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  • Vibrating Screening size control Jul 01, 2020

    Vibrating Screening size control

    Size control is the process of separating bulk material into two or more products on basis of their size. In mineral processing practices, two methods dominating size control processes are: screening and classification. As shown in the following figure, while screening uses a geometrical pattern for size control, classification uses behavior of particle’s (finer than 1 mm) motion in air or liquids...
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  • The main obstacles to efficient screening Jul 01, 2020

    The main obstacles to efficient screening

    The main obstacles to efficient screening are plugging/pegging, blinding and carryover. Each can be minimized with a variety of solutions. Plugging/pegging happens when near-size particles become lodged/wedged, blocking the openings. Generally, if loose particles/rocks (“Carrots” Shape) get stuck in the media holes it is called plugging whereas if particles get jammed in the openings, it is called...
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  • Vibrating Screen Installation, Start up and Adjustments Jul 02, 2020

    Vibrating Screen Installation, Start up and Adjustments

    Installation The supporting steel structures on which the screen and drive motor are mounted must be sufficiently strong and braced to accept without deflection the dynamic loads caused by the vibration of the screen. Adequate clearances must be allowed between the screen and the fixed structure, chutes etc., to allow enough space because the movement of the screen is large in the so-called resona...
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  • Banana screen Jul 07, 2020

    Banana screen

    Banana (Multi-slope) screens have become widely used in high-tonnage sizing applications where both efficiency and capacity are important. Banana screens typically have a variable slope of around 24°-45° at the feed end of the screen, reducing to around 0°-8° at the discharge end of the screen. Banana screens are usually designed with a linear motion/stroke vibrator. Stage 1: High velocity The fee...
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