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前言选煤厂通常利用重介质选煤法及跳汰选煤法等,对粗粒煤进行加工,而对难以处理的微粉煤,则多采用气泡接触型浮选机加以分选。虽然如此,但在浮选尾煤中仍残留有粒度44微米以下的微粉煤不能回收。另外,在废水处理过程普遍使用的气泡析出型浮选机,它虽适宜于微粒子的处理,但仅能用于固-液分离的作业,而适用于固-固分离作业的用例几乎没有见
Preface Coal preparation plants usually use heavy-medium coal preparation method and jigging method to process coarse-grained coal, while for difficult-to-process fine coal, air-contact type flotation machines are often used for sorting. Nonetheless, the pulverized coal remaining below 44 microns in flotation tailings remains unrecoverable. In addition, bubble-type flotation machines, which are commonly used in wastewater treatment, are suitable for the treatment of fine particles but can only be used for solid-liquid separation, and the cases suitable for solid-solid separation are scarcely seen