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    • 6. 发明授权
    • Process for beneficiation of coal and associated apparatus
    • 煤和相关设备的选矿工艺
    • US5032257A
    • 1991-07-16
    • US415660
    • 1989-10-02
    • Amol A. Kulkarni
    • Amol A. Kulkarni
    • B03D1/01B03D1/02B03D1/10
    • B03D1/02B03D1/01B03D1/10B03D1/24B03D2203/08
    • A process for removing mineral matter from coal is disclosed. The process involves creating ultrafine coal by pulverizing the coal feed material and mixing it with an aqueous amine solution. The coal/amine solution is fed into a flotation cell and gaseous carbon dioxide is charged into the cell. The carbon dioxide reacts with the amine solution to form bubbles which carry the "clean" coal component of the coal feed material to the top of the cell for subsequent removal from the cell. The bubbles are reduced in size as they move up within the cell. The mineral matter, which is heavier than the clean coal, stays at the bottom of the cell and can be removed separately. The amine and the carbon dioxide used in the process can be recycled. An associated apparatus is also disclosed.
    • 公开了一种从煤中除去矿物质的方法。 该方法包括通过粉碎煤原料并将其与胺水溶液混合来产生超细煤。 将煤/胺溶液进料到浮选槽中,并将气态二氧化碳装入电池中。 二氧化碳与胺溶液反应形成气泡,其将煤进料的“清洁”煤成分运送到电池顶部,以便随后从电池中取出。 气泡在细胞内向上移动时尺寸减小。 比清洁煤更重的矿物质停留在电池的底部,可以分开除去。 该方法中使用的胺和二氧化碳可以循环使用。 还公开了一种相关装置。
    • 10. 发明授权
    • Process for beneficiation of coal and associated apparatus
    • 煤和相关设备的选矿工艺
    • US4892648A
    • 1990-01-09
    • US340913
    • 1989-04-20
    • Amol A. Kulkarni
    • Amol A. Kulkarni
    • B03D1/01B03D1/02B03D1/10
    • B03D1/02B03D1/01B03D1/10B03D1/24B03D2203/08
    • A process for removing mineral matter from coal is disclosed. The process involves creating ultrafine coal by pulverizing the coal feed material and mixing it with an aqueous amine solution. The coal/amine solution is fed into a flotation cell and gaseous carbon dioxide is charged into the cell. The carbon dioxide reacts with the amine solution to form bubbles which carry the "clean" coal component of the coal feed material to the top of the cell for subsequent removal from the cell. The bubbles are reduced in size as they move up within the cell. The mineral matter, which is heavier than the clean coal, stays at the bottom of the cell and can be removed spearately. The amine and the carbon dioxide used in the process can be recycled. An associated apparatus is also disclosed.
    • 公开了一种从煤中除去矿物质的方法。 该方法包括通过粉碎煤原料并将其与胺水溶液混合来产生超细煤。 将煤/胺溶液进料到浮选槽中,并将气态二氧化碳装入电池中。 二氧化碳与胺溶液反应形成气泡,其将煤进料的“清洁”煤成分运送到电池顶部,以便随后从电池中取出。 气泡在细胞内向上移动时尺寸减小。 比清洁煤更重的矿物质停留在电池的底部,可以先拔除。 该方法中使用的胺和二氧化碳可以循环使用。 还公开了一种相关装置。