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2. 发明申请

WO2014082113A1 PROCESSING OF RARE EARTH AND URANIUM CONTAINING ORES AND CONCENTRATES 审中-公开
标题翻译：加工稀土和含铀矿和浓缩物
公开(公告)号：WO2014082113A1
公开(公告)日：2014-06-05
申请号：PCT/AU2012/001463
申请日：2012-11-30
申请人： GREENLAND MINERALS AND ENERGY LTD , KREBS, Damien , FURFARO, Domenic
发明人： KREBS, Damien , FURFARO, Domenic
IPC分类号： C22B60/02 , C22B59/00 , C22B3/04
CPC分类号： C22B3/06 , C22B59/00 , C22B60/0226 , C22B60/0234 , Y02P10/234
摘要： A method (10) for the hydrometallurgical processing of rare earth and uranium containing ores and concentrates, the method comprising the steps of: (i) Passing a rare earth ore to a concentration step in which is produced a rare earth phosphate concentrate (12); (ii) Passing the rare earth phosphate of step (i) to a first atmospheric leach step (16) in which the rare earth phosphate concentrate is leached in weak acid; (iii) Passing the product of step (ii) to a first solid liquid separation step (18); (iv) Passing the liquid product of step (iii) to a uranium recovery circuit (20); and (v) Passing the solids product of step (iii) to second atmospheric leach step (24) in which the solids are leached in strong acid and in which substantially all the rare earth elements present precipitate as sodium rare earth double sulphates, wherein the conditions of the first and second leach steps (16, 24) are controlled such that substantially no silica gelling occurs.
摘要翻译：一种用于稀土和含铀矿石和浓缩物的湿法冶金加工的方法（10），所述方法包括以下步骤：（i）将稀土矿石送入产生稀土磷酸盐浓缩物（12）的浓缩步骤， ; （ii）将步骤（i）的稀土磷酸盐通过稀酸磷酸盐浓缩物在弱酸中浸出的第一大气浸出步骤（16）; （iii）将步骤（ii）的产物通入第一固体分离步骤（18）; （iv）将步骤（iii）的液体产物通入铀回收回路（20）; 和（v）将步骤（iii）的固体产物通入第二大气浸出步骤（24），其中固体在强酸中浸出，其中存在基本上所有稀土元素作为稀土稀土双硫酸盐沉淀，其中控制第一和第二浸出步骤（16,24）的条件使得基本上不发生二氧化硅胶凝。

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