Authors: Yu.V. Novikov, V.V. Vlasova, V.V. Barakhtenko, A.E. Burdonov

Title of the article: Investigation of the influence of temperature on the strength of igneous rocks

Year: 2024, Issue: 6, Pages: 140-148

Branch of knowledge: 2.8.9. Mineral processing

Index UDK: 622.023.2

DOI: 10.26730/1999-4125-2024-6-140-148

Abstract: Studying the impact of temperature conditions on the strength of igneous rocks is a crucial task in developing effective technologies for their processing. Igneous rocks, such as porphyry, dolerite, and gabbro-dolerite, are commonly found in mining operations. In northern regions, where temperatures range from high to extreme, fluctuations in temperature can significantly alter the physical and mechanical properties of these rocks, affecting their behavior during processing. Such changes can lead to increased equipment wear and decreased productivity of technological processes. To investigate this phenomenon, laboratory tests were conducted to examine the effect of temperatures ranging from +20°C to -196°C on the strength properties of the aforementioned rocks. The M.M. Protodianokov method was used to determine the strength coefficient, and the granulometric composition of the fractured material was analyzed.It has been determined that changes in temperature have an effect on the granulometric properties, which is significant for the process of rock crushing and grinding. It was found that at a temperature of -5°C, the strength of the rock increases by 51.04% for porphyrite and 102.86% for gabbradolerite. The findings emphasize the need to consider temperature factors when designing equipment and selecting rock processing techniques in order to improve the efficiency and reliability of manufacturing processes under various temperature conditions.

Key words: Strength coefficient igneous rocks nitrogen climatic chambers mineralogy SEM

Receiving date: 27.04.2024

Approval date: 22.11.2024

Publication date: 05.12.2024

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