7.73671179887.54452261317.66897959189.53273906

9.54903225818.55109737258.41453941919.6691574468

11.079038101210.11738914519.66657732719.6820445912

11.626221170912.07991733111.24633255539.9393918203

5.6% solids

11% solids

22% solids

32.7% solids


Con Assay, %Insol


T67

Test Key:Na2SiO3Hi ShearTest No

0no65

0yes72

1000no68

1000yes70

3000no69

3000yes71

T67

000

13.487350459821.752383739419.7849043036

31.694077657938.868235467136.7292500256

54.03869740161.440028882163.2714868493

78.872165164985.461159000388.7673611997

95.720324174897.215062898898.7884830597

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Mo Recovered, %

P2685K: FMCG--Cerro Verde Effect of Na2SiO3 on Mo 2nd Cleaner Kinetics

T68

43.7543.541

43.461370262442.362525458240.5325271059

42.185892116241.263930722939.8752083829

40.308629119939.108773730137.4352191235

37.090656322936.610696692535.1945341949

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Con Assay, %Mo


T69

000000

13.487350459821.752383739419.784904303617.786591092224.034734779620.8355229103

31.694077657938.868235467136.729250025631.124210460443.535567977339.289961107

54.03869740161.440028882163.271486849347.240903348568.107058620463.8490181483

78.872165164985.461159000388.767361199771.166629221393.301245334488.5481066304

95.720324174897.215062898898.788483059796.213707912997.682899393897.7074650436

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3

1000g/t Na2SiO3 Hi Shear




Mo Recovered, %

P2685K: FMCG--Cerro Verde Effect of Hi Shear Conditioning on Mo 2nd Cleaner Kinetics

T70

43.7543.5414545.546.75

43.461370262442.362525458240.532527105943.893550078743.984468562944.9103773585

42.185892116241.263930722939.875208382943.228649200442.55983796343.2133813307

40.308629119939.108773730137.435219123541.898971103339.472104685839.6774326101

37.090656322936.610696692535.194534194937.441144552237.898821500436.8981160826

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3



0/t Na2SiO3 Hi Shear


Con Assay, %Mo


T71

000

2.55598837353.60612372474.1114969877

6.32922750086.92215976427.9727442316

11.620623673911.842636461614.3208322474

19.403707525119.022035143322.9550265047

28.632421557225.205922271629.2593882595

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Cu Recovered, %


T72

000

4.28022398926.21988440726.4785171919

9.691155856512.042684930612.8666606596

17.530815037520.522996067823.1528458215

29.380544941932.767040979737.4340128869

43.910398697143.680605777847.6245405056

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Fe Recovered, %


T73

000

4.311566644119.0108305495.8169027597

11.536368217431.950161978511.6456400729

22.234368944639.716664597322.9357455512

39.017127122150.204871771741.7878377992

59.869742240258.050331858458.0168920676

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Insol Recovered, %


T74

000000

2.55598837353.60612372474.11149698772.6270713263.61950817942.9470499607

6.32922750086.92215976427.97274423164.87597401957.12458608356.3449368719

11.620623673911.842636461614.32083224748.082739693612.133521603811.8362323319

19.403707525119.022035143322.955026504713.551103038119.763861050220.6259263655

28.632421557225.205922271629.259388259524.999935599422.944838399227.0710897875

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3





Cu Recovered, %


T75

000000

4.28022398926.21988440726.47851719193.60949465475.39555587264.132802135

9.691155856512.042684930612.86666065966.821606223710.80055188519.1796843122

17.530815037520.522996067823.152845821511.315881305619.020123677317.3598263159

29.380544941932.767040979737.434012886919.684934957432.92298451131.6851181131

43.910398697143.680605777847.624540505639.944201512339.079299722543.0336594597

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3





Fe Recovered, %


T76

3.73.354.01

3.87317784263.50469653774.1408924103

4.04839834023.69478664664.2477375566

4.42537848614.04374893114.5561641434

4.95119318964.40959605914.9060123856

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Con Assay, %Cu


T77

7.687.257.95

7.35096209917.65039103878.4081234362

7.57020746898.03402610448.6405406049

8.30572256438.74009064489.3483521912

9.41176438289.588184377210.0471136241

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Con Assay, %Fe


T78

6.7820.146.22

7.668979591818.44743788196.6313761468

8.414539419114.13083835347.4585853775

9.666577327112.17102787759.0933864542

11.246332555311.581241379310.6652746365

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3


Con Assay, %Insol


T79

000000

4.311566644119.0108305495.81690275975.65169795987.93073680646.5890344565

11.536368217431.950161978511.645640072910.818927839915.291258656313.8849155803

22.234368944639.716664597322.935745551217.862689762326.949831933126.1454211231

39.017127122150.204871771741.787837799230.388892664548.092738598746.4095706167

59.869742240258.050331858458.016892067654.959979424455.874149859162.6445093965

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3





Insol Recovered, %


T80

3.73.354.013.073.142.99

3.87317784263.50469653774.14089241033.17621919243.29854790423.2794339623

4.04839834023.69478664664.24773755663.41632187823.47458333333.622296425

4.42537848614.04374893114.55616414343.6850919443.83162200284.1791140697

4.95119318964.40959605914.90601238564.49363478514.07943661974.6226250173

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3





Con Assay, %Cu


T81

7.687.257.955.385.944.96

7.35096209917.65039103878.40812343625.66767697956.34569610785.6124528302

7.57020746898.03402610448.64054060496.10039469216.91193055566.2844786495

8.30572256438.74009064489.34835219126.82774080568.09991067237.5941551611

9.41176438289.588184377210.04711362419.15760671398.81722908888.6924975758

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3





Con Assay, %Fe


T82

6.7820.146.227.267.727.34

7.668979591818.44743788196.63137614687.74683796547.94383233537.8796226415

8.414539419114.13083835347.45858537758.2992378368.65955555568.7853028798

9.666577327112.17102787759.09338645429.084054290710.46198401510.3244970414

11.246332555311.581241379310.665274636510.8591694411.146789307311.7450948885

0g/t Na2SiO3

1000g/t Na2SiO3

3000g/t Na2SiO3





Con Assay, %Insol


T83

Test Key:% SolidsTest No

9.677

19.775

30.076

43.873

50.974

T83

00000

78.575971429773.889008085559.478554424545.826053127227.7785101846

88.609861698694.596079751584.031152126670.984476815743.2267838668

92.815874767997.792608290295.203968441990.93406152573.2678263314

95.85440057398.72492911498.55171812197.564190567891.5720833834

99.172543629298.947707658698.525594359197.2479673292

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Mo Recovered, %

P2685K: FMCG--Cerro Verde Effect of Flotation Pulp Density on Mo Rougher Kinetics

