China Nonferrous Metallurgy

The rotating chute is an important component of the blast furnace burden distribution system. It can affect the speed and distribution of burden materials at the chute tip by changing chute angle and rotating speed, hence further impact the falling trajectory. In this work, we use the discrete element method to study the behavior of burden materials under different conditions including varying the chute structure, chute angle, and particle shape. The results demonstrate that the segregation can occur during the chute distribution process, and the chute angle of the chute has a great influence on the burden distribution. The larger the angle, the more stable the material flow; the larger the particle size, the greater the influence of the particle shape. The square shaped chute can effectively decease the width of the material flow, thereby achieving the effect of precise distribution. The addition of wear-resistant lining plates can also achieve the precise distribution to a certain extent.