Yavuz Ali Topkaya

E-mail

topkaya@metu.edu.tr

Department

Department of Metallurgical and Materials Engineering

Recovery of Iron from Turkish and Iranian Red Muds Eray, Said; Keskinkılıç, Ender; Topkaya, Yavuz Ali; Geveci, Ahmet (2022-01-01) Turkish and Iranian red mud samples of different composition and mineralogy were processed by solid-state reduction followed by wet magnetic separation and smelting, two commonly used pyrometallurgical methods for iron rec...
Reduction behavior of iron in the red mud Eray, S.; Keskinkilic, E.; Topkaya, Yavuz Ali; Geveci, Ahmet (2021-01-01) Red mud or bauxite residue contains significant quantities of industrial metals such as Fe, Al, and Ti, as well as rare earth elements such as Sc, Ce, and La. The authors performed a laboratory-scale project dealing with s...
USE OF COLEMANITE IN FERRONICKEL SMELTING KESKİNKILIÇ, ENDER; Pournaderi, S.; Geveci, Ahmet; Topkaya, Yavuz Ali (2019-01-01) Use of colemanite in metal-slag systems aims primarily to decrease the viscosity of slag and, therefore, achieve better metal-slag separation. Enhanced metal-slag separation is helpful to decrease the number of suspended m...
Smelting Studies for Recovery of Iron from Red Mud KESKİNKILIÇ, ENDER; Pournaderi, Saeid; Geveci, Ahmet; Topkaya, Yavuz Ali (2019-01-01) Red mud can be regarded as a by-product of aluminium extraction process since it contains a significant amount of iron and some valuable elements. Therefore, the treatment of red mud has been a hot topic for some decades. ...
Solvent extraction behaviour of scandium from lateritic nickel-cobalt ores using different organic reagents Ferizoglu, Ece; Kaya, Serap; Topkaya, Yavuz Ali (2018-04-01) Scandium is one of the most important and strategic metals that can be recovered as a by-product from lateritic nickel-cobalt ores. In this research, different extractants were investigated to extract scandium from sulphat...
Laboratory-scale smelting of limonitic laterite ore from Central Anatolia Pournaderi, S.; KESKİNKILIÇ, ENDER; Geveci, Ahmet; Topkaya, Yavuz Ali (2017-07-01) The feasibility of ferronickel production from a low-grade limonitic laterite ore was investigated. The ore was first calcined and then prereduced in the solid state. The reduced ore was then smelted to produce ferronickel...
Volume combustion and mechanochemical syntheses of LaB6 Akgun, Baris; Sevinc, Naci; ÇAMURLU, HASAN ERDEM; Topkaya, Yavuz Ali (2017-01-01) LaB6 powder was produced by volume combustion synthesis (VCS) and mechanochemical synthesis (MCS) methods, through magnesiothermic reduction of La2O3 and B2O3 powders. VCS was achieved by rapid heating of the reactant mixt...
Solvent extraction of scandium from lateritic nickel- cobalt ores using different organic reagents Ferizoglu, Ece; Kaya, Serap; Topkaya, Yavuz Ali (2016-09-28) Scandium is the most important and strategic metal that can be recovered as a by-product from lateritic nickel-cobalt ores. In this research, different extractants were investigated in order to extract scandium from a sulf...
Effects of Some Additives on Copper Losses to Matte Smelting Slag RÜŞEN, AYDIN; Geveci, Ahmet; Topkaya, Yavuz Ali; Derin, Bora (2016-09-01) Copper is lost to slag between 0.7 and 2.3 wt.% during the industrial copper matte smelting stage. In the present study, the aim was to minimize these losses in the slag phase by adding some fluxing agents like CaO, B2O3 a...
Investigation of Copper Losses to Synthetic Slag at Different Oxygen Partial Pressures in the Presence of Colemanite RÜŞEN, AYDIN; Derin, Bora; Geveci, Ahmet; Topkaya, Yavuz Ali (2016-09-01) Copper losses to slag are crucial for copper matte smelting and converting stages. One factor affecting the copper losses to slag during these processes is partial pressure of oxygen. In this study, theoretical and experim...

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