DOI: 10.18503/1995-2732-2026-24-1-15-21
Abstract
The classification of powder materials, such as white fused alumina, is gaining increasing importance in modern manufacturing processes that demand high precision and quality standards. As requirements for material quality and characteristics become more stringent, there is a growing need to develop efficient and precise classification methods capable of separating powder into fractions with different bulk densities which will optimize production processes and increase the efficiency of the final product. Bulk density classification is crucial not only for achieving optimal performance characteristics of the final product but also for enhancing process profitability through waste reduction and improved raw material flow management. The objective of this study is to investigate the feasibility of classifying white fused alumina powder into fractions with distinct bulk densities using a laboratory-scale electrostatic separator. The experiments have employed an ELKOR-1 drum-type electrostatic separator. The novelty of this experimental research lies in conducting analysis with modified bulk density and variable process parameters (current, voltage, heater activation/deactivation, electrode positioning, drum rotation speed) to determine optimal separation conditions for F120 and F60 white fused alumina fractions. The study has identified the most appropriate operating parameters for achieving separation and obtaining minimal bulk density values for the F120 fraction (particle size -0.125+0.106 mm) and F60 fraction (particle size -0.3+0.25 mm). The researched patterns of white fused alumina electrostatic separation allow for optimization of enrichment method selection, particularly by eliminating energy-intensive and inefficient processes for the F60 fraction (-0.3+0.25 mm).
Keywords
crushing, granulometric analysis, bulk density, fused alumina, electrostatic separation, granularity.
For citation
Vilmis A.L., Drobadenko V.P., Dyachenko E.N., Nekoz K.S., Skripka A.A., Shalaeva A.A. Experimental Study of the Classification of White Fused Alumina Fractions by Electrostatic Separation. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2026, vol. 24, no. 1, pp. 15-21. https://doi.org/10.18503/1995-2732-2026-24-1-15-21
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