Carbon Dioxide → Magnesium bicarbonate

The calcium oxide powder is digested by water at liquid to solid ratio of 2.5:1 (calculated by the weight of water and calcium oxide) for 60 mins at 80° C. to get calcium hydroxide slurry, and then brine is added by Ca/Mg molar ratio of 1.2:1 for a 60 minutes reaction at 25° C. to get magnesium hydroxide slurry which is then filtered to get magnesium hydroxide cake. The magnesium hydroxide cake is mixed with water at liquid to solid ratio of 50:1 (calculated by the weight of water and magnesia), and then carbon dioxide gas is introduced into it to carbonize continuously at 20° C. Aqueous solution of magnesium bicarbonate (MgO: 18.6 g/L, Fe: 1.7 ppm, Al: 0.3 ppm) is obtained after filtration.

1. additionis introduced into it
2. customto carbonize continuously at 20° C

ORDレコード

ord-b7444e0b825842978a037ed156d36983

出典データセット

uspto-grants-2014_05

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08721998B2