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| 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 |
| Received:January 21, 2019 |
| 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)。 |
| Author Name | Affiliation | E-mail | | YANG Tianzu | School of Metallurgy and Environment, Central South University, Changsha 410083, China | tianzuyang@csu.edu.cn | | LU Yifan | School of Metallurgy and Environment, Central South University, Changsha 410083, China | | | ZHANG Duchao | School of Metallurgy and Environment, Central South University, Changsha 410083, China | zdc015@sina.com | | LIU Weifeng | School of Metallurgy and Environment, Central South University, Changsha 410083, China | | | CHEN Lin | School of Metallurgy and Environment, Central South University, Changsha 410083, China | | | LING Hongbin | School of Metallurgy and Environment, Central South University, Changsha 410083, China | |
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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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