Title:
MAGNESIA CARBON BRICK
Document Type and Number:
WIPO Patent Application WO/2014/119593
Kind Code:
A1
Abstract:
Provided is a new high-durability magnesia carbon brick with further improved density (reduced porosity). This magnesia carbon brick comprises a magnesia raw material and graphite and includes 8-25 mass% of graphite and 75-92 mass% of magnesia raw material in the total amount of magnesia raw material and graphite. As the particle size composition of the magnesia raw material, this magnesia carbon brick includes 35 mass% or more of magnesia raw material with a particle size of 0.075-1 mm in the total amount of magnesia raw material and graphite, and the mass ratio of magnesia raw material with a particle size of 0.075-1 mm with respect to the magnesia raw material with a particle size of less than 0.075 mm is 4.2 or more. Further, this magnesia carbon brick has an apparent porosity of 7.8% or less after three hours of reduction firing at 1400°C.
Inventors:
SHIOHAMA MICHIHARU (JP)
TANAKA MASATO (JP)
MATSUO YOSHINORI (JP)
YOSHITOMI JOUKI (JP)
TANAKA MASATO (JP)
MATSUO YOSHINORI (JP)
YOSHITOMI JOUKI (JP)
Application Number:
PCT/JP2014/051900
Publication Date:
August 07, 2014
Filing Date:
January 29, 2014
Export Citation:
Assignee:
KROSAKIHARIMA CORP (JP)
International Classes:
C04B35/043
Foreign References:
| JP2007076980A | 2007-03-29 | |||
| JP2008151425A | 2008-07-03 | |||
| JP2011184217A | 2011-09-22 | |||
| JPS60264358A | 1985-12-27 | |||
| JPS58208173A | 1983-12-03 | |||
| JPH08259340A | 1996-10-08 | |||
| JP2010105891A | 2010-05-13 | |||
| JPH0270564A | 1990-03-09 | |||
| JP2007297246A | 2007-11-15 |
Other References:
FUMINORI HIROSE ET AL.: "Influence of Distribution of Al Additive on Properties of MgO-C Refractories", REFRACTORIES, vol. 62, no. 7, 1 July 2010 (2010-07-01), pages 339 - 345, XP008180049
KOICHI SHIMIZU: "Kakushu Hoso Kagobutsu ga MgO- C Renga no Hinshitsu Tokusei ni Oyobosu Eikyo", REFRACTORIES, vol. 65, no. 1, 1 January 2013 (2013-01-01), pages 24 - 25, XP008180048
See also references of EP 2952494A4
KOICHI SHIMIZU: "Kakushu Hoso Kagobutsu ga MgO- C Renga no Hinshitsu Tokusei ni Oyobosu Eikyo", REFRACTORIES, vol. 65, no. 1, 1 January 2013 (2013-01-01), pages 24 - 25, XP008180048
See also references of EP 2952494A4
Attorney, Agent or Firm:
EIWA PATENT FIRM (JP)
Patent business corporation English-Japanese patent firm (JP)
Patent business corporation English-Japanese patent firm (JP)
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