表面改质机与微泡浮选机在东曲矿选煤厂的应用

Application of coal surface property modifier and microbubble flotation machine at Dongqu Coal Preparation Plant

东曲矿选煤厂因入浮煤泥可浮性差、浮选设备能力不足，使浮选作业效率低；通过增设表面改质机，并用两台微泡浮选机替换了两台旧的浮选机，明显改善了分选效果；在浮选精煤灰分变化较小的情况下，浮选精煤产率提高约8％～10％，总精煤产率提高约1．6％～2．0％，取得了可观的经济效益。

The efficiency of coal flotation at Dongqu Coal Preparation Plant was low due to inferior floatability of coal slime and insufficient flotation facility.Remarkable improvement achieved by addition of a coal surface property modifier and replacement of two old flotation machines with two micro-bubble ones that:under small variation of concentrate ash,flotation concentrate yield increased 8～10%,leading to increase of overall clean coal yield at 1.6～2.0% and considerable economic benefit obtained.