| abstract |
PROBLEM TO BE SOLVED: To provide an elution reducing material having an excellent elution suppressing action for heavy metals and the like and to provide a method for producing an elution reducing material having an excellent elution suppressing action for heavy metals and the like. A mineral containing magnesium carbonate as a main component is lightly burned, has a BET specific surface area of 5 to 10 m 2 / g, and a peak radius of pore diameter distribution within a range of 10 to 20 nm. By the elution reducing material characterized by containing a product and water-soluble sulfate. In addition, the mineral containing magnesium carbonate as a main component is calcined under the condition of 650 to 1000 ° C., and when the weight reduction rate due to the calcining becomes 9 to 20%, the calcining is finished to obtain a light calcined product. According to the method for producing an elution reducing material, the elution reducing material is prepared by adding the lightly burned product and a water-soluble sulfate. [Selection] Figure 1 |