T84

34.2536.2532.7528.7523.5

30.626651982429.665936952728.533555018125.2937523.8478647687

28.008653846223.988561643824.800324675321.225690890520.1657789614

23.21188271620.089318181819.852833572518.525811823517.6402609506

16.706259642518.125277234217.664110062915.1516645729

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Con Assay, %Mo


T85

00000

0.99864225460.93123594571.13044850341.33228243551.2807652828

1.46150501391.98574814062.11743212682.58424527091.9086105638

1.86801919013.24751824863.02968652334.31549675224.1945309591

2.92352435734.5425740464.55480167485.49056532036.3199745002

6.31826393215.34521130765.85209703438.0839889794

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Cu Recovered, %


T86

00000

1.38226082661.0943464041.05567216371.2211645691.213048647

2.03064912592.39421763032.04872527752.37223155621.8183454047

2.61352875623.85464053923.0905160034.09400675213.9622670165

3.89961982645.33600984194.89975072955.48109996645.9959831786

7.15352956265.72732344385.97819892677.8651353517

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Fe Recovered, %


T87

00000

6.75627408597.54409662646.58558181863.91858691272.6381889629

9.218410251612.322511254111.9090066357.81152629894.2717427703

10.761036438315.193587068516.517917345513.39190691839.7046051572

13.247485665917.388238465820.651997832217.199970958715.4788413411

19.716253921.993010492318.239888323519.810509439

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Insol Recovered, %


T88

6.586.259.0212.1515.43

7.63594713668.519246935210.419093107613.38560937514.9951690391

8.521115384610.897876712311.436808905414.642681678616.4407856192

10.701635802512.645397727313.296355810615.155087427117.3378285182

14.560545625614.188897586415.251367924517.936718593

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Con Assay, %Cu


T89

9.638.039.712.2515.8

11.21806167411.230035026311.608899637213.515851562515.4451779359

12.605576923114.142123287713.434610389615.279892528116.7905681314

15.093364197516.240056818216.471154949816.641444629517.7837061199

18.02356538117.507429876117.137582547218.8671356784

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Con Assay, %Fe


T90

11.9814.7212.1810.269.08

12.961409691615.369387040313.582926239411.6165781259.5878825623

13.2114.822821917814.453061224513.045783009210.8667731913

13.0514.072340909113.974060258213.630349708612.1311338925

13.209444967113.532120026113.647633647812.5573065327

9.6% solids

19.7% solids

30% solids

43.8% solids

50.9% solids


Con Assay, %Insol


T91

Test Key:pHFlot gasTest No

9.8air82

9.8N283

12.1air78

T91

000

34.694213019233.565412654317.6285391169

52.001652679656.900710276136.8122108591

78.8740919281.989345289764.4731185981

95.52464855794.89413629388.5242496661

98.234687697198.411489136696.8553173017

pH 9.8 w/air

pH 9.8 w/N2

pH 12.1 w/air


Mo Recovered, %


T92

43.542.2540.25

42.453367875640.512544348739.7226027397

40.524728260938.365922718238.5069502949

37.102095316435.969373988136.0371088142

34.159575772432.962207916132.4426529648

pH 9.8 w/air

pH 9.8 w/N2

ph 12.1 w/air


Con Assay, %Mo


T93

000

1.79179905981.75703610291.0250507893

2.6797177613.17916662722.2349024834

4.37223952464.89576954424.0697063683

6.33321566866.16308063416.2993684244

8.10327158727.77982170298.9627070727

pH 9.8 w/air

pH 9.8 w/N2

pH 12.1 w/air


Cu Recovered, %


T94

000

2.26462866852.21097808221.1752097813

3.60410554474.03469002832.5352485835

6.11063404626.48673271844.7641309742

9.09695756528.7495258377.7178907764

11.851933181911.53230916911.7130573257

pH 9.8 w/air

pH 9.8 w/N2

pH 12.1 w/air


Fe Recovered, %


T95

000

6.49347855467.16516714954.1568394414

11.201695496314.06073258159.3541796871

21.196307661324.580242195118.4623696676

34.259889321934.522218857430.8094628239

39.748109119341.30624016139.2415806891

pH 9.8 w/air

pH 9.8 w/N2

pH 12.1 w/air


Insol Recovered, %


T96

5.195.375.55

5.05393782385.49596553475.7187671233

5.18961956525.56247501675.7639679865

5.68267871825.67218294666.08110824

6.50959293776.32701716747.1191826128

pH 9.8 w/air

pH 9.8 w/N2

ph 12.1 w/air


Con Assay, %Cu


T97

6.937.156.75

7.18119170987.38021287386.8818493151

7.66259782617.79832111937.1578559393

8.62349219398.52049649227.9036032156

10.05867582159.92370052469.869655091

pH 9.8 w/air

pH 9.8 w/N2

ph 12.1 w/air


Con Assay, %Fe


T98

8.3810.34509883439.8

9.412677029411.885822784810.4223287671

11.209347826113.522191041611.3857371525

13.696302382914.296871721512.950456503

14.22651299662413.5722749823

pH 9.8 w/air

pH 9.8 w/N2

ph 12.1 w/air


Con Assay, %Insol


PROJECT No.P-2685K

DATE:

BY:PT

TEST No.NAME:Freeport McMoRan Copper and Gold Inc. - Cerro VerdeSample:

SlurryDryPercentAssayUnitsDistribution

ProductWeightWeightWeightMo%Cu%Fe%Insol%MoCuFeInsolMoCuFeInsol

Con.# 1 (0-2 min.)0.00000.0000.0000.0000.00.00.00.0

Con.# 2 (2-4 min.)0.00000.0000.0000.0000.00.00.00.0

Con.# 3 (4-8 min.)0.00000.0000.0000.0000.00.00.00.0

Con.# 4 (8-16 min.)0.00000.0000.0000.0000.00.00.00.0

Con.# 5 (16-32min.)0.00000.0000.0000.0000.00.00.00.0Kinetics

Tail0.00000.0000.0000.0000.00.00.00.0Recovered, %Cum Con Assay, wt%

Total (calc.)5528.00.00.000.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0min.MoCuFeInsolMoCuFeInsol

Total (assay)00000

Con.# 1 (0-2 min.)0.00.000.0000.0000.000.000.00000.0000.0000.0000.00.00.00.020.00.00.00.00.000.000.000.00

Con 1+2 (0-4 min)0.00.000.0000.0000.000.000.00000.0000.0000.0000.00.00.00.040.00.00.00.00.000.000.000.00

Con. 1-3 (0-8 min.)0.00.000.0000.0000.000.000.00000.0000.0000.0000.00.00.00.080.00.00.00.00.000.000.000.00

Con. 1-4 (0-16 min.)0.00.000.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0160.00.00.00.00.000.000.000.00

Con 1-5 (0-32 min)0.00.000.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0240.00.00.00.00.000.000.000.00

FeedTotalTotalGrinding

OPERATIONSampleFlotFlotFlotFlotFlotDilutionWashProduct

TIME0-22-44-88-1616-32WaterWaterFeed

REAGENTS - kg/t test feedTotalUsedUsedRet.Pass

Pulp Slurry, gmmlmlMESH%%

Plant Water gm

NaHS0.000.000.000

+100

+150

NaHS, ml (20% w/w, 1.162)+200

+270

DenverDenverDenverDenverDenver+325

MACHINE4 lit4 lit4 lit4 lit4 lit+400

R.P.M.13001300130013001300+500

pH+635

% SOLIDS0.00.0-635

ORP, mv (Ag/AgCl)Total

Remarks:Process water pH =*- w/o air

P80=m

2030 North Redwood Road, Suite 70Salt Lake City, Utah 84116Phone: (801) 596-0430Fax: (801) 596-0425Email: [email protected]

PROJECT No.P-2685K

DATE:1/11/08

BY:PT

TEST No. 64NAME:Freeport McMoRan Copper and Gold Inc. - Cerro VerdeSample:Mo thick U flow taken Jan 11,2008

Flotation of Mo thickener underflow at 32.7% solids. Air flotation gas, no conditioning, NaHS to -550 mv



Con.# 1 (0-2 min.)256.390.65.0138.7505.8108.959.401.94260.2910.4490.4717.52.63.33.8

Con.# 2 (2-4 min.)260.194.55.2338.2506.0209.409.662.00010.3150.4920.5057.72.83.64.1

Con.# 3 (4-8 min.)439.7167.49.2638.5006.1309.559.823.56620.5680.8850.91013.85.06.57.3

Con.# 4 (8-16 min.)656.7253.014.0035.7506.55011.069.705.00480.9171.5481.35819.38.111.511.0

Con.# 5 (16-32min.)903.6338.318.7236.0006.32010.9410.406.73901.1832.0481.94726.010.415.115.7Kinetics

Tail4153.0863.447.7813.87516.98016.9515.046.62898.1128.0987.18525.671.259.958.1Recovered, %Cum Con Assay, wt%


Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)90.65.0138.7505.8108.959.401.94260.2910.4490.4717.52.63.33.827.52.63.33.838.755.818.959.40

Con 1+2 (0-4 min)185.110.2438.4955.9179.189.533.94280.6060.9400.97615.25.37.07.9415.25.37.07.938.495.929.189.53

Con. 1-3 (0-8 min.)352.519.5138.4976.0189.369.677.50901.1741.8251.88629.010.313.515.2829.010.313.515.238.506.029.369.67

Con. 1-4 (0-16 min.)605.533.5037.3496.24010.079.6812.51382.0913.3733.24448.418.425.026.21648.418.425.026.237.356.2410.079.68

Con 1-5 (0-32 min)943.852.2236.8666.26910.389.9419.25293.2745.4215.19174.428.840.141.93274.428.840.141.936.876.2710.389.94





