MET SCREENS

Information on MET SCREENS


The MET screens were patented in 1992 and since then considerable development and testing have been done. Different patent searches were done to ensure that no other patent was infringed.

The screen panels are secured to the sub-frames by means of T-Bars which are normally only on two opposite sides of the panel, each with 2 pins through the sub-frame. If required, T-Bars can be fitted on all four sides of a panel with 2 or 3 pins each, depending on specific applications and requirements. The T-Bar is locked onto the sub-frame by means of a 12mm pin or in the case of an emergency a M12 x 80 bolt.
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FEATURES

  • LONGER LIFE
    A castable grade polyurethane is used instead of injection moulded polyurethane which proved to give up to 3 times the life of injected material where the apperture remains on size for an extended period.
  • LARGER OPEN AREA
    Because of the better abrasive properties of the material being used, the ribs between the apertures and the boundaries of the panels are reduced to create more apertures.
  • RE-USABLE  T-BAR
    With deflectors or rider bars cast onto the T-Bar, it deflects the ore onto the open area to give the T-Bar a longer life than the panel. When the T-Bar is used with a second panel a saving of 10% can be achieved if a panel without a T-Bar is purchased.
  • COMPATIBILITY TO EXISTING SUB-FRAMES
    The MET panels fit the existing sub-frames of which some have 8 inch hole centres and other 150mm centres. Most panels are either 305 x 305mm or 300 x 300mm respectively or different.
  • EASE OF INSTALLATION AND REMOVAL
    The installation is easy and to remove a panel the pins are knocked through, the T-Bar lifted out and the panel removed. With water in the underpan a floating dowel can be recovered or even if it is sucked through a pump, no damage can be done.
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  • DIFFERENT T-BARS CAN BE USED
    WITH SAME PANEL

    Standard T-Bar with deflectors can be used
    • with the direction of flow (to improve the screening efficiency) or
    • across the flow (to mix the layers of ore on the deck)
  • Rider T-Bar with the direction of flow to carry the large particles to save the panel and to allow the smaller particles to reach the apertures for screening. (heavy duty)
  • Retarder T-Bar across the flow to slow the flow down to prevent water from carrying over.
  • Divider T-Bar with the direction of flow to divide the deck into more than one stream.
  • REINFORCED PANELS
    Adequate steel reinforcing is cast into the panels to ensure a flat panel throughout its life.
  • ONGOING DEVELOPMENT
    Developing and testing of new ideas are ongoing, such as the use of alumina ceramics, rubber, etc.
  • WIDE RANGE OF CASTABLE
    MATERIALS AVAILABLE

    Depending on the application and duty, different materials can be used to cast the panels, such as esters or ethers, MDI or TDI systems.
  • CHEAPER AND QUICKER MOULD MAKING (than injection moulding)
    Special moulds for relatively small runs can be made but the range of moulds are continuously being increased.
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