Abstract
The results of research on the development of the scientific foundations of the complex technology of processing Lovozersky eudialyte concentrate are summarized. The features of the concentrate composition are reported. The regularities of concentrate decomposition by sorption conversion with low-concentration solutions of mineral acids, desorption of metals from sulfocationite, stepwise hydrolytic deposition from eluates of concentrates of rare elements, the use of silicic acid transferred to solutions with simultaneous recirculation of acid solutions were studied. The outlines of the technology of complex processing of eudialyte concentrate are outlined, which provides for the production of concentrates of rare metals and the use of the main part of the silica and alkali metals contained in the concentrate.
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