Imerys Pigments, Inc.

Imerys USA, Inc.

David Taylor

Christopher Paynter

Douglas Wicks

David H Anstine

Graham M Pring

Kalena Stovall

Nigel Victor Jarvis

Ricardo M Perez

Gavin Butler-Lee

Yash Khanna

Parvin Golbayani

A process for treating a sulfurous fluid to form gypsum and magnesium carbonate, whereby the sulfurous fluid is scrubbed with a sequestrating agent to yield a scrubbed fluid, gypsum and magnesium sulfate. The flue gas desulfurized gypsum is isolated from the magnesium sulfate solution by filtration or centrifugation. The magnesium sulfate is reacted with a carbonate salt to produce a magnesium carbonate whereby the reaction conditions are controlled to control the properties of the magnesium carbonate produced.

Process for treating a sulfurous fluid to form gypsum and magnesium carbonate

A method for treating calcium carbonate includes combining calcium carbonate with an amount of stearic acid and an amount of water to form a mixture, the amount of water being at least about 0.1% by weight relative to the total weight. The method further includes blending the mixture to form a stearic acid-treated calcium carbonate composition.

Stearic acid-treated calcium carbonate compositions having low or no detectable free stearic acid and related methods

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Marietta, GA, United States of America

David Taylor