黄金选冶末端炭质含金废渣综合回收新技术

New Comprehensive Recovery Technology for Gold-containing Waste Residue of Gold Beneficiation and Metallurgy Terminal Process

针对选冶末端产生的高泥炭、碎炭末、废水沉渣、废水处理塘泥等含金废渣,研究开发了焙烧-酸浸—氰化工艺,获得了优化的工艺条件,并研究了该工艺与现有金精矿沸腾焙烧—酸浸—氰化工业生产工艺的匹配。结果表明,开发的工艺与现有金精矿沸腾焙烧—酸浸—氰化工业生产工艺能完美匹配,控制含金废渣与金精矿的合适配比,同时匹配相应的双环式雾化进料技术及焙烧气氛,Au、Cu的回收率分别达94.37%和85.07%,实现了高效、节能、环保生产。

Focusing on gold-containing waste residue produced in the terminal process of gold beneficiation and metallurgy such as high carbon mud, carbon powder, waste slag and wastewater treatment pond mud etc, the technology of masting-acid leaching-cyanidation was studied, the optimized condition was obtained and the technology accordance to industrial technology of fluidized roasting-acid leaching-cyanidation was researched. The resuhs show that these two processes can match perfectly. By controlling right ratio of gold-containing waste residue to gold concentrate and matching corresponding dicyclic atomization feeding technology and calcination atmosphere, the recovery rate of Au and Cu is 94.37% and 85.07% respectively, which realizes high efficiency, energy saving and environmental production.