摘要
采用环保型浸金试剂Sandioss,针对某金精矿进行了硫酸化焙烧-酸浸除铜-Sandioss浸出试验研究,考察了Sandioss用量、助浸剂SD-1010用量、浸出时间、液固比、保护碱等因素对金、银浸出率的影响,同时,采用活性炭对含金贵液进行了后续处理。研究表明,优化试验条件为:以Na OH作为保护碱,Sandioss浸出剂用量10 kg/t,助浸剂SD-1010用量20 kg/t,液固比1.5,反应时间48 h,在此条件下处理该金精矿,金浸出率高达97.47%,而且椰壳活性炭对Sandioss浸液中的金银吸附率都达到99%以上。研究结果为Sandioss替代传统氰化钠提金提供了技术支持。
A test was carried out on a gold concentrate adopting a process of sulfating roasting-acid leaching for copper removal with an environment-friendly gold leaching reagent of Sandioss. In the test,effects of Sandioss dosage,aiding leaching agent SD-1010 dosage,leaching time,liquid-solid ratio and protective alkali on leaching recovery of gold and silver were investigated. Moreover,the high-concentration leaching liquor containing gold was treated by activated carbon. The results show that the gold leaching rate can reach to 97. 47% under the optimum conditions as the following： with sodium hydrate as protective alkali,Sandioss dosage of 10 kg / t,SD-1010 dosage of 20 kg / t,liquid-solid ratio of 1. 5 and leaching time of 48 h. The adsorption rate of coconut shell activated carbon for gold and silver from Sandioss leaching liquor can reach to 99% and above. The research results provide a technical support for the replacement of traditional sodium cyanide by Sandioss in gold extraction.
出处
《矿冶工程》
CAS
CSCD
北大核心
2015年第1期92-96,共5页
Mining and Metallurgical Engineering
基金
陕西省渭南市工程技术研究中心组建项目资助(2013TCZX-1)
