What are commonly used refractories in glass melting kilns?

We may all be familiar with glass, which is something we often see in our life, but most people probably don't know how to make glass. Crystal glass is inorganic nonmetallic materials, usually with a variety of inorganic minerals such as quartz sand, borax, boric acid, barite, barium carbonate, limestone, feldspar, soda ash, etc.) as the main raw material, in addition to join a small amount of auxiliary material. Its main components are silicon dioxide and other oxides. Glass melting furnace refers to the thermal equipment used for melting glass mating materials in glass manufacturing. So the question is, in glass melting furnace this kind of high temperature heating equipment, what are commonly used?

The commonly used refractories in glass melting kilns are mainly divided into four categories: molten refractory, sintered refractory, amorphous refractory and heat insulation refractory.

refractory

Casting refractory: casting refractory has excellent corrosion resistance to glass liquid and alkali vapor erosion. It is a key part of melting furnace. Sintered refractory is one of the most important refractory materials used in melting furnace. Common varieties are silicon brick, alkaline brick, zirconium quartz brick, zirconium mullite brick, mullite brick, silica thread brick, high aluminum brick, clay brick, etc. At present, the amount of amorphous refractory only accounts for 3%~4% of the amount of refractory in the melting furnace, but it is very important for the kiln age. Generally, unshaped refractory materials should be made of the same material as fixed materials (such as cast refractory and sintered refractory). Therefore, the common varieties are similar to their corresponding components of shaped refractory. Heat insulation refractory refractory requirement density is small, low thermal conductivity, heat preservation effect is good, at the same time has high refractoriness and mechanical strength and mechanical strength, no contact with the reaction of refractory materials. The commonly used thermal insulation refractories are lightweight heat insulation bricks, heat insulation boards and heat insulation (light) castings, heat insulation coatings and refractory fibers.