Process for sequestration of carbon dioxide by mineral carbonation
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United States of America Patent
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May 25, 2010
Grant Date -
Nov 15, 2007
app pub date -
Nov 21, 2006
filing date -
Nov 23, 2005
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Abstract
The invention provides a process for sequestration of carbon dioxide by mineral carbonation comprising the following steps: (a) converting a magnesium or calcium sheet silicate hydroxide into a magnesium or calcium ortho- or chain silicate by bringing the silicate hydroxide in direct or indirect heat-exchange contact with hot synthesis gas to obtain the silicate, silica, water and cooled synthesis gas; (b) contacting the silicate obtained in step (a) with carbon dioxide to convert the silicate into magnesium or calcium carbonate and silica.
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