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贵州某氰化尾渣金回收试验研究
- 黄裕卿|李广|纪婉颖|周利华|刘鹏
- 作者单位：
- 紫金矿业集团股份有限公司&低品位难处理黄金资源综合利用国家重点实验室|紫金矿业集团股份有限公司&低品位难处理黄金资源综合利用国家重点实验室|紫金矿业集团股份有限公司&低品位难处理黄金资源综合利用国家重点实验室|紫金矿业集团股份有限公司&低品位难处理黄金资源综合利用国家重点实验室|紫金矿业集团股份有限公司&低品位难处理黄金资源综合利用国家重点实验室
基金项目：
- 福建省科技计划项目（201711010）；厦门市留学人员科研项目（厦人社〔2022〕205号)
详细信息：
- 作者简介：
- 黄裕卿（1995—），男，工程师，硕士，从事有色金属选矿工艺等方面的研究工作；E-mail：huangyuqing950101@163.com
- 通讯作者：
- isnull
- PDF下载
Experimental study of the gold recovery from certain cyanidation tailings in Guizhou
- English Author：
- Zijin Mining Group Co.,Ltd.&State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores|Zijin Mining Group Co.,Ltd.&State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores|Zijin Mining Group Co.,Ltd.&State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores|Zijin Mining Group Co.,Ltd.&State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores|Zijin Mining Group Co.,Ltd.&State Key Laboratory of Comprehensive Utilization of Low-grade Refractory Gold Ores
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
贵州某氰化尾渣含金1.66 g/t，金主要以裸露金和硫化物包裹金的形式存在，氰化尾渣粒度较细，-0.038 mm粒级占比超过80 %。针对氰化尾渣含泥量高的特点，采用泥砂分选工艺，通过旋流器分级，对沉砂和溢流分别进行浮选回收。采用一粗二扫三精流程，对沉砂和溢流分别采用适应其特性的工艺参数及药剂制度，泥砂分选全流程闭路试验可以获得金品位12.42 g/t、金回收率50.13 %的精矿；氰化尾渣全粒级浮选可以获得金品位9.49 g/t、金回收率38.10 %的精矿。结果表明，泥砂分选工艺获得的精矿中金品位提高了约2.9 g/t，金回收率提高了约12百分点，实现了氰化尾渣中金的有效回收。
关键词:
氰化尾渣；泥砂分选；分级；全粒级；金回收
Abstract:
Certain cyanide leaching tailings in Guizhou contain 1.66 g/t of gold,primarily existing in the forms of exposed gold and sulfide-encapsulated gold.The tailings have a high fineness,with particles of -0.038 mm accounting for over 80 %.Given the high slime content of the cyanidation tailings,a sand-slime separation process was employed.Cyclones are used for grading and flotation is performed for the recovery of the underflow and overflow separately.A closed-circuit test with roughing once,scavenging twice,and cleaning three times was conducted,with process parameters and reagent regimes tailored to the characteristics of the underflow and overflow.The sand-slime separation process achieved a concentrate with a gold grade of 12.42 g/t and a gold recovery rate of 50.13 %,while the ungraded flotation process of the cyanidation tailings produced a gold concentrate with a grade of 9.49 g/t and a recovery rate of 38.10 %.The results indicate that the sand-slime separation process improved the gold grade by approximately 2.9 g/t and the gold recovery rate by about 12 percentage points,effectively recovering gold from the cyanidation tailings.
Keywords:
cyanidation tailings;sand-slime separation;grading;ungraded;gold recovery
