Thermodynamic analyses performed in the present work show that the process of the water vapour oxidation of molybdenum sulphide concentrates can be efficient. The calculations indicate a temperature of 900-1000uC and a mass ratio of water vapour to concentrate (H 2 O/MoS 2 ) of 6-8 as the optimum conditions for complete desulphurisation of molybdenum concentrate with the recovery of entire molybdenum and rhenium in the solid product and selenium and tellurium in the gas phase.
The oxidation of molybdenum sulphide concentrate by water vapour at high temperatures has been investigated experimentally. The progress of the reaction was followed by a thermogravimetric analysis unit and the exit gas was analysed to determine its composition. The conditions under which the water vapour oxidation process takes place without forming volatile molybdenum oxides have been determined.
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