细粒级低品位钽铌稀土矿选矿工艺研究

摘要

A combined technology, Magnetic-Gravity Separation, has been researched for a fine low-grade RE-Nb-Ta ore. As feeding ore containing 0.032%of (Ta+Nb)2O5 and 0.092%of REO, a concentrate containing 3.444%of (Ta+Nb)2O5 and 12.851%of REO with recovery of 44.13%and 57.27%can be obtained. The grade and recovery of RE-Nb-Ta concentrate was improved significantly by the technology.%针对细粒低品位钽铌稀土矿，试验研究了“磁选-重选”联合工艺。当给矿含（Ta+Nb）2O50.032%、REO 0.092%时，全流程试验可获得含（Ta+Nb）2O53.444%、REO 12.851%的钽铌稀土精矿，回收率（Ta+Nb）2O544.13%、REO 57.27%。试验数据证明，该工艺显著提高了钽铌稀土精矿品位及回收率。