Features of Microstructure Formation in Compacts Made from Modified Man-Made Materials
M. S. Garkavi1, E. V. Kolodezhnaya2, O. E. Gorlova2,3, I. V. Shadrunova2, N. N. Orekhova2,3
1Ural-Omega, Magnitogorsk, Russia
2Academician Melnikov Institute of Comprehensive Exploitation of Mineral Resources-IPKON, Russian Academy of Sciences, Moscow, Russia
3Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia
Keywords: Man-made materials, aluminous waste, fine milling, compacts made from man-made materials, atomic force microscopy, structural and morphological changes, subgrains, surface roughness, sinters
Abstract
The microstructural features of compacts made from milled refractory waste of fused aluminous product were analyzed. Structural and morphological changes in compacts when milled with a modifying agent were studied and determined. Test results indicate that compacts produced from modified powder exhibit a more homogeneous structure. The coarsening of subgrains during dry milling with a modifier suggests the formation of dense and strong inter-particle contacts; consequently, compacts made from the modified material will experience reduced surface stresses and strains in roasting, thereby enhancing the quality of finished products manufactured from man-made waste. The findings provide a basis for the development of aluminous waste processing and recycling technologies.
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