Numerical Simulation on Solution Residence Time in Air-Agitated Seed Precipitation Tank in Industrial Production of Alumina

The residence time of solution has a significant influence on the process of reaction in industrial production of alumina. In this paper, the numerical calculation on residence time is adopted based on the simulation on flow flied of air-agitated seed precipitation tanks with different structure. The validity of mathematic model is proved by model experiment. The calculation result shows that the residence time of solution in the optimized tank is longer than that of in traditional tank, and it is helpful to prompt the alumina’s output in seed precipitation tank with new structure.