Process for manufacturing cordierite compositions

Details Process for manufacturing cordierite compositions Process for manufacturing cordierite compositions

C - Chemistry, Metallurgy

04

B

25/141

C04B 35/64 (2006.01) C04B 35/195 (2006.01)

Patent

CA 1179486

ABSTRACT OF THE DISCLOSURE A process for the manufacture of industrial cordierite ceramic units containing from 45 to 68% by weight of silica 16 to 37% by weight of magnesia and 12 to 45% by weight of alumina which comprises a) mixing from 15 to 60% by weight of the non-magnetic fraction of asbestos tailings having a MgO:SiO2 of from 0.8 to 1.25 with 40 to 85% of a kaolin clay by weight and 0 to 10% of alumina; b) shaping said mixture in green unit forms; c) curing said units at room temperature for 24 h then at 110°C for 24 h; d) firing said cured units at a temperature of from 1340-1400°C.

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