某锂辉石矿强化浮选及综合利用试验研究

针对川西某伟晶岩锂辉石矿原矿性质复杂的特点,对其进行了强化浮选分离及综合利用试验研究。通过三种流程方案对比,确定最优的选别工艺"阶段磨矿-阶段选别-组合捕收剂强化浮选分离技术",可分别获得产率为5.26%的云母精矿;Li_2O品位高达6.20%,回收率为87.34%的锂辉石精矿。通过对浮锂尾矿进一步回收长石的选矿工艺流程试验,可以获得K_2O+Na_2O含量为11.33%,作业回收率为85.77%,全流程K_2O+Na_2O回收率达到50.57%,Fe_2O_3含量只有0.21%的长石精矿,在一定程度上实现了此类难选伟晶岩型锂辉石矿的综合利用。

Experimental Study on Strengthening Flotation and Comprehensive Utilization of Pegmatite Spodumene Ore

Considering the complex nature of pegmatite spodumene ore in the Western Sichuan,researches aimed at strenthening flotation separation and comprehensive utilization were carried out.Through the comparation of three flowsheets,the optimum separation process "stage grinding-stage separation-enhanced flotation separation using combined collectors" was determined.By adopting the flowsheet,the mica concentrate with yield of 5.26％ was obtained,and the Li2O concentration was up to 6.20％ and the recovery rate was up to 87.34％.In the flowsheet to recovery feldspar from the lithium tailings,feldspar concentration with K2O+Na2O content,recovery and total process recovery as 11.33％,85.77％ and 50.57％,respectively,and with Fe2O3 content of 0.21％ was obtained.To a certain degree,the comprehensive utilization of the type of refractory spodumene pegmatite ore was realized.