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1.发明公开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 有权解散并回收的至少一种元素（Nb或Ta）和至少一种其它元素（U），或从矿石稀土金属
公开(公告)号：EP2661513A1
公开(公告)日：2013-11-13
申请号：EP12700383.8
申请日：2012-01-06
申请人： Areva Mines , Eramet
发明人： AGIN, Jérôme , DURUPT, Nicolas , GRECO, Antoine , HAMMY, Fatima , LAROCHE, Guillaume , THIRY, Jacques
CPC分类号： C22B1/02 , C22B1/06 , C22B3/08 , C22B34/24 , C22B59/00 , C22B60/02 , C22B60/0204 , C22B60/0208 , Y02P10/216 , Y02P10/234
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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2.发明授权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 有权解散并回收的至少一种元素（Nb或Ta）和至少一种其它元素（U），或从矿石稀土金属
公开(公告)号：EP2661513B1
公开(公告)日：2015-03-25
申请号：EP12700383.8
申请日：2012-01-06
申请人： Areva Mines , Eramet
发明人： AGIN, Jérôme , DURUPT, Nicolas , GRECO, Antoine , HAMMY, Fatima , LAROCHE, Guillaume , THIRY, Jacques
CPC分类号： C22B1/02 , C22B1/06 , C22B3/08 , C22B34/24 , C22B59/00 , C22B60/02 , C22B60/0204 , C22B60/0208 , Y02P10/216 , Y02P10/234
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