Abstract：Through the study of the ladle covering process, the technology of the ladle covering with independent intellectual property rights and its operation were formed in Shougang Jingtang Company. After the ladle covering system put into practice, the running rate of the ladle covering was above 99.8% all the way. The ladle and package cover thermal state was good, the temperature of the steel slag was relatively high. Through the practical operation, it was showed that compared with an open operation, with the ladle covering process, the temperature of ladle bottom, wall and slag line can increase by about 200 ℃ on average, the average converter tapping temperature can decrease by 13 ℃, and the temperature drop from the end of the tapping to the start of the refining can reduced by 2.9 ℃. At the same time, the maximum using times of the ladle cover can be 1 800 times or more. In the aspect of saving energy and reducing consumption, the production cost was reduced, good effects were obtained in the improvement of the production, and about 32 million yuan can be saved for one year.
2017, Vol. 27 
