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东北寨碳质硫化物金矿中的有机碳质物通过 Na OH浸出、苯抽提和多种酸浸出被分为三部分。矿石中的有机碳主要是多酸浸出残渣中的碳 ,占总有机碳的 55.4 1% ;其次为苯提取物中的碳 ,占总有机碳的 37.79% ;碱提取物中的碳含量最少 ,占总有机碳的 0 .61%。原矿样、元素碳提取物和碱处理残渣在含金氰化物溶液中具有一定的吸附能力。细菌氧化前后 ,矿石中有机碳含量几乎没有变化 ,但金的浸出率大于 95%。东北寨金矿的难浸特性在于矿石中的金主要是被硫化矿物包裹 ,而矿石中碳质物对金的浸出率影响很小。
The organic carbonaceous matter in the Dongbeizhai carbonaceous sulphide gold deposit is divided into three parts by NaOH leaching, benzene extraction and various acid leaching. The main organic carbon in the ore is leached by polyacid residue, accounting for 55.4 1% of the total organic carbon, followed by carbon in the benzene extract, accounting for 37.79% of the total organic carbon. The carbon content in the alkali extract is the least, 0.61% of total organic carbon. Ore samples, elemental carbon extracts and alkali-treated residues have certain adsorption capacity in gold cyanide-containing solutions. Before and after the bacterial oxidation, there was almost no change in the organic carbon content in the ore, but the gold leaching rate was more than 95%. Dongbeizhai gold is difficult to impregnate the characteristics of the gold in the ore is mainly sulfide minerals, and the carbonaceous material in the ore leaching rate of gold has little effect.