Quadratic programming for the multi-variable pre-homogenization and blending problem

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dc.authorscopusid6506350539
dc.contributor.authorKumral M.
dc.date.accessioned2024-08-04T19:59:13Z
dc.date.available2024-08-04T19:59:13Z
dc.date.issued2005
dc.departmentİnönü Üniversitesien_US
dc.description.abstractRaw material fed into a processing or refining plant is required to be uniform in composition for several reasons. When the mined ore is highly variable in quality the only way to ensure consistency is to homogenize the ore prior to the process. The problem is more complicated in the case of multiple ore sources. The idea behind the research is that theoretical blending ratios can serve not only to meet predefined specific criteria but also to reduce grade fluctuations of variables under consideration. In this paper, the problem is formulated as a quadratic programming problem, whose objective function is in quadratic form and constraints are linear. A case study was conducted on a data set from an iron orebody to demonstrate the technique. The objective was to minimize the blend variability in terms of each variable (in this study, iron, silica, alumina and lime) grade of ores extracted in three different production faces. The stockpile capacity, lower and upper limits of each variable satisfying operational requirements and non-negativity were constrained to the model. A modified simplex method developed by Wolfe was used for solving the blending and homogenization problem. The promising results can be used as a part of the stacking and reclaiming design. © The South African Institute of Mining and Metallurgy, 2005.en_US
dc.identifier.endpage322en_US
dc.identifier.issn0038-223X
dc.identifier.issue5en_US
dc.identifier.scopus2-s2.0-20444492828en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage317en_US
dc.identifier.urihttps://hdl.handle.net/11616/90468
dc.identifier.volume105en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.relation.ispartofJournal of The South African Institute of Mining and Metallurgyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBlending and homogenization problemen_US
dc.subjectQuadratic programmingen_US
dc.subjectWolfe methoden_US
dc.titleQuadratic programming for the multi-variable pre-homogenization and blending problemen_US
dc.typeArticleen_US

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