MEMBRANE SPARGERS FOR GRAVITY SEPARATORS AND FLOTATION MACHINES

    公开(公告)号:WO2022249144A1

    公开(公告)日:2022-12-01

    申请号:PCT/IB2022/055014

    申请日:2022-05-27

    Applicant: FLSMIDTH A/S

    Abstract: A separator device (100) includes a separation chamber (107) defined at its lower end by a fluidization fluid panel (111). The separation chamber (107) receives incoming slurry (113) via a slurry inlet (102). The separator device may be characterised in that means (122) for supplying pre-sheared aerated fluidization fluid is provided above the fluidization fluid panel (111). The means (122) for supplying pre-sheared aerated fluidization fluid includes a novel sparger (119) comprising a flexible perforated membrane which is configured to supplementally shear the pre-sheared aerated fluidization fluid and uniformly distribute microbubbles (129) throughout the separation chamber (107).

    FEEDING AND SPARGING ARRANGEMENT FOR COLUMN FLOTATION APPARATUS

    公开(公告)号:WO2020095247A1

    公开(公告)日:2020-05-14

    申请号:PCT/IB2019/059583

    申请日:2019-11-07

    Applicant: FLSMIDTH A/S

    Abstract: A flotation column (1000) substantially as shown and described, the flotation column (1000) having a column tank (1011) and a single upper feed inlet (1012) to supply feed slurry (1013) to the column tank (1011) via a tubular annular manifold (1019') of an upper feed distributing and sparging system (1019); the upper feed sparging system (1019) comprising a number of upper feed cavitation spargers (1014) feeding upper inlets (A) located above a vertical mid-point (1018) of the column tank (1011) with the feed slurry (1013).

    APPARATUS AND METHOD FOR UNIFORMLY INTRODUCING AIR INTO A FLUIDIZED BED SEPARATOR

    公开(公告)号:WO2020152651A1

    公开(公告)日:2020-07-30

    申请号:PCT/IB2020/050578

    申请日:2020-01-24

    Applicant: FLSMIDTH A/S

    Abstract: A fluidized bed separator (100) may include a plurality of nozzles (122) provided to a fluidized bed panel (110); a slipstream outlet (124) fluidly connecting a fluidization fluid distribution chamber (108) to a pump (120); a dissolved gas solution inlet (123) for returning dissolved gas solution (121) to the fluidization fluid distribution chamber (108) from the pump (120); a manifold (140) configured with multiple entry points (141); an air distribution chamber (128) provided below a fluidization fluid distribution chamber (108); means (119) for pre-aerating feed slurry (113) to the fluidized bed separator (100); and/or means, such an inlet (119) for delivering gas (118) (e.g., air), to the pump (120).

    APPARATUS AND METHOD FOR REAGENTIZING AND AERATING FEED TO FLOTATION MACHINES

    公开(公告)号:WO2023007425A1

    公开(公告)日:2023-02-02

    申请号:PCT/IB2022/056995

    申请日:2022-07-28

    Applicant: FLSMIDTH A/S

    Abstract: A flotation circuit (1) is characterised in that it comprises a sparger (8) having a sparging mix conduit or chamber (45); and a tube (31) comprising a flexible perforated membrane disposed within the sparging mix conduit or chamber (45). The tube (31) is configured to receive an aerated fluid (27) comprising a combination of sparger water (13), reagent (17), and sparger air or gas (21) therein, shear the aerated fluid (27) upon passing of the aerated fluid (27) through the flexible perforated membrane of the tube (31), and disperse sheared aerated fluid (27) into the sparging mix conduit or chamber (45) where it is combined with incoming feed slurry (2) or diluted incoming feed slurry (4) moving within the sparging mix conduit or chamber (45) to form reagentized aerated slurry (29) for feeding a flotation apparatus (30).

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