ELRUS Offers 18 Tips for Efficient Screening

ELRUS Aggregate Systems offers these small checks to ensure screening success:

  • Check oil levels and grease bearings, and shaft.
  • Adjust tension springs and drive belts.
  • Make sure there is no build up on the hopper or cross member.
  • If the screen hits any parts it may cause the screens performance and or damage the screen.
  • Check screen cloth for physical damage.

Unsure if low production is caused by screening issues?

  • While operating at capacity, take a sample from the cone feed belt.
  • Run a quick sieve analysis of this sample.
  • You should find less than 10 percent of your material is finer than the size of your screen size.

If you have more than this, check the following:

  • Are your screens plugged? You may need to clean or use a self-cleaning screen cloth.
  • Is the bed depth excessive? Can you see the clamp bars?
  • Check the speed of the screen at the shaft with a tachometer. Even a small reduction in screen speed will cause serious problems. Could be a worn sheave or poor belt tension.
  • You may be exceeding the capacity of the screen.
  • Do you have a loose screen panel? You will see material jumping on the cloth.

Loose Screens?

  • A sure sign of loose screens is a piece of screen cloth that is always breaking in the same location, usually over a bar.
  • Are the bolts correctly tightened?
  • Are the clamp bars worn out? Be sure to check the inside where they fit to the screen hooks.
  • Check crown rubber, may be missing or in poor shape.
  • Is the crown worn down? If the plant was operated with crown rubber missing at one time the crown bars may be worn down. Repair as required.

ELRUS Aggregate Systems, www.elrus.com

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