新型煤泥浮选捕收剂的制备及应用研究

Study & application of the making of a new collector for coal flotation

为降低捕收剂成本、提高浮选性能指标,以煤制油的废料(油煤)为主要原料,收集400℃以下馏出物制成新型捕收剂,用于太原选煤厂瘦煤的浮选实验;结果表明,在矿浆浓度80 g/L,新型捕收剂用量1 500 g/t,起泡剂用量100 g/t时浮选效果最好,此时精煤产率为80.88%,灰分为7.44%;该新型捕收剂在用量大于1 500 g/t时比煤油具有较好的选择性,且加工过程简便,成本低。

For reduction of cost of collector and upgrading flotation performance, taking waste oil from distillation below 400 ℃ from coal liquefaction as feed stock,a new collector made and used at Taiyuan coal preparation to float lean coal that,at pulp concentration of 80 g / L,collector consumption at 1 500 g / t, it behaves good selectivity, at dosage of frother 100 g / t,ash content of concentrate 7. 44%,concentrate yield 80. 88%,this new collector,when dosage over 1 500 g / t,behaves better selectivity than kerosene,and,also,its processing being simple and low cost.