Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1990-07-19
1991-07-16
Andrews, Melvyn J.
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75672, 266230, 266237, 266240, 266228, C22B 916, C22B 9187
Patent
active
050321773
ABSTRACT:
By means of an electromagnetic stirrer there is produced in the melt within the melt chamber of the melting furnace a turbulent flow or pair of turbulent flows working in opposite directions and each having a substantially vertical turbulent flow axis. By means of this turbulent flow the upwardly floating slag is forced towards the outermost turbulent flow lines or regions and into an auxiliary chamber formed between a slag barricade and the furnace door. The melt can flow back from the auxiliary chamber into the melt chamber. The slag collected in the auxiliary chamber can be removed in predeterminate time intervals from the auxiliary chamber by means of a slag removal sliding or pusher element and disposed in an environmentally protective fashion in a slag container moved into position at the opened furnace door. The slag collected in the auxiliary chamber, upon opening of the furnace door, can be lifted upon a slag palette or platform with the aid of lifting or buoyant bodies above the lower edge of the furnace door opening.
REFERENCES:
patent: 4415144 (1983-11-01), Klotz et al.
patent: 4460166 (1984-07-01), Ritchie et al.
Engelberg Franz
Jochem Hans-Otto
Andrews Melvyn J.
Gautschi Electro-Fours SA
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