| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of separating and recovering chlorine content contained in red mud selectively, massively, inexpensively and efficiently without using chemicals or a specific reaction. SOLUTION: The red mud is classified to selectively separate a sodalite component containing chlorine content. The red mud is classified, then the sodalite component containing chlorine content is selectively separated to recover the red mud reduced in the chlorine content, thereby using the resulting as a cement raw material composition or the like. COPYRIGHT: (C)2005,JPO&NCIPI
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