Jiapigou Gold Mineral Pulp Mill

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JIAPIGOU gold mine production scale of 800t / d, the original beneficiation methods is the amalgamation + flotation, in September 1989 to build the CIP plant, put into operation in January 1991. The total recovery rate of the metallurgical process was 87%.
Ore properties: Jiapigou cyanide CIP plant mine ore is gold ore flotation own production, gold grade 60g / t, copper containing 2.3% to 5.5% of lead containing 4% to 10%.
The process flow of the Jiapigou gold ore slurry plant is shown in the figure.
Technical conditions: the concentration of pulp is 36%~40%, the fineness of grinding is 90%-400 mesh, the treated ore is 35t/d, the concentration of sodium in the leaching tank is 0.07%~0.09%, and the density of adsorption tank is 20~25g/ The mass fraction of L, CaO is 0.02%. The desorption solution is 3.0% NaOH + 3.0% NaCN, the desorption liquid circulation flow rate is 1.25m3/h, and the desorption electrolysis time is 24~30h.

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Design indicators: leaching rate of 94.4%, adsorption rate of 99.0%, desorption rate of 99.5%, and volume ratio of 99.5%. Production indicators (June-June 1991) are shown in the table.

Production index of Jiapigou Gold Mine Carbon Pulp Plant [302]

month

Cyanogen gold grade / (g· t -1 )

Leach rate /%

Adsorption rate /%

Desorption rate /%

1

68.01

93.76

97.72

95.01

2

60.85

95.11

93.57

98.34

3

61.43

94.2

98.31

98.7

4

65.53

96.82

99.12

91.85

5

56.8

96.28

99.29

96.27

6

69.8

96.32

99.53

95.2

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