Invention Grant
- Patent Title: Method for recycling metals from waste tungsten catalysts
- Patent Title (中): 从废钨催化剂中回收金属的方法
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Application No.: US13167377Application Date: 2011-06-23
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Publication No.: US08574341B2Publication Date: 2013-11-05
- Inventor: Yu-Lung Sun , Ming-Zhe Tsai , Yung-Hao Liu
- Applicant: Yu-Lung Sun , Ming-Zhe Tsai , Yung-Hao Liu
- Applicant Address: TW Kaohsiung
- Assignee: Hong Jing Metal Corporation
- Current Assignee: Hong Jing Metal Corporation
- Current Assignee Address: TW Kaohsiung
- Agency: Muncy, Geissler, Olds & Lowe, PLLC
- Priority: TW100115996A 20110506
- Main IPC: C22B3/06
- IPC: C22B3/06 ; C22B3/10

Abstract:
A method for recycling metals from waste tungsten catalysts comprises steps of: leaching, by soaking a waste tungsten catalysts into a highly oxidized acid and conducting a reaction between sulfur of the waste tungsten catalysts and the acid to obtain sulfide and oxidized acidic groups, wherein metals in the waste tungsten catalysts are dissolved and oxidized by the acid to obtain a first solution and dregs; and refining, by extracting metals of the waste tungsten catalysts from the first solution; wherein, the oxidized acidic groups obtained from the step of leaching is converted into highly oxidized acid, which is capable of being recycled.
Public/Granted literature
- US20120279355A1 METHOD FOR RECYCLING METALS FROM WASTE TUNGSTEN CATALYSTS Public/Granted day:2012-11-08
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