Mineralogical characterization and pretreatment for antimony extraction by ozone of antimony-bearing refractory gold concentrates

被引：38
作者：
Guo, Xue-yi [1 ,2 ]
Xin, Yun-tao [1 ,2 ]
Wang, Hao [1 ,2 ]
Tian, Qing-hua [1 ,2 ]
机构：
[1] Cent S Univ, Sch Met & Environm, Changsha 410083, Peoples R China
[2] China Nonferrous Met Ind Assoc, Cleaner Met Engn Res Ctr, Changsha 410083, Hunan, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2017年 / 27卷 / 08期
基金：
中国国家自然科学基金;
关键词：
antimony-bearing refractory gold concentrates; ozone; pretreatment; mineralogical characterization; antimony extraction; SILVER; ORES; CYANIDATION; RECOVERY; PREOXIDATION; OXIDATION; STIBNITE; KINETICS; MEDIA;
D O I：
10.1016/S1003-6326(17)60213-9
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The mineralogical characterization of antimony-bearing refractory gold concentrates and the antimony extraction by ozone in HCl solution were investigated. The mineralogical study shows that there exist stibnite(Sb2S3), arsenopyrite(FeAsS), pyrite(FeS2) and quartz in the concentrates, and the gold is mainly (67.42%) encapsulated in sulfides. The antimony extraction by ozone in hydrochloric acid was employed and the influences of temperature, liquid/solid ratio, HCl concentration and stirring speed on the extraction of antimony were investigated. High antimony extraction (93.75%) is achieved under the optimized conditions. After the pretreatment by ozone, the antimony is recovered efficiently and the gold is enriched in the leaching residue.
引用
收藏
页码：1888 / 1895
页数：8
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