Solid waste treatment in reduction of iron ore

Details Solid waste treatment in reduction of iron ore Solid waste treatment in reduction of iron ore

1982-06-14

1983-11-15

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 24, 75 36, C21B 1308

Patent

active

044153570

ABSTRACT:
In the direct reduction of iron ore wherein a solid mixture of unused carbonaceous reductant and spent flux is roasted to convert calcium sulfide to sulfate, the solids recovered from the roasting are carbonated to further reduce the sulfide content, and convert calcium oxide to the carbonate to provide a stabilized solid waste for disposal.

REFERENCES:
patent: 3758292 (1973-09-01), Kuntz et al.
patent: 3856495 (1974-12-01), Foxton

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