| 摘要 |
PURPOSE: An amorphous refractory composition containing carbon is provided, to improve the physical properties and the corrosion resistance by reducing the required water content compared with that of the carbon-containing amorphous refractory using the pulverized natural crystalline graphite. CONSTITUTION: The amorphous refractory composition containing carbon comprises a blending source material comprising 77-82 wt% of a magnesia clinker, 5-10 wt% of alumina super micropowder, and 3-8 wt% of the pulverized artificial graphite; and 1-2 wt% of alumina cement, 1-3 wt% of silica super micropowder, and 0.1 wt% or less of a phosphate salt as a binder. Preferably the pulverized artificial graphite has a volume density of 1.8 g/cm3 or more or is obtained by pulverizing the artificial graphite by-product generated in the preparation of high purity silica single crystal. More preferably the pulverized artificial graphite has a particle size of 0.025-0.5 mm.
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