CPC C01B 3/061 (2013.01) [C01B 3/04 (2013.01); C01F 5/24 (2013.01); C01G 49/08 (2013.01); C22B 1/00 (2013.01); C22B 23/005 (2013.01); C22B 23/0415 (2013.01); C22B 26/12 (2013.01); C22B 34/32 (2013.01); C22B 59/00 (2013.01); C01B 2203/0272 (2013.01); C01B 2203/06 (2013.01); C01B 2203/1258 (2013.01); C01B 2203/86 (2013.01)] | 20 Claims |
1. A method for sequestering carbon and generating hydrogen and magnetite from rock, the method comprising:
obtaining an ore containing olivine or pyroxene;
introducing the ore into a reactor that is operable at temperatures above ambient temperature and pressures above atmospheric pressure;
introducing carbon dioxide into the reactor at a first temperature for a first residence time to react with the ore to generate magnesium carbonate;
introducing water into the reactor at a second temperature for a second residence time to react with the ore to generate magnetite and hydrogen gas;
removing the hydrogen gas from the reactor; and
removing any remaining ore from the reactor.
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