DE3713742

The preparation method is characterised in that the calcium sulphate hemihydrate and expanded rock are mixed in quantities giving a weight ratio of calcium sulphate:expanded rock of >5:l up to 10:1 in the adsorbent agent, mixing is achieved by feeding the calcium sulphate hemihydrate and expanded...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	KURANDT, HANS-FRIEDRICH. DR., 2120 LUENEBURG, DE, KAMPNER, KARL-HEINZ., 2121 EMBSEN, DE, HAMM, HEINER. DR., 8700 WUERZBURG, DE, HARTMANN, PETER. DR., 8711 MAINBERNHEIM, DE
Format:	Patent
Sprache:	eng
Schlagworte:	AGRICULTURE ANIMAL HUSBANDRY CARE OF BIRDS, FISHES, INSECTS CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY FISHING FORESTRY HUMAN NECESSITIES HUNTING NEW BREEDS OF ANIMALS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR THEIR RELEVANT APPARATUS TRANSPORTING TRAPPING
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Beschreibung
Zusammenfassung:	The preparation method is characterised in that the calcium sulphate hemihydrate and expanded rock are mixed in quantities giving a weight ratio of calcium sulphate:expanded rock of >5:l up to 10:1 in the adsorbent agent, mixing is achieved by feeding the calcium sulphate hemihydrate and expanded rock together into a container and stirring these together by means of a stirring device to give a granulated mixture, the granulated mixture has a residence time of at least 4 minutes after addition of the water and before drying, and the dry calcium sulphate dihydrate is converted by calcination at 120-200@C to calcium sulphate hemihydrate in such a proportion that the adsorbent agent has a total water content of 1% by weight to 16% by weight.