文章摘要
造锍熔炼富集含砷难处理金矿中金的研究
Enriching Gold from Refractory Arsenic-bearing Gold Ore by Matte Smelting Method
投稿时间:2019-01-21  
DOI:
中文关键词: 黄金  含砷难处理金矿  造锍熔炼  低品位铜锍
英文关键词: gold  refractory arsenic-bearing gold ore  matte smelting  low grade copper-matte
基金项目:国家重点研发计划项目(NO.2018YFC1901604)、国家自然科学基金青年科学基金(51404296)、湖南省自然科学基金青年基金项目(2018JJ3678)。
作者单位E-mail
杨天足 中南大学 冶金与环境学院长沙 410083 tianzuyang@csu.edu.cn 
卢一帆 中南大学 冶金与环境学院长沙 410083  
张杜超 中南大学 冶金与环境学院长沙 410083 zdc015@sina.com 
刘伟锋 中南大学 冶金与环境学院长沙 410083  
陈霖 中南大学 冶金与环境学院长沙 410083  
令红斌 中南大学 冶金与环境学院长沙 410083  
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中文摘要:
      在含砷难处理金矿中添加氧化铜造锍熔炼,将金和银富集在铜锍中。通过单因素实验法研究了造锍熔炼过程中主要元素的行为,得到造锍熔炼的最佳条件为:质量比m(CaO)/m(SiO2)=0.5、m(FeO)/m(SiO2)=2.0,物料中铜的总含量为5%,熔炼温度为1300℃,保温时间为60 min,此时金银在铜锍中得到有效富集。金在锍相中的品位为78.3 g/t,回收率可达到99.98%;锍相中铜的回收率为98.64%;渣相中砷和硫含量都很低。物相分析表明铜锍相中的铜和铁主要是以CuFeS2、FeS、Cu2S和Cu存在,对金具有富集作用。
英文摘要:
      Copper oxide was added to a refractory arsenic-bearing gold ore and then smelted. Gold and silver were captured by the copper-matte produced during smelt. By single-factor experiment, the optimum conditions of making the matte were as follows: m(CaO)/m(SiO2)=0.5, m(FeO)/m(SiO2)=2.0, the copper content in the mixed material was 5%, smelting temperature was 1300℃, holding time was 60 min. Under these conditions, gold and silver could be efficiently enriched in the copper-matte. The gold content in matte was 78.3 g/t, with a recovery rate of 99.98%, while 98.64% of copper added was found in the matte. The contents of both arsenic and sulfur in the slag were very low. The phase analysis of the copper-matte reveals that copper and iron are mainly present in the states of CuFeS2, FeS, Cu2S and Cu which have enriching effect on gold.
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