广西巴里选矿厂高硫高泥微细粒锡石矿泥浮选—离心重选新技术研究

Study on Flotation-Centrifugal Gravity Separation Technology for Micro-fine Cassiterite Slime with High Sulfur and Mud From Bali Plant In Guangxi Province

针对广西高峰矿业有限责任公司巴里选矿厂细泥系统高硫高泥微细粒锡石矿泥难分离、富集比低的特点,进行了微细粒锡石矿泥选矿工艺研究。通过流程方案分析,确定了采用浮选脱硫脱泥—浮选锡—离心重选的原则工艺流程。采用NY捕收剂(混合改性羟肟酸,黄药与少量起泡剂复配)进行脱硫脱泥浮选,ZY捕收剂(混合羟肟酸与脂肪酸类复配)浮选锡,Slon-160离心机进行精选,在最佳浮选药剂制度及技术参数条件下,最终获得锡精矿锡品位26.72%、回收率70.77%的试验指标,实现了高硫高泥微细粒锡石的高效回收,突破了巴里选矿厂细泥系统传统重选工艺回收率低、富集比低的技术瓶颈。

It is difficult to separate and enrichment for micro-fine cassiterite slime with high sulfur and mud in the fine mud system of Bali plant,Guangxi Gaofeng Mining Co.,Ltd.An experimental study of recovering tin was carried out.The principle of flotation desulphurization and desliming-tin flotation-centrifugal gravity separation was determined through the analysis of the flowsheet.Under the condition of the optimal reagent system and technical parameters,the ideal test indicators were obtained with tin grade 26.72%in the tin concentrates and the recovery rate 70.77%of tin in fine mud system.The highly effective recycling technology for micro-fine cassiterite with high sulfur and mud has been industrialized.It breaks through the technical bottleneck of low recovery and enrichment ratio in traditional gravity separation process of fine mud system in Bali plant.