鞍钢朝阳钢铁高炉风口内径向取样分析

 为了解炉内渣铁分布以及径向焦炭性能劣化状况,对朝阳钢铁公司1号高炉取样设备组成、现场安装以及风口内部径向取样过程进行了说明。对所取风口焦的成分、粒度组成、热态性能等进行检测,并对所取不同部位风口焦微观结构及石墨化程度进行分析,结果表明,1号高炉风口回旋区长度为1.7 m,风口焦平均粒度为16.12 mm,热态反应后强度为12.30%。对比鞍钢本部其他在产高炉,明显存在着回旋区长度偏短、风口焦粒度较小及热态性能较差等问题,焦炭性能较差是影响高炉稳定顺行的重要原因之一。

Analysis of radial sampling in tuyere at Chaoyang Iron and Steel blast furnace

In order to distribute slag and iron in furnace and deteriorate the performance of radial coke. The composition of sampling equipment, the field installation and the radial sampling process in the tuyere at the No.1 BF in Chaoyang Iron and Steel Company were described. The chemical composition, particle size and thermal performance of the tuyere coke were tested, and the microstructure and graphitization degree of the tuyere coke in different parts were analyzed as well. The results showed that the length of the tuyere raceway was 1.7 m, the average particle size of the tuyere coke was 16.12 m, and the strength of the tuyere coke after the thermal reaction was 12.30%. Contrasting with other BFs in Ansteel, some problems exist such as the shorter tuyere raceway, the smaller coke particle size and worse coke thermal properties. The poor performance of the coke is one of the main factors for the deterioration of the blast furnace operation.