Pulp Slurry, gm4147mlmlMESH%%

Plant Water gm1381

NaHS3.862.576.4301118.6

+100

+150

NaHS, ml (20% w/w, 1.162)302050+200

+270



R.P.M.13001300130013001300+500

pH11.511.711.91212.2+635

% SOLIDS32.720.8-635

ORP, mv (Ag/AgCl)-480-493-489-440-450*Total

Remarks:Process water pH = 7.2*-550 w/o air

P80=m


PROJECT No.P-2685K

DATE:1/11/08

BY:PT


Repeat test 64 at 22% solids



Con.# 1 (0-2 min.)209.587.07.8943.7503.7007.686.783.45140.2920.6060.53513.52.64.34.3

Con.# 2 (2-4 min.)304.9118.810.7743.2504.0007.118.324.65910.4310.7660.89618.23.85.47.2

Con.# 3 (4-8 min.)414.9155.714.1240.5004.2807.869.405.71800.6041.1101.32722.35.37.810.7

Con.# 4 (8-16 min.)554.6190.717.2936.7505.1409.7012.046.35490.8891.6772.08224.87.811.816.8

Con.# 5 (16-32min.)621.8176.115.9727.0006.60012.8816.204.31151.0542.0572.58716.89.214.520.9Kinetics


Total (calc.)5008.01102.8100.0025.59011.42014.1612.4125.590211.42014.15512.406100.0100.0100.0100.0min.MoCuFeInsolMoCuFeInsolpH

Total (assay)26.25011.35015.0912.200000010.4

Con.# 1 (0-2 min.)87.07.8943.7503.7007.686.783.45140.2920.6060.53513.52.64.34.3213.52.64.34.343.753.707.686.7811.1

Con 1+2 (0-4 min)205.818.6643.4613.8737.357.678.11060.7231.3721.43131.76.39.711.5431.76.39.711.543.463.877.357.6711.8

Con. 1-3 (0-8 min.)361.532.7842.1864.0487.578.4113.82861.3272.4822.75854.011.617.522.2854.011.617.522.242.194.057.578.4112

Con. 1-4 (0-16 min.)552.250.0740.3094.4258.319.6720.18362.2164.1594.84078.919.429.439.01678.919.429.439.040.314.438.319.6712.1

Con 1-5 (0-32 min)728.366.0437.0914.9519.4111.2524.49503.2706.2167.42795.728.643.959.93295.728.643.959.937.094.959.4111.2512.1






Plant Water gm2968

NaHS10.544.2114.7501444.2

+100

+150

NaHS, ml (20% w/w, 1.162)502070+200

+270



R.P.M.13001300130013001300+500

pH10.411.111.81212.112.1+635

% SOLIDS22.08.5-635

ORP, mv (Ag/AgCl)-388-450-478-478-472-470*Total


P80=m


0

0

0

0

0

0

pH

Flotation Time, min

Pulp pH

P2685K: FMCG--Cerro Verde pH Increase During Flotation of Mo Thick U'flow using Air. Test 65 @ 22% solids

PROJECT No.P-2685K

DATE:1/11/08

BY:PT


Repeat test 64 at 11% solids



Con.# 1 (0-2 min.)190.273.814.6143.7502.5608.356.886.39360.3741.2201.00525.03.38.88.0

Con.# 2 (2-4 min.)129.245.69.0342.0002.8308.408.623.79250.2560.7580.77814.82.25.46.2

Con.# 3 (4-8 min.)233.474.714.7941.2502.8807.3310.166.10170.4261.0841.50323.83.77.812.0

Con.# 4 (8-16 min.)315.487.817.3939.0003.3107.5513.586.78060.5751.3132.36126.55.09.418.9

Con.# 5 (16-32min.)382.556.811.2520.5008.94013.7021.822.30571.0061.5412.4549.08.811.019.6Kinetics



Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)73.814.6143.7502.5608.356.886.39360.3741.2201.00525.03.38.88.0225.03.38.88.043.752.568.356.88

Con 1+2 (0-4 min)119.423.6443.0822.6638.377.5410.18600.6301.9791.78439.85.514.214.3439.85.514.214.343.082.668.377.54

Con. 1-3 (0-8 min.)194.138.4442.3772.7477.978.5516.28781.0563.0633.28763.69.222.026.3863.69.222.026.342.382.757.978.55

Con. 1-4 (0-16 min.)281.955.8241.3252.9227.8410.1223.06841.6314.3765.64890.114.331.445.21690.114.331.445.241.332.927.8410.12

Con 1-5 (0-32 min)338.767.0737.8333.9318.8212.0825.37412.6375.9178.10299.123.142.464.83299.123.142.464.837.833.938.8212.08






Plant Water gm3632

NaHS27.619.204.600.0041.420998.2

+100

+150

NaHS, ml (20% w/w, 1.162)60201090+200

+270



R.P.M.13001300130013001300+500

pH11.411.611.811.912.0+635

% SOLIDS11.13.8-635



P80=m


PROJECT No.P-2685K

DATE:1/11/08

BY:PT


Repeat test 64 at 5.6% solids



Con.# 1 (0-2 min.)190.367.327.5544.0001.9808.407.2212.12120.5452.3141.98947.24.816.316.2

Con.# 2 (2-4 min.)122.136.114.7841.0002.4508.088.706.05850.3621.1941.28623.63.28.410.5

Con.# 3 (4-8 min.)17436.114.7835.7503.7808.7814.745.28270.5591.2972.17820.64.99.117.7

Con.# 4 (8-16 min.)191.720.68.4320.7509.11014.4021.441.74970.7681.2141.8086.86.78.614.7

Con.# 5 (16-32min.)206.39.03.688.25016.96019.4521.360.30390.6250.7170.7871.25.55.16.4Kinetics



Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)67.327.5544.0001.9808.407.2212.12120.5452.3141.98947.24.816.316.2247.24.816.316.244.001.988.407.22

Con 1+2 (0-4 min)103.442.3342.9532.1448.297.7418.17970.9073.5083.27570.98.024.726.7470.98.024.726.742.952.148.297.74

Con. 1-3 (0-8 min.)139.557.1041.0892.5678.429.5523.46241.4664.8055.45391.512.933.944.4891.512.933.944.441.092.578.429.55

Con. 1-4 (0-16 min.)160.165.5338.4723.4099.1911.0825.21212.2346.0207.26198.319.642.459.11698.319.642.459.138.473.419.1911.08

Con 1-5 (0-32 min)169.169.2236.8634.1309.7311.6325.51612.8596.7368.04799.525.147.565.53299.525.147.565.536.864.139.7311.63






Plant Water gm3928

NaHS95.139.51104.640807.5

+100

+150

NaHS, ml (20% w/w, 1.162)10010110+200

+270



R.P.M.13001300130013001300+500

pH11.111.411.611.711.8+635

% SOLIDS5.61.7-635



P80=m


PROJECT No.P-2685K

DATE:1/12/08

BY:PT


Repeat test 65 except add 1 kg Na2SiO3 per tonne of test feed prior to test



Con.# 1 (0-2 min.)331.4133.812.3043.5003.3507.2520.145.35050.4120.8922.47721.83.66.219.0

Con.# 2 (2-4 min.)284.8111.710.2741.0003.6908.1316.424.21010.3790.8351.68617.13.35.812.9

Con.# 3 (4-8 min.)421.4152.914.0639.5004.0008.657.205.55210.5621.2161.01222.64.98.57.8

Con.# 4 (8-16 min.)576.8186.317.1334.5004.79010.257.985.90860.8201.7551.36724.07.212.210.5

Con.# 5 (16-32min.)520.6125.811.5625.0006.11013.538.842.89120.7071.5651.02211.86.210.97.8Kinetics



Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)133.812.3043.5003.3507.2520.145.35050.4120.8922.47721.83.66.219.0221.83.66.219.043.503.357.2520.14

Con 1+2 (0-4 min)245.522.5742.3633.5057.6518.459.56060.7911.7274.16338.96.912.032.0438.96.912.032.042.363.507.6518.45

Con. 1-3 (0-8 min.)398.436.6241.2643.6958.0314.1315.11271.3532.9425.17561.411.820.539.7861.411.820.539.741.263.698.0314.13

