Method of producing a mineral fiber product

Details Method of producing a mineral fiber product Method of producing a mineral fiber product

C - Chemistry, Metallurgy

03

B

9/61, 49/8.9

C03B 37/10 (2006.01) D04H 1/00 (2006.01)

Patent

CA 1099926

Abstract of the Disclosure The disclosure relates to the production of a mineral fiber product for example to replace asbestos fibers in different products such as web or sheet-like products. The produced mineral fibers are free from particulate material (pearls), are uniformly dispersible and have superior sheet- forming properties. The mineral fibers can be used as additives with other dispersible fibers such as cellulose, as reinforcing material and in plasterboard for the produc- tion of molded articles such as diffusers for ventilation installations. In the method of production, at most 7% by weight of mineral fibers is dispersed in water which contains a wetting agent, undispersible material being then separated and the dispersion being then mechanically dewatered to a dry content of from 30 to 70% by weight and a fiber density of from 200 to 400 kg/m3. In a subsequent, separate stage, the fibers are redispersed in water sub- stantially without the addition of wetting agent, are provided with possible additives such as cellulose fibers, are shaped, dewatered and dried.

266969

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