Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1986-12-16
1988-08-16
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 53, C21C 702
Patent
active
047642114
ABSTRACT:
A fine-grained agent for desulfurizing molten iron comprising industrial calcium carbide, dried coal which contains at least 15% by weight of volatile constituents and which, immediately after being passed into the molten iron, releases at least 80 standard liters of gas per kg of coal, and optionally contains fine-grained magnesium. The coals used are lignites, flame coal, gas-flame coal, gas coal or coking coal. The agent is prepared by addition of the dried coal to the calcium carbide, if appropriate, pre-crushed, and common comminuted to a grain size of 90% <200 .mu.m. The fine-grained magnesium is present in the agent either in uniform distribution, or it is stored and fluidized separately from the carbide/coal mixture and added to the carbide/coal mixture in the transport line or in the lance, if appropriate, with variation during injection.
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Gmohling Werner
Meichsner Walter
Peters Karl-Heinz
Tutte Manfred
Rosenberg Peter D.
SKW Trostberg AG
Thyssen Stahl AG
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