The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 25, 1984
Filed:
Mar. 21, 1983
Tomio Suzuki, Kobe, JP;
Setsuo Tamura, Nishinomiya, JP;
Kozo Tanaka, Miki, JP;
Ryoichi Hirose, Kobe, JP;
Hiroyuki Komatsu, Kobe, JP;
Shinichi Tamada, Himeji, JP;
Taketsugu Kasai, Kobe, JP;
Keisuke Tanimoto, Fujiidera, JP;
Kobe Steel, Limited, Kobe, JP;
Abstract
A method for injecting a pulverized fuel into a blast furnace uses a pulverulent fuel injecting burner which is protruded into a blow pipe through a wall thereof near the tuyere of a blast furnace. The burner injects a pulverized fuel into the blast furnace along with a hot blast of air at a temperature higher than 950.degree. C. flowing through the blow pipe. The tip end of the burner is located at a distance L between 100 and 350 mm upstream from the boundary between the tuyere of the blast furnace and the blow pipe. According to one embodiment, the tip of the furnace is tapered by an angle .theta..ltoreq.1400L.sup.2 -1290L+295. According to a second embodiment, the inner diameter B.sub.1 of the blow pipe, and the inner and outer diameters of the burner tip (d and D) are selected such that 0.1.ltoreq.(D/Bi).ltoreq.0.25 and 0.6.ltoreq.(d/D).ltoreq.0.8. According to a third embodiment, the burner tip is removable.