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    COAL FLOTATION PROCESS
    16.
    发明授权
    COAL FLOTATION PROCESS 失效
    方法煤炭浮选

    公开(公告)号：EP0662865B1

    公开(公告)日：1997-04-02

    申请号：EP93920626.4

    申请日：1993-09-28

    申请人： FORDING COAL LIMITED

    发明人： McKENNY, Colin, J. ,  RAYMOND, Brian, W.

    IPC分类号： B03D1/02 ,  B03D1/004 ,  B03B1/04

    CPC分类号： B03B1/04 ,  B03D1/0046 ,  B03D1/006 ,  B03D1/008 ,  B03D1/01 ,  B03D1/012 ,  B03D1/02 ,  B03D2201/04 ,  B03D2203/08

    摘要： A process for the flotation of particles of lignitic coal, subbituminous coal or oxidized bituminous coal contained within a slurry of coal and gangue, comprising the steps of dispersing a surfactant throughout the slurry, first conditioning the slurry such that the surfaces of the particles of coal are selectively coated by the surfactant to produce activated particles of coal, dispersing an oil throughout the slurry, second conditioning the slurry such that the surfaces of the activated particles of coal are selectively coated by the oil to produce oiled particles of coal, and floating the oiled particles of coal on the surface of the slurry for separation from the slurry and gangue.