Production of low carbon footprint magnesia
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United States of America Patent
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Aug 2, 2022
Grant Date -
Sep 5, 2019
app pub date -
Jul 20, 2017
filing date -
Jul 27, 2016
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Abstract
A process for producing magnesia can include contacting CO2-containing emissions with a magnesium-containing material to produce magnesium carbonate; subjecting the magnesium carbonate to calcination to produce a CO2 by-product and magnesia; and recycling at least a portion of the CO2 by-product for contacting the magnesium-containing material to produce the magnesium carbonate. The magnesium-containing material can include mining residues, such as phyllosilicate or chrysotile mining residue, and the magnesium carbonate produced can include precipitated nesquehonite that is subjected to calcination to produce the magnesia.
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