MUMBAI, India, Aug. 22 -- Intellectual Property India has published a patent application (202517072492 A) filed by Jfe Steel Corporation, Tokyo, on July 30, for 'process control method, blast furnace operation method, molten-iron manufacturing method, and process control device and program.'
Inventor(s) include Yamato Genya; Hashimoto Yoshinari; Masuda Ryosuke; and Kizu Takeru.
The application for the patent was published on Aug. 22, under issue no. 34/2025.
According to the abstract released by the Intellectual Property India: "This process control method includes: a response prediction step of finding a predicted value for a prospective molten-iron temperature by utilizing a physical model with which the state of the interior of a blast furnace can be calculated; and an operational-control-level determination step of, if the absolute value of the difference between the predicted value for the molten-iron temperature found in the response prediction step and a target value is greater than or equal to a prescribed threshold value, finding a deviation between the predicted value for the molten-iron temperature and the target value, to find a pulverized coal ratio and an operational-control level for blown-air moisture content such that an evaluation function having a term corresponding to the deviation and a term for decreasing a reducing-material ratio or the blown-air moisture content is minimized or maximized, and if the absolute value is less than the prescribed threshold value, combining, in accordance with intention, two among pulverized coal ratio, blown-air moisture content, and blown-air temperature, to find an operational-control level such that the predicted value is maintained."
The patent application was internationally filed on Nov. 21, 2023, under International application No.PCT/JP2023/041872.
Disclaimer: Curated by HT Syndication.
