Non-isothermal Reduction Kinetics of Gördes Laterite in CO Atmosphere

The growing demand for nickel metal and the depletion of high-grade sulfide ore reserves have turned direction industry towards laterites which are not desirable as primary source due to their low Ni content more energy-intensive processing. Thus, alternative routes essential effectively processing these ores while reducing costs greenhouse gas emissions. Solid-state reduction followed by magnetic separation is an attractive option recovering in laterites. Hereby, this study analyzed non-isothermal kinetics laterite from Gördes (Manisa, Turkey) CO at different heating rates 20, 25, 30, 35, 45 ºC/min. activation energies were determined Friedman (FR), Kissinger-Akahira-Sunose (KAS), Flynn-Wall-Ozawa (FWO) methods, controlling mechanisms Malek interpretation Sestak-Berggren Equation. process was divided into three stages take place between "0 0.16", "0.16 0.45", "0.45 0.7" degrees respectively according kinetic analysis results. first stage be interface reaction controlled (with "Ea" 53 kJ/mol), second third mixed 126 kJ/mol 379 kJ/mol, respectively).