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Pressure Oxidation is a process for extracting gold from refractory ore. The most common refractory ores are pyrite and arsenopyrite,which are sulfide ores that trap the gold within them. Refractory ores require pre-treatment before the gold can be adequately extracted. 
Pressure oxidation POX leaching has been commercially applied to refractory gold ores since the 1980s. In the process, sulphide material is oxidised and dissolved in order to release the gold encapsulated in the sulphide matrix, making the gold available for further recovery.
Pressure oxidation (POX), high pressure oxidation (HiPOX) and ACTIVOX autoclave leaching are viable industry-standard technologies used to recover gold and other accessory metals. The process is particularly well suited for treating refractory gold ores, which
Pressure oxidation test work was conducted in North America and in Australia on concentrates containing 2.8 3.8 g/t gold, 100 117 g/t silver, 24 26% iron and 27 29% sulfur. The results of this work and a high level presentation of their impact onthis paper.
11/10/2017 Abstract. A pilot plant campaign has been conducted by Sherritt Technologies in support of Eldorado Gold Corporation's evaluation of pressure oxidation (POX) technology for the treatment of refractory gold concentrates from the Certej deposit in Romania. Preliminary batch tests indicated that gold extraction from the oxidised concentrates in
Santa Fe Pacific Gold Corp. conducted pressure-oxidation pilot plant studies on refractory carbonaceous gold ores from the Twin Creeks Mine in Nevada. The tests were conducted at
1/1/2016 Pressure oxidation, roasting, CIL 50% of gold in refractory carbonaceous sulfides. Sulfuric acid to remove carbonates before autoclave. Whole-ore acidic leach 21 Mercur USA Fine gold with sulfides and organic carbon, carbonates Pressure oxidation, CIL 21
Pilot plant pressure oxidation of refractory gold-silver Pilot pressure oxidation of refractory -silver concentrate from Eldorado Corporations Certej Project in Romania T. Chan Sherritt Technologies, Sherritt International Corporation, 8301-113 Street, Fort Saskatchewan, AB, T8L 4K7, Canada,M. Collins Sherritt Technologies, Sherritt International Corporation, 8301-113 Street, Fort
The first commercially successful bio- oxidation plant was built MetBytes altamet.au 4 in 2001 at Laizhou Gold Processing Plant in Shandong Province with a capacity of 100 t/d, adopting BacTech technology. The largest was built in 2007 in TM
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