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青海某含银低品位铜矿石选矿工艺试验研究
- 作者：
- 常征|熊馨|霸慧文
- 作者单位：
- 青海省地质矿产测试应用中心|青海省地质矿产测试应用中心|青海省自然资源博物馆
基金项目：
- 青海省重点研发与转化计划项目（2019-SF-139）
详细信息：
- 作者简介：
- 常征（1967—），男，陕西咸阳人，工程师，从事矿产综合利用研究工作；西宁市城中区城南新区光宁路，青海省地质矿产测试应用中心，810010；E-mail：1554787732@qq.com
- 通讯作者：
- isnull
- PDF下载
Experimental study on beneficiation process of a low-grade copper ore containing silver from Qinghai
- English Author：
- Qinghai Province Geology Ore Testing and Application Center|Qinghai Province Geology Ore Testing and Application Center|Qinghai Natural Resources Museum
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
针对青海某含银低品位铜矿石，在查明矿石类型、银嵌布状态等基础上，进行了原矿混合浮选、优先浮选选矿工艺流程对比试验。结果表明：混合浮选适宜处理该矿石；在最佳条件下，采用混合浮选，混合精矿二段磨矿分离银硫工艺流程可获得银品位3 882.0 g/t、银回收率82.32 %，铜品位10.43 %、铜回收率67.94 %的银精矿，银、铜回收率分别比优先浮选提高1.50百分点、1.92百分点，且可提前抛除52.2 %的尾矿，减少了磨矿费用，高效环保，为矿山开发利用提供详实依据。
关键词:
混合浮选；二段磨矿；优先浮选；铜矿石；低品位;银
Abstract:
In a case study of a low-grade copper ore containing silver from Qinghai,based on identifying the ore type and silver distribution state,the comparison tests of ore processing processes such as mixed flotation of raw ore and preferential flotation were carried out.The results show that mixed flotation was fit for the ore treatment;under optimal conditions,when mixed flotation is used,the process flow of two-stage mixed concentrate grinding to separate silver and sulfur can obtain silver concentrates with a silver grade of 3 882.0 g/t,silver recovery rate of 82.32 %,copper grade of 10.43 % and copper recovery rate of 67.94 %，the silver and copper recovery rates are 1.50 percen-tage points and 1.92 percentage points higher respectively than those of preferential flotation.In addition,52.2 % of the tailings can be abandoned in advance,which is efficient and environmentally friendly,reducing grinding costs and providing a detailed basis for mine development and utilization.
Keywords:
mixed flotation;two-stage grinding;preferential flotation;copper ore;low grade;silver
