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为了处理那些金呈细粒浸染在硫化矿中的难于冶炼的含金精矿,曾提出过很多方法,包括湿法或火法冶金,或是将这两种方法联合使用。本文报告了用氧化焙烧—焙砂氰化、压热氧化浸出—压热浸渣的吸附氰化、细菌浸出—细菌浸渣的吸附氰化等联合流程,评价不同组成的难于冶炼的碳质含金—银—砷精矿(浮选和重选的)处理工艺的对比试验结果。还研究了精矿的处理方法对它们的吸附能力的影响。这些精矿是在用重选—浮选流程选别硫化物细脉浸染状的金—银矿石时得到的。在选别过程中,75.9的金富集在重选精矿中,而银则有75.5%富集在浮选精矿中。
In order to deal with difficult-to-smelt gold-bearing ores of finely grained sulphide ores, many methods have been proposed, including wet or pyrometallurgical methods or a combination of these two methods. This paper reports the combined processes of oxidative roasting-calcination cyanidation, autoclave leaching-autoclaved residue adsorption cyanidation, bacterial leaching-bacterial leachate adsorption cyanidation and the like, to evaluate the difficulty of smelting carbonaceous Comparative test results of gold-silver-arsenic concentrate (flotation and re-election) treatment processes. The effect of concentrate treatment on their sorption capacity has also been studied. These concentrates were obtained during the re-election-flotation process for the fine vein-like gold-silver ores. During the sorting process, 75.9% of the gold is enriched in the gravity concentrate and 75.5% of the silver is enriched in the flotation concentrate.