Title:
AGENT FOR MAINTAINING SURFACE TEMPERATURE OF MOLTEN STEEL AND METHOD FOR MAINTAINING SURFACE TEMPERATURE OF MOLTEN STEEL
Document Type and Number:
WIPO Patent Application WO/2011/071152
Kind Code:
A1
Abstract:
Disclosed is an agent for maintaining the surface temperature of molten steel, which is applied over the surface of molten steel that has a predetermined surface temperature. The agent for maintaining the surface temperature of molten steel contains two or more kinds of high melting point materials that have a melting point higher than the surface temperature of the molten steel, while containing 10-70% by mass of CaO, 10-60% by mass of Al2O3, 5-30% by mass of MgO and 0-10% by mass of SiO2 so that the total is not less than 70% by mass and the ratio of CaO to Al2O3, namely CaO/Al2O3 is 0.5-2.0. The agent for maintaining the surface temperature of molten steel has a melting point lower than the surface temperature of the molten steel, and is composed of a powder that contains particles having a particle diameter of 30-100 μm in an amount of not less than 70% by mass.
Inventors:
MIZOGUCHI TOSHIAKI (JP)
MIKI DAISUKE (JP)
UCHIYAMA NORIHIKO (JP)
MIKI DAISUKE (JP)
UCHIYAMA NORIHIKO (JP)
Application Number:
PCT/JP2010/072249
Publication Date:
June 16, 2011
Filing Date:
December 10, 2010
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
MIZOGUCHI TOSHIAKI (JP)
MIKI DAISUKE (JP)
UCHIYAMA NORIHIKO (JP)
MIZOGUCHI TOSHIAKI (JP)
MIKI DAISUKE (JP)
UCHIYAMA NORIHIKO (JP)
International Classes:
B22D1/00; B22D11/108; B22D7/10; B22D11/111; C21C7/00
Foreign References:
| JP2006218540A | 2006-08-24 | |||
| JPH10263768A | 1998-10-06 | |||
| JPH01317667A | 1989-12-22 | |||
| JPH06170507A | 1994-06-21 |
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
Masatake Shiga (JP)
Masatake Shiga (JP)
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