Con. 1-4 (0-16 min.)584.753.7539.1094.0448.7412.1721.02122.1744.6986.54285.519.032.850.21685.519.032.850.239.114.048.7412.17

Con 1-5 (0-32 min)710.565.3236.6114.4109.5911.5823.91242.8806.2637.56497.225.243.758.13297.225.243.758.136.614.419.5911.58






Plant Water gm2993

NaHS10.684.2714.9501120.3

Na2SiO30.99

+100

+150

NaHS, ml (20% w/w, 1.162)502070+200

Na2SiO3 (10% w/w, 1.075)10+270



R.P.M.13001300130013001300+500

pH11.211.511.81212.1+635

% SOLIDS21.69.2-635



P80=m


PROJECT No.P-2685K

DATE:1/12/08

BY:PT


Repeat test 68 except add 3 kg Na2SiO3 per tonne of test feed prior to test



Con.# 1 (0-2 min.)333.2127.711.7241.0004.0107.956.224.80600.4700.9320.72919.84.16.55.8

Con.# 2 (2-4 min.)300.8112.110.2940.0004.2908.937.104.11600.4410.9190.73116.93.96.45.8

Con.# 3 (4-8 min.)493.8180.116.5339.0004.3908.958.566.44750.7261.4801.41526.56.310.311.3

Con.# 4 (8-16 min.)665.6207.619.0632.5005.18010.7812.406.19330.9872.0542.36325.58.614.318.9

Con.# 5 (16-32min.)532.6115.310.5823.0006.81013.8519.222.43430.7211.4662.03410.06.310.216.2Kinetics



Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)127.711.7241.0004.0107.956.224.80600.4700.9320.72919.84.16.55.8219.84.16.55.841.004.017.956.22

Con 1+2 (0-4 min)239.822.0140.5334.1418.416.638.92210.9111.8511.46036.78.012.911.6436.78.012.911.640.534.148.416.63

Con. 1-3 (0-8 min.)419.938.5439.8754.2488.647.4615.36961.6373.3302.87563.314.323.222.9863.314.323.222.939.884.258.647.46

Con. 1-4 (0-16 min.)627.557.6037.4354.5569.359.0921.56292.6245.3855.23888.823.037.441.81688.823.037.441.837.444.569.359.09

Con 1-5 (0-32 min)742.868.1835.1954.90610.0510.6723.99723.3456.8517.27298.829.347.658.03298.829.347.658.035.194.9110.0510.67






Plant Water gm3018

NaHS10.674.2714.9301435

Na2SiO32.96

+100

+150

NaHS, ml (20% w/w, 1.162)502070+200

Na2SiO3 (10% w/w, 1.075)30+270



R.P.M.13001300130013001300+500

pH10.811.211.511.912.0+635

% SOLIDS21.58.1-635



Excessive pyrite floating in this testP80=m


PROJECT No.P-2685K

DATE:1/12/08

BY:PT


Repeat test 68 except condition with hi shear impellerNa2SiO3 for 10 min then NaHS for 20 min.



Con.# 1 (0-2 min.)274.5106.39.7745.0003.0705.387.264.39500.3000.5250.70917.82.63.65.7

Con.# 2 (2-4 min.)228.284.47.7542.5003.3106.038.363.29570.2570.4680.64813.32.23.25.2

Con.# 3 (4-8 min.)313.3103.29.4842.0003.8606.909.323.98240.3660.6540.88416.13.24.57.0

Con.# 4 (8-16 min.)496.9162.914.9739.5004.1708.1410.505.91190.6241.2181.57223.95.58.412.5

Con.# 5 (16-32min.)857.5234.321.5328.7506.07013.7014.326.18901.3072.9493.08325.011.420.324.6Kinetics



Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)106.39.7745.0003.0705.387.264.39500.3000.5250.70917.82.63.65.7217.82.63.65.745.003.075.387.26

Con 1+2 (0-4 min)190.717.5243.8943.1765.677.757.69060.5570.9931.35731.14.96.810.8431.14.96.810.843.893.185.677.75

Con. 1-3 (0-8 min.)293.927.0043.2293.4166.108.3011.67300.9231.6472.24147.28.111.317.9847.28.111.317.943.233.426.108.30

Con. 1-4 (0-16 min.)456.841.9741.8993.6856.839.0817.58491.5472.8663.81371.213.619.730.41671.213.619.730.441.903.696.839.08

Con 1-5 (0-32 min)691.163.5037.4414.4949.1610.8623.77402.8535.8156.89596.225.039.955.03296.225.039.955.037.444.499.1610.86

FeedHi ShHi ShTotalGrinding

OPERATIONSampleCondCondFlotFlotFlotFlotFlotWashProduct

TIME10200-22-44-88-1616-32WaterFeed

REAGENTS - kg/t test feedTotalUsedRet.Pass

Pulp Slurry, gm2040mlMESH%%

Plant Water gm3098

NaHS10.682.142.1414.95559.4

Na2SiO30.990.99

+100

+150

NaHS, ml (20% w/w, 1.162)501010+200

Na2SiO3 (10% w/w, 1.075)10+270

DenverDenverDenverDenverDenverDenverDenver+325

MACHINE4 lit4 lit4 lit4 lit4 lit4 lit4 lit+400

R.P.M.2100210013001300130013001300+500

pH10.310.411.411.611.412.112.1+635

% SOLIDS21.221.211.3-635

ORP, mv (Ag/AgCl)-179-537-490-505-509-500-430*Total


P80=m


PROJECT No.P-2685K

DATE:1/12/08

BY:PT


Repeat test 70 except increase Na2SiO3 from 1 to 3 kg/ton



Con.# 1 (0-2 min.)346.6142.613.0945.5003.1405.947.725.95420.4110.7771.01024.03.65.47.9

Con.# 2 (2-4 min.)322.7124.611.4342.2503.4806.818.204.83100.3980.7790.93819.53.55.47.4

Con.# 3 (4-8 min.)449.9164.815.1240.2503.7607.839.826.08720.5691.1841.48524.65.08.211.7

Con.# 4 (8-16 min.)653.7206.118.9133.0004.58010.5914.246.24140.8662.0032.69325.27.613.921.1

Con.# 5 (16-25min.)259.557.75.3020.5006.82016.7518.721.08550.3610.8870.9914.43.26.27.8Kinetics



Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)142.613.0945.5003.1405.947.725.95420.4110.7771.01024.03.65.47.9224.03.65.47.945.503.145.947.72

Con 1+2 (0-4 min)267.224.5243.9843.2996.357.9410.78520.8091.5561.94843.57.110.815.3443.57.110.815.343.983.306.357.94

Con. 1-3 (0-8 min.)432.039.6442.5603.4756.918.6616.87241.3772.7403.43368.112.119.026.9868.112.119.026.942.563.476.918.66

Con. 1-4 (0-16 min.)638.158.5639.4723.8328.1010.4623.11382.2444.7436.12693.319.832.948.11693.319.832.948.139.473.838.1010.46

Con 1-5 (0-25 min)695.863.8537.8994.0798.8211.1524.19932.6055.6307.11797.722.939.155.92597.722.939.155.937.904.088.8211.15

FeedHi ShHi ShTotalGrinding

OPERATIONSampleCondCondFlotFlotFlotFlotFlotWashProduct

TIME10200-22-44-88-1616-25WaterFeed



Plant Water gm2878

NaHS10.664.2714.931034.4

Na2SiO32.962.96

+100

+150

NaHS, ml (20% w/w, 1.162)5020+200

Na2SiO3 (10% w/w, 1.075)30+270

DenverDenverDenverDenverDenverDenverDenver+325

MACHINE4 lit4 lit4 lit4 lit4 lit4 lit4 lit+400

R.P.M.2100210013001300130013001300+500

pH10.210.211.211.511.812.012.0+635

% SOLIDS26.02622.210.0-635

ORP, mv (Ag/AgCl)-196-520-470-500-500-470-480*Total


P80=m


PROJECT No.P-2685K

DATE:1/13/08

BY:PT


Repeat test 70 except eliminate Na2SiO3



Con.# 1 (0-2 min.)273.8121.511.2346.7502.9904.967.345.25210.3360.5570.82520.82.94.16.6

Con.# 2 (2-4 min.)306.9117.010.8243.0003.5806.298.444.65190.3870.6800.91318.53.45.07.3

