sulfite metallic gold project

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Sulfite Metallic Gold Project

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  • 6 10400 0 202 3897 0 202 3897

    2 2554

    / . - - : , 2554. 57 : : . 2

  • i iii iv viiABSTARCT vii viii1. 12. 3

    2.1 32.2 32.3 4

    3. 53.1 ()

    53.1.1 53.1.2 53.1.3 53.1.4 53.1.5 () 63.1.6 () 63.1.7

    Simplex Evolutionary Operation 63.2

    73.2.1

    73.2.2

    73.2.3 73.2.4 8

    4. 9

  • II

    4.1 () 94.1.1 94.1.2 114.1.3 134.1.4 194.1.5 () 214.1.6 () 274.1.7

    Simplex Evolutionary Operation 294.2

    304.2.1

    304.2.2

    324.2.3 344.2.4 35

    5. 375.1 1 1 385.2 2 2 435.3 3 Steel Wool Electrowinning 485.4 4 52

    6. 557. 57

  • III

    1. 102. 123. 30-120 144. 1 - XA Slop (log K) 175. log K Activation Energy (E) 186. 30-120 207. () 228. () 289.

    Simplex Evolutionary Operation 2910. SIMPLEX 1 (Au-LEACHING) 2911. SIMPLEX 2 (Au-LEACHING) 3012. SIMPLEX 3 (Au-LEACHING) 3013. 3214. 3315. 3416. 3517. 1 4218. 1 4219. 2 4620. 2 4621. 3 5122. 3 5123. 4 5424. 4 54

  • IV

    1. 32. 103. 124. 25-70 155. 166. Rate Constant (K) (1 - XA)

    18 .7. Activation Energy (E)

    log k 1 / T 198. 219. () 2310. () 2411. X-RAY DIFFRACTION PEAK () 2512. X-RAY DIFFRACTION PEAK ()

    2613. () 2814. 3315. 3516. 3617. 3718. 3719. 1 3920. 1 4021. 4022. 4123. 4124. 2 4425. 2 45

  • V26. 2 4727. Steel Wool Electrowinning 4928. Steel Wool 3 5029. 5230. 4 53

  • VI

    3

    Simplex Evolutionary operation 1). 5:1 6.67:1 2). 80-86o 3). 90-120 99.94-100% 60o 3 8

    Simplex Evolutionary operation 99.99% 1%

  • VII

    ABSTRACT

    The extraction of Gold form impure Gold withAquar regia and the sulfite compound has been investigated , composing of Aquar regia leaching, sulfite precipitation and Case Study of factory scraps.

    The optimum condition conducted by Simplex Evolutionary operation as the following: 1. ratio between Aquar regia concentration and metallic gold ,5:1to6.67:12. temperature , 80-86 oC 3. duration , 90-120 mins yielded 99.94-100 % of Gold dissolution. Gold precipitation with the sulfite compound at temperature above 60oC Comsumed greater than 3 times at room temperature and took less than 8 times of duration.

    In case study of factory scraps , with optimum comdition , the purity of Gold 99.99% was obtained and less than 1% loss in the process.

  • VIII

    1). 2). Gold Plating 3). N & P Refining 4).

  • 1.

    (1) 100

    2 Primary Sources .. 2429 30% Secondary Sources 1 (Recycle) Secondary Sources

  • 2 3 Shot Shot 99%

    99.99% Electro Refining

    3 1). 2). 3). 2

  • 32.

    2.1

    1 4 0.1 (Shot)

    1

    2.2

    65 % 1 37 % 3 150 Water Bath

  • 4 Atomic absorption spectrophotometer ( )

    Commercial Grade1. 65 %2. 37 %3. 98 %4. 5.

    2.3

    Atomic absorption spectrophotometer (AA)

  • 53.

    3.1 ()

    3.1.1

    2:1 10:1 65% 1 36.5% 3

    HNO3 + 3HCl NOCI + 2H2O + CI2Au + 3NOCI AuCI3 + 3NO

    3.1.2

    6:1

    3.1.3 40 70

    30 120 Water Bath 6:1

    3.1.4

    70 86 (2)

    6:1

  • 63.1.5 ()

    24 22 18 9 6:1 1:0.5 70

    3.1.6 () 24 22 18

    14 9 6:1 1:0.5 70

    3.1.7 SimplexEvolutionary Operation

    C.W.Lowe (3) Simplex Evolutionary Operation (SIMPLEX EVOP) BOX EVOP BOX EVOP SIMPLEX EVOP 3 1). () 2). 3). 3.1.1 3.1.2 3.1.3 SIMPLEX-1 SIMPLEX-3

  • 73.2

    3.2.1

    1:5 1:0.5 4 20 10 30 4 13.3% 133

    3.2.2

    5:1 1:0.5 2.6% 5 40 50 60 80 Water Bath 4

    3.2.3 4 150

    60-70 30

  • 83.2.4

    3(COOH)2 + 2AuCI3 2Au + 6CO2 + 6HCI 4 150

    60-70 1

  • 94.

