Keskinkilic,E.Pournaderi,S.Geveci,A.Topkaya,Y.A.Metallurgical and Materials Engineering2024-07-052024-07-0520132978-111860569-110.1002/9781118663448.ch552-s2.0-84876499311https://doi.org/10.1002/9781118663448.ch55https://hdl.handle.net/20.500.14411/3713Energy Comm. Extr. Process. Div. Miner., Metals Mater. Soc. (TMS); Pyrometallurgy CommitteeIn the current work, laboratory-scale smelting experiments were conducted using Sivrihisar laterites (1.26% Ni). The ore samples previously subjected to drying, calcination and prereduction stages were smelted in alumina crucibles in a horizontal tube furnace under argon atmosphere. For the smelting system used in the present work, 1550°C and 40 minutes were determined to be the optimum smelting temperature and time, respectively. 25% excess coal addition in prereduction stage was reported to be crucial to obtain the desired Ni content in the final product. Colemanite in calcined form has long been known as a flux used in pyrometallurgical systems such as steelmaking and copper matte-smelting. To investigate the effects of calcined colemanite addition on the ferronickel metal-slag system, calcined colemanite of 2% and 4% of the total metal and slag weight was charged as a flux and smelted under the optimum conditions described above.eninfo:eu-repo/semantics/closedAccessFerronickelLateriteSmeltingConference Object453460