Con.# 3 (4-8 min.)462.9164.315.1940.7504.1207.2610.106.19070.6261.1031.53424.65.58.212.3

Con.# 4 (8-16 min.)649.7205.619.0132.7505.27010.1613.346.22601.0021.9312.53624.78.814.320.3

Con.# 5 (16-32min.)481.3113.510.4922.0007.00014.5819.362.30880.7351.5302.0329.26.411.316.2Kinetics



Total (assay)26.25011.35015.0912.2000000

Con.# 1 (0-2 min.)121.511.2346.7502.9904.967.345.25210.3360.5570.82520.82.94.16.6220.82.94.16.646.752.994.967.34

Con 1+2 (0-4 min)238.522.0544.9103.2795.617.889.90400.7231.2381.73839.36.39.213.9439.36.39.213.944.913.285.617.88

Con. 1-3 (0-8 min.)402.837.2443.2133.6226.288.7916.09461.3492.3413.27263.811.817.426.1863.811.817.426.143.213.626.288.79

Con. 1-4 (0-16 min.)608.456.2639.6774.1797.5910.3222.32062.3514.2725.80888.520.631.746.41688.520.631.746.439.684.187.5910.32

Con 1-5 (0-32 min)721.966.7536.8984.6238.6911.7524.62943.0865.8027.84097.727.143.062.63297.727.143.062.636.904.628.6911.75

FeedHi ShTotalGrinding

OPERATIONSampleCondFlotFlotFlotFlotFlotWashProduct

TIME200-22-44-88-1616-32WaterFeed



Plant Water gm2978

NaHS10.746.4517.191053.7

+100

+150

NaHS, ml (20% w/w, 1.162)5030+200

+270

DenverDenverDenverDenverDenverDenver+325

MACHINE4 lit4 lit4 lit4 lit4 lit4 lit+400

R.P.M.210013001300130013001300+500

pH10.811.511.812.012.212.2+635

% SOLIDS2621.68.5-635

ORP, mv (Ag/AgCl)-553-480-491-488-455-450*Total


P80=m


PROJECT No.P-2685K

DATE:1/14/08

BY:PT

TEST No. 73NAME:Freeport McMoRan Copper and Gold Inc. - Cerro VerdeSample:Mo Ro Feed @ 10am Jan 14

Mo Rougher flotation as-received using N2 flotation gasInitial pulp density = 43.8% solids



Con.# 1 (0-2 min.)215.172.72.7428.75012.15012.2510.260.78690.3330.3350.28145.81.31.23.9

Con.# 2 (2-4 min.)199.355.32.0820.75015.01015.1813.400.43200.3130.3160.27925.21.31.23.9

Con.# 3 (4-8 min.)290.467.42.5413.50017.03018.6315.760.34260.4320.4730.40019.91.71.75.6

Con.# 4 (8-16 min.)277.244.81.696.75017.39022.5816.180.11390.2930.3810.2736.61.21.43.8

Con.# 5 (16-24min.)142.914.20.533.08816.88025.5313.940.01650.0900.1360.0751.00.40.51.0Kinetics



Total (assay)1.68025.12628.267.3400000

Con.# 1 (0-2 min.)72.72.7428.75012.15012.2510.260.78690.3330.3350.28145.81.31.23.9245.81.31.23.928.7512.1512.2510.26

Con 1+2 (0-4 min)128.04.8225.29413.38613.5211.621.21890.6450.6510.56071.02.62.47.8471.02.62.47.825.2913.3913.5211.62

Con. 1-3 (0-8 min.)195.47.3621.22614.64315.2813.051.56151.0771.1240.96090.94.34.113.4890.94.34.113.421.2314.6415.2813.05

Con. 1-4 (0-16 min.)240.29.0418.52615.15516.6413.631.67541.3711.5051.23397.65.55.517.21697.65.55.517.218.5315.1616.6413.63

Con 1-5 (0-24 min)254.49.5817.66415.25117.1413.651.69191.4611.6411.30798.55.96.018.22498.55.96.018.217.6615.2517.1413.65






Plant Water gm0

NaHS0.000.000.0001173.3

+100

+150

NaHS, ml (20% w/w, 1.162)000+200

+270



R.P.M.13001300130013001300+500

pH10.510.710.811.011.1+635

% SOLIDS43.839.4-635

ORP, mv (Ag/AgCl)-560-569-570-570-570Total

Remarks:Process water pH = 7.8

P80=m


PROJECT No.P-2685K

DATE:1/14/08

BY:PT


Repeat test 73 @ 51% solidsInitial pulp density = 50.9% solids



Con.# 1 (0-2 min.)19973.32.0923.50015.43015.809.080.49200.3230.3310.19027.81.31.22.6

Con.# 2 (2-4 min.)115.939.11.1224.50014.18014.7810.540.27360.1580.1650.11815.40.60.61.6

Con.# 3 (4-8 min.)363.3112.93.2216.50017.88018.1312.140.53210.5770.5850.39230.02.32.15.4

Con.# 4 (8-16 min.)392.996.62.7611.75019.43020.1015.080.32420.5360.5550.41618.32.12.05.8

Con.# 5 (16-32min.)40276.12.174.62520.47023.4514.360.10050.4450.5100.3125.71.81.94.3Kinetics



Total (assay)1.68025.12628.267.3400000

Con.# 1 (0-2 min.)73.32.0923.50015.43015.809.080.49200.3230.3310.19027.81.31.22.6227.81.31.22.623.5015.4315.809.08

Con 1+2 (0-4 min)112.43.2123.84814.99515.459.590.76570.4810.4960.30843.21.91.84.3443.21.91.84.323.8515.0015.459.59

Con. 1-3 (0-8 min.)225.36.4420.16616.44116.7910.871.29781.0581.0810.69973.34.24.09.7873.34.24.09.720.1716.4416.7910.87

Con. 1-4 (0-16 min.)321.99.2017.64017.33817.7812.131.62201.5941.6351.11591.66.36.015.51691.66.36.015.517.6417.3417.7812.13

Con 1-5 (0-32 min)398.011.3715.15217.93718.8712.561.72262.0392.1451.42897.28.17.919.83297.28.17.919.815.1517.9418.8712.56






Plant Water gm0

NaHS0.000.000.0001118.8

+100

+150

NaHS, ml (20% w/w, 1.162)000+200

+270



R.P.M.13001300130013001300+500

pH10.910.911.011.011.1+635

% SOLIDS50.947.3-635



P80=m


PROJECT No.P-2685K

DATE:1/14/08

BY:PT





Con.# 1 (0-2 min.)16936.53.7336.2506.2508.0314.721.35300.2330.3000.54973.90.91.17.5

Con.# 2 (2-4 min.)16620.62.1118.00012.54016.9016.520.37920.2640.3560.34820.71.11.34.8

Con.# 3 (4-8 min.)212.615.91.633.60019.44024.6012.860.05850.3160.4000.2093.21.31.52.9

Con.# 4 (8-16 min.)263.115.01.531.11321.15026.4510.420.01710.3240.4060.1600.91.31.52.2

Con.# 5 (16-24min.)395.718.31.870.43823.77026.609.060.00820.4450.4980.1700.41.81.82.3Kinetics



Total (assay)1.68025.12628.267.3400000

Con.# 1 (0-2 min.)36.53.7336.2506.2508.0314.721.35300.2330.3000.54973.90.91.17.5273.90.91.17.536.256.258.0314.72

Con 1+2 (0-4 min)57.15.8429.6668.51911.2315.371.73220.4970.6560.89794.62.02.412.3494.62.02.412.329.678.5211.2315.37

Con. 1-3 (0-8 min.)73.07.4623.98910.89814.1414.821.79070.8141.0561.10797.83.23.915.2897.83.23.915.223.9910.9014.1414.82

Con. 1-4 (0-16 min.)88.09.0020.08912.64516.2414.071.80781.1381.4611.26698.74.55.317.41698.74.55.317.420.0912.6516.2414.07

Con 1-5 (0-24 min)106.310.8716.70614.56118.0213.211.81601.5831.9591.43699.26.37.219.72499.26.37.219.716.7114.5618.0213.21






