Methods for removal of lead and/or other contaminants from limestone and resultant calcium oxide

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United States of America Patent

PATENT NO 11420878
APP PUB NO 20200262710A1
SERIAL NO

16795306

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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. 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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