Title:
METHOD FOR MELTING TREATMENT OF BURNED ASH
Document Type and Number:
Japanese Patent JP2002130645
Kind Code:
A
Abstract:
To provide a method for melting treatment of burned ash which enables life extension of lining refractories of a melting treatment furnace and quality improvement of obtained slag as well as conventional level volume reduction and detoxification.
In the method for melting treatment of burned ash, a reactor vessel which is lined with alumina base and/or magnesia base refractories is charged with burned ash for melting, followed by separation into molten metal, slag and heavy metal dusts and recovery. Before being charged into the reactor vessel or during melting, the burned ash is added with CaO contained materials so that the degree of basicity (CaO/SiO2) of ultimately formed molten slag falls within the range of 1.2-2.5.
Inventors:
SUZUKI HAJIME
YAMADA SUMIO
KATO YOSHIHIDE
YAMADA SUMIO
KATO YOSHIHIDE
Application Number:
JP2000326329A
Publication Date:
May 09, 2002
Filing Date:
October 26, 2000
Export Citation:
Assignee:
KAWASAKI STEEL CO
International Classes:
B09B3/00; C21C5/36; C21C5/52; C22B7/02; C22B9/10; F23J1/00; (IPC1-7): F23J1/00; B09B3/00; C21C5/36; C21C5/52; C22B7/02; C22B9/10
Attorney, Agent or Firm:
Yoshio Kosugi (1 person outside)