ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,295, issued on Nov. 3, was assigned to JFE Steel Corp. (Tokyo).
"Method for charging raw materials into blast furnace" was invented by Kazuhira Ichikawa (Tokyo), Yasushi Ogasawara (Tokyo) and Takeshi Sato (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for charging raw materials into a blast furnace is as follows. The blast furnace includes a bell-less charging device that includes a plurality of main hoppers and an auxiliary hopper. The auxiliary hopper has a smaller capacity than the main hoppers. The method includes discharging ore charged in at least one of the plurality of main hoppers, and then sequentially charging the ore from ...