| 摘要 |
PROBLEM TO BE SOLVED: To reuse a service water sludge waste material effectively. SOLUTION: A composition of total 100 wt.% is prepared from a burnt material (A) of 50 to 80 wt.%, which is burned a waste material of a sludge (hereinafter, described as service water sludge waste material) at 900-1,300 deg.C wherein the sludge is made by a flocculation sedimentation of a fine particle in water as a water-purifying treatment when a service water is produced, a clay (B) of 20 to 50 wt.% and other stone (C) of 0 to 20 wt.% (based on a weight under the absolute dry condition, the above wt.% is calculated), is made dry forming and after that, is calcined at 1,150-1,300 deg.C. |
