Manufacture of mineral fiber

Details Manufacture of mineral fiber Manufacture of mineral fiber

C - Chemistry, Metallurgy

03

B

C03B 37/005 (2006.01) C03B 37/02 (2006.01) C03B 37/04 (2006.01) C03B 37/10 (2006.01)

Patent

CA 2117388

The initial stages in the manufacture of a glass-like mineral fiber suitable for a multiplicity of industrial uses are essentially conventional; a charge of raw minerals (igneous rock, basalt, slag from a blast furnace or other metal working furnace, phosphate slag, etc.) is melted, then spun and collected to produce a fibrous mineral "blanket". The "blanket" is chopped up, separated, and screened, producing a prilled material constituting a multiplicity of mineral fiber pellets of given average size. These pellets are subjected to brief, rapid acceleration, as by contact with a high-speed toothed rotary wheel, to accelerate and stress the pellets into an industrially usable material constituting a multiplicity of shredded, flake-like mineral fiber elements, at least one such element for each pellet.

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