C - Chemistry – Metallurgy – 21 – C
Patent
C - Chemistry, Metallurgy
21
C
53/95
C21C 7/00 (2006.01)
Patent
CA 1092829
ABSTRACT OF THE DISCLOSURE A molten iron is continuously refined in a refining vessel of a closed type using a flux composed chiefly of an alkali metal compound so as to decrease the content of P and S to a low level. The alkali metal compound is recovered from the evaporating material and slag generated in the refining and is again used in the refining, while such valuable elements as P, V, etc. may be recovered. The molten iron thus refined can be converted into a steel of high quality in a known oxygen steel making furnace sub- stantially by means of decarburization only and without the use of any flux or with a slight amount thereof. The practice of this invention makes it possible to substantially obviate a substance to be discarded or rejected in the steel making process.
267834
Matsuo Teruo
Yakoozi Teruo
Yamamoto Satomi
Yoshii Masataka
Marks & Clerk
Nippon Steel Corporation
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