Plant Water gm2683

NaHS9.510.009.510900

+100

+150

NaHS, ml (20% w/w, 1.162)40040+200

+270



R.P.M.13001300130013001300+500

pH10.310.410.410.510.6+635

% SOLIDS19.718.7-635

ORP, mv (Ag/AgCl)-510-555-567-563-569-570Total


P80=m


PROJECT No.P-2685K

DATE:1/14/08

BY:PT





Con.# 1 (0-2 min.)201.251.03.1332.7509.0209.7012.181.02420.2820.3030.38159.51.11.16.6

Con.# 2 (2-4 min.)178.731.71.9421.75012.67014.6815.840.42280.2460.2850.30824.61.01.05.3

Con.# 3 (4-8 min.)185.225.11.5412.50014.79019.4517.320.19240.2280.2990.26711.20.91.04.6

Con.# 4 (8-16 min.)282.531.61.942.97519.64026.8312.340.05760.3810.5200.2393.31.51.84.1

Con.# 5 (16-24min.)141.513.90.850.80023.14027.909.100.00680.1970.2380.0780.40.80.81.3Kinetics



Total (assay)1.68025.12628.267.3400000

Con.# 1 (0-2 min.)51.03.1332.7509.0209.7012.181.02420.2820.3030.38159.51.11.16.6259.51.11.16.632.759.029.7012.18

Con 1+2 (0-4 min)82.75.0728.53410.41911.6113.581.44700.5280.5890.68984.02.12.011.9484.02.12.011.928.5310.4211.6113.58

Con. 1-3 (0-8 min.)107.86.6124.80011.43713.4314.451.63940.7560.8880.95595.23.03.116.5895.23.03.116.524.8011.4413.4314.45

Con. 1-4 (0-16 min.)139.48.5519.85313.29616.4713.971.69701.1371.4081.19498.64.64.920.71698.64.64.920.719.8513.3016.4713.97

Con 1-5 (0-24 min)153.39.4018.12514.18917.5113.531.70381.3341.6461.27298.95.35.722.02498.95.35.722.018.1314.1917.5113.53






Plant Water gm1698

NaHS2.850.002.8501086.6

+100

+150

NaHS, ml (20% w/w, 1.162)20020+200

+270



R.P.M.13001300130013001300+500

pH10.910.910.910.910.910.9+635

% SOLIDS30.026.8-635



P80=m


PROJECT No.P-2685K

DATE:1/14/08

BY:PT


Repeat test 73 @ 10% solidsInitial pulp density = 9.6 solids



Con.# 1 (0-2 min.)117.118.04.0134.2506.5809.6311.981.37180.2640.3860.48078.61.01.46.8

Con.# 2 (2-4 min.)68.44.71.0516.75011.68017.3016.720.17520.1220.1810.17510.00.50.62.5

Con.# 3 (4-8 min.)72.43.30.7310.00014.61022.1514.920.07340.1070.1630.1104.20.40.61.5

Con.# 4 (8-16 min.)165.36.41.423.72519.56025.2012.400.05300.2790.3590.1773.01.11.32.5



Total (assay)1.68025.12628.267.3400000

Con.# 1 (0-2 min.)18.04.0134.2506.5809.6311.981.37180.2640.3860.48078.61.01.46.8278.61.01.46.834.256.589.6311.98

Con 1+2 (0-4 min)22.75.0530.6277.63611.2212.961.54700.3860.5670.65588.61.52.09.2488.61.52.09.230.637.6411.2212.96

Con. 1-3 (0-8 min.)26.05.7928.0098.52112.6113.211.62040.4930.7290.76492.81.92.610.8892.81.92.610.828.018.5212.6113.21

Con. 1-4 (0-16 min.)32.47.2123.21210.70215.0913.051.67350.7721.0880.94195.92.93.913.21695.92.93.913.223.2110.7015.0913.05


OPERATIONSampleFlotFlotFlotFlotDilutionWashProduct

TIME0-22-44-88-16WaterWaterFeed



Plant Water gm3620

NaHS25.8625.860220.8

+100

+150

NaHS, ml (20% w/w, 1.162)5050+200

+270

DenverDenverDenverDenver+325

MACHINE4 lit4 lit4 lit4 lit+400

R.P.M.1300130013001300+500

pH9.910.910.710.610.5+635

% SOLIDS9.6-635



P80=m


PROJECT No.P-2685K

DATE:1/15/08

BY:PT

TEST No. 78NAME:Freeport McMoRan Copper and Gold Inc. - Cerro VerdeSample:1st Cl feed 8:30 on 1/15

1st cleaner flotation without P4000 defoamer. Baseline testInitial pulp density = 28.5 solids



Con.# 1 (0-2 min.)190.262.14.0440.2505.5506.759.801.62520.2240.2730.39617.61.01.24.2

Con.# 2 (2-4 min.)214.669.34.5139.2505.8707.0010.981.76850.2640.3150.49519.21.21.45.2

Con.# 3 (4-8 min.)344.7106.06.8937.0005.8207.5012.582.55010.4010.5170.86727.71.82.29.1

Con.# 4 (8-16 min.)449.8110.97.2130.7506.7609.5016.302.21730.4870.6851.17524.12.23.012.3

Con.# 5 (16-32min.)39975.04.8815.75011.94019.0016.460.76800.5820.9270.8038.32.74.08.4Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)62.14.0440.2505.5506.759.801.62520.2240.2730.39617.61.01.24.2217.61.01.24.240.255.556.759.80

Con 1+2 (0-4 min)131.48.5439.7235.7196.8810.423.39370.4890.5880.89036.82.22.59.4436.82.22.59.439.725.726.8810.42

Con. 1-3 (0-8 min.)237.415.4438.5075.7647.1611.395.94380.8901.1051.75764.54.14.818.5864.54.14.818.538.515.767.1611.39

Con. 1-4 (0-16 min.)348.322.6536.0376.0817.9012.958.16111.3771.7902.93388.56.37.730.81688.56.37.730.836.046.087.9012.95

Con 1-5 (0-32 min)423.327.5232.4437.1199.8713.578.92911.9592.7163.73596.99.011.739.23296.99.011.739.232.447.129.8713.57






Plant Water gm0

NaHS0.006.046.0401077

+100

+150

NaHS, ml (20% w/w, 1.162)04040+200

+270



R.P.M.13001300130013001300+500

pH12.112.112.112.212.212.3+635

% SOLIDS28.522.7-635


Remarks:Process water pH = 7.9Air = 1-2 lit/minmv = -600 w/o air

ccpy & py activated at -520 mv. At 19" ORP = -500 mv, add NaHSP80=m


PROJECT No.P-2685K

DATE:1/15/08

BY:PT


Repeat test 78 using 100 g/t P4000 defoamerInitial pulp density = 29.2% solids



Con.# 1 (0-2 min.)178.858.23.8940.2505.6607.008.621.56390.2200.2720.33516.71.01.23.7

Con.# 2 (2-4 min.)236.675.85.0639.7505.8607.2510.542.01150.2970.3670.53321.51.41.65.9

Con.# 3 (4-8 min.)336.399.26.6237.2505.9007.7512.282.46690.3910.5130.81326.31.82.29.1

Con.# 4 (8-16 min.)346.884.25.6232.7506.2909.5015.621.84090.3540.5340.87819.71.62.39.8

Con.# 5 (16-32min.)398.677.05.1420.0009.90016.5018.301.02810.5090.8480.94111.02.33.610.5Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)58.23.8940.2505.6607.008.621.56390.2200.2720.33516.71.01.23.7216.71.01.23.740.255.667.008.62

Con 1+2 (0-4 min)134.08.9539.9675.7737.149.713.57540.5160.6390.86838.22.42.79.7438.22.42.79.739.975.777.149.71

Con. 1-3 (0-8 min.)233.215.5738.8115.8277.4010.806.04230.9071.1521.68264.54.14.918.8864.54.14.918.838.815.837.4010.80

Con. 1-4 (0-16 min.)317.421.1937.2035.9507.9612.087.88331.2611.6862.56084.25.87.228.51684.25.87.228.537.205.957.9612.08

Con 1-5 (0-32 min)394.426.3333.8456.7219.6313.298.91141.7702.5343.50095.28.110.939.03295.28.110.939.033.846.729.6313.29






