Coating method for encapsulation of particulate matter

Details Coating method for encapsulation of particulate matter Coating method for encapsulation of particulate matter

B - Operations, Transporting

01

J

B01J 2/28 (2006.01) B01J 2/00 (2006.01) C05C 9/00 (2006.01) C05G 3/00 (2006.01)

Patent

CA 2123597

2123597 9310062 PCTABS00022 Particulate and fibrous materials are encapsulated with a monolithic coating of controlled thickness, by treating the particulate material with a phosphate liquid and an alkali-metal or alkaline-earth metal compound which reacts with the phosphate liquid to form a wet phosphate paste which subsequently hardens. This may be done in a granulator drum or spraying process. Deposition of an excess amount of phosphate solution on the particulate surfaces leads to bonding of the encapsulated products. The process can be repeated until the desired coating thickness is achieved.

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