Method for drying particulate material

Details Method for drying particulate material Method for drying particulate material

F - Mech Eng,Light,Heat,Weapons

26

B

F26B 23/02 (2006.01) C01F 7/02 (2006.01) C01F 7/44 (2006.01) C22B 21/00 (2006.01) F26B 1/00 (2006.01) F26B 3/04 (2006.01) F26B 17/10 (2006.01)

Patent

CA 2160049

A method for drying particulate material, the method comprising the steps of: a) subjecting a first portion of a wet particulate material feed to pre- drying to produce at least partially dried particulate material and moisture; (b) heating the at least partially dried particulate material, utilising excess combustion air, to a temperature higher than the temperature of the pre-drying to produce hot particulate material, water vapour and products of combustion; c) passing the water vapour and products of combustion from step (b) to the pre-drier of step (a); d) mixing the hot particulate material with a second portion of the wet particulate material feed to cool the hot particulate material; and e) further cooling of the cooled particulate material and subsequent separation to produce a low temperature particulate material product.

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