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电解二氧化锰“两矿法”电解液制备深度除杂技术的分析与探讨 被引量:3
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作者 万维华 范翔 +1 位作者 韦革斌 方皓 《中国金属通报》 2020年第5期100-101,共2页
通过对电解二氧化锰生产现状的分析,说明电解液制备除杂技术的重要性。通过对“两矿法”FeS2与MnO2浸出过程中的热力学、动力学、浸出过程浸出效率和除杂、净化过程深度脱杂技术的分析,探讨浸出净化过程中的生产工艺技术最佳参数,分步... 通过对电解二氧化锰生产现状的分析,说明电解液制备除杂技术的重要性。通过对“两矿法”FeS2与MnO2浸出过程中的热力学、动力学、浸出过程浸出效率和除杂、净化过程深度脱杂技术的分析,探讨浸出净化过程中的生产工艺技术最佳参数,分步脱除电解液中的钾、钠、铁、铝、镍、钴、铜、铅、镉、锌、钙、镁等杂质金属离子,控制溶液中主要的重金属离子含量在0.5mg/L以下,生产高品质的电解二氧化锰产品。 展开更多
关键词 “两矿法” 电解液 深度 除杂
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Novel two-step process to improve efficiency of bio-oxidation of Axi high-sulfur refractory gold concentrates 被引量:2
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作者 刘新星 王国华 +4 位作者 霍强 谢建平 李寿朋 武海艳 郭玉洁 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第12期4119-4125,共7页
In order to improve the bio-oxidation efficiency of Axi refractory gold concentrate, a two-step process including a high temperature chemical oxidation and a subsequent bio-oxidation, combined with p H control during ... In order to improve the bio-oxidation efficiency of Axi refractory gold concentrate, a two-step process including a high temperature chemical oxidation and a subsequent bio-oxidation, combined with p H control during the bio-oxidation step was used. The results revealed that the optimum mode was to maintain solution p H at 1.0-1.2 during the biological oxidation stage. Under this condition, the activity of mixed culture could be sustained and the formation of jarosite could be diminished, thus the oxidation efficiency was improved. The oxidation levels of iron and sulfur were improved by 12.50% and 15.49%, and the gold recovery was increased by 21.02%. Therefore, the two-step process combined with p H control is an effective method for oxidizing the biohydrometallurgical process of Axi gold concentrate, and it will have a broad prospect of application in dealing with complex refractory gold concentrate. 展开更多
关键词 gold concentrate BIO-OXIDATION p H control two-step oxidation
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