发明授权
- 专利标题： Anti-oxidation method for sulfide minerals in sulfide ore
- 专利标题（中）： 硫化矿中硫化矿物质的抗氧化方法
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申请号： US11106351申请日： 2005-04-14
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公开(公告)号： US07435405B2公开(公告)日： 2008-10-14
- 发明人: Yoshiyuki Tanaka , Ryoichi Nakayama , Hideyuki Okamoto , Masaki Imamura
- 申请人： Yoshiyuki Tanaka , Ryoichi Nakayama , Hideyuki Okamoto , Masaki Imamura
- 申请人地址： JP Tokyo
- 专利权人： Sumitomo Metal Mining Co., Ltd.
- 当前专利权人： Sumitomo Metal Mining Co., Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Katten Muchin Rosenman LLP
- 优先权： JP2003-076452 20030319
- 主分类号： B01F1/00
- IPC分类号： B01F1/00
摘要：
By suppressing oxidation of sulfide minerals in sulfide ore due to bacteria or the like, this invention prevents the elution of heavy metals from the sulfide ore, and reduces the decrease in flotation performance when processing sulfide ore that is stored in a stockpile. Also, the invention makes it easier to process acidic wastewater from a stockpile or tailings dumpsite.In order to accomplish this, oxidation of sulfide minerals in sulfide ore is suppressed by adding an antioxidant, which contains plant polyphenol and whose main component is an organic acid that contains a carboxyl group, to the sulfide ore stored in a stockpile or tailings dumpsite.