Research on the drop strength of coal powder in hot air dense medium fluidized bed

Abstract

In this paper, the drop strength of pulverized coal in a hot air dense medium fluidized bed was studied, and the influence of factors such as coal surface moisture, drying temperature, drying time, air volume and other factors on the drop strength were investigated, and the mathematical correlation of the drop strength was established; it shows that with the increase of drying time, the fall intensity of coal decreases; as the drying temperature rises, the fall intensity decreases; as the surface moisture of coal increases, the coal fall intensity decreases; as the air volume increases, the coal fall intensity decreases.