| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for easily producing high purity magnesium carbonate, in particular magnesium carbonate having a low iron content from low grade magnesium hydroxide. Ž<P>SOLUTION: The method for producing high purity magnesium carbonate includes: blowing an oxygen-containing gas together with carbon dioxide gas into a suspension of low-grade magnesium hydroxide to form a solution containing magnesium bicarbonate; performing solid-liquid separation after the formation; and forming and precipitating magnesium carbonate by heating the obtained liquid. By this production method, high purity magnesium carbonate, in particular magnesium carbonate having the low iron content can be produced by adopting an extremely simple means comprising simultaneously blowing carbon dioxide gas and an oxygen-containing gas such as air into the suspension of low grade magnesium hydroxide. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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