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. 11, 1989
Filed:
Sep. 05, 1986
Tatsuhiko Shigematsu, Amagasaki, JP;
Minoru Ichidate, Amagasaki, JP;
Chitose Shiotani, Amagasaki, JP;
Yohzi Tozawa, Amagasaki, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A process for producing cold-bonded or non-fired iron ore which introduced as a charge into a blast furnace. The iron ore, which contains 10 to 70% of particles having a diameter ranging from 1 to 10 mm, is molded into a block, preferably by a pressure-molding method, a shock-molding method or a packing-molding method with vibrations. The block is then cured or hardened. This hardened block is crushed to have a predetermined shape. An additive such as CaO, Al.sub.2 O.sub.3, or MgO may be added to the iron ore to adjust the basicity as a whole to 0.8 to 2.0. Moreover, the molding step is conducted so that the product may have a void volume equal to or less than 25%.