Plant Water gm0

NaHS0.006.216.210958.4

P40000.0930.093

+100

P4000 dps (0.01g/dp)14+150

NaHS, ml (20% w/w, 1.162)04040+200

+270



R.P.M.13001300130013001300+500

pH12.112.112.112.212.212.3+635

% SOLIDS28.423.2-635





PROJECT No.P-2685K

DATE:1/15/08

BY:PT





Con.# 1 (0-2 min.)144.741.62.7539.7505.8207.259.721.09290.1600.1990.26711.90.70.82.8

Con.# 2 (2-4 min.)179.454.53.6038.7505.9707.5010.241.39580.2150.2700.36915.21.01.13.8

Con.# 3 (4-8 min.)355.7106.47.0337.5006.1808.0011.162.63710.4350.5630.78528.72.02.48.1

Con.# 4 (8-16 min.)420.3107.17.0833.5006.4209.7513.742.37130.4540.6900.97325.82.12.910.1

Con.# 5 (16-32min.)395.881.25.3722.7508.60015.8817.371.22100.4620.8520.93213.32.13.69.7Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)41.62.7539.7505.8207.259.721.09290.1600.1990.26711.90.70.82.8211.90.70.82.839.755.827.259.72

Con 1+2 (0-4 min)96.16.3539.1835.9057.3910.012.48870.3750.4690.63627.01.72.06.6427.01.72.06.639.185.917.3910.01

Con. 1-3 (0-8 min.)202.513.3838.2996.0507.7110.625.12590.8101.0321.42155.73.74.414.7855.73.74.414.738.306.057.7110.62

Con. 1-4 (0-16 min.)309.620.4636.6396.1788.4211.707.49721.2641.7222.39481.55.87.324.81681.55.87.324.836.646.188.4211.70

Con 1-5 (0-32 min)390.825.8333.7536.6819.9712.888.71821.7262.5753.32694.77.910.934.43294.77.910.934.433.756.689.9712.88






Plant Water gm0

NaHS0.006.146.140861.7

P40000.1850.185

+100

P4000 dps (0.01g/dp)28+150

NaHS, ml (20% w/w, 1.162)04040+200

+270



R.P.M.13001300130013001300+500

pH12.112.112.112.212.212.3+635

% SOLIDS28.423.8-635





PROJECT No.P-2685K

DATE:1/15/08

BY:PT





Con.# 1 (0-2 min.)137.437.92.4638.0006.8508.5010.260.93340.1680.2090.25210.40.80.92.6

Con.# 2 (2-4 min.)166.944.72.9036.7506.8608.6810.621.06470.1990.2510.30811.90.91.13.2

Con.# 3 (4-8 min.)285.381.75.3037.0006.4508.5311.001.95920.3420.4520.58221.91.61.96.1

Con.# 4 (8-16 min.)515.9137.48.9134.0006.66010.1811.263.02780.5930.9071.00333.82.73.910.5

Con.# 5 (16-32min.)482.198.16.3623.5008.58014.8515.681.49420.5460.9440.99716.72.54.010.4Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)37.92.4638.0006.8508.5010.260.93340.1680.2090.25210.40.80.92.6210.40.80.92.638.006.858.5010.26

Con 1+2 (0-4 min)82.65.3537.3246.8558.6010.451.99810.3670.4600.56022.31.72.05.9422.31.72.05.937.326.868.6010.45

Con. 1-3 (0-8 min.)164.310.6537.1636.6548.5610.733.95740.7090.9121.14244.23.23.912.0844.23.23.912.037.166.658.5610.73

Con. 1-4 (0-16 min.)301.719.5535.7226.6579.3010.976.98521.3021.8192.14578.05.97.822.51678.05.97.822.535.726.669.3010.97

Con 1-5 (0-32 min)399.825.9132.7237.12910.6612.138.47931.8472.7633.14294.78.411.832.93294.78.411.832.932.727.1310.6612.13






Plant Water gm0

NaHS0.006.036.0301040.4

P40000.3630.363

+100

P4000 dps (0.01g/dp)56+150

NaHS, ml (20% w/w, 1.162)04040+200

+270



R.P.M.13001300130013001300+500

pH12.112.112.112.212.312.4+635

% SOLIDS28.723.5-635





PROJECT No.P-2685K

DATE:1/16/08

BY:PT


Repeat test 78 but reduce pH from 12.1 to 9.5 using CO2Initial pulp density = 28.5% solids



Con.# 1 (0-2 min.)300113.17.5643.5005.1906.938.383.28820.3920.5240.63334.71.82.36.5

Con.# 2 (2-4 min.)184.960.64.0540.5004.8007.6511.341.64040.1940.3100.45917.30.91.34.7

Con.# 3 (4-8 min.)346.6102.36.8437.2505.4208.4814.262.54690.3710.5800.97526.91.72.510.0

Con.# 4 (8-16 min.)456.989.15.9626.5007.21011.6021.401.57810.4290.6911.27416.72.03.013.1

Con.# 5 (16-24min.)268.942.72.859.00013.58022.3318.760.25690.3880.6370.5352.71.82.85.5Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)113.17.5643.5005.1906.938.383.28820.3920.5240.63334.71.82.36.5234.71.82.36.543.505.196.938.38

Con 1+2 (0-4 min)173.711.6142.4535.0547.189.414.92860.5870.8341.09352.02.73.611.2452.02.73.611.242.455.057.189.41

Con. 1-3 (0-8 min.)276.018.4540.5255.1907.6611.217.47550.9571.4132.06878.94.46.121.2878.94.46.121.240.525.197.6611.21

Con. 1-4 (0-16 min.)365.124.4037.1025.6838.6213.709.05361.3872.1043.34295.56.39.134.31695.56.39.134.337.105.688.6213.70

Con 1-5 (0-24 min)407.827.2634.1606.51010.0614.239.31041.7742.7423.87898.28.111.939.72498.28.111.939.734.166.5110.0614.23

CO2TotalTotalGrinding

OPERATIONCondFlotFlotFlotFlotFlotDilutionWashProduct




Plant Water gm0

NaHS4.663.117.7701076.9

CO2 gas, liters~1

+100

+150

NaHS, ml (20% w/w, 1.162)302050+200

+270



R.P.M.13001300130013001300+500

pH12.2/9.59.8/10.410.811.211.912.0+635

% SOLIDS28.528.522.8-635

ORP, mv (Ag/AgCl)-610/-520-524-534-550-550-550Total


ccpy & py activated at 18min. At 19" ORP = -500 mv, add NaHSP80=m


PROJECT No.P-2685K

DATE:1/16/08

BY:PT


Repeat test 82 but use N2 flotation gasInitial pulp density = 28.7% solids



Con.# 1 (0-2 min.)299.8111.67.2242.2505.3707.159.323.04910.3880.5160.67333.61.82.27.2

Con.# 2 (2-4 min.)257.885.75.5438.2505.6607.6811.682.11980.3140.4260.64723.31.41.86.9

Con.# 3 (4-8 min.)360.2102.96.6534.2505.6908.6014.842.27910.3790.5720.98725.11.72.510.5

Con.# 4 (8-16 min.)344.970.44.5525.7506.14011.6020.501.17230.2800.5280.93312.91.32.39.9

Con.# 5 (16-24min.)339.548.83.1610.12511.30020.5820.180.31950.3570.6490.6373.51.62.86.8Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)111.67.2242.2505.3707.159.323.04910.3880.5160.67333.61.82.27.2233.61.82.27.242.255.377.159.32

Con 1+2 (0-4 min)197.312.7640.5135.4967.3810.355.16890.7010.9421.32056.93.24.014.1456.93.24.014.140.515.507.3810.35

Con. 1-3 (0-8 min.)300.219.4138.3665.5627.8011.897.44791.0801.5142.30782.04.96.524.6882.04.96.524.638.375.567.8011.89

Con. 1-4 (0-16 min.)370.623.9735.9695.6728.5213.528.62021.3592.0423.24194.96.28.734.51694.96.28.734.535.975.678.5213.52

Con 1-5 (0-24 min)419.427.1232.9626.3279.9214.308.93971.7162.6913.87798.47.811.541.32498.47.811.541.332.966.339.9214.30

