Method and equipment for thickening of suspension or pulp

Details Method and equipment for thickening of suspension or pulp Method and equipment for thickening of suspension or pulp

B - Operations, Transporting

01

D

182/58

B01D 33/06 (2006.01) B01D 33/00 (2006.01) B01D 35/28 (2006.01)

Patent

CA 1173761

ABSTRACT OF THE DISCLOSURE This invention provides a method for thickening various suspensions or slurries, comprising the steps of passing a sludge or slurry into a basin, rotating a filter unit partly submerged in the sludge or slurry, gathering the thickened sludge or slurry onto the surface of the filter unit from the sludge or the slurry in the basin, passing the sludge or slurry from the basin to above a surface level of the sludge or slurry level, prethickening the sludge or slurry prior to passing the sludge or slurry into a lower portion of the basin by removing a portion of the liquid contained therein through screening means located in an inclined wall of the basin, the inclined wall being located between a feeding-in point of the sludge or slurry and the surface level of the sludge or slurry, and collecting the liquid passing through the screening means in a receiver located below the screening means. An apparatus for carrying out the method is also provided. The invention overcomes the need to have a separate prethickner requiring a drive mechanism of its own and equipment for passing jet water into same.

377079

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