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US 4,540,434 AGranted
Process and device for feeding metal into a molten metal bath
AssigneeSwiss Aluminium Ltd.
InventorRolf Roggen
Life of this patent
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AssigneeSwiss Aluminium Ltd.
InventorRolf Roggen
Estimating the term…
A process for feeding metal to molten metal, in particular for the purpose of melting solid metal such as scrap metal or dross granules, is such that at least part of the melt is divided and each divided part set into motion rotating in opposite directions so that at least two rotating streams or "rolls" of molten metal are produced. The central axes of these rotating streams of molten metal form an angle. The metal to be melted is charged at the place where the two "rolls" of molten metal meet. The "rolls" of molten metal are produced by introducing the molten metal into a pair of pipe lengths approximately perpendicular to their central axes and approximately tangential to the cross section of the said pipe lengths, the central axes forming an angle, or by causing the molten metal in the pipe lengths to rotate by means of electrodynamic forces.
A process for feeding metal to be melted to a stream of molten metal comprising providing a source of molten metal, providing a source of metal to be melted, dividing said molten metal into a first stream of metal rotating in a clockwise direction and a second stream of metal rotating in a counterclockwise direction, joining said first stream and said second stream so as to form a furrow in the region where the counter-rotating streams meet and feeding said metal to be melted to said furrow wherein said metal is sucked down by said counter-rotating streams.
Dependencies are inferred from the claim text.