Specialized metallurgical processes – compositions for use therei – Compositions – Solid treating composition for liquid metal or charge
Patent
1989-04-12
1990-09-11
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Compositions
Solid treating composition for liquid metal or charge
75526, C21C 702
Patent
active
049560107
ABSTRACT:
The method concerns the desulphurization of cast iron produced by a blast furnace, before it is converted to steel.
In a first phase of the process the cast iron is treated with a desulphurizing compound such as Na.sub.2 CO.sub.3. A very long composite product with a tubular skin is then added to the cast iron. The product comprises an axial zone containing magnesium in powdered or granular form, and an annular zone, separated from the axial zone by an intermediate wall and containing a powdered or granular material. An inert gas could then be injected and a clearing operation carried out.
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Affival
Rosenberg Peter D.
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