VERFAHREN ZUM HERSTELLEN VON GRANULIERTEM DICALCIUMPHOSPHATDIHYDRAT

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...

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Bibliographische Detailangaben
Hauptverfasser: RAU, KARL-MARTIN, MERKENICH, KARL, STOFFEL, ERWIN
Format: Patent
Sprache:ger
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Zusammenfassung: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 DEG to 200 DEG C., and the portions of coarse and fine grained material are optionally sieved off.