MUMBAI, India, Oct. 26 -- Intellectual Property India has published a patent application (202617091578 A) filed by Jfe Steel Corporation on July 28, 2026, for Method For Controlling Return Ore Rate, Method For Manufacturing Sintered Ore, And Return Ore Rate Control Device.

Inventors include Yasuhara Satoki; and Hashimoto Yoshinari.

The application for the patent was published on October 23, 2026, under issue no. 43/2026.

Abstract: Provided is a return ore rate control method for controlling a sintering process executed in a facility that includes a sintering machine and a cooler, on the basis of a predicted value of a return ore rate predicted using a return ore rate prediction model in which at least data related to the cooler is used as an explanatory variable and the return ore rate is used as an objective variable, the return ore rate control method comprising: an acquisition step (S1) for acquiring a target value of the return ore rate and input data of the return ore rate prediction model including data related to the cooler, in consideration of a delay time based on a timing at which the return ore rate can be identified; a return ore rate prediction step (S2) for predicting the return ore rate using the input data and the return ore rate prediction model; and an operation amount calculation step (S3) for calculating an operation amount of an operation variable for the sintering process so as to reduce the deviation between the predicted value and the target value of the return ore rate.

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