C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/69
C01B 25/32 (2006.01)
Patent
CA 2036731
The present invention provides a process for the production of granulated dicalcium phosphate dihydrate from fine-grained, powdered dicalcium phosphate dihydrate, wherein 80 to 95% of dicalcium phosphate dihydrate with a grain size of less than 120 µm. and 20 to 5% of calcium hydroxide with a grain size of less than 120 m. are dry mixed and continuously sprayed and granulated in a fluidised bed with 20 to 50% of water, referred to the amount of solids, in which is contained an amount of phosphoric acid sufficient for the neutralisation of the calcium hydroxide, the granulate obtained is dried at a temperature of 150 to 200°C. and the portions of coarse and fine grained material are optionally sieved off.
Merkenich Karl
Rau Karl-Martin
Stoffel Erwin
Bk Ladenburg Gmbh
Marks & Clerk
Merkenich Karl
Rau Karl-Martin
Stoffel Erwin
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