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    • 6. 发明专利
    • Flotation apparatus of multiple stream and product
    • 多流和产品的浮动装置
    • JPS6174660A
    • 1986-04-16
    • JP15528085
    • 1985-07-16
    • Sohio Alternate Energy Dev
    • RESUTAA II BAAGUSUFUIRITSUPU II MAKUGERIIDEBITSUDO II HAAMAN
    • B03D1/02B03D1/14
    • B03D1/02B03D1/1406B03D1/1456B03D1/1462B03D1/1475
    • An improved method and apparatus for froth flotation separation of the components of a slurry, having particular utility for the beneficiation of coal by the flotation separation of coal particles from impurities associated therewith such as ash and sulfur. In this arrangement, a forward product stream is formed in which a first quantity of chemical reagents is mixed with the particulate matter slurry. The treated particulate matter slurry is then sprayed through a nozzle onto the surface of water in a forward stream flotation tank to create a floating froth phase containing therein a first quantity of the particulate matter. The remainder of the particulate matter slurry separates from the froth phase by sinking in the water, and the froth phase is separated as a first product. The remainder of the particulate matter slurry is then directed to a scavenger product stream in which an additional quantity of chemical reagents is mixed with the remainder of the separated particulate matter slurry. The mixture is then sprayed through a second nozzle onto the surface of water in a second scavenger stream flotation tank to create a floating froth phase containing therein a second quantity of the particulate matter. The remainder of the particulate matter slurry separates from the second froth phase by sinking in the water, and the second froth phase is then separated as a second product. The amounts of the products recovered in the first and second product streams are substantially independently adjustable by controlling the amounts and types of chemical reagents added in each stream.