Process for the joint production of sodium carbonate and sodium bicarbonate

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United States of America Patent

PATENT NO 8784756
APP PUB NO 20110250109A1
SERIAL NO

13139430

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Abstract

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A process for the joint production of sodium carbonate and sodium bicarbonate out of trona, comprising: introducing and dissolving crushed trona ore in a leaching tank containing a solution comprising sodium carbonate and sodium bicarbonate, saturated in sodium bicarbonate, in order to produce solid particles suspended in a production solution comprising sodium carbonate, the solid particles containing insoluble impurities and at least 65% in weight of sodium bicarbonate; separating the solid particles from the production solution containing sodium carbonate; drying and valorizing the separated solid particles; taking at least part of the production solution containing sodium carbonate out of the leaching tank in order to constitute a produced solution which is valorized; and introducing water in the leaching tank.

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Patent Owner(s)

Patent OwnerAddress
SOLVAY SA310 RUE DE RANSBEEK BRUSSELS B-1120

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Coustry, Francis M Alsemberg, BE 12 93
Davoine, Perrine Brussels, BE 10 14
Detournay, Jean-Paul Brussels, BE 21 143

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