| 用硫酸氧化预处理从难处理金矿中提金的无害化工艺研究 |
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| 引用本文： | 李德良,黄念东,宋和付,许中坚,王淀佐.用硫酸氧化预处理从难处理金矿中提金的无害化工艺研究[J].湖南科技大学学报(自然科学版),1999,14(1):39-43. |
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| 作者姓名： | 李德良 黄念东 宋和付 许中坚 王淀佐 |
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| 作者单位： | 湘潭矿业学院环境工程及化工新技术研究所,湖南湘潭,411201 |
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| 基金项目： | 中国科学院资助项目，59404002， |
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| 摘 要： | 探讨了硫酸作为氧化剂分解含砷难处理金矿的技术可行性，实验结果表明硫酸可以有效地氧化砷黄铁矿而实现金的单体解离，适宜的分解条件为：硫酸与矿粉重量比为３，采用机械搅拌，反应温度２４０～２６０℃，分解时间２～３ｈ，分解渣采用硫脲浸出时浸金率高于９５％浸金条件为：硫脲浓度１％，三价铁作氧化剂，氧化剂与络合剂比值为０．０４～０．０６，浸出时间６ｈ图１，表６，参８
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| 关 键 词： | 无害化工艺 硫酸氧化 难处理金矿 硫脲 浸金 |
STUDIES OF A NON-TOXIC PROCESS TO EXTRACT GOLD FROM REFRACTORY ORES BY THE PRETREATMENT OF SULFURIC ACID OXIDATION |
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| Li Deliang,Huang Niandong,Song Hefu,Xu Zhongjian,Wang Dianzuo.STUDIES OF A NON-TOXIC PROCESS TO EXTRACT GOLD FROM REFRACTORY ORES BY THE PRETREATMENT OF SULFURIC ACID OXIDATION[J].Journal of Hunan University of Science & Technology(Natural Science Editon),1999,14(1):39-43. |
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| Authors: | Li Deliang Huang Niandong Song Hefu Xu Zhongjian Wang Dianzuo |
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| Abstract: | A new pretreating process based on sulfuric acid oxidation was proposed to oxidize
refractory gold ores bearing arsenic minerals.The experimental results showed that sulfuric
acid can oxidize arsenopyrite effectively to release gold from its coverings and the optimum
condition is :the ratio of sulfuric acid to ore equals 3,reaction time 23 h with mechanical stirring
at 240260 .The oxidized residue was leached by thiourea to extract gold with Fe() as oxidant
and the ratio of oxidant to ligand(here TU) is 0.040.06.The recovery of gold is more than 95%
after leaching 6 h in the solution of TU(1%) with Fe() as oxidant.1fig.,6tabs.,8refs. |
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| Keywords: | non-toxic process sulfuric acid oxidation refractory ores thiourea gold extractio Chinese Library Books NoX383 |
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