Title: Powder composition for castable refractory and premixed material comprising the same, method for applying premixed material and refractory hardened product therefrom
Application Number: 03814709 Application Date: 2003.06.30
Publication Number: 1662472 Publication Date: 2005.08.31
Approval Pub. Date: 2007.04.04 Granted Pub. Date: 2007.04.04
International Classifi-cation: C04B35/66
Applicant(s) Name: Taiko Refractories Co., Ltd. Address:
Inventor(s) Name: Oba Jun;Tanaka Kunio;Takahashi Nobuyuki;Fujisaki T
Attorney & Agent: wang huimin
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.
Time: 8