Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1992-03-04
1993-01-19
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75643, 266173, C21C 534
Patent
active
051804239
ABSTRACT:
The invention provides a converter for purifying molten nonferrous material. A converter body having a refractory lined chamber holds the nonferrous material. A gas injector means pierces a lower portion of the chamber for bottom sparging the nonferrous material. A lance pierces an upper portion of the converter body projecting minimally into the chamber for limited exposure to adverse conditions. While converting with top blowing of gas containing oxygen and bottom stirring solid nonferrous metal may be added to the converter to cool the molten nonferrous material and purified molten nonferrous metal.
REFERENCES:
patent: 4435211 (1984-03-01), Schwartz
patent: 4469513 (1984-09-01), Staib
patent: 4614542 (1986-09-01), Kimura
patent: 4783219 (1988-11-01), Mori
patent: 4830667 (1989-05-01), Marcuson et al.
Diaz et al.-"Conversion of Nickel and Sulfuric-Containing to Blister"-Copper 87, vol. 4-Pyrometallurgy of Copper Apr., 1988, pp. 294-304.
Amson James H.
Davies Haydn
Landolt Carlos A.
Marcuson Samuel W.
Biederman Blake T.
Inco Limited
Rosenberg Peter D.
Steen Edward A.
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