发明授权
- 专利标题： Method for removing arsenic and antimony from copper ore concentrates
- 专利标题（中）： 从铜精矿中去除砷和锑的方法
-
申请号： US29044272申请日： 1972-09-20
-
公开(公告)号： US3911078A公开(公告)日： 1975-10-07
- 发明人: NADKARNI RAVINDRA M , KUSIK CHARLES L , MEISSNER HERMAN P
- 申请人： LITTLE INC A
- 专利权人： Little Inc A
- 当前专利权人： Little Inc A
- 优先权： US29044272 1972-09-20
- 主分类号： C01G28/00
- IPC分类号： C01G28/00 ; C22B1/11 ; C01B27/00 ; C01B29/00 ; C01G29/00 ; C22B31/00 ; C22B33/00 ; C22B37/00
摘要：
Method for removing essentially all of the chemically bonded arsenic and antimony from copper sulfide ores. The arsenic and antimony are selectively leached out using Na2S in a basic solution. The resulting Na3AsS4 and Na3SbS4 are converted to the sulfides or to ferric arsenate and ferric antimonate for safe disposal. Sodium and sulfur values are recovered for recycling in the process.