论文部分内容阅读
碲被广泛应用于冶金、电子、化工、玻璃、陶瓷及医药等行业和领域,特别是在新能源新材料、国防与尖端技术领域中具有不可替代性,是一种具有重大前景的战略资源。某贫碲矿石矿物组成复杂,共生关系密切,同时部分磁黄铁矿在磁性、可浮性与辉碲铋矿相似,属较难分选矿物。针对矿石特点,采用磁-浮选联合的选矿工艺以及粗精矿再磨工艺,解决了辉碲铋矿与磁黄铁矿难分离的问题。试验选取乙硫氮与丁基黄药作为浮选辉碲铋矿的混合捕收剂,氧化钙、水玻璃与亚硫酸钠作为脉石矿物与硫铁矿的抑制剂,经预先弱磁选脱硫,脱硫尾矿经两次粗选,一次扫选,粗精矿再磨两次精选,可获得Te精矿品位为18.94%,回收率为91.40%的良好指标。磁-浮选联合流程及粗精矿再磨工艺,改善了Te的浮选指标,实现了难选低品位辉碲铋矿的有效回收,研究结果可为该地辉碲铋矿物的有效开发利用提供技术指导。
Tellurium is widely used in industries and fields such as metallurgy, electronics, chemical engineering, glass, ceramics and medicine. It is an important strategic resource with great irreplaceability in the fields of new energy and new materials, defense and cutting-edge technologies. The mineral composition of a poor tellurium ore is complex and closely related to symbiosis. At the same time, part of pyrrhotite is similar in magnetism and floatability to bismuth tellurite, which is more difficult to separate minerals. According to the characteristics of ores, the combination of magnetism and flotation, as well as the process of coarse ore regrinding are adopted to solve the problem that it is difficult to separate bismuth telluride from pyrrhotite. In the experiment, Bthiazide and butyl xanthate were selected as mixed collector of flotation telluride bismuth ore, calcium oxide, sodium silicate and sodium sulfite as gangue minerals and inhibitors of pyrite. After pre-weak magnetic separation desulfurization and desulfurization Tailings after two rough selection, a sweep selection, coarse concentrate grinding again two selected, available Te grade grade of 18.94%, a good indicator of the recovery rate of 91.40%. The combination of magnetic-flotation process and coarse ore regrinding process improved the flotation index of Te and realized the effective recovery of refractory low grade telluride bismuth ore. The research results can be used for the effective development and utilization of this telluride bismuth mineral Provide technical guidance.