DOI: 10.18503/1995-2732-2026-24-2-23-30
Abstract
Problem Statement (Relevance). The growth in mining volumes and increasing pit depths necessitate the improvement of technological schemes with a transition to combined transportation systems, such as truck-conveyor and truck-rail haulage. During the open-pit mining of complex-structured deposits, a significant amount of substandard ore is extracted together with marketable ore. At the same time, blasting and fragmentation of ores of certain formation types generate fine ore fractions enriched with valuable components, the content of which is sufficient for economically viable processing. Objectives. The research is aimed at substantiation of an adaptive technological scheme providing flexible quality management of mineral raw materials through the separation of productive fine fractions from sub-standard ore mass at an upgraded hopper-excavator transfer station during its reloading from dump trucks to railway transport. Result. The proposed adaptive scheme, incorporating an improved transfer station equipped with vibrating grizzly feeders and other classification equipment, makes it possible to separate productive fractions of rational size depending on the metal content in the substandard ore mass. The recovered fine ore is accumulated in a storage bunker and subsequently transported to the processing plant, where it is treated together with marketable ore. Conclusions. Regulation of the size range of the separated fine fractions enables the production of higher-quality mineral raw materi-als compared with existing technological solutions. The integration of ore transfer and classification processes ensures relatively low operating costs and a short payback period for modernization investments. Application of the proposed technology makes it possible to additionally direct for beneficiation mineral raw materials containing more than 4% metal recovered from the subsurface, while also reducing the environmental impact of mining operations.
Keywords
Complex-structured deposits, deep open pits, substandard ore, truck-rail transportation, transfer station, screening, productive fractions.
For citation
Cheban A.Yu. Ensuring Flexible Quality Management of Mineral Raw Materials Separated from Substandard Ores During Their Transportation by Combined Transport Systems. Vestnik Magnitogorskogo Gosudarstvennogo Tekhnicheskogo Universiteta im. G.I. Nosova [Vestnik of Nosov Magnitogorsk State Technical University]. 2026, vol. 24, no. 21, pp. 23-30. https://doi.org/10.18503/1995-2732-2026-24-2-23-30
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