US Patent Issued to JFE Steel on March 25 for "Method of heating up furnace bottom, and burner lance used in the method" (Japanese Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,184, issued on March 25, was assigned to JFE Steel Corp. (Tokyo).

"Method of heating up furnace bottom, and burner lance used in the method" was invented by Yohei Kitamura (Tokyo), Yasukazu Hayasaka (Tokyo), Katsunori Kikuchi (Tokyo), Hiroki Yamaguchi (Tokyo), Satoshi Maruyama (Tokyo) and Kouji Uchimura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of heating up a furnace bottom and a burner lance used in the method are proposed. The method of heating up the furnace bottom includes a step of opening, in the tap hole, a burner lance insertion hole having a diameter larger than a diameter of the burner lance so as to penetrate into t...