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希腊高砷金精矿生物氧化预处理—氰化浸出试验研究
- 作者：
- 颜长怀|江路通
- 作者单位：
- 贵州锦丰矿业有限公司|贵州锦丰矿业有限公司
基金项目：
- isnull
详细信息：
- 作者简介：
- 颜长怀（1974—），男，陕西宝鸡人，工程师，从事利用微生物处理复杂难选冶含金矿石的技术研究工作；贵州省黔西南布依族苗族自治州贞丰县沙坪镇烂泥沟村，贵州锦丰矿业有限公司，562200；E-mail：185458563@qq.com
- 通讯作者：
- isnull
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Experimental research on the bio-oxidation pretreatment-cyanide leaching process for a gold concentrate with high arsenic content from Greece
- English Author：
- Guizhou Jinfeng Mining Limited|Guizhou Jinfeng Mining Limited
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
针对希腊精矿中砷品位（7.35 %）高的特点，进行了希腊精矿单独生物氧化预处理—氰化浸出、希腊精矿与锦丰精矿按一定比例配矿后生物氧化预处理—氰化浸出试验研究，分析了生物氧化过程中矿浆pH和氧化还原电位随时间的变化情况。结果表明：希腊精矿和锦丰精矿配矿（质量比1∶4）后生物氧化预处理—氰化浸出效果明显优于希腊精矿单独处理，且极大缩短了生物氧化时间，提高了希腊精矿金浸出率；生物氧化过程中pH和氧化还原电位高于希腊精矿单独处理时的指标，其pH值稳定在1.18左右，氧化还原电位平均为582 mV。该研究结果为高砷金精矿的处理提供了一种思路。
关键词:
高砷金精矿；生物氧化；氰化浸出；配矿；预处理
Abstract:
The Greece concentrate has high arsenic grade(7.35 %),based on which experimental research is carried out on the bio-oxidation pretreatment-cyanide leaching process after the Greece concentrate is through single bio-oxidation pretreatment-cyanide leaching and blending with the Jinfeng concentrate at certain proportion.The variation status of slurry pH and redox potential with time during the bio-oxidation process is analyzed.The results show that the effect of bio-oxidation pretreatment-cyanide leaching after blending of Greece concentrate with Jinfeng concentrate(mass ratio 1∶4) is far better than that of Greece concentrate treated alone,and the bio-oxidation time is greatly reduced,the gold leaching rate of Greece concentrate is increased;plus,the pH and redox potential are higher than that of Greece concentrate treated alone,the pH value stays around 1.18,the redox potential averages at 582 mV.The research results can provide a new idea of high arsenic gold concentrate treatment.
Keywords:
gold concentrate with high arsenic content;bio-oxidation;cyanide leaching;ore blending;pretreatment
