Method of expanding metallurgical slag

Details Method of expanding metallurgical slag Method of expanding metallurgical slag

1978-05-15

1979-12-18

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

Slag, utilization

65 19, 65141, C03B 1908

Patent

active

041792750

ABSTRACT:
Molten metallurgical slags are expanded by contact with water in a liquid or vapor state by passing the molten slag along a prefoaming or expanding trough by delivering the slag to this trough via an intermediate trough which is shiftable along the prefoaming trough in order to vary the location at which the slag contacts the prefoaming trough and the expanding-agent film thereon in accordance with physical characteristics of the molten slag, especially its temperature and viscosity. From the pre-expanding or prefoaming trough, the partially expanded slag may be subjected to expansion by conventional means, e.g. a rotating drum which disperses the slag particles through the air so that they can be collected in a completely expanded, dry and solidified state.

REFERENCES:
patent: 2212962 (1940-08-01), Stuart et al.
patent: 3594142 (1971-07-01), Margesson et al.

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