发明授权
- 专利标题: Method for separation and recovery of noble metals
- 专利标题(中): 贵金属分离回收方法
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申请号: US12160852申请日: 2007-01-12
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公开(公告)号: US07857888B2公开(公告)日: 2010-12-28
- 发明人: Kazuhiro Niisawa , Kazuo Shimizu , Tadashi Nozaki
- 申请人: Kazuhiro Niisawa , Kazuo Shimizu , Tadashi Nozaki
- 申请人地址: JP Fukushima JP Tokyo
- 专利权人: Asaka Riken Co., Ltd.,Kazuhiro Niisawa
- 当前专利权人: Asaka Riken Co., Ltd.,Kazuhiro Niisawa
- 当前专利权人地址: JP Fukushima JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: WOPCT/JP2006/300356 20060113
- 国际申请: PCT/JP2007/050318 WO 20070112
- 国际公布: WO2007/080963 WO 20070719
- 主分类号: C22B3/24
- IPC分类号: C22B3/24
摘要:
A method for separation and recovery of noble metals which makes it possible to isolate noble metal components efficiently by easy operation, that is, a method which comprises passing a solution of metals in hydrochloric acid prepared by treating a metal material with hydrochloric acid through the first cellulose column, eluting through development the noble metal component adsorbed on the cellulose with a hydrochloric acid/2-propanone mixture to obtain a fraction containing light platinum-group metals and a fraction containing heavy platinum-group metals and gold, separating the former fraction with the above mixture into fractions containing palladium, ruthenium and rhodium respectively, passing the fraction containing heavy platinum-group metals and gold through the second cellulose column to made them adsorbed on the cellulose, eluting them from the cellulose with a hydrochloric acid/1-butanol mixture to obtain fractions containing gold, osmium, iridium and platinum respectively, and recovering the noble metals from the fractions containing them respectively as simple substances.
公开/授权文献
- US20100224029A1 METHOD FOR SEPARATION AND RECOVERY OF NOBLE METALS 公开/授权日:2010-09-09
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