Specialized metallurgical processes – compositions for use therei – Processes – Process control responsive to sensed condition
Patent
1996-05-28
1998-04-21
Andrews, Melvyn
Specialized metallurgical processes, compositions for use therei
Processes
Process control responsive to sensed condition
75412, 75684, 420548, C22B 2106
Patent
active
057413487
ABSTRACT:
A method of refining a melt of aluminum scrap material which comprises metallic aluminum and impurities including iron, in order to obtain a target iron level. The method includes the steps of determining the initial amounts in the melt of Mn, Fe and Si, adding a quantity of Mn to the melt so as to obtain in the melt, after refining of the melt a ratio of Mn in the melt to a desired target level of Fe. Thereafter, the method includes the steps of homogenizing the melt by heating, cooling the melt and maintaining it at a super-eutectic holding temperature so that solid intermetallic compounds form and finally separating the solid intermetallic compounds from the melt.
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Nijhof Gerrit Hein
Van Der Donk Henricus Matheus
Andrews Melvyn
Hoogovens Aluminium BV
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