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The macraes process plant recovers gold by concentrating the metal into a relatively small fraction of flotation concentrate, oxidising the reground concentrate in a pressure oxidation autoclave, washing the oxidised residue and then utilising a carboninleach process to recover gold …

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Jan 01, 2005· The first gold pressure-oxidation plant commissioned was at the Homestake McLaughlin operation, CA, USA, in 1985 and served as the pioneering installation for whole-ore (acidic) treatment. …

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Hydromet gains ground - InfoMine. 7 Aug 2007 ... pressure oxidation process to produce 10,000 ... process general applicability to copper-gold sulphide ... s Comminution – Crushing, rod and ball milling, autogenous and ... at Bateman Engineering's Perth, Australia ... oxidation autoclave to provide heat and .... heap in China as a part of the feasibility study.

At 5.95 meters outside diameter, 50 meters in overall length, with an operating volume of 1,100 m 3, and a shipping weight of 965 tonnes, this is the largest pressure oxidation (POX) autoclave in the …

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Sun High Pressure Oxidation Of Refractory Gold Minerals. Biooxidation Biooxidation uses sulfur consuming bacteria in a water solution to remove sulfur Pressure oxidation Utilizes oxygen and heat under pressure in a liquid medium to effect oxidation of sulfur by way of a controlled chemical reaction High pressure autoclaves

Jan 01, 2016· Most pressure oxidation autoclaves are protected by corrosion resistant, ... (now Barrick) Campbell Mine facility was commissioned in July 1991 and represents one of the early autoclaves to treat an auriferous (Au: 213 g/t) sulfide concentrate with relatively high arsenic (10%) and sulfur (18%) contents. ... grinding, CIL, and gold …

Autoclave oxidation* 81 более 98 520 670 94 97.2 Albion 190 64 360 660 11 95.9 * autoclave oxidation conditions: 210°C, O 2 addition at 10 bar, oxidation for 1 h 0 10 20 30 40 50 60 70 80 90 100 0 10 20 30 40 50 ials %. n % Oxidation time, h Piryte oxidation degree Arsenopyrite oxidation level Au …

A gold recovery pretreatment process is disclosed in which the gold content is more completely extracted from refractory sulfidic ores which contain large quantities of metal carbonates such as dolomite than occurs in traditional gold extraction methods. The process includes treating the ore in an autoclave …

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