Strength Research of Rock Cores after High-Energy Electron Beam Irradiation
a:2:{s:4:"TYPE";s:4:"TEXT";s:4:"TEXT";s:51:"S. A. KONDRAT’EV, V. I. ROSTOVTSEV, I. I. BAKSHEEVA";}
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: минеральное сырье, известняк, роговик, песчаник, прочность, деформация, акустика, упругие волны, обработка ускоренными электронами, рудоподготовка, mineral raw material, limestone, hornfels, sandstone, strength, deformation, acoustics, elastic waves, accelerated electron irradiation, ore pre-treatment
Abstract
The data of experimental research into mechanical properties of limestone, hornfels and sandstone cores after treatment by accelerated electrons show that the irradiation changes the strength and deformation characteristics of the tested rocks. In limestone and hornfels, uniaxial compression strength and elasticity modulus decrease, and ratio of P- and S- wave velocities changes; in sandstone, tension strength decreases, while uniaxial compression strength, P- and S-wave velocities and dynamic Young’s modulus grow. Modification of the minerals after accelerated electron irradiation opens ways of creating efficient energy-saving technologies for pre-treatment and processing of composite ore.
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