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    • 8. 发明专利
    • Method for separating and recovering metal element from rare-earth-based magnetic alloy material
    • 从稀土金属合金材料中分离和回收金属元素的方法
    • JP2012167345A
    • 2012-09-06
    • JP2011030442
    • 2011-02-16
    • Sanwa Yuka Kogyo KkToyota Motor Corpトヨタ自動車株式会社三和油化工業株式会社
    • INOUE KOICHIROUCHINO KATSUTAKAMIZUNO SHINYA
    • C22B59/00B09B3/00C22B3/04C22B3/26C22B3/44C22B7/00
    • Y02P10/214Y02P10/234
    • PROBLEM TO BE SOLVED: To provide a simple method for recovering a metal element containing a rare earth element that is feasible even at a small scale while eliminating a complicated control or operation, etc. in the separation and recovery of a metal element such as a rare earth element, or the like, from a rare-earth-based magnetic alloy material.SOLUTION: The method includes: dissolving, in a sulfuric acid solution heated to a prescribed temperature, sulfate as far as the sulfate can be melted in the predetermined temperature, the sulfate being a constituent element of magnet; supplying a rare-earth-based magnetic alloy material to the solution so that the rare-earth-based magnetic alloy material is reacted with sulfuric acid for dissolution; baking, after the sulfate that is a constituent element of magnet has been precipitated, the precipitated sulfate to turn the sulfate of iron into iron oxide; then, immersing the baked residue in water to dissolve the sulfate of other constituent elements of magnet; and separating and recovering, after separated from the iron oxide, the other constituent element of magnet from the obtained sulfate solution by extraction and/or deposition.
    • 要解决的问题:提供一种简单的方法来回收含有稀土元素的金属元素,即使在小规模的情况下也是可行的,同时消除了金属元素的分离和回收中的复杂的控制或操作等 例如稀土元素等,由稀土类磁性合金材料制成。 解决方案:该方法包括:将硫酸盐溶解在加热到规定温度的硫酸溶液中,只要硫酸盐能够在预定温度下熔化,硫酸盐是磁体的构成元素; 向溶液中供给稀土类磁性合金材料,使稀土类磁性合金材料与硫酸反应而溶解; 在作为磁体的构成元素的硫酸盐已经析出之后,将沉淀的硫酸盐转化成铁的硫酸盐成为氧化铁; 然后将烘烤的残渣浸入水中以溶解磁铁的其它构成元素的硫酸盐; 并且通过萃取和/或沉积从所得到的硫酸盐溶液中分离和回收从氧化铁中分离的另一种磁体组成元素。 版权所有(C)2012,JPO&INPIT