发明申请
US20130340571A1 DISSOLUTION AND RECOVERY OF AT LEAST ONE ELEMENT NB OR TA AND OF AT LEAST ONE OTHER ELEMENT U OR RARE EARTH ELEMENTS FROM ORES AND CONCENTRATES
审中-公开
至少一个元素的解散和恢复NB或TA和至少一个其他元素或从ORES和浓度的稀土元素
- 专利标题： DISSOLUTION AND RECOVERY OF AT LEAST ONE ELEMENT NB OR TA AND OF AT LEAST ONE OTHER ELEMENT U OR RARE EARTH ELEMENTS FROM ORES AND CONCENTRATES
- 专利标题（中）： 至少一个元素的解散和恢复NB或TA和至少一个其他元素或从ORES和浓度的稀土元素
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申请号： US13978112申请日： 2012-01-06
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公开(公告)号： US20130340571A1公开(公告)日： 2013-12-26
- 发明人: Jerome Agin , Nicolas Durupt , Antoine Greco , Fatima Hammy , Guillaume Laroche , Jacques Thiry
- 申请人： Jerome Agin , Nicolas Durupt , Antoine Greco , Fatima Hammy , Guillaume Laroche , Jacques Thiry
- 申请人地址： FR Paris FR Paris
- 专利权人： ERAMET,AREVA MINES
- 当前专利权人： ERAMET,AREVA MINES
- 当前专利权人地址： FR Paris FR Paris
- 优先权： FR1150089 20110106
- 国际申请： PCT/EP12/50188 WO 20120106
- 主分类号： C22B1/02
- IPC分类号： C22B1/02 ; C22B34/24 ; C22B59/00 ; C22B60/02
摘要：
The main subject-matter of the present invention is a process for the dissolution of at least one element chosen from niobium and tantalum and at least one other element chosen from uranium and the rare earth elements, advantageously for the dissolution of niobium, tantalum, uranium and rare earth elements, present in an ore or an ore concentrate. Said process comprises: the roasting of a material, comprising said elements, which material is mixed, dry or/in the presence of water, with an acid roasting agent in order to obtain a calcine; said material consisting of said ore or concentrate or having been obtained from said ore or said concentrate and said acid roasting agent providing for roasting in a sulphate medium; and the dissolution in an aqueous solution of the calcine obtained in order to obtain a slurry, the liquid fraction of which includes iron, in the ferric state, at a concentration of at least 50 g/l, advantageously of at least 70 g/l and very advantageously of at least 120 g/l.
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