Title:
スラグ水砕水中の溶解性重金属の低減装置および低減方法
Document Type and Number:
Japanese Patent JP3575958
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce meltable heavy metal in slag granulating water. SOLUTION: A reducer for meltable heavy metal in slag granulating water is constituted of a pH meter 4, a NaOH injection means 5 and a controller 6. In this case, the controller 6 controls a NaOH addition means 5 based on a pH value measured by the pH meter 4 to automatically inject a proper amount of NaOH aqueous solution enough to maintain slag granulating water 3 at a pH of about 9-12. At the pH of about 9-12, heavy metals such as lead in an exhaust gas forms hydroxides to be converted to a suspended solid when absorbed by the slag granulating water 3.
Inventors:
Seiichi Abe
Shiro Uebayashi
Masaharu Okada
Tetsuo Kiyota
Shiro Uebayashi
Masaharu Okada
Tetsuo Kiyota
Application Number:
JP20700397A
Publication Date:
October 13, 2004
Filing Date:
August 01, 1997
Export Citation:
Assignee:
Kubota Corporation
International Classes:
C04B5/02; F27D15/02; B09B3/00; (IPC1-7): F27D15/02; B09B3/00; C04B5/02
Domestic Patent References:
| JP9301748A |
Attorney, Agent or Firm:
Yoshihiro Morimoto