Influence Exerted by Ultrasound Processing on Efficiency of Leaching, Structural, Chemical, and Morphological Properties of Mineral Components in Eudialyte Concentrate

Chanturia, V. A.; Minenko, V. G.; Samusev, A. L.; Ryazantseva, M. V.; Chanturia, E. L.; Копорулина, Е. В.

doi:10.1134/s1062739118023641

Cited by 7 publications

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“…After leaching with preliminary MA, a decrease in the peak intensities of eudialyte and nepheline on the X-ray patterns of the samples is observed, confirming their active dissolution and amorphization of the surface. For aegirine and minerals of the feldspar group, these changes are less noticeable [24].…”

Section: Energy Effects On Structural and Chemical Properties Phase C...mentioning

confidence: 96%

“…Eudialyte ores containing 25-27 % eudialyte, 52 % feldspar, loparite and nepheline, 20 % aegirine can be treated according to combined flotation-gravity-magnetoelectric enrichment circuits to obtain eudialyte and loparite concentrates [22,23]. The resulting eudialyte concentrates at minimal radioactivity contain oxides of Si (54 %), Zr (11-13 %), REE (1.8-2.5 %), Hf (0.21-0.27 %), Ta (0.06-0.1 %), Nb and Ti (0.6-1 %), Sr (0.95-1.48 %) [24,25].…”

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confidence: 99%

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Scientific substantiation and development of innovative processes for the extraction of zirconium and rare earth elements in the deep and comprehensive treatment of eudialyte concentrate

Chanturia

2022

PMI

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Based on a package of modern analysis methods, the influence of various acids and energy effects on the morphology, elemental composition, structural and chemical transformations of the mineral surface, and the efficiency of eudialyte concentrate leaching was studied. The mechanism and the optimal conditions and specific features of the destruction of eudialyte and rock minerals and the extraction of zirconium and REE under the influence of various acids, powerful nanosecond pulses, dielectric barrier discharge, electrochemical processing, mechanochemical activation and ultrasound were revealed. The mechanism of formation and the optimal conditions for the dispersion of silica gel, depending on the methods and parameters of energy effects, was theoretically and experimentally substantiated. A combined three-stage circuit of nitric acid leaching of eudialyte concentrate with ultrasonic treatment of the suspension, providing 97.1 % extraction of zirconium and 94.5 % REE, were scientifically substantiated and tested. The conditions for the selective deposition of zirconium and REE were theoretically and experimentally substantiated.

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Section: Energy Effects On Structural and Chemical Properties Phase C...mentioning

confidence: 96%

mentioning

confidence: 99%