The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1992
Filed:
Mar. 01, 1991
Karl-Martin Rau, Ettlingen, DE;
Karl Merkenich, Furth/Fahrenbach, DE;
Erwin Stoffel, Laudenbach, DE;
BK Ladenburg GmbH, Ladenburg, DE;
Abstract
A process is disclosed for the production of granulated dicalcium phosphate dihydrate from fine-grained, powered dicalcium phosphate dihydrate, wherein 80 t0 95% of dicalcium phosphate dihydrate with a grain size of less than 120 .mu.m and 20 to 5% of calcium hydroxide with a grain size of less than 120 .mu.m are dry mixed and continuously sprayed and granulated in a fluidized bed with 20 to 50% of water, relative to the amount of solids, in which is contained an amount of phosphoric acid sufficient for the neutralization of the calcium hydroxide. The granulate obtained is dried at a temperature of 150.degree. to 200.degree. C., and the portions of coarse and fine grained material are optionally sieved off.