The present invention relates to a high-content magnesia-chrome refractory material for a sub-tank of a secondary refining furnace, comprising 55-66 wt% magnesium oxide (MgO), chromium oxide (Cr2O3) 25-35% by weight, aluminum oxide (Al2O3) 1-10% by weight, ferric oxide (Fe2O3) 2-11% by weight, silicon oxide (SiO2) 0.1-1.1% by weight and calcium oxide (CaO) 0.5-1.5% by weight, and it is possible to reliably reduce the breathability due to the size of the pores, which is the main cause of breakage of the refractory by the penetration of slag Chrome-refractory refractory for the lower furnace of a secondary refining furnace of excellent quality can be obtained.
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机译：本发明涉及一种用于二次精炼炉副罐的高含量镁铬耐火材料，其包括55-66重量％的氧化镁（MgO），氧化铬（Cr 2 O 3 ）25-35％重量的氧化铝（Al 2 O 3 ）1-10％重量的氧化铁（Fe < Sub> 2 O 3 ）2-11％重量，氧化硅（SiO 2 ）0.1-1.1％重量和氧化钙（CaO）0.5 -1.5重量％，并且由于孔的尺寸而可能可靠地降低透气性，这是由于炉渣的渗入而使耐火材料破裂的主要原因，对于二次精炼的下部炉子而言，铬耐火材料渗入。可以获得质量优良的熔炉。
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