Refractory Materials For Optical Glass Furnaces

Optical glass has many special properties such as high degree of transparency, specific optical constants, no bubbles, no stripes and no stones. The refractory selection is important for improving the service life of optical glass furnaces, ensuring the glass quality, reducing energy consumption and improving the melting rate. 

Optical glass has high requirement for refractory materials such as low impurity content, good corrosion resistance to molten glass, deformation temperature under load at high temperature and good thermal stability. Refractory materials for optical glass furnaces include fused cast refractories, sintered refractories, monolithic refractories and insulation materials, such as fused cast AZS, corundum brick, corundum mullite brick, mullite insulation brick, high alumina brick, fireclay brick, light weight high alumina brick and light weight fireclay brick. 

 

Fused cast AZS block is currently the most widely used fused cast refractory material. It has excellent corrosion resistance and can adapt to any glass composition. It consists of corundum, baddeleyite and glass phase. 

 

Corundum mullite brick has good high temperature resistance, good corrosion resistance and good thermal stability. It is suitable for high temperature kiln, platinum protective sleeve, and high temperature furnace construction materials. 

 

Mullite insulation brick has high temperature, high strength, low thermal conductivity and good energy efficiency. It is used in metallurgy hot stove, ceramic roller kiln, electric porcelain kiln drawer, optical glass melting furnace and a variety of electric furnace kiln lining. 

 

High alumina brick is a kind of neutral refractory. It has high compressive strength, good resistance to slag, good chemical stability and good corrosion resistance. It is widely used in high temperature furnaces and other thermal equipment. 

 

Zhengzhou Sunrise is a refractory material supplier from China, offering high quality refractory materials for glass furnaces, including fused cast AZS block, fused cast alumina block, fused cast high zirconia block, mullite brick, zircon brick, alumina bubble brick, magnesia brick, sillimanite brick, corundum brick, low porosity fireclay brick, high alumina brick, all kinds of glass furnace ramming masses, etc..