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The reduction behavior of a leach residue containing hematite (Fe 2 O 3 ), nickel ferrite (NiFe 2 O 4 ) and a small amount of siliceous gangue was studied using thermogravimetric (TG) and differential thermal analysis (DTA) techniques. Carbon monoxide and graphite were used as reductants and a wide range of temperatures were covered. Both non-isothermal reduction (15°C/min)...
The oxidation mechanism of nickel concentrate from ambient up to 1000°C was investigated by thermogravimetric (TG) and differential thermal analysis (DTA) to improve the understanding of the oxidation behavior of the nickel concentrate during industrial roasting. The reaction products at intermediate temperatures were analyzed by X-ray powder diffraction (XRD), SEM/EDS, electron probe micro-analysis...
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