| Abstract |
This article provides a brief review of the application of the X-ray computer microtomography in the studies of mineral raw materials, as well as the relevant generalized results of the authors’ own research. It is noted that X-ray computed microtomography is one of the promising introscopic methods for studying mineral raw materials, which has recently been successfully used in researches of ores, rocks, coal, mining and processing waste, composites and other materials. The advantages of tomography, as compared to other X-ray and optical methods, consist in its efficiency and high information content at minimized human factor. Along with the growing popularity and relevance of the method, the number of problems to be solved using X-ray microtomography is also increasing. In particular, a very urgent problem is to study dynamics of change in internal structure of rocks exposed to various force fields (compression, tension, temperature and other effects) in practical geotechnology and mineral processing. Being a non-destructive research method, X-ray computed microtomography has a number of undeniable advantages in studying processes of deformation and fracture of ores and rocks as it allows examining pore space structure of rock samples without destroying them. At the same time, the review of relevant publications demonstrates that in each case, the tomographic characteristics of separate (or single) samples are studied and described depending on a specific objective. At the moment, no generalized dependencies have been identified to describe the relationship between the structures of pore space and the physical and mechanical properties of rocks. Computed tomography enables quantitative characterization of the pore space structure with regard to the physical and mechanical properties of rocks, which provides the grounds for substantiating energy-efficient crushing methods with allowance for textural and structural features of ores and rocks.
The work was supported by the Russian Science Foundation, Project No. 17-79-30056. |
| References |
1. SkyScan: X-ray microtomography, X-ray nanotomography, non-destructive testing, small animal imaging, 2D/3D image analysis. Available at : http://www.spektronika.ru/sites/default/files/skyscan_1174_from_spektronika.pdf (accessed: 15.04.2020).
2. Yakushina O. A., Zinchenko S. V., Khozyainov M. S. Computer automatic system of analysis of X-ray tomographic and optical images. Proceedings of the Department of General and Applied Geophysics. Moscow : RAEN, 2007. pp. 217–228.
3. Hounsfield G. N. A method of and apparatus for examination of a body by radiation such as computerized transverse axial scanning (tomography). Part 1: Description of system. British Journal of Radiology. 1973. Vol. 46. pp. 1016–1022.
4. Khozyainov M. S., Vainberg E. I. X-ray microtomography scanner as a tool for studying rock samples. Proceedings of International Scientific Conference : Geophysics and the Modern World. Moscow : VINITI, 1993. p. 255.
5. Yakushina O. A. Sycheva N. A., Ozhogina E. G. Morphostructural analysis of ferrous metal ores by X-ray tomography. Russian Technological Mineralogy Seminar : New methods of technological mineralogy during the assessment of ores of metals and industrial minerals. Petrozavodsk : KSC RAS, 2009. pp. 40–45.
6. Yakushina O. A., Zinchenko S. V., Khozyainov M. S. Computer automatic system of analysis of X-ray tomographic and optical images. Proceedings of a Chair of General and Applied Geophysics. Moscow : RAEN, 2007. pp. 217–228.
7. Yakushina O. A., Ozhogina E. G., Khozyainov M. S. Microtomography of technogenic mineral raw materials. Vestnik. Institute of Geology of the Komi Science Center, Ural Branch of the Russian Academy of Sciences. 2015. No. 11(251). pp. 38–43.
8. Yakushina O. A., Ozhogina E. G., Bronitskaya E. S., Kozarezov E. V., Khozyainov M. S. X-ray tomography of carbonate manganese ores of the Tyninskoye deposit. Rudy i metally. 2001. No. 4. pp. 53–60.
9. Reyes F., Lin Q., Udoudo O., Dodds C., Lee P. D., Neethling S. J. Calibrated X-ray micro-tomography for mineral ore quantification. Minerals Engineering. 2017. Vol. 110. pp. 122–130.
10. Yakushina O. A., Iospa A. V., Khozyainov M. S., Ozhogina E. G. Morphostructural analysis and quality prediction of minerals based on x-ray tomography data. XVII International Conference Proceedings : Physicochemical and Petrophysical Studies in Earth Science. Moscow, 2017. pp. 340–342.
11. Karabutov A. A., Cherepetskaya E. B., Kravtsov A. N., Arrigoni M. Methods of studying the structure and properties of rocks on samples (brief overview). Gornye nauki i tekhnologii. 2018. No. 4. pp. 10–20.
12. De Kock T., Boone M. A., De Schryver T., Van Stappen J., Derluyn H. et al. A Pore-Scale Study of Fracture Dynamics in Rock Using X-ray micro-CT Under Ambient Freeze-Thaw Cycling. Environmental Science and Technology. 2015. Vol. 49(5). pp. 2867–2874.
13. Mehmedi Vehbi Gökçe, İsmail İnce, Mustafa Fener, Taha Taşkıran, Kamil Kayabali. The effects of freeze–thaw (F–T) cycles on the Gödene travertine used in historical structures in Konya (Turkey). Cold Regions Science and Technology. 2016. Vol. 127. pp. 65–75.
