Abstract：In the protection stage, hearth activity is partly affected and hearth activation is the core work in daily operation. The main factors affecting the hearth activation were analyzed. By stabilizing the coke quality, adjusting the upper and lower parts to obtain two proper gas streams, maintaining the sufficient iron temperature and proper slag basicity, optimizing the tapping operation and maintaining proper titanium content, the hearth was active. The working condition of the hearth was improved, the high temperature peak of the hearth carbon brick was decreased gradually to a controllable range, the economic and technical indexes were properly recovered, and the safe production of blast furnace and recovery of technical indexes in the later stage of the campaign were realized.
郭其飞, 郝团伟. 马钢A高炉护炉阶段活跃炉缸实践[J]. 中国冶金, 2021, 31(7): 87-91.
GUO Qi-fei, HAO Tuan-wei. Practice of hearth activation in protection stage of a blast furnace in Masteel[J]. China Metallurgy, 2021, 31(7): 87-91.
2021, Vol. 31 
