料层减荷烧结支撑板数值模拟

在烧结台车上安装支撑板,可以支撑起上部烧结饼,减轻下部料层荷重,从而改善下部料层透气性,提高垂直烧结速度,进而提高烧结生产率.应用ANSYS软件对烧结过程中料层内支撑板的热应力进行模拟.结果表明:烧结过程中,支撑面中间部位和支撑板窄面中上部是最容易损坏的部位;排矿时,支撑板支脚部位产生应力集中,当支脚厚度大于40mm时可以满足要求.料层减荷烧结工业试验验证了模拟结果的正确性.

Numerical simulation of the stand in load-reduction sintering process

Upper sinter cakes could be supported by the stands installed on the pallets and the load of the lower bed was reduced. As a result the permeability of the lower bed was improved and the sintering velocity increased, moreover the produetivity of sintering was boosted. The thermal stress of the stand was simulated during sintering process with ANSYS software. The results revealed that during sintering process the middle of the supporting surface and the middle and upper zone of the narrow surface of the stand were most easily damaged. During discharging, stress concentration occurred at the feet of the stand. When the thickness of the feet was over 40 mm the stand worked safely. The validity of simulation results were proved by the industrial trial of load reduction sintering.