关键词: 锂辉石, 重介质选矿, 浮选选矿, 工艺改造, 工业试验

Abstract: In order to improve the recovery rate of spodumene in Lijiagou，Sichuan，a single flotation test and a small test of gravity-floating combined separation process were carried out on the ore through the study of ore properties. The test results show that good technical indexes of spodumene beneficiation can be obtained by gravity-flotation combined process. The heavy medium beneficiation test was carried out on the 0.5~8.0 mm products of the ore in the on-site heavy flotation industrial test. The tailings yield was 35.76%，the tailings Li₂O grade was 0.36%，the concentrate yield was 11.57%，the concentrate Li₂O grade was 5.62%，the recovery rate was 50.56%，the medium mineral yield was 52.67%，and the medium ore Li₂O grade was 1.19%. The ore into the grinding flotation operation，concentrate and tailings as a direct product treatment，can reduce 36% of the ore into the grinding flotation operation，reduce the power load， steel ball consumption and reagent consumption，greatly reducing the production cost.

Key words: spodumene, dense medium beneficiation, flotation beneficiation, process optimization, in? dustrial test