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Title: INVESTIGATION OF KINETIC REGULARITIES OF CHLORIDE LEACHING PROCESSES OF TITANIUM PRODUCTION WASTES

Year

2025

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323

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Title

INVESTIGATION OF KINETIC REGULARITIES OF CHLORIDE LEACHING PROCESSES OF TITANIUM PRODUCTION WASTES

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Authors

Bauyrzhan Orynbayev; Azamat Toishybek; Almagul Ultarakova; Arailym Mukangaliyeva; Kaisar Kassymzhanov

DOI

10.5593/sgem2025/1.1/s04.47

DOI Issue

10.5593/sgem2025/1.1

ISSN

1314-2704

ISBN

978-619-7603-79-8

Language

English

Volume

Issue

1.1

Editor

• Prof. Dr. hab. oec. Baiba Rivza, LATVIA• Prof. DSc. Ildiko Tulbure, GERMANY• Prof. DSc. Oleksandr Trofymchuk, UKRAINE

Scientific Area

Sustainable Mineral Processing and Resource Efficiency

Abstract/ Foreword

The paper presents the results of investigation of the process of leaching of scandium from chloride wastes generated in titanium production to optimize the parameters of extraction into solution. The effects of key factors, including solid-to-liquid ratio (S:L), hydrochloric acid (HCl) concentration, process duration, stirring speed and the influence of temperature on the degree of scandium extraction into solution were studied. Experimental results indicate that optimal conditions for maximum extraction are: S:L ratio=1:10, HCl concentration = 0.12 percent (pH=1.47), temperature (80 to 90 degrees Celsius), duration =60 minutes, and stirring speed =300 rpm. It is shown that increasing the HCl concentration to 3 percent further enhances scandium recovery to 97.2 percent, corresponding to a pH = -0.82. A comprehensive kinetic analysis was performed by fitting the experimental data with the exponential kinetic equation, Yander diffusion equation, Drozdov-Rotinian equation and Prout-Tompkins equation. The findings contribute to the development of an efficient scandium recovery technology, reducing the environmental impact and enabling the secondary utilization of the valuable component.

References (click to open)

[1] Kobzhasov A.K. Metallurgiya vanadiya i skandiya: Ucheb. posobiye. –Almaty: KazNTU. 2007. -230 s.
[2] Korshunov B.G. Scandium / B.G. Korshunov, A.M. Reznik, S.A. Semenov. - M.: Metallurgy, 1987. - 184 ?
[3] Orynbayev, B., Baigenzhenov, O., & Turan, M. (2024). Overview of Technologies Used to Extract Scandium from Secondary Raw Materials. Kompleksnoe Ispolzovanie Mineralnogo Syra =Complex Use of Mineral Resources, 331(4), 109 - 116.
https://doi.org/10.31643/2024/6445.44
[4] S. Reid, J. Tam, M. Yang, G. Azimi, Technospheric Mining of Rare Earth Elements from Bauxite Residue (Red Mud): Process Optimization, Kinetic Investigation, and Microwave Pretreatment, Sci. Rep. 7 (2017) 1–9, https://doi.org/10.1038/s41598-017-15457-8
[5] O.S. Baigenzhenov, T.A. Chepushtanova, etc. (2024). Investigation of thermodynamic and kinetic regularities of asbestos waste leaching processes. Results in Engineering 21 (2024) 102000 https://doi.org/10.1016/j.rineng.2024.102000
[6] A. Panshin, S. Mamyachenkov, D. Tropnikov, et al., Investigation into regularities of leaching sulfated cinders of roasting copper-zinc middlings, Russ. J. Non-Ferrous Metals 58 (2017) 345–350, https://doi.org/10.3103/S1067821217040137.

Acknowledgements (click to open)

This work was funded b? the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No. AP23488503).

Type

conference

Url

https://doi.org/10.5593/sgem2025/1.1/s04.47

Full manuscript

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INVESTIGATION OF KINETIC REGULARITIES OF CHLORIDE LEACHING PROCESSES OF TITANIUM PRODUCTION WASTES

Proceedings Тitle

Proceedings of 25th International Multidisciplinary Scientific GeoConference SGEM 2025, Volume 25, Issue 1.1

Note

25th International Multidisciplinary Scientific GeoConference SGEM 2025, Volume 25, Issue 1.1, 29 June - 6 July, 2025

Type

Proceedings Paper

Publisher

STEF92 Technology

Series

International Multidisciplinary Scientific GeoConference Surveying Geology and Mining Ecology Management, SGEM

Organization

SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Russian Acad Arts; Turkish Acad Sci.

Pages

387-396

Date

29 June - 6 July, 2025

Online Source Type

website

Digital Source Type

10326

Keywords

chloride waste, leaching, scandium, extraction, hydrochloric acid, titanium production