公开(公告)号：US20110212005A1

公开(公告)日：2011-09-01

申请号：US13127942

申请日：2008-11-07

申请人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

发明人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

IPC分类号： C22B60/02 ,  C01G56/00

CPC分类号： C01G43/00 ,  C01G43/01 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/10

摘要： Method for producing a uranium concentrate in the form of solid particles, by precipitation from a uranium-containing solution using a precipitating agent, in a vertical reactor comprising a base, a top, a central part, an upper part, and a lower part, the solid particles of the uranium concentrate forming a fluidized bed under the action of a rising liquid current which circulates from the base towards the top of the reactor successively passing through the lower part, the central part and the upper part of the reactor, and which is created by introducing a liquid recycling current (flow) at the base of the reactor, said liquid recycling current being tapped at a first determined level (A) in the upper part of the reactor and sent back without settling to the base of the reactor, excess liquid being also evacuated via an overflow located at a second determined level (B) in the upper part of the reactor; a method in which the upper limit (C) of the fluidized bed of solid particles is controlled so that it is positioned at a level below the first and second determined levels.

摘要翻译： 在包含基底，顶部，中心部分，上部和下部的立式反应器中，通过使用沉淀剂从含铀溶液中沉淀制备固体颗粒形式的铀浓缩物的方法， 铀浓缩物的固体颗粒在上升液流的作用下形成流化床，其从基体朝向反应器的顶部循环，依次通过反应器的下部，中心部分和上部，并且其中 是通过在反应器的底部引入液体循环电流（流动）而产生的，所述液体循环电流在反应器上部的第一确定水平（A）上被敲击，并在不沉降到反应器的底部 过多的液体也通过位于反应器上部的第二确定水平（B）的溢流抽真空; 控制固体颗粒的流化床的上限（C）使其位于低于第一和第二确定水平的水平的方法。

公开(公告)号：US08628733B2

公开(公告)日：2014-01-14

申请号：US13127942

申请日：2008-11-07

申请人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

发明人： Bruno Courtaud ,  Frederic Auger ,  Jacques Thiry

IPC分类号： C01G43/00

CPC分类号： C01G43/00 ,  C01G43/01 ,  C01P2004/03 ,  C01P2004/61 ,  C01P2006/10

摘要： Method for producing a uranium concentrate in the form of solid particles, by precipitation from a uranium-containing solution using a precipitating agent, in a vertical reactor comprising a base, a top, a central part, an upper part, and a lower part, the solid particles of the uranium concentrate forming a fluidized bed under the action of a rising liquid current which circulates from the base towards the top of the reactor successively passing through the lower part, the central part and the upper part of the reactor, and which is created by introducing a liquid recycling current (flow) at the base of the reactor, said liquid recycling current being tapped at a first determined level (A) in the upper part of the reactor and sent back without settling to the base of the reactor, excess liquid being also evacuated via an overflow located at a second determined level (B) in the upper part of the reactor; a method in which the upper limit (C) of the fluidized bed of solid particles is controlled so that it is positioned at a level below the first and second determined levels.

摘要翻译： 在包含基底，顶部，中心部分，上部和下部的立式反应器中，通过使用沉淀剂从含铀溶液中沉淀制备固体颗粒形式的铀浓缩物的方法， 铀浓缩物的固体颗粒在上升液流的作用下形成流化床，其从基体朝向反应器的顶部循环，依次通过反应器的下部，中心部分和上部，并且其中 是通过在反应器的底部引入液体循环电流（流动）而产生的，所述液体循环电流在反应器上部的第一确定水平（A）上被敲击，并在不沉降到反应器的底部 过多的液体也通过位于反应器上部的第二确定水平（B）的溢流抽真空; 控制固体颗粒的流化床的上限（C）使其位于低于第一和第二确定水平的水平的方法。

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。