Iron as a co-additive in refining crude lead bullion

Details Iron as a co-additive in refining crude lead bullion Iron as a co-additive in refining crude lead bullion

1992-02-13

1993-06-29

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C22B 1300

Patent

active

052230210

ABSTRACT:
A process for using iron metal or an iron-containing sulfide reagent as a co-additive to extend the usefulness of sodium in refining crude lead bullion.

REFERENCES:
patent: 2110445 (1938-03-01), Lefferrer
patent: 2765328 (1956-10-01), Padgitt
patent: 4033761 (1977-07-01), Di Martini et al.
patent: 4153451 (1979-05-01), Crasto et al.
patent: 4333763 (1982-06-01), Di Martini et al.
patent: 4404026 (1983-09-01), Di Martini et al.
patent: 5100466 (1992-03-01), Blenk
"Sodium Treatment of Copper Dross", C. Bates and C. Di Martini Journal of Metals, Aug. 1986, pp. 43-45.
"Process for Separating Impurities from Crude Lead Bullion Via Sodium Metal Injection," M. B. Blenk, R. B. Diemer and J. P. Hager, International Symposium on Injection in Process Metallurgy, Feb. 21, 1991.

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