Methods and systems for reducing chromium containing raw material
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United States of America Patent
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Jan 3, 2017
Grant Date -
Sep 11, 2014
app pub date -
Mar 6, 2014
filing date -
Mar 6, 2013
priority date (Note) -
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Abstract
A method for reducing a chromium containing material, comprising: combining the chromium containing material comprising chromium oxide with a carbonaceous reductant to form a chromium containing mixture; delivering the chromium containing mixture to a moving hearth furnace and reducing the chromium containing mixture to form a reduced chromium containing mixture; delivering the reduced chromium containing mixture to a smelting furnace; and separating the reduced chromium containing mixture into chromium metal and slag. The method also comprises agglomerating the chromium containing mixture in a granulator or the like. The chromium containing mixture has an average particle size of less than about 200 mesh (about 75 μm).
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