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新发现的贵州晴隆沙子大型富钪锐钛矿矿床,属于与峨眉山玄武岩喷发作用有关的热水沉积-残坡积型矿床。TiO2主要以微细粒包裹物形式赋存于硅酸盐和石英中,其次以类质同像存在于褐铁矿中,少量以独立矿物形式存在于粒度>0.04mm的锐钛矿集合体中;矿石中的钪则绝大部分为离子吸附型,类质同象型为辅赋存在高岭石等矿物中,属极难选矿石,但采用“焙烧-酸浸-碱浸”工艺可选,得到TiO2品位42.32%锐钛矿,氧化钪99.99%的产品及铁红和聚硅酸铝盐(PSA)混凝剂副产品,实现了无尾矿的零排放。
The newly discovered large clear scandium deposit in Qinglong sand, Guizhou belongs to the hydrothermal sedimentary-residual-slope type deposit associated with the eruption of Basalt Emeishan. TiO2 mainly occured in silicate and quartz in the form of fine-grained inclusions, followed by isomorphism in limonite and a small amount in the form of independent minerals in anatase aggregates> 0.04 mm in size. Scandium ore is the vast majority of ion-adsorption type, the same type of assimilation is the existence of minerals such as kaolinite, is a very difficult mineral processing ore, but the use of “roasting - acid leaching - alkali leaching” process The products with 42.32% TiO2, 99.99% scandium oxide and iron red and polysilicate aluminum salt (PSA) coagulant by-products were obtained, resulting in zero tailings-free emission.