公开(公告)号：US20130340571A1

公开(公告)日：2013-12-26

申请号：US13978112

申请日：2012-01-06

申请人： Jerome Agin ,  Nicolas Durupt ,  Antoine Greco ,  Fatima Hammy ,  Guillaume Laroche ,  Jacques Thiry

发明人： Jerome Agin ,  Nicolas Durupt ,  Antoine Greco ,  Fatima Hammy ,  Guillaume Laroche ,  Jacques Thiry

IPC分类号： C22B1/02 ,  C22B34/24 ,  C22B59/00 ,  C22B60/02

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.

摘要翻译： 本发明的主要目的是一种溶解选自铌和钽的至少一种元素和选自铀和稀土元素的至少一种其它元素的方法，有利于溶解铌，钽，铀 和稀土元素，以矿石或矿石精矿存在。 所述方法包括：将含有所述元素的材料（该材料混合干燥或/在水存在下）与酸性焙烧剂焙烧以获得煅烧物; 所述材料由所述矿石或浓缩物组成或已经从所述矿石或所述浓缩物获得，所述酸性焙烧剂提供在硫酸盐介质中焙烧; 并且在所得到的煅烧水溶液中溶解以获得浆料，其液体部分包含铁，其铁含量为至少50g / l，有利地为至少70g / l 非常有利地为至少120g / l。