Method of reduction treatment of metal oxides or steelmaking waste and method of concentrating and recovering zinc and/or lead
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United States of America Patent
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Nov 13, 2012
Grant Date -
May 19, 2011
app pub date -
Jan 19, 2011
filing date -
Sep 13, 2002
priority date (Note) -
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Abstract
A method of reduction treatment of metal oxides characterized by using as a material a powder containing metal oxides and containing alkali metals and halogen elements and further, in accordance with need, carbon, mixing the material with water to produce a slurry, then dehydrating this and charging the dehydrated material, mixed with another material in accordance with need, into a rotary hearth type reduction furnace for reduction.
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