CPC C04B 2/10 (2013.01) [C01F 7/56 (2013.01); C04B 11/005 (2013.01); C04B 11/30 (2013.01); C04B 22/064 (2013.01); C04B 28/04 (2013.01); C04B 40/0046 (2013.01); C01G 49/14 (2013.01); C07C 1/328 (2013.01)] | 28 Claims |
1. A method comprising:
first reacting a calcium-bearing starting material with a first acid to produce a first aqueous fraction comprising an aqueous first calcium salt and a first solid fraction comprising one or more solid byproducts; wherein:
the calcium-bearing starting material has a chemical composition comprising a plurality of metal elements including at least Ca and Si;
the one or more solid byproducts comprises a silicon compound;
separating the first aqueous fraction from the first solid fraction; and
treating the first calcium salt to produce a first cement material.
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