Process for the production of calcium hydrosilicate bounded...

C - Chemistry – Metallurgy – 04 – B

Patent

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C04B 14/06 (2006.01) B28B 5/00 (2006.01) C04B 7/13 (2006.01) C04B 16/02 (2006.01) C04B 18/24 (2006.01) C04B 28/18 (2006.01) D21C 5/02 (2006.01)

Patent

CA 2083765

Abstract of the Disclosure The invention relates to a process for the production of calcium hydrosilicate bounded shaped articles, wherein a crude mixture is prepared from quartz powder, unslaked or slaked lime and/or Portland cement and, if appropriate, a thermally activatable setting accelerator, a pore-forming agent and water and, if appropriate, other additives, the crude mixture is shaped into blanks and the blanks are autoclaved after reaching a sufficient rigidity. In order to utilise scrap materials, provision is made to use as the pore-forming agent waste paper slurry consisting of short fibres or fibre constituents, which has been digested in a pulper.

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