Materiais refratários comuns em fornos de vidro apresentam

A produção de vidro é uma indústria de alta temperatura, e o vidro derretido pode corroer os materiais refratários na piscina do forno. Devido à influência da alta temperatura, chamas, e materiais voadores, once the refractory materials are corroded and damaged, the life of the melting furnace will be affected. If the glass liquid is contaminated, it will also seriously affect the quality of the glass. Portanto, the refractory materials used in glass furnaces need to be strictly selected.

Four common refractory materials for glass furnaces

The refractory materials in glass kilns can be divided into fused cast refractory materials, sintered refractory materials, amorphous refractory materials, and insulating refractory materials.

1. Fused-cast refractory materials have excellent resistance to glass liquid erosion and alkali vapor erosion and are furnace-building materials for key parts of melting furnaces. Fused-cast refractory materials are mainly made by casting raw materials after melting in an electric furnace, and then annealing and machining. Its microstructure is more uniform than that of general refractory materials.

2. Sintered refractory materials are important supporting refractory materials used in large quantities in melting furnaces. Common varieties include silica bricks, alkaline bricks, zircon bricks, zircon mullite bricks, tijolos de mulita, sillimanite bricks, high-alumina bricks, clay bricks, etc..

3. The amount of amorphous refractory materials currently accounts for only 3% to 4% of the amount of refractory materials in melting furnaces, but it is very important for the age of melting furnaces. Generally, amorphous refractory materials should use the same material as fixed materials. Portanto, the common varieties have the same composition as their corresponding fixed refractory materials.

4. Insulating refractory materials require low density, baixa condutividade térmica, bom efeito de isolamento térmico, high refractoriness and mechanical strength, and do not react with contacting refractory materials. Commonly used insulating refractory materials include lightweight insulating bricks, insulating boards and insulating (lightweight) castables, insulating coatings, e refractory fibers.