Method for producing aqueous zirconium chloride solution
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United States of America Patent
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Jun 13, 2017
Grant Date -
Nov 10, 2016
app pub date -
Dec 17, 2014
filing date -
Jan 16, 2014
priority date (Note) -
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Abstract
A method for producing an aqueous zirconium chloride solution includes: grinding zircon sand to an average particle diameter of 10 μm or less; adding a sodium compound to the ground zircon sand to thereby obtain a mixture; firing the mixture in an iron container at 400° C. or less to thereby obtain a decomposed product; firing the decomposed product in a stainless-steel container at 400 to 1,100° C. to thereby obtain a fired product; dispersing the fired product in water to prepare a dispersion, and washing the fired product with water while adjusting the temperature of the dispersion to 70° C. or less, thereby obtaining a water-washed cake; washing the water-washed cake with hydrochloric acid with a pH of 1 to 6 to thereby obtain zirconium hydrate; and dissolving the zirconium hydrate in hydrochloric acid, and then removing insoluble components to thereby obtain a salt solution.
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