14. Rode M., Schnepfleitner H., Sass O. Simulation of moisture content in alpine rockwalls during freeze–thaw events. Earth Surface Processes and Landforms. 2016. Vol. 41, No. 13. pp. 1937–1950.
15. Vaisberg L. A., Kameneva E. E. Changes in rock structure with cyclic freezing and thawing. Obogashchenie rud. 2015. No. 2. pp. 28–31. DOI: 10.17580/or.2015.02.06
16. Lau S. H., Miller J., Chen-Luh Lin. 3D Mineralogy, texture and damage analysis of multiphase mineral particles with a high contrast, submicron resolution X-ray tomography system. XXVI International Mineral Processing (IMPC-2012). New Delhi, 2012. Paper No 1022.
17. Viktorov S. D., Kochanov A. N., Pachezhertsev A. A. Analysis of structural defects in granite by computer x-ray microtomography. Abstracts of Papers. The Seventh International Conference on Crystal Physics and the Deformation Behavior of Advanced Materials. Moscow : MISIS, 2017. p. 56.
18. Viktorov S. D., Kochanov A. N. Some aspects of rock destruction from the standpoint of crack strength and mechanics. Proceedings of the 60th International Conference on Current Strength Problems. Vitebsk. 2018. pp. 340–342.
19. Kochanov A. N. Experimental methods and results of studying the structure, state and physico-mechanical properties of rocks. Fundamentalnye i prikladnye voprosy gornykh nauk. 2019. Vol. 6, No. 1. pp. 139–145.
20. Damaskinskaya E. E., Panteleev I. A., Gafurova D. R., Frolov D. I. Structure of a Deformed Inhomogeneous Material on the Data of Acoustic Emission and X-Ray Computer Microtomography. Physics of the Solid State. 2018. Vol. 60, No. 7. pp. 1363–1367.
21. Jun Chen, Zheng Xu, Yue Yu, Yangping Yao. Experimental characterization of granite damage using no nlinear ultrasonic techniques. NDT & E International. 2014. Vol. 67. pp. 10–16.
22. De Boever E., Varloteaux C., Nader F. H., Foubert A., Békri S. et al. Quantification and Prediction of the 3D Pore Network Evolution in Carbonate Reservoir Rocks. Oil and Gas Science Technology. 2012. Vol. 67, No. 1. pp. 161–178.
23. Sheng-Qi Yang. Fracturing Mechanism of Compressed Hollow-Cylinder Sandstone Evaluated by X-ray Micro-CT Scanning. Rock Mechanics and Rock Engineering. 2018. Vol. 51, No. 7. рр. 2033–2053.
24. Galkin S. V., Efimov A. A., Krivoshchekov S. N., Savitskiy Ya. V., Cherepanov S. S. X-ray tomography in petrophysical studies of core samples from oil and gas fields. Russian Geology and Geophysics. 2015. Vol. 56, No. 5. pp. 782–792.
25. Abrosimov A. A., Pimenov Yu. G. Reservoir properties research of Khadum clay differences using nondestructive methods. Geofizika. 2016. No. 6. pp. 79–84.
26. Yakimchuk I. V., Kazak A. V., Varfolomeev I. A., Korobkov D. A., Koroteev D. A. Combination of three-dimensional images in the analysis of X-ray microtomography of rock samples. Proceedings of All-Russian Conference on Practical Microtomography. Moscow, 2013. pp. 168–174.
27. Kostin A. K., Kuznetsov E. G., Vilesov A. P. Experience of TNNC LLC in core study using CT scanner. Nauchno-tekhnicheskii vestnik Rosneft. 2014. No. 3. pp. 18–21.
28. Stepanov S. V., Patrakov D. P., Vasiliev V. V., Shabarov A. B., Shatalov A. V. Challenges and opportunities of Digital Core analysis. Neftyanoe khozyaistvo. 2018. No. 2. pp. 18–22.
29. Efimov A. A., Savitsky Y. V., Galkin S. V. Experience of using X-ray tomography in the study of reservoir and mechanical properties of rocks. Practical Microtomography : All-Russia Conference Proceedings. Moscow, 2013. pp. 124–128.
30. Strelchenko V. V., Pimenov Yu. G., Sokolov D. I., Shumeyko A. E. Specific features of obtaining structured objects in rocks by X-ray tomography. Practical Microtomography : All-Russia Conference Proceedings. Kazan, 2013. pp. 41–45.
31. Talovina I. V., Aleksandrova T. N., Popov O., Lieberwirth H. Comparative analysis of rocks structural-textural characteristics studies by computer X-ray microtomography and quantitative microstructural analysis methods. Obogashchenie rud. 2017. No. 3. pp. 56–62. DOI: 10.17580/or.2017.03.09
32. Vaisberg L. A., Kameneva E. E., Aminov V. N. Evaluation of technological capabilities of crushed stone grade management in disintegration of building rocks. Stroitelnye materialy. 2013. No. 11. pp. 30–34.
33. Rebinder P. A., Schukin E. D., Margolis L. Ya. Mechanical strength of porous dispersed bodies. Doklady Akademii Nauk SSSR. 1964. Vol. 154(695). No. 3. pp. 695–698. |
X-ray computed microtomography as the basis for mineral processing improvement : review
