USE OF COLEMANITE IN FERRONICKEL SMELTING

  • Ender Keskinkiliç Metallurgical and Materials Engineering Department, Atilim University, Ankara, Turkey
  • S. Pournaderi Agri Ibrahim Cecen University, Agri, Turkey
  • A. Geveci Metallurgical and Materials Engineering Department, METU, Ankara, Turkey
  • Y. A. Topkaya Metallurgical and Materials Engineering Department, METU, Ankara, Turkey

Abstract


Use of colemanite in metal-slag systems aims primarily to decrease the viscosity of slag and therefore to achieve better metal-slag separation. Enhanced metal-slag separation is helpful to decrease the number of suspended metal/alloy droplets in slag, i.e. the physical losses. In the literature, successful use of colemanite was reported both in steelmaking and copper matte smelting processes. Ferronickel smelting slags contain nickel in the range of 0.1-0.2% and correspondingly, metal-slag distribution ratio values of nickel are reported even above 200. On the contrary, nickel recoveries are hard to exceed 95%. This can be mostly attributed to the physical losses of nickel due to very high slag volume in ferronickel smelters; for 1 ton of ferronickel, 10-15 tonnes of slag are generated regardless of the type of the laterite, which contains significant quantity of gangue components. The authors thought that use of  colemanite could be a solution to decrease physical losses. Therefore, the use of colemanite in ferronickel smelting was investigated in the present work. Laboratory-scale smelting experiments were conducted using calcined and prereduced laterites in a vertical tube furnace under different gas atmospheres. The amount of colemanite added was in the range of 0 - 2.5% of the total charge. The experiments were also performed using ferronickel and slag samples obtained from a ferronickel smelter.

Author Biography

Ender Keskinkiliç, Metallurgical and Materials Engineering Department, Atilim University, Ankara, Turkey

Ender Keskinkilic earned his undergraduate degree from the Department of Metallurgical and Materials Engineering of Middle East Technical University (METU), Ankara (the capital city of Turkey) in 1999. He continued M.S. and Ph.D. studies in the same department. He worked as a research assistant in METU between 1999 and 2003. After receiving the master’s degree in 2001, he progressed further in the field of extractive metallurgy. During the Ph.D. period, he moved to Eregli-Zonguldak in 2003 and he worked in Quality Metallurgy & RD Department of Eregli Iron and Steel Works Co. (ERDEMIR), which is the leading steel company in Turkey regarding the qualities produced and the production capacity. After earning his Ph.D. degree in 2007, he returned to university and to work in the Department of Metallurgical and Materials Engineering of Atilim University, Ankara, in 2008. He has been working as a faculty in Atilim since then. He was assistant professor between 2009 and 2014. He has been working as an associate professor since 2014. His primary field of interest is extractive metallurgy and more specifically pyrometallurgical processes such as iron- and steelmaking, ladle metallurgy, ferroalloy production, and nonferrous extractive metallurgy. He has been acting as the chairman of the Department of Metallurgical and Materials Engineering of Atilim University since July 2018.

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Published
2019/04/17
How to Cite
Keskinkiliç, E., Pournaderi, S., Geveci, A., & Topkaya, Y. A. (2019). USE OF COLEMANITE IN FERRONICKEL SMELTING. Journal of Mining and Metallurgy, Section B: Metallurgy, 55(1), 1. Retrieved from https://aseestant.ceon.rs/index.php/jmm/article/view/19115
Issue
Vol. 55 No. 1 (2019)
Section
Original Scientific Paper

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