    4.1 ()

    4.1.1 2 5

    2:1 80.7% 2 16.2% 96.9% 3 17 (Hot Plate) 24 6:1 10:1 Rate Expression (5)

    A + B CdNA/dt = dNB/dt = dNC/dt = k CACB = k A/VC (1) Rate of Reaction = km (2)

    km = k / V A = CB =

  • 10

    1

    (%)2:1 80.74:1 96.96:1 1008:1 10010:1 100

    2 (.. 4 , 28 , 17 ..)

  • 11

    4.1.2

    6:1 3 6 2 17.7% 39.5% 2 3 21.8% 1 2.23 2 (Exothermic Reaction) 5 69.2% 3 5 14.8% 8.5% 6 1.0-1.5% 7 Rate of Reaction 2 7 8 77.7 83.9% 7 8 CB (Continuous Process)

  • 12

    2

    () (%)2 17.73 39.55 69.26 77.77 83.99 89.714 92.815 97.017 100

    3 (.. 4 , .. 6:1, 28)

  • 13

    4.1.3 28 40 50 60 70

    5% 17.4 28.8 44.8 57.7% 4 3 30 10 40 50 70 12% 10 60 21-26% 10 5 70 100% 4 30 99 60 87 90 83 78 120 ( : ) 86

    1 2 (1-XA) t -dNA/dt = km A CBNA = NoA (1-XA)XA = (NOA NA) / NOA

    NA = d(1-XA) = -km A CB / NOA dt1 - XA = - k dt

    1-XA (t) 3 slope Rate Constant (K) 30-120 1-XA K 40-70 6 4 Arrhenius Equation

    K = KOe E/RT

    log K = log K E / 2.303 RT E = Activation Energy

    K = Rate Constant at Desired TemperatureK = ConstantR = Gas Constant (1.987)

  • 14

    log K 1/T 7 Slope E/2.303R Activation Energy (E) Slope 5.49 Kcal/mole 5 Shrinking Core Models E film Diffusion Product Layer Diffusion 2-4 Kcal/mole E Chemical Reaction E Chemical Reaction Film Diffusion

    3 30 120

    () / (%) (o)30 60 90 120

    28 5.0 8.7 15.0 17.740 17.4 38.6 53.2 62.050 28.8 54.9 67.3 74.660 44.8 66.8 77.4 84.570 57.7 79.4 87.7 92.1

    6 : 1

  • 15

    4 28 70 O (.. 4 , .. 6:1)

  • 16

    5 (.. 4 , .. 6:1)

  • 17

    4 1 XA Slope [log K]

    Time (Min) 1 - XA [K](Min -1)

    [K](sec -1)

    Ave [K](sec -1)

    log K(sec -1)

    0 1.0 - -30 0.8258 5.8067 x 10-3 9.6778 x 10-5

    60 0.6139 6.435 x 10-3 1.0725 x 10-4

    90 0.4680 5.911 x 10-3 8.6667x 10-5

    120 0.3798 5.168 x 10-3 5.275 x 10-5 9.717 x 10-5 -4.012************ Temperature 40oC

    *****0 1.0 - -30 0.7122 9.593 x 10-3 3.9567 x 10-4

    60 0.4506 9.1567 x 10-3 1.2516 x 10-4

    90 0.3269 7.479 x 10-3 6.0537 x 10-5

    120 0.2543 6.2141 x 10-3 3.5319 x 10-5 1.3518 x 10-4 -3.869************ Temperature 50oC

    *****0 1.0 - -60 0.5517 0.01494 3.065 x 10-4

    60 0.3319 0.011135 9.2216 x 10-5

    90 0.2260 8.6 x 10-3 4.1852 x 10-5

    120 0.1550 7.042 x 10-3 2.1530 x 10-5 1.738 x 10-4 -3.760************ Temperature 60oC

