公开(公告)号：US5756056A

公开(公告)日：1998-05-26

申请号：US748630

申请日：1996-11-13

申请人： Akira Kimura ,  Kosuke Murai ,  Hiromasa Yakushiji

发明人： Akira Kimura ,  Kosuke Murai ,  Hiromasa Yakushiji

IPC分类号： C22B3/04 ,  C01F17/00 ,  C22B3/44 ,  C22B59/00

CPC分类号： C22B23/043 ,  C22B23/0469 ,  C22B59/00

摘要： A process for recovering scandium economically with high efficiency by concentration and separation from an oxide ore containing nickel and a small amount of scandium as well as a large amount of iron and/or aluminum comprises the steps of acid leaching the oxide ore under a high-temperature, high-pressure oxidative atmosphere while restraining leaching of the iron and/or aluminum, thereby selectively leaching substantially all nickel and scandium from the ore, recovering the nickel from the resulting leaching solution as a precipitated sulfide while not precipitating the scandium as a sulfide but leaving the total amount thereof in the solution, and then adjusting the pH of the solution with a precipitant to recover the scandium from the solution as a high-concentration scandium hydroxide or carbonate by concentration and separation.

摘要翻译： 通过浓缩和从含有镍和少量钪的氧化物矿石以及大量的铁和/或铝的分离而高效地回收钪的方法包括以下步骤：在高温下将氧化物矿石浸出， 温度，高压氧化气氛，同时抑制铁和/或铝的浸出，从而选择性地从矿石中浸出所有的镍和钪，从沉淀的硫化物中回收所得的浸出溶液中的镍，同时不沉淀出作为硫化物的钪 但将其总量留在溶液中，然后用沉淀剂调节溶液的pH，以通过浓缩和分离从作为高浓度钪氢氧化物或碳酸盐的溶液中回收钪。