FILTRATION

I filtri sottovuoto a nastro sono perfetti per i processi dove sono presenti solidi pesanti e vaste superfici di filtrazione

VACUUM BELT FILTERS

Vacuum belt filters are ideal for filtration processes that involve the presence of heavy solids and large filtration surfaces.

These filters are a subcategory of horizontal vacuum filters, with which they share great flexibility and a high filtration rate.

The main feature of the belt filter system is the additional presence of the filtration cloth and a special reinforced rubber belt with draining grooves.

Specifically, the rubber belt is activated by means of a variable speed drum, while the vacuum action is created by a vacuum box system.

The belt is long-lasting, easy to replace, and guarantees a perfect seal between the moving part of the filter (the rubber belt and the cloth) and the fixed part (the vacuum box).

At the end of the filtration phase, the cake is removed by means of a knife discharge device.

At this point, the cloth moves under the rubber belt and is cleaned by a spray nozzle washing system.

The filtered liquid is drained through the central grooves of the belt and sent to the vacuum box and filtered liquid collector.

THE DISTINGUISHING FEATURES OF VACUUM BELT FILTERS

The ability to filter heavy solids is certainly one of the main distinguishing features of vacuum belt filters.   It is worth noting that they also have elements such as a cloth, reinforced rubber belt and vacuum box system, which permit operation with large filtration surfaces.   Here are other features of this filtration system:  
  • Easy, low-cost maintenance
  • High-efficiency washing
  • Separation of mother liquor from washing water
  • The thickness of the cake, vacuum intensity and belt speed are independent and variable to obtain the optimal result
  • The filters can be equipped with a partial or complete protective hood
  • Option of steam drying (last stage)
  • Available in a wide range of sizes from 0.1 m2 (pilot unit) up to 150 m2

THE APPLICATION MARKETS FOR VACUUM BELT FILTERS

Vacuum belt filters are ideal for use in application markets that involve large filtration surfaces and the presence of heavy solids.

The following are the main areas of application for belt filters:

  • Gypsum dewatering systems (FGD and WFGD)
  • Sludge from the production of metal
  • Sludge from aluminium foundries
  • Dehydration of minerals
  • Production of chemical products
  • Tartaric Acid, Citric Acid
  • Boric Acid, Phosphoric Acid
  • Phosphates, Sulphates
  • Sulphur Recovery
  • Mining Sector
  • Copper, Nickel and Zinc
  • Silver, Iron Ore, Ashes, Gold
  • Lead, Coal
  • Chemicals and Pharmaceuticals

FULL TECHNICAL INFORMATION ON VACUUM BELT FILTERS

In the area below we have grouped the technical information of our range of vacuum belt filters.

FUNCTIONAL DRAWINGS OF VACUUM BELT FILTERS

Below we have grouped the functional drawings of the TECNIPLANT vacuum cloth filters.

These allow you to obtain more information on our wastewater filtration solutions.