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Abstract

In order to improve the conversion rate of vanadium in the calcined materials in the rotary kiln, the burner of the rotary kiln was optimized and the distribution of temperature field in the rotary kiln was visualized. In this paper, based on finite element method, the optimum design of burner is simulated numerically, and the weak form of fluid heat transfer equation is derived. COMSOL multi-physics simulation software is used to simulate the combustion of the nested burner. The results show that the high temperature zone of the rotary kiln is within 10m of the burner axis. Finally, the burner is designed to make the combustible gas injected into the rotary kiln with wider coverage and more uniform distribution of temperature field, so that the contact area between gas fuel and material is maximum, thus improving the conversion rate and extraction rate of vanadium, while consuming less combustible gas and saving gas fuel.