The performance and use difference of silicon brick and semi-silicon brick
Semi-silica brick is a semi-silica brick produced by pyrophyllite as the main raw material, and the refractoriness is greater than 1700℃. It has good thermal shock resistance, can withstand the impact of steel slag and metal, and has strong creep resistance.
Silicon brick belongs to a variety of acid refractory materials, has a strong resistance to acid slag or acid melt erosion ability, the resistance to alkaline substances erosion is very poor, and the expansion coefficient of silicon brick is very large. The volume of silicon brick is stable in this interval above 300 ° C to close to the melting point, and when heated to 1450 ° C, it will produce 1.5% to 2.2% volume expansion.
