METHOD FOR PRODUCING INDIUM OXIDE POWDER, METHOD FOR PRODUCING GRANULATED INDIUM METAL, AND METHOD FOR PRODUCING INDIUM SALT SOLUTION

摘要

Disclosed is a method for easily producing an indium oxide powder, which comprises a step wherein molten indium metal is dropped into water of not more than 70˚C, thereby being processed into a granulated indium metal having a size easily dissolved into an acid, a step wherein an indium salt solution is obtained by dissolving the granulated indium metal into an acid such as nitric acid, and a step wherein an indium oxide powder is obtained by neutralizing the indium salt solution with an aqueous alkaline solution or the like for precipitating indium hydroxide, and then firing the precipitated indium hydroxide.