FIELD: metallurgy.
SUBSTANCE: method of extracting rare-earth metals from solutions containing iron (III) and aluminium comprises sorption of rare-earth metals on sorbent. Ampholyte with iminodiacetic functional groups is used as said sorbent. Sorption is carried out after preliminary neutralisation or acidification of solution to pH 4-5 by whatever alkaline or acid agent to add ampholyte in obtained pulp with separation of solid fraction. Sorption is conducted at ampholyte:pulp ratio of 1:50-1:150, phase contact time of 3-6 h and in the presence of reducing agent.
EFFECT: higher selectivity.
Translated title of the contributionMETHOD OF EXTRACTING RARE-EARTH METALS FROM TECHNOLOGICAL AND PRODUCTIVE SOLUTIONS AND PULPS: patent of invention
Original languageRussian
Patent number2484162
IPCC22B 59/00,C01F 17/00,C22B 3/24
Filing date29/12/2010
Publication statusPublished - 10 Jun 2013

    GRNTI

  • 61.01.00

ID: 12197562