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Scroll Screen Centrifuges

Basket view showing scraper and screen.Scroll screen centrifuge basket.SHC-250 scroll screen centrifuge. 

 

 

 

 

 

 

 

The scroll-screen centrifuge consists of a horizontally driven scroll conveyor, which revolves at an optimum differential speed within a rotating conical basket. Solids separation from the mother liquor is achieved by the action of centrifugal force, operating at high g force, while discharge takes place via the inclination of the basket and the differential speed of the scroll. At the point of separation, solids are conveyed forwards by the scroll to discharge at the widest open-end of the filter basket, with the filtrate passing directly through the screen.

  • The rotating parts are easily accessible
  • Sophisticated fully automatic CIP systems also available
  • Gas tight options for Nitrogen Purging
  • Pressurised to 500mm water gauge if required
  • The machine and drive motor mounted on a support frame
  • Rubber anti vibration mountings
  • Material distributed evenly around the basket by the scroll, preventing out of balance
  • Materials of construction include stainless steels, hastelloy, titanium etc
  • Abrasion resistant protection
  • The machines vary in size from 200mm to 800mm diameter and can handle feed material with widely varying solid/liquid ratios

This type of centrifuge can be equipped with automatic scroll speed adjustment to accommodate changing process requirements, which completely eliminates operator intervention and process downtime. Scroll-Screen machines have an excellent washing capability and can be used for solids-liquid separation, where the feed materials have high particle sizes, i.e. 50 microns or above.

  • Compliant with latest CE regulations
  • Low cake moisture – high solid recovery
  • Continuous operation
  • Constant dewatering efficiency
  • Excellent cake washing facilities
  • Separates both floating and sedimenting solids
  • Minimum power consumption
  • Low friction cyclo gear
  • Sealed and pressure tight versions
  • Compact space saving design – small footprint
  • Compliant with environmental noise regulations
  • Low maintenance
  • Construction materials and added wear protection to meet process needs

Sizes range from 200 - 800mm diameter

ImageTypical three stage scroll screen operation.

Typical applications for the scroll screen include :

  • Polystyrene
  • Polycarbonate
  • TPA
  • Sodium Hypochlorite
  • Amino acid
  • Ammonium sulphate
  • Copper sulphate
  • Xylitol

... plus many others.

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