朝鲜某复杂难选钽铌锆矿选矿试验研究

针对朝鲜某大型碱性花岗岩型钽铌锆矿床矿石化学成分复杂，有用矿物嵌布粒度细，有用矿物之间以及与脉石矿物之间解离性差的特点，采用细磨-脱泥-钽铌锆混合浮选流程处理该矿石，在原矿Nb₂O₅、ZrO₂、Ta₂O₅品位分别为1.17%、3.12%、0.046%情况下，最终可获得Nb₂O₅、ZrO₂、Ta₂O₅品位分别为9.43%、24.95%、0.36%，回收率分别为77.37%、76.77%、75.13%的钽铌锆混合精矿。

Experiment Research on a Complex Refractory Tantalum Niobium Zirconium Ore from North Korea

Aiming at a large alkaline granite type tantalum niobium zirconium deposit with characteristic of complex ore chemical composition,fine dissemination size of useful mineral,poor dissociation of useful minerals and gangue mineral,fine grinding-desliming-bulk flotation of tantalum and niobium,zirconium was used to process this ore.A bulk concentrate with 9.43% of Nb2O5 and 24.95% of ZrO2 and 0.36% of Ta2O5 with a recovery of 77.66% Nb2O5 and 76.70% ZrO2 and 75.13% Ta2O5 was obtained by closed-circuit test from the raw ore with grade of 1.17% Nb2O5 and 3.12% ZrO2 and 0.046% Ta2O5.