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    Autoclave Pressure Oxidation Gold Au Grinding Mill China. Autoclave Pressure Oxidation Gold Au Grinding Mill China Roasting is the only commercialised process in zimbabwe for the pretreatment of refractory gold feedstocks for the subsequent cyanidation leachinghis process results in only about 75 gold recovery and is characterised by high gold values in the residue pressure oxidation process ...

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    • Pressure Oxidation Circuit – Concentrate from the surge tanks would be pumped to the autoclave feed tank, which would feed the autoclave. The autoclave is designed to provide 75 minutes of retention time at 220 degrees Celsius (428 degrees Fahrenheit) to oxidize the sulfides and liberate the precious metals.

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    autoclave pressure oxidation gold au grinding mill china. The Gold Strike Pressure Oxidation Plant Process . The mill was completed and production resumed in 1989 combining a traditional cyanide leach circuit with pressure oxidation. The mill started up on oxide ore in February, 1989

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    autoclave pressure oxidation gold au – grinding mill china Gold Extraction and Recovery Processes Faculty of Engineering. methods such as pressure oxidation, roasting, chlorination, biooxidation etc are available to .

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