一种储量巨大的典型细粒难选贫锰矿,经历了长时间的重选、浮选、强磁选及焙烧磁选的研究均难于回收。而用连二硫酸法处理虽能得到很好的指标,但成本高。从矿物结构找到其难选的真正原因,发展了一种“自磨解洗——剪切洗矿——超声波分散高梯度磁选”新工艺。本文重点研究了用于细粒的剪切洗矿。 A large amount of typical fine grain refractory manganese ore, after a long time of re-election, flotation, strong magnetic separation and roasting magnetic separation research are difficult to recover. With sulfuric acid even though the law can get a good indicator, but the high cost. From the mineral structure to find the real reason for its hard to choose, the development of a “self-abrasive washing - shear washing - Ultrasonic dispersion of high gradient magnetic separation,” a new technology. This article focuses on shear washing for fine particles.