Lime-based injection powder for steel-refining

Specialized metallurgical processes – compositions for use therei – Processes

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75507, 75528, 75539, 75558, 75560, 75568, 75570, C21C 702, C21C 704

Patent

active

050079581

ABSTRACT:
A lime-based injection powder for use in steel-refining, having excellent waterproofing and desulphurization effects, consists of (a) more than 65% by weight of calcium oxide, (b) less than 30% by weight of fluorite, and 5-10% by weight of Al powder, 5%-7% by weight of the calcium oxide being converted into CaCO3 by reacting the calcium oxide with carbon dioxide in a multi-stage fluidized bed reactor.

REFERENCES:
patent: 4154606 (1979-05-01), Freissmuth et al.
D. R. Glasson, "Reactivity of Lime and Related Oxides, IV, Carbonatation of Lime", J. Appl. Chem., 10, Jan. 1960, pp. 42-48.

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