Scandium modified zirconia extracted from red mud as a waste of alumina production
https://doi.org/10.17586/2220-8054-2024-15-6-768-773
Abstract
The total or partial utilization or recycling of bauxite processing waste (red mud) has the potential to reduce the harmful effect on the environment while simultaneously extracting the most valuable ingredient, scandium which is currently underutilized due to its high cost. The new efficient carbonation technology promises an assured supply of scandium and zirconium at a significantly reduced cost. Here, scandium-zirconium concentrate, extracted by hydrolysis from leachate after carbonate treatment of red mud, was subjected to sintering by ceramic technology at 1100◦C to produce scandia-stabilised zirconia (ScSZ). The XRD patterns demonstrate the successful doping of scandium into the zirconia lattice through the hydrolytic precipitation method. The ratio between the essential components of the functional ceramics Zr and Sc is approximately 4, which correlates with the doping level of ScSZ up to Zr0.8Sc0.2O1.9.
Supporting agencies: The work was supported by RCF and Government of the Sverdlovsk region, project No. 24-29-20278, https://rscf.ru/en/project/24-29-20278/
About the Authors
L. A. Pasechnik
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Liliya A. Pasechnik
Pervomayskaya, 91 Ekaterinburg 620108
I. S. Medyankina
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Irina S. Medyankina
Pervomayskaya, 91 Ekaterinburg 620108
D. I. Pereverzev
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Danil I. Pereverzev
Pervomayskaya, 91 Ekaterinburg 620108
A. Yu. Chufarov
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Alexander Yu. Chufarov
Pervomayskaya, 91 Ekaterinburg 620108
A. Yu. Suntsov
Institute of Solid State Chemistry UB RAS
Russian Federation
Russian Federation
Alexey Yu. Suntsov
Pervomayskaya, 91 Ekaterinburg 620108
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Review
For citations:
Pasechnik L.A., Medyankina I.S., Pereverzev D.I., Chufarov A.Yu., Suntsov A.Yu. Scandium modified zirconia extracted from red mud as a waste of alumina production. Nanosystems: Physics, Chemistry, Mathematics. 2024;15(6):768-773. https://doi.org/10.17586/2220-8054-2024-15-6-768-773
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