Process for dephosphorization and denitrification of chromium-co

Details Process for dephosphorization and denitrification of chromium-co Process for dephosphorization and denitrification of chromium-co

1980-06-13

1981-09-22

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 53, 75257, C21C 702, C22B 910

Patent

active

042908035

ABSTRACT:
A process for dephosphorization-denitrification of Cr-containing pig iron by oxidizing refining is disclosed. Said process comprises maintaining the Si content of the molten iron at not more than 0.2%, contacting it with a slag comprising at least one of fluorides and chlorides of alkaline earth metals, at least one of lithium oxide and carbonate, and at least one of oxides of iron and nickel, while controlling oxidation of Cr.

REFERENCES:
patent: 2333741 (1943-11-01), Reeder
patent: 2504802 (1950-04-01), Christ
patent: 3172756 (1965-03-01), Bengtsson
patent: 3179540 (1965-04-01), Asinovskaja

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