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Gold ore extraction cyanidation carbon in leaching process :
Gold Mining Equipment- Gold CIL (carbon in leaching)Plant line mainly include following equipment:
Vibrating Feeder
Jaw crusher, cone crusher
Vibrating screen
Belt conveyors
Ball mill
Spiral classifer
Hydrocyclone
Thickener
Leaching Tanks
Electrowinning and desorption device
Gold smelting furnace
CIL( carbon in leaching ) plant consists of following steps:
1 The ore is first reduced in size (typically 80% passing 200mesh ) to ensure that all nonrefractory gold is readily accessible for cyanide leaching, There are several variations of comminution circuits used in the gold
industry, such as: Multi-stage crushing, then ball milling circuits, typical of ball mill and hyrocyclones.
2 Thickening(add lime flocculant)
After comminution the pump is normally dilute and thickening. High efficient thickener is performed to increase the pulp density to about 50% solids by mass.
3 Leaching
Leaching reagents in the form of cyanide and and oxidant such as air or oxygen are added after thickening. Leaching take place in a series of agitated leaching reactors.
4 Carbon adsorption
After leaching, the pulp is passed over a feed screen to ensure removal of tramp materials about 0.6mm. This is done to minimize screen blocking in the adsorption section. After feed pre-screening, the pulp flows trough a cascade of well mixed adsorption tanks, typically 6-8 in number. The pulp residence time is about one hour in each tank. The tanks are normally mechanically agitated and each will contain a batch of carbon of concentration 10-25grams of carbon per litr of pulp. The carbon size is 0.6-0.8mm. The gold recovery is 90-99%.
5 Desorption and electro-winning
The loaded carbon is processed by desorption and electro-winning set, by this solution, it gets grain gold.
6 Gold melting
If you are in the market for gold cyanide leaching production line, welcome to contact us, we can provide you complete set machine and one step services.
Contact : Ms Sara
Mobile phone : 008613783471727
Skype : sarapang6
website:
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