METHOD FOR INSOLUBILIZATION OF HEAVY METAL IN COAL ASH, AND METHOD FOR MANUFACTURING CONSTRUCTION M

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PROBLEM TO BE SOLVED : To provide a method for insolubilization of a heavy metal which can sufficiently suppress elution of a heavy metal in coal ash and can satisfy wide environment standard, and a method for manufacturing a construction material with use of such a coal ash. SOLUTION : A method for insolubilization of a heavy metal in coal ash characterized in that a ferrous sulfate and a blast furnace cement B kind are added to coal ash, water of a quantity suitable for slurrying is further added to the coal ash and mixing thereof is performed. SELECTED DRAWING : None COPYRIGHT : (C)2016, JPO&INPIT