Process for preparing calcium silicate shaped product

Details Process for preparing calcium silicate shaped product Process for preparing calcium silicate shaped product

B - Operations, Transporting

28

B

25/129

B28B 1/26 (2006.01)

Patent

CA 1182980

ABSTRACT OF THE DISCLOSURE: A process for producing a shaped calcium silicate product comprises (a) forming an aqueous slurry of calcium silicate hydrate obtained by heating and reacting a calcareous source with a siliceous source in water as a dispersion; (b) molding said aqueous slurry into a shaped object; (c) heat treating said molded product under the conditions specified by the following relationships (I) and (II): 100 ? .theta. ? T ......(I) 50 ? .theta. ? 300 ......(II) wherein 0 represents the temperature (°C) of the interior of said molded product and T represents the time (hrs), with the proviso that the amount of water loss during said heat treatment is less than 25 wt.%; (d) optionally steam curing said treated product; and (e) drying the cured product.

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