Production Method For Magnesia Carbon Brick

Abstract: The present invention provides a magnesia carbon brick having excellent spalling resistance even with a low graphite content and also having excellent corrosion resistance. The present invention pertains to a production method for a magnesia carbon brick the production method comprising: adding pitch tar which is pitch diluted pitch obtained by diluting pitch with a solvent tar or diluted tar obtained by diluting tar with a solvent as a binder to a refractory raw material blend containing at least 85 mass% of magnesia and having a graphite content of at most 12 mass% (including 0); kneading the resultant in a warm state; and then molding the resultant in a warm state wherein the particle size constitution of the magnesia in the refractory raw material blend is such that the mass ratio of magnesia having a particle diameter of at least 1 mm to magnesia having a particle diameter of at least 0.075 mm and less than 1 mm is 0.2 1.5 and the mass ratio of magnesia having a particle diameter of at least 1 mm to magnesia having a particle diameter of less than 0.075 mm is at least 3.0.

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