Daiichi Kigenso Kagaku Kogyo Co., Ltd.

Nobutaka Nochioka

Taichi Kunisada

A method for producing an aqueous zirconium chloride solution includes: grinding zircon sand to an average particle diameter of 10 &#x3bc;m 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&#xb0; C. or less to thereby obtain a decomposed product; firing the decomposed product in a stainless-steel container at 400 to 1,100&#xb0; 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&#xb0; 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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Osaka, Japan

Nobutaka Nochioka