浮选柱反浮选胶磷矿的影响因素

Factors affecting column reverse flotation of collophanite

浮选柱是一种高效的细粒物料分选设备,但应用于胶磷矿浮选仍然受诸多因素制约.为考查浮选柱结构特征、工作参数和操作条件等因素对其分选效果的影响,采用试验室浮选柱对贵州瓮安磷矿进行了单一反浮选试验,重点研究了矿浆浓度、药剂用量、筛板充填方式和充气量对浮选柱反浮选效果的影响.结果表明,在磨矿细度为-0.074 mm占88%、矿浆浓度为25%(质量分数)、油酸钠用量为1.8 kg/t、硫酸用量为5 kg/t和充气量为400 L/h时,反浮选的分选效果较好.由于浮选柱可以通过充填筛板来改善其分选环境,因此在较优条件下,其分选效率比用浮选机时高1.57%.

Flotation column is a kind of highly efficient equipment for fine material separation,but its use in collophanite flotation is still restricted by many factors.To investigate the influences of flotation column structure characteristics,working parameters and operation conditions on the separation,single reverse flotation tests of Guizhou Wengan phosphate ore were carried out in a laboratory flotation column,in which the effects of pulp density,reagent dosage,screen packingmode and aeration quantity on the column reverse flotation were mainly studied.The results show that good reverse flotation results are achieved at the condition of-0.074 mm 88％ grinding fineness,25％ pulp density,1.8 kg/t sodium oleate dosage,5 kg/t sulfuric acid dosage and 400 L/h aeration quantity.The flotation column can improve the separation environment by packing screen,and its separation efficiency is 1.57％ higher than that of flotation machine.