DIRECT PROCESSING OF METALLIC ORE CONCENTRATES INTO FERROALLOYS
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United States of America Patent
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Issued Date -
May 27, 2010
app pub date -
Aug 12, 2008
filing date -
Sep 4, 2007
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Abandoned
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Abstract
A method for producing liquid ferroalloy by direct processing of manganese and chromium bearing iron compounds, by the steps: of mixing carbonaceous reductant, fluxing agent, and a binder with materials such as iron sands, metallic oxides, manganese-iron ore concentrates and/or chromium-iron ore concentrates and silica sands, to form a mixture; forming agglomerates from the mixture; feeding the agglomerates to a melting furnace with other materials; melting the feed materials at a temperature of from 1500 to 1760 C and forming a slag and hot metal; removing the slag; and tapping the hot metal as liquid ferroalloy.
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