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Thermodynamic analysis of roasting process of molybdenum concentrate was conducted in the present work. The results show that the roasting reaction is an exothermic reaction. Once the reaction begins, it may occur spontaneously without any external heat source under industrial production conditions. It is revealed by thermal analysis experiment that higher oxygen concentration is more beneficial for...
In this paper, the thermal decomposition mechanism of carbide sludge was studied by thermogravimetric technique under pure N2 atmosphere and different heating rates. Iso-conversional method was used to determinate the activation energy value and the rules that the activity energy decreased along with the addition of conversion rate without proposing the mechanism function. And the kinetics triplets...
This paper analyzes the current energy utilization in typical heavy industry areas of China, and identified some gaps between China and developed countries. Based on the characteristics of heavy industrial cities in China and energy utilization value coefficient, this paper comprehensively adopts multi-objective programming and analytic hierarchy process (AHP) to optimize the cities' energy allocation...
Throated twin-oxidation zone gasifier of coal was exploited based on the characteristic analysis on the updraft gasifier and downdraft gasifier, and tar-free gasification of coal was experimentally investigated in the throated twin-oxidation zone gasifier. The effects of operational parameters, such as the ratio of grate air supplied gasifier by bottom to primary air (ng/np), the ratio of secondary...
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