Mineral wool and process for producing same

Details Mineral wool and process for producing same Mineral wool and process for producing same

1982-03-26

1982-12-28

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Forming product or preform from molten glass

65 5, 65134, 110264, 110266, 501 36, C03B 3701

Patent

active

043659845

ABSTRACT:
A process for producing mineral wool having a chemical composition comprised of between about 50 and 70 weight percent silica plus alumina, about 20 and 35 weight percent lime plug magnesia and about 5 and 15 weight percent iron oxides is described.
The process includes feeding a first particulate waste material having a particle size of 100 weight percent -200 mesh and containing organic combustibles having heating values of about 10 mega J per kilogram of slag and inorganic non-combustibles, a second particulate waste material having a particle size of 100 weight percent -200 mesh and containing fluxstone, and preheated air at a velocity of between about 30 meters to 60 meters per second at a temperature of about 500.degree. C. into a high temperature cyclone-like furnace. The combustibles are substantially instantaneously burned and the non-combustibles and the fluxstone are melted and reacted to form a molten slag which can be fiberized into mineral wool.

REFERENCES:
patent: 2193982 (1940-03-01), Ramjemer
patent: 2217808 (1940-10-01), Nye
patent: 2707444 (1955-05-01), Van Loon
patent: 2745557 (1956-05-01), Oster
patent: 2917011 (1959-12-01), Korner
patent: 3131053 (1964-04-01), Grebe et al.
patent: 3642445 (1972-02-01), Muter

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