Determining patterns of leaching titanium(IV) from the Irshansky deposit ilmenite

Authors

DOI:

https://doi.org/10.15587/1729-4061.2024.304661

Keywords:

ilmenite concentrate, alkaline leaching, potassium hydroxide, potassium titanate, degree of extraction

Abstract

The research object is the ilmenite concentrate from the Irshansky deposit. This study describes an elemental composition of the mineral raw material and confirms its structure using the X-ray diffraction and scanning electron microscopy. Experimental studies have shown that the ilmenite concentrate from the Irshansky deposit has a significant titanium content in terms of titanium dioxide (79 %). Mineral raw materials with such a chemical composition are unique, so there is a need to find alternative methods for its processing. The research demonstrates that the maximum degree of extraction in the process of alkaline leaching of the ilmenite concentrate is achieved under the condition that the average diameter of particles of the mineral raw material should be ≤71 μm. As a result of temperature studies, it has been found that a temperature of 453 K would suffice to obtain potassium titanate at atmospheric pressure. Further temperature increase does not provide for a significant increase in the degree of titanium extraction, and also contributes to the formation of polytitanates of various compositions. The study of the influence of the molar ratio of the starting reagents on the degree of extraction of titanium(IV) from the ilmenite concentrate has showed that the optimal molar ratio between the components corresponds to the stoichiometric one and is 1:2. Increasing the amount of potassium hydroxide in the reaction mixture is impractical as it reduces the yield of potassium titanate, and the final product will have high alkalinity due to excess alkali. The optimal time for alkaline leaching is three hours of continuous heating in a glycerin bath. A further increase in the duration of heating does not lead to an increase in the degree of extraction, which is associated with the diffusion of alkali from the surface of the nucleus into the volume of ilmenite particles due to the formed products of interaction and annihilation of the initial nuclei

Author Biographies

Snizhana Pysarenko, Zhytomyr Ivan Franko State University

PhD

Department of Chemistry

Oleksandr Kaminskyi, Scientific Lyceum of the Zhytomyr Ivan Franko State University

PhD, Associate Professor, Chemistry Teacher of the Highest Category

Roman Denysiuk, Zhytomyr Ivan Franko State University

PhD, Associate Professor

Department of Chemistry

Olena Yevdochenko, Zhytomyr Ivan Franko State University

PhD

Department of Chemistry

Olena Chyhyrynets, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Doctor of Technical Sciences, Professor

Department of Physical Chemistry

Olena Anichkina, Zhytomyr Ivan Franko State University

PhD, Associate Professor

Department of Chemistry

Olga Avdieieva, Scientific Lyceum of the Zhytomyr Ivan Franko State University

PhD, Associate Professor, Teacher

Yuliia Lysetska, Scientific Lyceum of the Zhytomyr Ivan Franko State University

English Teacher

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Determining patterns of leaching titanium(IV) from the Irshansky deposit ilmenite

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Published

2024-06-28

How to Cite

Pysarenko, S., Kaminskyi, O., Denysiuk, R., Yevdochenko, O., Chyhyrynets, O., Anichkina, O., Avdieieva, O., & Lysetska, Y. (2024). Determining patterns of leaching titanium(IV) from the Irshansky deposit ilmenite. Eastern-European Journal of Enterprise Technologies, 3(12 (129), 28–35. https://doi.org/10.15587/1729-4061.2024.304661

Issue

Vol. 3 No. 12 (129) (2024): Materials Science

Section

Materials Science

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Copyright (c) 2024 Snizhana Pysarenko, Oleksandr Kaminskyi, Roman Denysiuk, Olena Yevdochenko, Olena Chyhyrynets, Olena Anichkina, Olga Avdieieva, Yuliia Lysetska

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