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:
Sep. 13, 2011
Filed:
Sep. 29, 2008
Jun Oba, Kitakyushu, JP;
Kunio Tanaka, Kitakyushu, JP;
Nobuyuki Takahashi, Kitakyushu, JP;
Takashi Fujisaki, Kitakyushu, JP;
Jun Oba, Kitakyushu, JP;
Kunio Tanaka, Kitakyushu, JP;
Nobuyuki Takahashi, Kitakyushu, JP;
Takashi Fujisaki, Kitakyushu, JP;
Taiko Refractories Co., Ltd., Fukuoka-Ken, JP;
Abstract
A premixed material is obtained by tempering a castable refractory powder composition comprising refractory aggregate, fine refractory powder, alumina cement, a dispersing agent and an alumina cement hydration stopper with water. The hydration stopper is acidic in a state of an aqueous solution. The amount of the hydration stopper is controlled such that the premixed material has a pH of 2 to 7. Immediately after adding and mixing an alumina cement hydration starter to the premixed material, the resultant mixture is cast into a mold. The addition of the hydration starter can be carried out 5 days or more after the production of the premixed material.