gold extraction Merrill-Crowe Zinc-dust cementation for gold ore concentration
We manufacture small to medium scale Merrill Crowe Zinc Precipitation Plants for the recovery of gold and silver, Gold CIP & CIL plant, gold ore flotation processing plant. and we supply equipmnet for other different ore processing plants.
Gold cyanidation-zinc powder replacement gold extracting process flow chart introduction:
Gold Merrill Crowe system is used for recover gold and silver from gold cyanide leaching solution. It is suitable for Ag: Au grade is higher than 6:1, if the Au grade is higher than Ag, it should use CIL or CIP method instead. It is equipped with Pregnant solution pump, Filter press, Deoxidation tower,Jet vaccum pump set,Spiral Zinc powder feeder,Automatic zinc powder mixture device,Condensation pump, Replacing filter press.
Gold Cyanidation- zinc powder replacement gold extracting process mainly include crushing, grinding, medicating & aeration, agitation leaching, backwashing, zinc powder replacement, gold mud smelting, tailing filter pressing, swage treatment, etc.
1. Agitation leaching- Gold leaching mainly come true in the leaching tank. Under the action of impeller and compression air, the ore pulp containing cyanide was stirred violently. It's good for leaching effect. Generally, leaching tank are used multi series.
2. Backwashing-it is the widely used proces in cyanidation plant. Generally, it use multi single-layer or multi-layer thickener. The backwashing use the next thickener's supernate to dilute last thickener's ore pulp, then the gold grade in liquid will down gradually until reach the standard. Backwashing is the ore pulp diluting & concentration process. Some cyanidation plants use filter press before the washing, then add washing water into filter cake for size mixing and washing. Generally, the first thickener's supernate as pregnant solution will be sent to zinc powder replacement system.
3. Zinc powder replacement-Add the metal reducing agent into cyanidation pregnant solution, the gold and silver will settle as gold mud via chemical reaction. Generally, it include pregnant solution deoxygenation, add zinc powder and lead acetate, filter press getting gold mud, etc.
Main equipment:
Cyanidation- zinc powder replacement gold extracting process mainly include crusher, ball mill, thickener, leaching tank, zinc powder feeder, filter press, dosing machine, gold mud smelting equipment, etc.
| Application |
Gold ore mining plant |
| Our service |
Designing for free, equipment supply, installation guidance, local workers training |
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