非洲某风化伟晶岩型钽铌矿石工艺矿物学及可选性研究

采用目前国际最先进的矿物自动定量分析系统(MLA)与传统工艺矿物学研究手段相结合的方法对非洲某风化伟晶岩型钽铌矿石进行全面详细的工艺矿物学研究。结果表明,该矿石为钽铌稀有金属矿石,钽铌主要赋存于钽铌锰矿和细晶石中,矿物中钽和铌的分布率分别为84.90%和76.30%,伴生元素锂主要赋存于云母中,矿物中锂的分布率为74.34%。根据该矿石部分泥化、钽铌矿物嵌布粒度粗、矿物密度差异明显等特点,制定了预先洗矿-分级螺旋粗选-再磨摇床精选-云母浮选的选矿原则流程,实现了资源的综合利用。

Studies on process mineralogy and separability of a weathered pegmatite type tantalum-niobium ore from Africa

Comprehensive researches on process mineralogy of a weathered pegmatite type tantalum-niobium ore from Africa were carried out, by combining internationally advanced method of mineral liberation analysis with the traditional process mineralogy study. As a result, the ore is a kind of tantalum-niobium rare metal ore. The tantalum and niobium existed as magnanotantalite-mangancolumbite and microlite account for 84.90% and 76.30%, respectively, while the lithium occurred in mica accounts for 74.34%. According to ore characteristics of partly sliming, coarser mineral grains and apparent density difference of minerals, the principle flowsheet “pre-washing, grading roughing by spiral chute, regrinding concentration used shaking table and mica flotation” was worked out, thus realized the resource comprehensive utilization.