某金精矿冶炼厂氰化尾矿浆综合处理试验研究  

Experimental research on comprehensive treatment of cyanide tailings pulp in a gold concentrate smeltery

作　　者：杨义 邱陆明 刘海霞 刘金凤 Yang Yi;Qiu Luming;Liu Haixia;Liu Jinfeng(Liaoning Tianli Gold Co.,Ltd.;Changchun Gold Research Institute Co.,Ltd.)

机构地区：[1]辽宁天利金业有限责任公司,辽宁省凤城市118103 [2]长春黄金研究院有限公司

出　　处：《黄金》2020年第4期75-78,共4页Gold

摘　　要：根据某金精矿冶炼厂氰化尾矿浆中氰化物质量浓度较高的特点,开展综合处理试验研究。采用3R-O法、Colt’s法和臭氧氧化法组合工艺回收处理氰化尾矿浆中的氰化物和SCN^-,并对试验条件进行了优化。试验结果表明:氰化尾矿浆中的总氰化合物质量浓度降至2. 86 mg/L,去除率达99. 82%,SCN^-质量浓度降至2. 04 mg/L,去除率达99. 95%,压滤液可回用到氰化浸出工艺;处理后的氰渣达到了HJ 943-2018 《黄金行业氰渣污染控制技术规范》尾矿库处置标准要求,可实现尾矿库堆存。该研究为氰化尾矿浆无害化处理工程化应用提供数据参考。In light of the high cyanide mass concentration of cyanide tailings pulp in a gold concentrate smeltery,experimental research on the comprehensive treatment is carried out. The joint 3R-O, Colt’s and ozone oxidation process is adopted to recover the cyanide and SCN^-,and the test conditions are optimized. The results show that the mass concentration of total cyanide decreases to 2. 86 mg/L and the removal rate from the cyanide tailings pulp reaches99. 82 %. The mass concentration of SCN^- decreases to 2. 04 mg/L and the removal rate reaches 99. 95 %. The filtrate can be recycled back to cyanidation process;the treated cyanide slag meets the requirement of HJ 943-2018 Technical Specification for Pollution Control of Cyanide Leaching Residue in Gold Industry,realizing stockpiling in tailings pond.The research can provide data reference for the industrial cyanide tailings pulp detoxification application.

关 键 词：氰化尾矿浆 3R-O法 Colt’s法 臭氧氧化法 总氰化合物 SCN^- 

分 类 号：TD926.4[矿业工程—选矿]