Methods for removal of impurities from limestone and calcium oxide during the production of hydrated lime

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United States of America Patent

PATENT NO 11772980
APP PUB NO 20220371907A1
SERIAL NO

17879977

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Abstract

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Systems and methods for impurity removal to limestone using modifications to the typical calcination process of turning calcium carbonate into calcium oxide prior to slaking to produce calcium hydroxide. Specifically, substantially increasing the temperature to 1100° C. or higher and increasing soak time can result in reductions in certain undesirable impurities, particularly with regards to lead and lead compounds.

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Patent Owner(s)

Patent OwnerAddress
MISSISSIPPI LIME COMPANY3870 SOUTH LINDBERGH BOULEVARD SUITE 200 ST LOUIS MO 63127-1308

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gran, Martin L Chesterfield, US 13 14
Grass, Mary Ste. Genevieve, US 2 1
Griffard, Randy St. Mary, US 15 28

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