C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
261/70
C04B 35/04 (2006.01) C04B 28/32 (2006.01) E04C 2/16 (2006.01)
Patent
CA 1064976
ABSTRACT OF THE DISCLOSURE Processes for the production of a building material in the form of woodstone panels or strands which comprises preparing a mixture consist- ing essentially of between 30 and 40 parts by weight of finely divided cal- cined magnesite, a wood filler consisting predominantly of wood chips in an amount that is between 3 and 4 times, the weight of the calcined magnesite. between 2 and 8, and preferably between 4 and 6, parts by weight of inactive diatomaceous earth, between 9 and 12 parts by weight of magnesium chloride in the form of an aqueous solution, and sufficient additional water to bring the water content of the mixture to between 30 and 60 parts by weight, com- pressing the said mixture into a desired shape by subjecting it to a pressure between 15 and 50 bars and hardening the said compressed mixture within a period of 20 minutes at a temperature between 120 and 220°C, and buildingmaterials produced by the said processes.
238957
Na
Zur Verth Joachim
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