- METHOD FOR SEPARATELY PREPARING IRON OXIDES AND ALKALINE EARTH METAL CHLORIDE FROM IRON-CONTAINING MIXED METAL CHLORIDE SOLUTION

摘要

The present application relates to a method for manufacturing an iron oxide, comprising steps of: adding, as a precipitation additive, one selected from a group consisting of alkali earth metal carbonates, alkali earth metal oxides, and combinations thereof, to an iron-containing mixed metal chloride aqueous solution to selectively obtain an iron-containing precipitate; and subjecting the obtained iron-containing precipitate to heat treatment to obtain an iron oxide, and to a method for manufacturing an alkali earth metal chloride, comprising: separating an iron-containing precipitate, which is formed by adding, as a precipitation additive, one selected from a group consisting of alkali earth metal carbonates, alkali earth metal oxides, and combinations thereof, to an iron-containing mixed metal chloride aqueous solution; and crystallizing the mixed metal chloride aqueous solution with an iron component removed therefrom, to thus obtain an alkali earth metal chloride.