Production of calcium silicate having high specific bulk volume

Details Production of calcium silicate having high specific bulk volume Production of calcium silicate having high specific bulk volume

1978-12-29

1980-10-07

Poer, James

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

C09C 102

Patent

active

042266360

ABSTRACT:
A process for producing calcium silicate of the rational formula 2CaO.3SiO.sub.2.nSiO.sub.2.mH.sub.2 O wherein m is a number of more than 0, and n is a number of 0.1 to 10 from a silicate compound and a calcium compound, which comprises contacting a water-soluble silicate compound with a calcium compound in an aqueous medium, and heating them to a temperature of 150.degree. to 250.degree. C., the amount of the aqueous medium being 5 to 100 times the weight of the calcium silicate obtained, and a process for producing calcium silicate or a calcium silicate-gypsum composite, which comprises adding a water-soluble silicate or its aqueous solution gradually to an aqueous suspension of gypsum, and heating the mixture to a temperature of 150.degree. to 250.degree. C. The calcium silicate and the calcium silicate-gypsum composite, which have a structure composed of an assembly of petal-like flakes, are useful as an adsorbent carrier, a delusterant or a filtration aid.

REFERENCES:
patent: 2679463 (1954-05-01), Alexander et al.

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