| 简介 |
FIELD : chemistry.
SUBSTANCE : invention relates to methods of extracting at least one rare-earth element. Methods involve obtaining acid composition containing at least one rare-earth element and at least one rare metal. Then reacting said composition with agent with selective extraction of first rare-earth element and optionally first rare metal.
EFFECT : possibility to extract different rare-earth elements, such as scandium, yttrium, lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium and various rare metals, such as indium, zirconium, lithium, gallium.
306 cl, 26 dwg, 19 tbl, 8 ex |
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