Assessment of the mineral composition, microstructure, and energy properties of the sample from the Shargun coal field based on instrumental analysis methods

Kh. Sharopov; D. Makhmarezhabov; M. Rabatuly; T. Daminov; D.S. Beisembay; B.A. Satbek

doi:10.31643/2028/6445.09

Authors

Kh. Sharopov Islam Karim Tashkent State Technical University
D. Makhmarezhabov National Quality Assurance Agency for Education under the Administration of the President of the Republic of Uzbekistan
M. Rabatuly Abylkas Saginov Karaganda Technical University
T. Daminov Islam Karim Tashkent State Technical University
D.S. Beisembay Abylkas Saginov Karaganda Technical University
B.A. Satbek Abylkas Saginov Karaganda Technical University

DOI:

https://doi.org/10.31643/2028/6445.09

Keywords:

spectrometric analysis, Microscopic analysis, granulometric composition, fluorescent spectrometer, Shargun coal.

Abstract

In this scientific article, the material composition and microstructure of the sample obtained from the Shargun coal deposit were studied based on complex instrumental methods. Based on the conducted research, the elemental composition was determined using an AL-NP-5010A X-ray fluorescence spectrometer, and microscopic analyses were carried out with an increase of up to 1600 times. The spectrometric analysis showed that the high intensities of silicon and aluminum are due to the high proportions of kaolin and quartz, which are aluminosilicates. Also, the detection of iron, calcium, and sulfur indicated the presence of additional sulfides in the iron and carbonate phases. Based on the results of microscopic analyses, it was established that the coal sample has a heterogeneous and porous structure, and the mineral inclusions within the organic matrix are located in a dispersed and clustered state, characterized by micro porousness. At the same time, the proportion of the mineral phase area according to the morphometric assessment was 18-27%, and the micro-porousness coefficient was in the range of 0.12-0.20. It was observed that the angular shape of the particles and the polydisperse granulometric composition correspond to the Rosin distribution. From the integral analysis of the obtained results, it was established that the high content of aluminosilicates and iron oxides increases the susceptibility to ash formation and slagging processes. Also, the presence of porous microstructures and microcracks made it possible to increase the reactivity of the process of heat treatment and gasification.

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Author Biographies

Kh. Sharopov, Islam Karim Tashkent State Technical University

PhD student of the Mining Department of Islam Karim Tashkent State Technical University, 100095, Almazar district, Universitetskaya street 2, Tashkent, Uzbekistan. ORCID ID: https://orcid.org/0009-0001-2042-3057

D. Makhmarezhabov, National Quality Assurance Agency for Education under the Administration of the President of the Republic of Uzbekistan

DSc, Associate Professor, Chief Inspector of the National Quality Assurance Agency for Education under the Administration of the President of the Republic of Uzbekistan, 100100, Bobur Street, 30, Tashkent, Uzbekistan. ORCID ID: https://orcid.org/0000-0002-7708-6485

M. Rabatuly, Abylkas Saginov Karaganda Technical University

Ph.D., Associate Professor, Department of Development of Mineral Deposits of Abylkas Saginov Karaganda Technical University, 100027, Ave. Nursultan Nazarbayev, 56, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0000-0002-7558-128X

T. Daminov, Islam Karim Tashkent State Technical University

PhD student of the Mining Department of Islam Karim Tashkent State Technical University, 100095, Almazar district, Universitetskaya street 2, Tashkent, Uzbekistan. ORCID ID: https://orcid.org/0009-0007-2798-2752

D.S. Beisembay, Abylkas Saginov Karaganda Technical University

Master's student, Department of Development of Mineral Deposits of Abylkas Saginov Karaganda Technical University, 100027, Ave. Nursultan Nazarbayev, 56, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0009-0002-4225-487X

B.A. Satbek, Abylkas Saginov Karaganda Technical University

Master's student, Department of Development of Mineral Deposits of Abylkas Saginov Karaganda Technical University, 100027, Ave. Nursultan Nazarbayev, 56, Karaganda, Kazakhstan. ORCID ID: https://orcid.org/0009-0006-6408-8445

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