- Abstract:
- The study was conducted to investigate changes in the morphology of atmospherically oxidized sulfide ore surfaces after ultrasonic treatment. Studies of the surface morphology of polished sections confirmed that ultrasonic treatment removes passivating films and significantly alters the surface morphology, causing damage and leading to the formation of defects such as channels and craters. The experiment showed that ultrasonic treatment of polished sections with a volumetric intensity of 0,44 to 0,78 W/cm3 for 15 minutes only partially removes oxide films from the surface of pyrrhotite and chalcopyrite. At a volumetric intensity of 0,78 W/ cm3 to 1 W/cm3, the oxide films are completely destroyed, and pyrrhotite and chalcopyrite undergo significant changes in morphology, forming numerous defects. With a maximum volumetric oscillation intensity of 1 W/cm3 and an increase in the processing time to 30 minutes, the number of channels and craters on the surface increases. The results of the research show that ultrasonic treatment of ore pulps can increase the rate of bacterial-chemical oxidation by significantly increasing the number of defects in the surface layers of the crystal lattice, increasing its contact area and shape. This will enable the development of innovative, cost-effective technologies for processing sulphide ores.
- Keywords:
- sulfide ore, ultrasound, volumetric radiation intensity, duration, polished section, oxide (passivating) film, surface morphology, defect
- For citation:
- Avreitsevich A.A., Iodis V.A. Study of changes in the morphology of the oxidized surface of sulfide ore during its ultrasonic treatment. Mine Surveying and Subsurface Use. 2026; 26 (3): 15-20. (In Russ.). https://doi.org/10.56195/20793332-202626-3-15-20.
- Information about the authors:
-
- Artem A. Avreitsevich – Postgraduate Student of the Research Geotechnological Center, Far Eastern Branch of Russian Academy of Sciences (RGC FEB RAS), Petropavlovsk-Kamchatsky, Russian Federation
- Valentin A. Iodis – Сand. Sci. (Eng.), Leading Researcher of the Research Geotechnological Center, Far Eastern Branch of Russian Academy of Sciences (RGC FEB RAS), postgraduate student’s supervisor, Petropavlovsk-Kamchatsky, Russian Federation;
This email address is being protected from spambots. You need JavaScript enabled to view it. ; https://orcid.org/0000-0001-8002-0658
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