公开(公告)号：JP2001149891A

公开(公告)日：2001-06-05

申请号：JP2000294587

申请日：2000-09-27

Applicant: ABB SCHWEIZ AG

Inventor： CARCER BRUNO ,  RUEEGG HANS ,  WIECKERT CHRISTIAN DR

IPC: F23J1/00 ,  B09B3/00 ,  C22B5/10 ,  C22B7/00 ,  C22B7/02 ,  C22B7/04 ,  C22B9/02 ,  C22B19/30 ,  F27D15/00 ,  F27D17/00

Abstract: PROBLEM TO BE SOLVED: To provide a method for melting a heavy metal-containing substance 4 by charging the heavy metal-containing substance 4 in a converter or rotary kiln useful as a melting furnace to melt the same by a burner 2 operated by gas containing oxygen in a ratio higher than air or oxygen 6 and fossil fuel 5 not only to form slag 10 but also to generate flue gas 7. SOLUTION: A burner 2 and/or liquid slag 10 is operated more intensively and reductively as Zn is converted to a gaseous phase and the generated gas is allowed to flow out of molten matter and mixed with flue gas to be discharged. When a heavy metal-containing substance 4 additionally contains Cu, the slag is always additionally operated by a liquid Fe regulus 13 in order to reduce Cu in the slag. The content of heavy metals in the slag 10 falls below a limit value required in the slag 10 for disposal treatment.