ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,688, issued on March 3, was assigned to Kobe Steel Ltd. (Kobe, Japan).
"Method for operation of blast furnace" was invented by Shoji Ikuta (Kakogawa, Japan) and Akito Kasai (Kakogawa, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for a blast furnace includes pulverizing coal to make pulverized coal, and pulverizing iron ore to make pulverized iron ore, and injecting the pulverized coal and the pulverized iron ore from a tuyere. A loss on ignition of the iron ore is greater than or equal to 9% by mass and less than or equal to 12% by mass, an injection rate of the pulverized coal is greater than or equal to 150 kg/tp, and an injection...