济钢3200m^3高炉无料钟炉顶料面实测分析

Analysis on Measured Charge Levels of Jinan Steel's 3 200 m^3 BF with Bell-less Top

济钢3200m3高炉采用激光网格法进行了开炉装料实测,确定了料罐最大容积为66m3,中心加焦角度为14.5°,同时找出了排料速度和料流调节阀开度的关系,测定了料流轨迹和宽度、料面形状等,根据测量结果确定了开炉和正常生产时的布料参数。实践证明,开炉后料面形状合理,实现了高炉快速达产达效,煤气利用达到50.5%,燃料比510kg/t。

The measurement of charge distribution parameters of Jinan Steel＇ s 3 200 m^3 blast furnace was carried out with the laser-net technology. Then, identified max volume of the bucket is 66 m^3 and the central angle of coke charging is 14.5° . At the same time, the burden flow trajectory and width, the shape of charge level and the relation of charge flow rate and the opening of the regulating value were determined. So the distribution parameters of blowing-in and normal production were determined. Practices showed that the shape of charge level was reasonable and design production capacity was actualized quiekly. Also, gas utilization efficiency attained to 50.5% and the fuel ratio attained to 510 kg/t.