CO2TotalTotalGrinding

OPERATIONCondFlotFlotFlotFlotFlotDilutionWashProduct




Plant Water gm0

NaHS4.514.5101004.5

CO2 gas, liters~1

+100

+150

NaHS, ml (20% w/w, 1.162)3030+200

+270



R.P.M.13001300130013001300+500

pH12.1/9.59.5/9.69.89.99.910.0+635

% SOLIDS28.728.723.5-635

ORP, mv (Ag/AgCl)-600/-512-528-529-531-534-536Total

Remarks:Process water pH = 7.9N2 = 1-2 lit/min

ccpy & py activated at 18min.P80=m


PROJECT No.P-2685K

DATE:1/16/08

BY:PT

TEST No. 84NAME:Freeport McMoRan Copper and Gold Inc. - Cerro VerdeSample:Bulk thick Uflow 9am 1/16/08

Moly rougher flotation w/o activated carbon or Nalco 7871 flocculant. Baseline test w/N2Initial pulp density = 43.5% solids



Con.# 1 (0-2 min.)167.168.62.5435.2506.8108.2813.440.89650.1730.2110.34233.50.70.84.2

Con.# 2 (2-4 min.)173.263.12.3429.7507.9609.6816.840.69600.1860.2260.39426.00.70.84.9

Con.# 3 (4-8 min.)30678.42.9123.2507.92011.6321.880.67580.2300.3380.63625.30.91.27.8

Con.# 4 (8-16 min.)391.174.52.7612.62513.58018.1022.360.34870.3750.5000.61813.01.51.87.6

Con.# 5 (16-32min.)310.545.31.682.03822.18025.1516.060.03420.3730.4220.2701.31.51.63.3Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)68.62.5435.2506.8108.2813.440.89650.1730.2110.34233.50.70.84.2233.50.70.84.235.256.818.2813.44

Con 1+2 (0-4 min)131.74.8832.6157.3618.9515.071.59250.3590.4370.73659.61.41.69.1459.61.41.69.132.617.368.9515.07

Con. 1-3 (0-8 min.)210.17.7929.1207.5709.9517.612.26830.5900.7751.37284.92.42.816.9884.92.42.816.929.127.579.9517.61

Con. 1-4 (0-16 min.)284.610.5524.8029.14312.0818.852.61710.9651.2751.98997.93.94.724.51697.93.94.724.524.809.1412.0818.85

Con 1-5 (0-32 min)329.912.2321.67610.93313.8818.472.65131.3371.6972.25999.25.36.227.83299.25.36.227.821.6810.9313.8818.47


OPERATIONSampleCondFlotFlotFlotFlotFlotDilutionWashProduct




Plant Water gm0

NaHS5.170.860.862.589.481349

CO2 gas, liters~2

+100

+150

NaHS, ml (20% w/w, 1.162)60101030110+200

+270



R.P.M.130013001300130013001300+500

pH12.212.2/9.710.110.110.210.410.9+635

% SOLIDS43.538.5-635

ORP, mv (Ag/AgCl)-562-468/-542-542-543-551-557-581Total


ccpy & py activated at 10 min.P80=m


PROJECT No.P-2685K

DATE:1/16/08

BY:PT


Repeat test 84 except add 900 g/t pulverized activated carbon to conditioning stepInitial pulp density = 43.8% solids



Con.# 1 (0-2 min.)194.170.62.580.00000.0000.0000.0000.00.00.00.0

Con.# 2 (2-4 min.)197.767.32.450.00000.0000.0000.0000.00.00.00.0

Con.# 3 (4-8 min.)304.687.93.210.00000.0000.0000.0000.00.00.00.0

Con.# 4 (8-16 min.)270.446.61.700.00000.0000.0000.0000.00.00.00.0

Con.# 5 (16-32min.)387.761.72.250.00000.0000.0000.0000.00.00.00.0Kinetics

Tail5988.02407.687.810.00000.0000.0000.0000.00.00.00.0Recovered, %Cum Con Assay, wt%


Total (assay)00000

Con.# 1 (0-2 min.)70.62.580.0000.0000.000.000.00000.0000.0000.0000.00.00.00.020.00.00.00.00.000.000.000.00

Con 1+2 (0-4 min)137.95.030.0000.0000.000.000.00000.0000.0000.0000.00.00.00.040.00.00.00.00.000.000.000.00

Con. 1-3 (0-8 min.)225.88.240.0000.0000.000.000.00000.0000.0000.0000.00.00.00.080.00.00.00.00.000.000.000.00

Con. 1-4 (0-16 min.)272.49.940.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0160.00.00.00.00.000.000.000.00

Con 1-5 (0-32 min)334.112.190.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0320.00.00.00.00.000.000.000.00






Plant Water gm0

NaHS6.780.850.852.5411.02990.2

CO2 gas, liters~2

Carbon (Pulverized)0.905

+100

+150

NaHS, ml (20% w/w, 1.162)80101030130+200

+270



R.P.M.130013001300130013001300+500

pH12.112.1/10.110.210.310.310.411.0+635

% SOLIDS43.840.2-635





PROJECT No.P-2685K

DATE:1/16/08

BY:PT


Repeat test 84 except add 9 g/t Nalco 7871 flocculant to conditioning stepInitial pulp density = 43.8% solids



Con.# 1 (0-2 min.)296.8109.44.040.00000.0000.0000.0000.00.00.00.0

Con.# 2 (2-4 min.)218.471.32.630.00000.0000.0000.0000.00.00.00.0

Con.# 3 (4-8 min.)323.681.53.010.00000.0000.0000.0000.00.00.00.0

Con.# 4 (8-16 min.)313.351.41.900.00000.0000.0000.0000.00.00.00.0

Con.# 5 (16-24min.)240.232.41.200.00000.0000.0000.0000.00.00.00.0Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)109.44.040.0000.0000.000.000.00000.0000.0000.0000.00.00.00.020.00.00.00.00.000.000.000.00

Con 1+2 (0-4 min)180.76.670.0000.0000.000.000.00000.0000.0000.0000.00.00.00.040.00.00.00.00.000.000.000.00

Con. 1-3 (0-8 min.)262.29.670.0000.0000.000.000.00000.0000.0000.0000.00.00.00.080.00.00.00.00.000.000.000.00

Con. 1-4 (0-16 min.)313.611.570.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0160.00.00.00.00.000.000.000.00

Con 1-5 (0-24 min)346.012.770.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0240.00.00.00.00.000.000.000.00






Plant Water gm65

NaHS6.860.860.862.5711.15858

CO2 gas, liters~2

Nalco 7871 flocculant0.009

+100

+150

NaHS, ml (20% w/w, 1.162)80101030130+200

+270



R.P.M.130013001300130013001300+500

pH12.212.2/9.610.210.310.410.611.1+635

% SOLIDS42.939.9-635





PROJECT No.P-2685K

DATE:1/18/08

BY:PT

TEST No. 87NAME:Freeport McMoRan Copper and Gold Inc. - Cerro VerdeSample:Mo Ro feed from Jan 18 survey

Flotation of as-received sampleInitial pulp density = 40% solids



Con.# 1 (0-2 min.)221109.44.040.00000.0000.0000.0000.00.00.00.0

Con.# 2 (2-4 min.)267.971.32.630.00000.0000.0000.0000.00.00.00.0

Con.# 3 (4-8 min.)290.781.53.010.00000.0000.0000.0000.00.00.00.0

Con.# 4 (8-16 min.)271.851.41.900.00000.0000.0000.0000.00.00.00.0

Con.# 5 (16-24min.)17732.41.200.00000.0000.0000.0000.00.00.00.0Kinetics



Total (assay)00000

Con.# 1 (0-2 min.)109.44.040.0000.0000.000.000.00000.0000.0000.0000.00.00.00.020.00.00.00.00.000.000.000.00

Con 1+2 (0-4 min)180.76.670.0000.0000.000.000.00000.0000.0000.0000.00.00.00.040.00.00.00.00.000.000.000.00

Con. 1-3 (0-8 min.)262.29.670.0000.0000.000.000.00000.0000.0000.0000.00.00.00.080.00.00.00.00.000.000.000.00

Con. 1-4 (0-16 min.)313.611.570.0000.0000.000.000.00000.0000.0000.0000.00.00.00.0160.00.00.00.00.000.000.000.00

Con 1-5 (

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