Process to make calcium oxide or ordinary Portland cement from calcium bearing rocks and minerals

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11718558
APP PUB NO 20220411328A1
SERIAL NO

17894621

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Abstract

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Aspects of the invention include a method of producing a cement material comprising step of: first reacting a calcium-bearing starting material with a first acid to produce an aqueous first calcium salt; second reacting the aqueous first calcium salt with a second acid to produce a solid second calcium salt; wherein the second acid is different from the first acid and the second calcium salt is different from the first calcium salt; and thermally treating the second calcium salt to produce a first cement material. Preferably, but not necessarily, during the second reacting step, reaction between the first calcium salt and the second acid regenerates the first acid.

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Patent Owner(s)

Patent OwnerAddress
CALIFORNIA INSTITUTE OF TECHNOLOGY1200 E CALIFORNIA BOULEVARD M/C 6-32 PASADENA CA 91125

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Finke, Cody E Pasadena, US 9 21
Leandri, Hugo F Pasadena, US 4 7

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