Integrated process for mineral carbonation

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United States of America Patent

PATENT NO 11697597
APP PUB NO 20210047197A1
SERIAL NO

16965804

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Abstract

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The present invention describes an integrated process for carbon dioxide capture, sequestration and utilisation, which comprises: a) providing an aqueous slurry comprising an aqueous solution and a particulate solid comprising an activated magnesium silicate mineral; b) in a dissolution stage, contacting a CO2-containing gas stream with the aqueous slurry to dissolve magnesium from the mineral to provide a magnesium ion enriched aqueous solution and a magnesium depleted solid residue; c) recovering at least a portion of the magnesium depleted solid residue; d) in a separate acid treatment stage, reacting the recovered portion of the magnesium depleted solid residue with a solution comprising a mineral acid or acid salt to further dissolve magnesium and other metals and to provide an acid-treated solid residue; e) recovering the acid-treated solid residue; and f) in a separate precipitation stage, precipitating magnesium carbonate from the magnesium ion enriched aqueous solution.

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Patent Owner(s)

Patent OwnerAddress
MINERAL CARBONATION INTERNATIONAL PTY LTDBRADDON ACT 2612

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Benhelal, Emad Wallsend, AU 3 0
Brent, Geoffrey Frederick Valentine, AU 14 85
Kennedy, Eric Miles Newcastle, AU 10 7
Rayson, Mark Stuart Bar Beach, AU 7 34
Stockenhuber, Michael Bolwarra Heights, AU 7 2

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