... porosity, compressive strength, bulk density, heat shock stable and so on.2. Alkalinity refractory product taxonomic approach The ... , silicon brick, magnesia brick, magnesium chromium brick, carbon block and so on;b. According to refractoriness classification, The ordinary ... melt refractory brick;e. According to size and brick classification, Sign; Pu and heterogeneous type;f. According to purpose ...