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投稿时间：2020-03-31 修订日期：2020-04-07
投稿时间：2020-03-31 修订日期：2020-04-07
中文摘要: 研究了锑金精矿矿浆电解过程中阳极区硫化矿物选择性氧化分解热力学基础。结果表明，黄铁矿标准氧化分解电位较辉锑矿低，从热力学角度看，黄铁矿会被优先氧化分解；当溶液中加入Cl-以后，辉锑矿和黄铁矿氧化分解电位都呈现下降趋势，其中辉锑矿下降更为迅速；在研究条件下，当Cl-浓度大于2.05 mol/L时，辉锑矿的分解电位小于黄铁矿，在热力学上使得辉锑矿优先选择性氧化分解成为可能。矿浆电解法处理锑金精矿实验中，锑的浸出率可达到98%以上，而铁的浸出率在8%以下，可实现锑的选择性浸出。
Abstract:Thermodynamic basis of selective oxidation decomposition of sulfide minerals in anode area during slurry electrolysis of antimony gold concentrate was studied. The results show that standard oxidation decomposition potential of pyrite is lower than that of stibnite, from perspective of thermodynamics, pyrite would be preferentially oxidized and decomposed. Oxidation decomposition potential of stibnite and pyrite drops with addition of chloride ions in solution, and stibnite drops more rapidly. Under the conditions of study, when Cl- concentration is bigger than 2.05 mol/L, decomposition potential of stibnite is lower than that of pyrite, which makes preferential selective oxidation decomposition of stibnite possible in thermodynamics. During treatment of antimony gold concentrate by slurry electrolysis, antimony leaching rate is 98% above, while iron leaching rate is 8% below, therefore, selective leaching of antimony is realized.
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基金项目:国家自然科学基金资助项目（51604030）
| 作者 | 单位 | |
| 张永禄* | 北京科技大学 | zyl20031670@163.com |
| 王成彦 | 北京科技大学 | |
| 郜伟 | 矿冶科技集团有限公司 | |
| 杨永强 | 矿冶科技集团有限公司 | |
| 揭晓武 | 矿冶科技集团有限公司 |
| Author Name | Affiliation | |
| zhangyonglu | University of Science & Technology Beijing | zyl20031670@163.com |
| WANG Cheng-yan | ||
| GAO Wei | ||
| YANG Yong-qiang | ||
| JIE Xiao-wu |
引用文本：
张永禄,王成彦,郜伟,杨永强,揭晓武.锑金精矿矿浆电解阳极区选择性氧化浸出研究[J].有色金属（冶炼部分）,2020(8):63-67.
zhangyonglu,WANG Cheng-yan,GAO Wei,YANG Yong-qiang,JIE Xiao-wu.Study on Selective Oxidation Leaching in Anode Area of Slurry Electrolysis of Antimony Gold Concentrate[J].Nonferrous Metals (Extractive Metallurgy),2020(8):63-67.
张永禄,王成彦,郜伟,杨永强,揭晓武.锑金精矿矿浆电解阳极区选择性氧化浸出研究[J].有色金属（冶炼部分）,2020(8):63-67.
zhangyonglu,WANG Cheng-yan,GAO Wei,YANG Yong-qiang,JIE Xiao-wu.Study on Selective Oxidation Leaching in Anode Area of Slurry Electrolysis of Antimony Gold Concentrate[J].Nonferrous Metals (Extractive Metallurgy),2020(8):63-67.
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