PROCESSING METHOD FOR COMBUSTION ASH

摘要

PROBLEM TO BE SOLVED: To provide a method for treating the paper sludge combustion ash containing harmful substances effectively and conveniently.SOLUTION: Combustion ash is treated to attain a product by adding 0.01 to 2 pts.wt. of sulfite salt to 100 pts.wt. of combustion ash containing paper sludge combustion ash having a particle size adjusted within 10 to 300 μm. This product is suppressed in the elution of noxious components so that the product can be effective in applications of an absorber, a soil improvement material, a roadbed material, a forest work and a road improvement material, and the like.