50T/D Gold ore CIP production line

Carbon in Pulp (CIP) is an extraction technique for recovery of gold which has been liberated into a cyanide solution as part of the gold cyanidation process. Carbon in Pulp is regarded as a simple and cheap process. As such it is used in most industrial applications where the presence of competing gold or silver does not prohibit its use.

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Introduction to Work Flow

1. Flow chart:

A. Raw materials preparation:

Raw ores are sent to primary crusher by vibrating feeder, the crushed ores will be send to vibrating screen for separating. Under screen ores will be sent to powder silo. Upper screen ores will be returned back to second crusher by belt conveyor for re-crushing. It is named two step one closed circle crushing flow chart.

Raw material from powder silo will be sent to ball mill by feeder and belt conveyor, ball mill discharges to spiral classifier, bigger size will be returned back for re-grinding. Overflow will be pumped to hydro cyclone by slurry pump for second classifier: bigger size will be returned to ball mill for re-grinding. It is named one step two closed circle grinding flow chart. Overflow from hydro cyclone will be sent to trash screen and thickener.

B. Leaching and adsorption:

The slurry will enter into 6 sets of double impeller leaching tank one by one; well-mixed sodium cyanide agents are added to the 6 tanks; after leaching, the gold bearing slurry goes to the thickener; and after thickening, the pregnant solution will go to four-stage carbon column and after the adsorption, it becomes the barren solution, which is pumped to the thickener and the tailing goes to the tailing pile.

C. Tail water treatment:

The tailings are lifted to the filter press, and the filter cake is so called tailings, which are transported by belt conveyor and truck to the yard, while filter liquor goes to circulating water tank for recycling, which helps save the lime and sodium cyanide.

D. Gold-loaded carbon treatment:

The gold-loaded carbon is processed by Desorption&Electrolysis equipment in batches to get gold-dust. The gold-dust goes to gold melting furnace and turns to gold bar. The gold-loaded carbon after Electrolysis process could return to last stage in the flow chart for reprocessing.

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50T/D Gold ore CIP production line

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