摘要
针对宜昌磷矿重介质分选所产生的低品位微细粒级胶磷矿,进行了多元素分析以及粒度分析,-0.045 mm的粒级含量达到94%以上,原矿品位P_2O_5含量为15.62%,Mg O含量4.30%,Si O_2含量为24.46%,该磷矿属于微细粒级硅钙质低品位胶磷矿。试验结果表明,采用正浮选一粗一扫两精联合反浮一粗一扫的工艺流程,获得了最终磷精矿P_2O_5品位29.09%、Mg O含量0.82%、回收率78.01%的选矿指标。有效回收了宜昌磷矿重介质分选所产生的低品位微细粒级胶磷矿,减少了宜昌磷矿资源的损失率。
Directed at the low-grade fine grain collophane produced by the heavy medium separation of Yichang phosphate rock,the muhi-element analysis and and particle size analysis were carried out. The analysis show that the fine particle under 0. 045mm fraction content is above 94% ,the grade of P205 is nearly 15.62% ,MgO content of 4. 30% ,Si02content of 24. 46% ,which belongs to the micro fine silicon low grade cellophane. The test results show that the final dressing index with P205 grade of 29.09% ,recovery of 78.01%, MgO content of 0. 82% has gained by flow of one roughing one scavenging two cleaning direct flotation joint one roughing one scavenging re- verse flotation. It can effectively recover the low-grade fine grain collophane produced by the heavy medium separa- tion of Yichang phosphate rock and improve the utilization of resources.
出处
《矿产综合利用》
CAS
北大核心
2016年第3期67-70,共4页
Multipurpose Utilization of Mineral Resources
基金
湖北省重大科技创新计划(2014ACA036)
关键词
微细粒级胶磷矿
低浓度正-反浮选
重介质选矿
Fine-grain collophane
Low concentration direct-reverse flotation
Dense medium separation
