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Similarly, the pretreatment of the ore by ammonia leaching was shownto lead to high gold extractions (98%), in subsequent cyanide leaching with significant reductions in the consumption of cyanide. This appeared to be linked with the ready dissolution/removal of copper during ammonia leaching....
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Gold Sulphide Ore Oxidation by Alkaline Pressure. The increased activity has resulted in processing of ores previously considered not profitable or those classified as refractory. Refractory ores, such as ores with gold disseminated in pyrite or arsenopyrite, are not amenable to direct cyanidation....
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Microbial Pretreatment of Refractory Gold Ore Xinhai. Gold ore which is difficult to concentrate often referred to gold or refractory gold ore, which use conventional cyanide process cannot effectively extract most of the gold ore. Therefore, it is commonly said that the treatment of gold is the case of the cyanide method. Get Price...
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Alkaline leaching pretreatment is a chemical pretreatment process which can oxidize and dispose of components of the ore through adding chemical reagents. Meng Yuqun, Wu Minjie, etc. have researched to strengthen Fig. 1. General process options for pretreating refractory gold ores. Fig. 2. Block diagram of the two stage roasting process. Fig. 3....
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diwalwal ore pretreatment process Pretreatment of a refractory arsenopyritic gold ore using 50% of the silver were recovered after ore pretreatment with of the process. diwalwal ore pretreatment process crusherasia...
Memorandum Order No. 98 20 December 08, 1998 Mining ...
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