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Erschienen in:
01.10.2008 | Communication
Thermodynamic Considerations in Reduction of Nickeliferrous Laterite by Methane
Erschienen in: Metallurgical and Materials Transactions B | Ausgabe 5/2008
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Abstract
Efforts have been made to replace carbon-rich reductants such as coke and coal used for reduction of nickeliferrous Laterite ores by hydrogen. This, however, makes the process expensive because of the price of hydrogen. Methane is a potential reductant, which has not been studied for reduction of nickeliferrous Laterite ores. The thermodynamic feasibility of using methane as a reductant has been studied. These studies indicate that methane exhibits a good reduction potential at around 873 to 1073 K for nickel Laterite. The experimentally observed phases in the unreduced sample form the basis for calculating equilibrium data based on the principle of free-energy minimization.