Process for the production of nickel alloys

Details Process for the production of nickel alloys Process for the production of nickel alloys

1978-09-20

1980-04-29

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 60, 75 82, 75129, C21C 534

Patent

active

042004535

ABSTRACT:
The process for production of a nickel alloy having a maximum sulphur content of 0.05% in a converter by treatment of a crude ferro-nickel melt having a sulphur content of about 0.10% to 0.50% with oxygen and lime to form a slag and removal of the slag is improved by introducing at least a part of the required amount of lime as lime powder, together with oxygen, by injection tuyeres under the surface of the melt using tuyeres consisting of concentric pipes wherein the oxygen is surrounded by hydrocarbons. This improvement reduces to a maximum of two, the slag changes required to reduce the sulfur content to 0.05% or lower.

REFERENCES:
patent: 3771998 (1973-11-01), Knuppel
patent: 3909245 (1975-09-01), Brotzmann

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