大红柳滩某低品位锂铍矿石表面清洗浮选工艺研究

以大红柳滩某锂铍多金属矿为研究对象，研究了N甲基9十七烯酰胺基乙磺酸钠和N-甲基脂肪酰胺基乙酸盐作清洗剂时，矿物表面清洗浮选对锂铍矿物可浮性及锂铍分离效果的影响，并对矿物表面清洗浮选的试验条件进行了优化。闭路试验的结果表明，在磨矿细度-0.074 mm含量占72%的条件下，清洗浮选可以获得锂精矿Li₂O品位为6.01%、Li₂O回收率为87.60%;铍精矿BeO品位6.57%、BeO回收率62.90%的良好指标。其中，锂精矿中BeO品位为0.049%、BeO回收率为31.20%,较好地实现了锂铍分离。

Study on Surface Cleaning Flotation Process of a Low Grade Lithium-beryllium Ore in Dahongliutan Region

In this paper, a lithium-beryllium polymetallic ore in Dahongliutan region was taken as the research object. The effects of mineral surface cleaning flotation on the floatability of lithium-beryllium minerals and the separation effect of lithium-beryllium minerals were studied when N-methyl-9-heptadecene amide sodium sulfonate and N-methyl fatty amide acetate were used as cleaning agents. The experimental conditions of mineral surface cleaning flotation were optimized in this study. The results of closed-circuit test show that under the grinding fineness of -0.074 mm 72%, the lithium concentrate with Li2O grade of 6.01% and Li2O recovery of 87.60%, and the beryllium concentrate with BeO grade of 6.57% and BeO recovery of 62.90% can be obtained. At the same time, the grade of BeO in the lithium concentrate is 0.049% while the recovery of BeO is 31.20%, which means lithium-beryllium separation can be achieved by the cleaning flotation process.