Title:
スラグフューミング方法
Document Type and Number:
Japanese Patent JP4470888
Kind Code:
B2
Abstract:
A method of slag fuming wherein a slag containing arsenic or arsenic and antimony together with zinc and lead is heated and reduced in a slag fuming furnace, and zinc and lead are separated by evaporation, characterized in that it comprises causing a copper melt containing copper in an amount being 5 to 100 wt % relative to that of the slag charged in the above furnace and being 100 wt % or more relative to that of the lead contained in the above slag to be co-present in the above slag melt at a temperature of 1075 to 1500˚C, and reacting the copper melt with arsenic or arsenic and antimony contained in the slag, to form a Cu-Fe-Pb-As based uniform melt. The above method of slag fuming and the like can be suitably employed for producing, by the use of a slag generated from a smelting furnace for refining zinc and/or lead, a dust containing zinc and lead and being reduced in the contents of arsenic and antimony, and a slag stably satisfying the environmental standard for soil, at a low treatment cost.
Inventors:
Junichi Takahashi
Keiji Fujita
Toshiro Tan
Keiji Fujita
Toshiro Tan
Application Number:
JP2005517090A
Publication Date:
June 02, 2010
Filing Date:
January 17, 2005
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B7/04; C04B5/00; C22B5/16; C22B7/00; C22B13/02; C22B13/06; C22B19/04; C22B19/28; C22B19/30; C22B19/32
Domestic Patent References:
| JP63192828A | ||||
| JP7216464A | ||||
| JP39028019B1 |
Attorney, Agent or Firm:
Kenji Kawabi