Study of the Decomposition of Eudialyte Concentrate by Means of Sorption Conversion in Sulphic Medium

2020 ◽  
Keyword(s):  
Eudialyte Concentrate

Recovery of REEs, Zr(+Hf), Mn and Nb by H2SO4 leaching of eudialyte concentrate

2019 ◽  
Vol 186 ◽  
pp. 176-186 ◽  
Author(s):  
Adam Balinski ◽  
Petya Atanasova ◽  
Oliver Wiche ◽  
Norman Kelly ◽  
Markus Andreas Reuter ◽  
...  
Keyword(s):  
Eudialyte Concentrate

Influence of Acids on Extraction Efficiency of Zirconium and Rare Earth Metals in Eudialyte Concentrate Leaching

2019 ◽  
Vol 55 (6) ◽  
pp. 984-994
Author(s):  
V. A. Chanturia ◽  
V. G. Minenko ◽  
E. V. Koporulina ◽  
M. V. Ryazantseva ◽  
A. L. Samusev
Keyword(s):  
Rare Earth ◽  
Extraction Efficiency ◽  
Rare Earth Metals ◽  
Eudialyte Concentrate

Integrated technology of sulfuric acid treatment for eudialyte concentrate

2018 ◽  
pp. 20-27
Author(s):  
V. A. Matveev ◽  
◽  
D. V. Mayorov ◽  
A. V. Solovev ◽  
◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Acid Treatment ◽  
Sulfuric Acid Treatment ◽  
Integrated Technology ◽  
Eudialyte Concentrate

Leaching of rare earth elements from eudialyte concentrate by suppressing silica gel formation

2017 ◽  
Vol 108 ◽  
pp. 115-122 ◽  
Author(s):  
P. Davris ◽  
S. Stopic ◽  
E. Balomenos ◽  
D. Panias ◽  
I. Paspaliaris ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Silica Gel ◽  
Gel Formation ◽  
Eudialyte Concentrate

scholarly journals Recovery of Catapleiite and Eudialyte from Non-Magnetic Fraction of Eudialyte ore Processing of Norra Kärr Deposit

Minerals ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 19
Author(s):  
Ivan Silin ◽  
Devrim Gürsel ◽  
Christian Büchter ◽  
Lars Weitkämper ◽  
Hermann Wotruba
Keyword(s):  
Magnetic Separation ◽  
Froth Flotation ◽  
Magnetic Fraction ◽  
Low Grade ◽  
Magnetic Minerals ◽  
Potential Source ◽  
Ore Processing ◽  
Eudialyte Concentrate ◽  
Acid Esters ◽  
Alkali Feldspars

Eudialyte ores from Norra Kärr (Sweden) and Kringlerne (Greenland) are considered a potential source of rare-earth elements (REE) for the development of a sustainable REE industry outside China. Magnetic separation is successfully applicated to recover eudialyte as a magnetic fraction. In the case of the Norra Kärr deposit, up to 20% of the REE and up to 40% of the Zr are lost during mineral processing in the non-magnetic fraction. Zr and REE are associated with non-magnetic minerals such as catapleiite, low- or non-magnetic eudialyte species, and both their intergrowths. Besides zirconosilicates such as catapleiite and eudialyte, the non-magnetic fraction has valuable and already-liberated minerals such as alkali feldspars and nepheline, which should not be considered as tailings. In this investigation, a possible way to recover REE bearing zirconosilicates from the non-magnetic fraction using flotation is presented. First, a low-grade eudialyte concentrate (1.8% Zr, 0.94% REE) from ground ore was obtained using magnetic separation. The non-magnetic fraction was then treated using froth flotation, and a Zr-REE bearing product (9% Zr, 1.5% REE) was obtained as froth product. For this purpose, phosphoric acid esters were used as selective collectors for zirconosilicates at a pH between 3.5 and 4.5. The reagent regime could be proposed not only to recover Zr- and REE-bearing minerals, but also simultaneously to remove Fe, Ti, and other colored impurities from the nepheline-feldspar product and to minimize the tailings volume.

The Effect of Energy Impacts on the Acid Leaching of Eudialyte Concentrate

2020 ◽  
pp. 1-12 ◽  
Author(s):  
V.A. Chanturiya ◽  
V.G. Minenko ◽  
A.L. Samusev ◽  
E.L. Chanturia ◽  
E.V. Koporulina ◽  
...  
Keyword(s):  
Acid Leaching ◽  
Eudialyte Concentrate
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