湿法冶金2026，Vol.45Issue(2)：190-195,6.DOI:10.13355/j.cnki.sfyj.2026.02.008
某低品位金氰化尾渣的空白焙烧—炭浸工艺研究
Blank Roasting—Carbon Leaching Process for Low-grade Gold Cyanide Tailings
郭拴全 1郭梅 1康敏 1王勇海 1宁新霞1
作者信息
- 1. 西安西北有色地质研究院有限公司,陕西 西安 710054||陕西省矿产资源综合利用工程技术研究中心,陕西 西安 710054
- 折叠
摘要
Abstract
Blank roasting—carbon leaching process was used to extract gold from low-grade gold cyanide tailings in a certain place.The effects of roasting temperature,roasting time,dosage of'Jinchan'mineral processing agent,leaching time and liquid volume to solid mass ratio on gold leaching rate were investigated.On the basis of small-scale experiments,an expanded experiment was carried out.The results show that the optimal roasting process parameters are roasting temperature of 550℃ and roasting time of 20 min.The optimum carbon leaching process parameters are as follows:dosage of'Jinchan'mineral processing agent is 500 g/t,leaching time is 12 h,pulp pH is 12,bottom carbon density is 15 g/L,and liquid volume to solid mass ratio is 2∶1.Under the optimized roasting—carben leaching process parameters,Au leaching rate can reach more than 60％,which is significantly higher than the gold leaching rate obtained by direct leaching of cyanidation leaching residue without roasting.During the continuous operation of the rotary kiln roasting expansion test,the Au grade in each calcine process sample and the corresponding Au grade in the leaching residue fluctuate little,and the corresponding Au leaching rate is between 59.79％and 62.11％,and the continuous operation index is stable.The method can provide a technical reference for the recovery of gold from low-grade gold cyanide tailings.关键词
低品位金氰化尾渣/空白焙烧/炭浸/浸出/金Key words
low-grade gold cyanide tailings/blank roasting/carbon leaching/leaching/gold分类
矿业与冶金引用本文复制引用
郭拴全,郭梅,康敏,王勇海,宁新霞..某低品位金氰化尾渣的空白焙烧—炭浸工艺研究[J].湿法冶金,2026,45(2):190-195,6.