    *****0 1.0 - -30 0.4230 0.0192 2.35 x 10-4

    60 0.2055 0.01324 5.708 x 10-5

    90 0.1228 9.747 x 10-3 2.274 x 10-5

    120 0.0787 7.677 x 10-3 1.094 x 10-5 2.079 x 10-4 -3.682************ Temperature 70oC

    *****

  • 18

    6 RATE CONSTANT K (1 XA)

    5 log K activation energy [E]

    Temp (oC) Temp (oK) 1/T(oK -1)

    log [K](sec -1)

    EKcal/mole

    Ave EKcal/mole

    40 313 3.19 x 10-3 -4.012 -50 323 3.10 x 10-3 -3.869 7.2760 333 3.00 x 10-3 -3.760 4.99 5.4970 343 2.915 x 10-3 -3.682 4.199

  • 19

    7 ACTIVATION ENERGY E log K 1/T

    4.1.4 8 6

    1:1 1:1.5 1:2 30 40.3 20.4 10.6% 2 1:0.5 30 60 120 3-6% Activity ()

  • 20

    6 30 120

    () / (%) (./.) 30 60 90 120

    1:0 57.7 79.4 87.7 92.11:0.5 57.2 82.0 93.7 98.21:1.0 40.3 62.6 74.1 82.01:1.5 20.4 40.1 51.5 59.71:1.2 10.6 22.2 30.5 37.0

    6:1 70O

  • 21

    8 (.. 4 , .. 6:1, 70O)

    4.1.5 ()

    9 7 24 30 24 57.2% 24 39.3 % 8 1.6% 14 9 10 () 3 9 14 18

  • 22

    X-ray Diffractrometer () 11 Peak X-ray Peak AgCI 12

    22

    7 ()

    (K) (% () / (%)30 60 90 120

    24 100 57.2 82.0 93.7 98.222 91.6 39.3 60.8 73.8 83.218 75.0 1.6 2.6 3.2 3.814 58.3 - 0.1 0.2 0.39 37.5 - 0.08 0.085 0.094

    6:1 1:0.5 70O

  • 23

    9 ( + )

  • 24

    10 ( + )

  • 25

    11 X RAY DIFFRACTION PEAK ()

  • 26

    12 X RAY DIFFRACTION PEAK ()

  • 27

    4.1.6 () (Au+Cu)

    (Au+Ag) ( )

    4Cu + 4HCI + O2 4CuCI + 2H2O4Cu + 4HCI + O2 2Cu2CI2 + 2H2OCu + 2HNO3 + 2HCI CuCI2 + 2NO2 + 2H2O

    13 8 30 24 57.2% 22 18 14 () 63.8 69.9 75.9% Electropotential (6)

    Au+ + e+ Au -1.50 VCu+ + e+ Cu -0.47 V

    14 42% 18 22 25 8% 14 18 22 9 37.5% 62.5% 14 60 % Cementation 9 14

  • 28

    8 ()

    (K) (%) () / (%)30 60 90 120

    24 100 57.2 82.0 93.7 98.222 91.6 63.8 84.7 93.3 97.818 75.0 69.9 99.914 58.3 75.9 100*9 37.5 65.0 100**

    * 45 ** 70 6:1

    1:0.5 70O

    13 ( + )

  • 29

    4.1.7 Simplex Evolutionary Operation

    SIMPLEX -1 SIMPLEX 3 9 12 5 6 100% 5 6 1.5 6.6 O 13

    9 SIMPLEX EVOP

    (A/W) 6:1 4:1 5:1 (O) 80 70 75 () 120 90 110

    10 SIMPLEX 1 [Au LEACHING]

    No. Parameter Au-RecoveryA/W-ratio Temp (oC) Time (Min) (%)

    1 4:1 70 90 77.03*2 6:1 70 90 97.353 5:1 80 90 99.944 5:1 75 120 99.46

    16.00 225 300 a Sum of retained co-ordinates10.67 150 200 b Twice average of a4.00 70 90 c Co-ordinates of discarded point

    5 6.67 80 110 d Co-ordinates of next point [b-c]

  • 30

    11 SIMPLEX 2 [Au LEACHING]

    No. Parameter Au-RecoveryA/W-ratio Temp (oC) Time (Min) (%)

    2 6:1 70 90 97.353 5:1 80 90 99.944 5:1 75 120 99.465 6.67:1

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