Practice of Solving the Blockage of Grate Bars of 360 m~2 No.3 Sinter Machine of Shougang Qian’an Iron and Steel Co.
XU Huiru;LI Chao;ZHU Wang;ZHOU Jianfeng;Beijing Shougang Co., Ltd;
360 m~2 No.3 Sinter Machine of Shougang Qian'an Iron and Steel Co. was put into production in January 2021 and has been running for 9 months. There is a problem that the grate bars have serious blockage, which leads to poor air permeability during the sintering process, seriously restricting the improvement of output and the stability of quality. By sampling and testing the material that blocks the grate bars, the reasons for the grate bar blockage are analyzed, and measures of increasing the temperature of the mixed ores, optimizing the sizes of the hearth layer, controlling the sintering end point, stabilizing the gas-ash ratio, and centrally cleaning the blocked grate bars are taken and the problem of grate bar blockage has been effectively solved, which reduces the labor intensity of employees.