A G Bulaev, Z K Kanaeva, A T Kanaev, T F Kondrat'eva
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引用次数: 0
摘要
确定了生物氧化处理Bakyrchik矿床(东哈萨克斯坦)某双难处理含金硫化矿精矿的效率。实验在两种不同的模式下进行,即标准液体介质和模拟Bakyrchik矿床地下水化学成分的介质,其中含有高浓度的钠、镁和氯化物。该精矿有机碳含量为17.5%,黄铁矿含量为6%,毒砂含量为13%。金含量为57.5 g t@-1@。氰化直接金回收率很低(2.8%)。虽然生物氧化在两种情况下都是有效的(大约90%的硫化物硫被氧化),但氰化的效率较低(分别为39%和32%)。这表明生物氧化效率不足以有效处理双难处理含金硫化矿精矿。
[Biooxidation of a Double-Refractory Gold-Bearing Sulfide Ore Concentrate].
The efficiency of biooxidation for treatment of a double-refractory gold-bearing sulfide ore concentrate from the Bakyrchik deposit (East Kazakhstan) was defined. The experiments were conducted in two different modes, i.e., with the standard liquid medium and the medium imitating the chemical composition of the Bakyrchik deposit groundwater and containing high concentrations of sodium, magnesium, and chloride. The concentrate contained 17.5% of organic carbon, 6% of pyrite and 13% arsenopyrite. Gold content was 57.5 g t@-1@. Direct gold recovery by cyanidation was very low (2.8%). While biooxidation was efficient in both cases (approximately 90% of sulfide sulfur was oxidized), the efficiency of cyanidation was low (39 and 32%, respectively). This fact suggests high efficiency of biooxidation is insufficient for efficient treatment of double-refractory gold-bearing sulfide ore concentrates.