REMOVAL AND RECOVERY OF MAGNESIUM AND CALCIUM, AND A TYPE ZEOLITE MANUFACTURING METHOD FROM STEEL INDUSTRY BY-PRODUCT

摘要

PROBLEM TO BE SOLVED: To provide a manufacturing method of A type zeolite which adjusts the components of the raw material in order to synthesize A type zeolite using only the industrial by-product such as blast furnace slag and the like, and heats and agitates the same in an alkaline aqueous sloution using a jar mill type reactor to manufacture A type zeolite, and to provide a removal and recovery method of magnesium and calcium from the steel industry by-product which recovers the material generated at the time of adjustment and effects the perfect recycling of the industrial by-product. SOLUTION: Calcium and magnesium are selectively removed by performing the agitation treatment of the industrial by-product such as the blast furnace slag and the like in a formic acid or citric acid aqueous solution using the jar mill type reactor. The industrial by-product is adjusted to form the composition so that the A type zeolite can be manufactured and synthesized. Calcium is recovered as a useful form such as calcium formate. COPYRIGHT: (C)2007,JPO&INPIT