酒钢7号高炉低品位矿冶炼的应对措施  

Countermeasures for the Smelting with Low Grade Ore in JISCO No.7 BF

作　　者：刘国胜[1] 袁勇[1] LIU Guosheng;YUAN Yong(JISCO Hongxing Iron and Steel Co.,Ltd.,Jiayuguan 735100,Gansu,China)

机构地区：[1]酒钢集团宏兴钢铁股份有限公司,甘肃嘉峪关735100

出　　处：《炼铁》2024年第4期42-46,共5页Ironmaking

摘　　要：为降低生铁成本,酒钢7号高炉烧结矿配比由58%提高至70%,人炉品位由54%下降至51%。低品位矿冶炼条件下,高炉操作难度高,易导致初始煤气流分布失常,技术经济指标劣化。通过采取原燃料质量延伸管理、炉前出铁组织优化、下部送风制度及风口布局调整、上部装料制度调剂等措施,7号高炉实现长周期稳定顺行,炉缸活跃性未因人炉矿石品位降低而出现明显变化,完成了预期目标。认为,当原燃料质量下降后不宜沿用过去的管理模式,应及时降低治炼强度,炉况稳定后再逐步强化,同时也应统筹兼顾排碱、排锌工作。In order to reduce the hot metal production cost,the percentage of sinter charged to JISCO No.7 BF is increased from 58%to 70%,thus the charged ore gradechanges from 54%to 51%.The furnace operation becomes much more difficult while smelting under such condition,initial gas flow always distributes abnormally,and the techno-economic indicators becomes worse.Efforts are made to tackle these problems,such as extending the quality management of the raw material and fuel,optimizing the organization of tapping activities,and adjusting the blasting system,the tuyere size and charging system.The furnace achieves long-term stable and smooth running,the activity of the hearth is not affected greatly by the deterioration of the ore grade,obtaining the desired improvement.It is believed that the original management procedures should not be followed any longer when the quality of raw material and fuel declines,the smelting intensity should be weakened in time,and then restores gradually after the furnace condition becomes stable.Furthermore,the removal of basic metal and zinc should also be implemented accordingly.

关 键 词：高炉 低品位矿 烧结矿配比 炉况 生产操作 

分 类 号：TF54[冶金工程—钢铁冶金]