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:
Jul. 07, 1992
Filed:
Apr. 01, 1991
Takeshi Sugiyama, Hyogo, JP;
Shoji Shirouchi, Hyogo, JP;
Kunihiko Tokutake, Kakogawa, JP;
Mitutoshi Isobe, Hyogo, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
Disclosed herein is a self-fluxing pellet to be charged into blast furnace, the pellets containing open pores of diameters larger than 5 .mu.m in an amount greater than 0.045 cm.sup.3 /g. Calcium.ferrite structures with a thickness of 100 .mu.m or greater exist around pores of diameters larger than 5 .mu.m including the open pores. The self-fluxing pellets as a whole has a CaO/SiO.sub.2 value higher than 0.8. For forming the self-fluxing pellets, at least one of coarse dolomite and limestone having a particle size of 44 .mu.m-1 mm is added as a pellet material to powdery iron ore. The green pellet formed from the resulting powdery mixture are sintered at a temperature of 1220.degree. C.-1300.degree. C. to have a CaO/SiO.sub.2 value higher than 0.8 after sintering.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile