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| Recovery and Preparation of Bismuth Oxide from Hydrochloric Acid Leaching Solution of Silver-separation Slag |
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Received:June 19, 2014
Revised:June 22, 2014
Accepted:June 23, 2014
Published Online:October 15, 2014
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| DOI：10.3969/j.issn.1007-7545.2014.11.015 |
| KeyWord:silver-separation slag; hydrochloric acid leaching solution; hydrolysis; bismuth oxide |
| Author | Institution |
| Liu Wei |
北京矿冶研究总院 |
| jiangxunxiong |
北京矿冶研究总院 |
| Jiang Wei |
北京矿冶研究总院 |
| Fen Linyong |
北京矿冶研究总院 |
| Wang Shengdong |
北京矿冶研究总院 |
| Fan Yanqing |
北京矿冶研究总院 |
| Zhang Denggao |
北京矿冶研究总院 |
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| Abstract: |
| Hydrochloric acid leaching solution of silver-separation slag from copper anode slime contained antimony, tin, lead, and bismuth, and etc. Bismuth was separated from the above solution by fractional precipitation process to prepare crude bismuth oxychloride, i.e., removal of antimony and tin by hydrolysis precipitation at about pH 1.4, lead precipitation with sulphate, and bismuth hydrolysis precipitation at about pH 2.1. The crude bismuth oxychloride was refined by dissolving in hydrochloric acid and secondly bismuth precipitation at pH 1.6~1.7 to produce purified bismuth oxychloride. Bismuth oxide with grade of 99.9% above was prepared by treating the purified bismuth oxychloride in sodium hydroxide solution. |
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