US Patent Issued on Aug. 4 for "Blast furnace distributing device with nitrogen sealing structure" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,698,540, issued on Aug. 4.

"Blast furnace distributing device with nitrogen sealing structure" was invented by Yunfeng Ma (Chongqing, China), Shusheng Wang (Chongqing, China), Jun Zheng (Chongqing, China) and Wenjun Dai (Chongqing, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to an improved blast furnace distributing device with a nitrogen sealing structure which belongs to the field of blast furnace. The nitrogen sealing structure is divided into two functional areas on whole structure, wherein a labyrinth structure is arranged at position close to lower side of a blast furnace, which can achieve dustproof and dust falling ...