Acid refractory
September 21, 2020
Usually refers to refractory materials with high content of acid oxide such as SiO2. Such as siliceous, semi-siliceous, fused quartz and fused silica refractories. Levels of silica vary from country to country. The lower limit is usually between 65% and 80%. It is mainly composed of silicate or aluminum silicate and is a refractory material which is easy to produce salt under the action of high temperature and alkali.