浮选方法提高三水铝石铝硅比的研究

Investigation of Raising Silicon to Aluminum Ratio of Gibbsite by Flotation

以印尼的三水铝石型铝土矿为原料,氧化石蜡皂和塔尔油作为捕收剂,碳酸钠、水玻璃、六偏磷酸钠等作为调整剂,通过磨矿细度、捕收剂和调整剂用量、浮选浓度等多因素条件试验,探讨正浮选方法提高三水铝石铝硅比的影响因素和适宜工艺条件。试验结果表明,当磨矿细度75%-200目时,碳酸钠用量4 000 g/t、水玻璃2kg/t、六偏磷酸钠250 g/t、捕收剂用量700 g/t、浮选矿浆浓度28.57%,精矿回收率达到63.49%,精矿铝硅比达到11.18。

The flotation experiments of Indonesia gibbsite ore were conducted using oxidized paraffin soap and tall oil as the collectors and sodium carbonate, sodium silicate and sodium hexametaphosphate as the regulators. Through the conditional experiments of multi-factors such as grinding fineness, collector and regulator dosage and pulp concentration, the factors influencing the improvement of the silicon-aluminum ratio of gibbsite and the suitable flotation conditions were investigated. The experiment results show that a flotation concentrate having a recovery of 63.49% and an aluminum to silicon ratio of 11.18 could be obtained at a grinding fineness of 75% -200 mesh, sodium carbonate dosage of 4000g/t, sodium silicate dosage of 2kg/t, sodium hexametaphosphate dosage of 250g/t , collector dosage of 700g/t and pulp concentration of 28.57%.