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    • 6. 发明专利
    • Floatation device of particles in a liquid
    • JP5343246B2
    • 2013-11-13
    • JP2008207226
    • 2008-08-11
    • 株式会社オ−ラテック
    • 俊彦 江口
    • C02F1/24B01F15/04
    • PROBLEM TO BE SOLVED: To provide a method for floating and separating particles having large specific gravity in a liquid by using nanobubbles and microbubbles simultaneous, and to provide an apparatus therefor. SOLUTION: The floatation separation apparatus is for floating and separating the particles in the liquid by connecting a nanobubble generating pipe 10a and a microbubble generating pipe 10b to a separation tank housing the liquid containing the particles and introducing the nanobubbles and microbubbles from each pipe into the liquid containing the particles. The nanobubble generating pipe 10a and the microbubble generating pipe 10b are connected to a pressurized liquid introducing pipe 7 into which a pressurized liquid having pressurized and dissolved gas is introduced through a pressure control valve 8 and are provided each with a reduced diameter part. The diameter of a discharge flow path in the reduced diameter part is set so that the ratio (P2/P1) of the pressure (P2) in the nanobubble generating pipe and the microbubble generating pipe to the pressure (P1) in the pressurized liquid introducing pipe becomes equal to the generating ratio of the nanobubbles and microbubbles. COPYRIGHT: (C)2010,JPO&INPIT