The results of refractories

Acidic refractory silicon oxide as the main component , commonly used silica brick and clay . Silica brick containing 94% silica siliceous products, raw materials used are silica, silica brick scrap , with its strong acid slag corrosion resistance , high softening temperature under load , the volume does not shrink after repeated firing , even a slight expansion ; but its
vulnerability to erosion of basic slag , thermal shock resistanceis poor. Mainly used silica brick oven , glass melting furnaces , steel furnaces and other acidic thermal equipment . To fire clay brick as the main material containing 30% to 46 % alumina , is a weak acid refractory, thermal shock resistance, corrosion
resistance to acid slag has wide application .
Neutral alumina refractory oxide, chromium oxide or carbon as a main ingredient. Containing more than 95% of alumina corundum products is a wider use of high-quality refractory materials.
Chromium oxide as the main component of chromium slag bricks for good corrosion resistance , but poor thermal shock resistance , low temperature load deformation temperature . Carbon- carbon refractory bricks, graphite products and silicon carbide products, low coefficient of thermal expansion , high thermal conductivity , good thermal shock resistance , high temperature strength , resistance to acid and salt erosion, especially with a weak acid better resistance, metal and slag from wetting light . Widely used as a high-temperature furnace lining material , also used in petroleum, chemical autoclave liner.
Basic refractory magnesia , calcium oxide as the main component , is used magnesia brick . Magnesium containing more than 80 % to 85 % of the brickalkaline slag and iron slag has good resistance , high refractoriness than clay and silica brick . Mainly used for open-hearth , basic oxygen furnace , electric furnace, high temperature and non-ferrous metal smelting equipment and some equipment .