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Curved Blade Radial Flow Open Turbine

  • The Curved Blade Radial Flow Open Turbine (LECBRFOT) is a stirrer for reactors and tanks in chemical and mineral processing where radial flow is needed at low liquid level, in particular to keep solids in suspension and to break up plug flow in flow-velocity-sensitive duties. It is also applied to heat transfer.

    How it works

    The curved blade turbine (CBT) discharges liquid radially. Because it keeps working at a low liquid level, it suits batch solid suspension and the drainage stage of a process, when all solids must be carried out of the tank as the level falls. In the selection table the turbine type runs at 50 to 350 r/min for low and medium viscosity liquids, giving medium shear with cyclic flow and suiting medium-sized equipment.

    Impellers are made from 30 to 2000 mm diameter for shafts from 10 to 300 mm, with 4, 6, 8 or 10 blades. Available materials are carbon steel, SS304, SS316, titanium, nickel, Hastelloy B or C, Monel, zirconium, Inconel and tantalum. Shaft diameters matched to each impeller size are listed below.

    Impeller diameter, mmShaft diameter, mm
    15030, 35
    20030, 40
    25035, 40
    30040, 45, 50
    40045, 50, 55
    50060, 65, 70
    60065, 70, 80
    70070, 80, 90
    80075, 85, 95
    90080, 90, 100

    What is included

    • Curved blade radial flow open turbine in the selected material, sized to the specified shaft diameter

    Specify for your project

    • Impeller diameter and shaft diameter from the table
    • Number of blades: 4, 6, 8 or 10
    • Material of construction
    • Liquid viscosity, solids content and mixing speed
    • Minimum liquid level at which suspension must be maintained
    • Reactor or tank on which the impeller is mounted

    This description defines the product family. Guaranteed performance, included hardware, exclusions, interfaces and acceptance criteria are stated only in the project-specific technical proposal and approved datasheet.

    • Curved Blade Radial Flow Open Turbine
  • Technical Requirements

    • Diameter of impeller: 30~2000 mm
    • Diameter of shaft: 10~300 mm
    • QTY of impeller: 4, 6, 8, 10
    • Available material:CS, SS304, SS316, Titanium, Nickel, Hastelloy B/C, Monel, Zirconium, Inconel, Tantalum
    Impeller Dj(mm)

    Shaft d(mm)

    150 30;35
    200 30;40
    250 35;40
    300 40;45;50
    400
    45;50;55
    500 60;65;70
    600 65;70;80
    700 70;80;90
    800 75;85;95
    900 80;90;100

    Quick Selection

    Type Mixing speed Application Feature

    Marine propeller

    Broad blade Propeller

    100-500r/min Low viscosity

    Low shear, low energy consumption

    Strong circulation

    High-speed operation

    Paddle type

    • Straight blade
    • Pitched blade
    • Curved blade
    50-200r/min
    Medium viscosity

    Close to the tank wall

    Heavy duty, slow operation

    High energy consumption

    Inefficient mixing

    Turbine type

    • Straight blade
    • Pitched blade
    • Curved blade
    50-350 r/min

    Low viscosity

    Medium viscosity

    Medium shear and cyclic

    Medium speed operation

    Suitable for medium equipment

    Disk turbine

    (Flat blade, pinched blade,

    curved blade, )

    100-350 r/min

    Low viscosity

    Medium viscosity

    Strong shear, gas dispersion

    Medium speed operation

    High energy consumption

    Frame type

    Anchor type

    Helical Blade

    20-150 r/min High viscosity

    Low shear and speed

    Strong cycle ability

    High energy consumption

    Self inducing type

    200-500 r/min

    Liquid-gas mixing

    Strong self-inducing capacity

    High gas consumption

    High speed operation