Title:
PROCESSING METHOD FOR MAKING TO SPHERE SEWAGE SLUDGE INCINERATION ASH CONTAINING ARSENIC
Document Type and Number:
Japanese Patent JP2000240928
Kind Code:
A
Abstract:
To provide a processing method for making to a sphere a sewage sludge incineration ash wherein spherical powder slug of an elution amount of 0.01 mg/l or less is easily obtained from sewage sludge incineration ash containing arsenic of an elution amount of 0.1 mg/l or more.
After slaked lime is added to and mixed with sewage sludge incineration ash containing arsenic of an elution amount of 0.1 mg/l or more by 1 to 5 wt.%, the mixture is injected from a burner 7 disposed in a melting furnace 4 together with a part of combustion air, and the injected mixture is melted in a floating state with a combustion flame of the burner 7 and then cooled in the floating state into a spherical powder slag.
Inventors:
TERATANI TOSHIAKI
SHINJO NARIAKI
SHIMIZU YOJI
KONO KINICHIRO
SHINJO NARIAKI
SHIMIZU YOJI
KONO KINICHIRO
Application Number:
JP4485099A
Publication Date:
September 08, 2000
Filing Date:
February 23, 1999
Export Citation:
Assignee:
CHUGAI RO KOGYO KAISHA LTD
SHIMIZU YOJI
SHIMIZU YOJI
International Classes:
C01G28/02; F23J1/00; B09B3/00; (IPC1-7): F23J1/00; B09B3/00; C01G28/02
Attorney, Agent or Firm:
Kaoru Aoyama (4 people outside)
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