Processes for treating red mud
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United States of America Patent
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May 5, 2015
Grant Date -
Dec 18, 2014
app pub date -
Jan 10, 2013
filing date -
Jan 10, 2012
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Abstract
There are provided processes for treating red mud. For example, the processes can comprise leaching red mud with HCl so as to obtain a leachate comprising ions of a first metal (for example aluminum) and a solid, and separating said solid from said leachate. Several other metals can be extracted from the leachate (Fe, Ni, Co, Mg, rare earth elements, rare metals, etc.). Various other components can be extracted from solid such as TiO2, SiO2 etc.
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