脱除某难处理金矿中砷和硫的研究  

Study on Removal of Arsenic and Sulfur from Refractory Gold Ore

作　　者：张建涛[1] 程垚[1] 陈帅[1] 高为[1] 胡鑫[1] 沈少波[1] 

机构地区：[1]北京科技大学冶金与生态工程学院、稀贵金属绿色回收与提取北京市重点实验室,北京100083

出　　处：《有色金属（冶炼部分）》2014年第5期12-16,共5页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学面上基金资助项目(50874011);北京科技大学本科生科技创新项目(12020694;13020107)

摘　　要：某难处理金矿先在氩气气氛下高温脱砷,脱砷后的金矿在氧气气氛中高温脱硫。并考察工艺参数对脱砷和脱硫的影响。结果表明,优化的脱砷条件为温度600℃、时间2h、氩气流量200mL/min,在该条件金矿中98%的砷以As2O3形式被挥发脱除,同时矿中26%的硫被脱除。优化的脱硫条件为温度650℃、时间2h、氧气流量200mL/min,在此条件金矿中97%的硫被挥发脱除。One refractory gold ore was first treated in the atmosphere with argon gas at a high temperature to remove arsenic and sulfur was removed from the residue obtained. The effects of technological parame- ters on dearsenization and desulfurization were investigated. The results show that 98% of arsenic from the ore is removed in the form of As2O3 and 26% of sulfur is removed under the optimum conditions inclu- ding temperature of 600 ℃, time of 2 h, and argon flow rate of 200 mL/min. The sulfur removal rate is 97% under the optimum conditions including temperature of 650 ℃, time of 2 h, and oxygen flow rate of 200 mL/min.

关 键 词：难处理金矿 脱砷 脱硫 预处理 

分 类 号：TF831[冶金工程—有色金属冶金]