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Patent Searching and Data


Title:
スラグフューミング方法
Document Type and Number:
Japanese Patent JP4525453
Kind Code:
B2
Abstract:

To provide a slag-fuming method which produces dust containing zinc and lead with little amount of arsenic and antimony, and a slag that stably satisfies standards for a soil environment, from a slag produced in a smelting furnace for smelting zinc and/or lead.

This slag-fuming method comprises the steps of: temporarily transferring the slag to a holding furnace; adding a copper source into the holding furnace and holding the slag under the coexistence of copper; subsequently fuming the slag by any one of the following methods (a) to (c): (a) transferring the slag and the copper alloy produced in the holding furnace to a fuming furnace, and fuming the slag under the coexistence of copper; (b) transferring only the slag produced in the holding furnace to the fuming furnace, adding a new copper source and fuming the slag under the coexistence of copper; and (c) transferring the slag produced in the holding furnace to the fuming furnace and fuming the slag; and then transferring the slag to a settling furnace to sediment the copper alloy suspending in the slag.

COPYRIGHT: (C)2007,JPO&INPIT


Inventors:
Junichi Takahashi
Keiji Fujita
Toshiro Tan
Application Number:
JP2005129876A
Publication Date:
August 18, 2010
Filing Date:
April 27, 2005
Export Citation:
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Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B7/04; B09B3/00; C04B5/00; C22B5/16; C22B13/02; C22B19/04; C22B19/30
Domestic Patent References:
JP63192828A
JP52153801A
JP57002887A
JP11269567A
Attorney, Agent or Firm:
Kenji Kawabi