Invention Grant
- Patent Title: Method of processing non-ferrous smelting intermediates containing arsenic
- Patent Title (中): 加工含砷冶炼中间体的方法
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Application No.: US12452686Application Date: 2008-07-11
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Publication No.: US08092765B2Publication Date: 2012-01-10
- Inventor: Mitsuo Abumiya , Yusuke Sato , Hironobu Mikami , Masami Oouchi , Tetsuo Fujita , Masayoshi Matsumoto
- Applicant: Mitsuo Abumiya , Yusuke Sato , Hironobu Mikami , Masami Oouchi , Tetsuo Fujita , Masayoshi Matsumoto
- Applicant Address: JP Tokyo
- Assignee: Dowa Metals and Mining Co., Ltd.
- Current Assignee: Dowa Metals and Mining Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge PLC
- Priority: JP2007-208432 20070809; JP2008-059366 20080310
- International Application: PCT/JP2008/062617 WO 20080711
- International Announcement: WO2009/019955 WO 20090212
- Main IPC: C01G28/00
- IPC: C01G28/00
Abstract:
To extract arsenic from intermediates containing arsenic, to outside the system in stable form. A method of processing non-ferrous smelting intermediate containing arsenic in sulfide form and a non-ferrous smelting intermediate containing arsenic and copper as metal; a solution adjusting step of adding an oxidation agent to the leaching solution to oxidize trivalent arsenic to pentavalent arsenic and obtain an adjusting solution; and a crystallization step of converting arsenic in the adjusted solution to scorodite crystals.
Public/Granted literature
- US20100196231A1 Method Of Processing Non-Ferrous Smelting Intermediates Containing Arsenic Public/Granted day:2010-08-05
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