The fire resistance of zircon sand is one of the most important characteristics in industrial application, and its fire resistance temperature is usually between 2340℃ and 2750℃. This high refractoriness has many influences on the industrial application of zircon sand:

I. Foundry industry

Precision casting: The high refractoriness of zircon sand makes it an ideal mold material for precision casting. It can withstand the impact of high-temperature metal liquid, while maintaining good dimensional stability and surface smoothness. For example, in aerospace and automobile manufacturing, high-precision metal parts need to use zircon sand with high fire resistance to make molds.

Mold material: zircon sand containing 65%-66% ZrO is widely used as mold material for iron metal in foundry because of its high melting resistance. Its low thermal expansion and high thermal conductivity enable it to maintain good performance at high temperature.

II. Refractory materials

Refractory bricks: zircon sand is used to make refractory materials such as zircon bricks and zirconia corundum bricks, which have high melting temperature, good corrosion resistance and thermal shock resistance. They are widely used in glass kilns, cement kilns, ceramic kilns and metallurgical industries.

Refractory coatings: zircon sand can also be used to make refractory coatings, which can withstand extreme high temperatures and protect equipment from thermal shock and chemical erosion.

III. Ceramics and Glass Industry

Ceramic additives: zircon sand has become an important additive in ceramic industry because of its high refractoriness and chemical stability. It can improve the mechanical strength, wear resistance and thermal shock resistance of ceramic products.

Glass Kiln: In glass manufacturing, zircon sand is used to make refractories for glass kilns, such as zircon bricks and ramming materials. These materials can withstand the high temperature in the glass melting process and reduce the pollution to the glass melt.

IV. Other applications

Chemical Industry and Metallurgy: The high refractoriness of zircon sand makes it also have important uses in chemical industry and metallurgical industry. For example, in ferroalloy production, zircon sand can be used to make refractories to withstand high temperature and chemical erosion.

Special materials: zircon sand can also be used to produce special materials, such as zirconium compounds (zirconium dioxide, zirconium oxychloride, etc.), which are widely used in electronics, nuclear industry and other fields.

V. Influence of fire resistance on application

High-temperature stability: the high refractoriness of zircon sand ensures its stability in high-temperature environment and reduces the deformation and damage of the material.

Thermal shock resistance: its good thermal shock resistance enables it to remain intact under the condition of rapid temperature increase or decrease, and prolongs its service life.

Chemical stability: high fire resistance also means that zircon sand is not easy to react with the surrounding environment at high temperature, thus maintaining its properties.

In a word, the high refractoriness of zircon sand is an indispensable characteristic in many industrial fields, which provides reliable material support for various high-temperature processes.