Development and application of automatic control system for water content of sintering mixture
QIN Xue-gang1, SHI Jiang-shan2, LI Zhao-rong1, LI Tao1, XIE Xin1, LIU Ze-qian1
1. Institute of Automation, Beijing Shougang Automation and Information Technology Co., Ltd., Beijing 100041, China; 2. Ironmaking Department, Shougang Jingtang United Iron and Steel Company, Tangshan 063210, Hebei, China
Abstract：In the process of sintering, the water content of sintering mixture has crucial influence on the output and quality of sinter. The traditional control of water addition to sintering mixture takes the deviation between target water content and original water content of mixture as feedforward to adjust the water addition. This method only controls the water addition simply, and cannot accurately control the water addition according to the real-time deviation of water content in mixture and change of material type. To this end, an automatic control system for water content of sintering mixture was developed, which adopted the adjustment mode for combination of feedforward and backfeed and the backfeed control method for combination of infrared moisture meter and microwave moisture meter. Then dynamic tracking technology of raw fuel data was applied to realize the automatic control for water adding process of mixture. The fluctuation range of water content in mixture is control within ±0.15% of target water content, the accurate control of water adding amount in sintering mixture is realized, the quality and output of sinter are improved, and the economic and social benefits are remarkable.
秦雪刚, 石江山, 李昭蓉, 李涛, 谢鑫, 刘泽谦. 烧结混合料水含量自动控制系统开发与应用[J]. 中国冶金, 2022, 32(12): 72-77.
QIN Xue-gang, SHI Jiang-shan, LI Zhao-rong, LI Tao, XIE Xin, LIU Ze-qian. Development and application of automatic control system for water content of sintering mixture[J]. China Metallurgy, 2022, 32(12): 72-77.
2022, Vol. 32 
