In the field of high-temperature industry, refractories play a vital role. They are the solid backing to ensure the normal operation of high-temperature equipment and prolong its service life. Silicon brick, as an important member of the refractory family, plays an irreplaceable role in many industrial scenes with its excellent performance and wide application.

I. Definition and main components of silica brick

Silicon brick, as its name implies, is mainly composed of silicon dioxide (SiO₂), and its content is usually between 93% and 96%. This high-purity siliceous material endows the silica brick with a series of excellent characteristics. Compared with ordinary building materials, silicon brick can keep the structure stable in extreme high temperature environment, and it is not easy to melt or deform, thus providing reliable protection for high temperature equipment.

II. Excellent performance of silicon brick

(1) High fire resistance

The fire resistance of silicon brick is extremely high, which can generally reach 1650℃-1710℃. This means that they can bear extreme heat load in the high-temperature industrial production process. For example, in glass melting furnaces, hot blast stoves and other equipment, silicon bricks can resist the erosion of high-temperature melt and flame and ensure the normal operation of the equipment.

(2) Good acid slag corrosion resistance.

In some smelting and chemical processes, slag with strong acidity will be produced. Because of its chemical stability, silicon brick can effectively resist the corrosion of these acidic slag, thus prolonging the service life of equipment. For example, in the process of non-ferrous metal smelting, silicon brick can prevent slag from corroding furnace wall and reduce equipment maintenance cost.

(3) Volume stability

Silicon brick has good volume stability at high temperature, and its thermal expansion rate is low. This means that in the long-term high-temperature use process, the size of silicon brick changes little, and the structural integrity of the equipment can be maintained. This is very important for some high-temperature equipment with high dimensional accuracy, such as tunnel kiln.

III. Application fields of silicon bricks

(1) Coke oven

In coking industry, silica brick is widely used in the bottom and wall of coke oven. Coke oven needs to withstand the double tests of high temperature and chemical corrosion in the production process, and the high refractoriness and corrosion resistance of silicon brick make it an ideal choice. It can effectively prevent the damage of the internal structure of the coke oven and improve the service life of the coke oven.

(2) Glass melting furnace

Glass production is a high-temperature melting process, and the glass melting furnace needs to use refractories to protect its internal structure. Silicon brick is widely used in various parts of glass melting furnace because of its good fire resistance and corrosion resistance. It can withstand the erosion of high-temperature melt, while maintaining the structural stability of the furnace and ensuring the continuity of glass production and product quality.

(3) Hot blast stove

Hot blast stove is an important equipment to provide high-temperature hot air in iron and steel production. Silicon brick can withstand the impact of high temperature flame in hot blast stove, while maintaining its structural integrity. Its good thermal stability is helpful to improve the thermal efficiency of hot blast stove and reduce energy consumption.

(4) Tunnel kiln

Tunnel kiln is a kind of continuous high temperature sintering equipment, which is widely used in the sintering process of ceramics, refractories and other industries. Silicon brick can withstand high temperature and chemical erosion in tunnel kiln, while maintaining the structural stability of kiln body. Its good volume stability is helpful to improve the service life of kiln body and reduce the maintenance cost of equipment.

IV. Quality Control, Packaging and Transportation of Silicon Bricks

(1) Quality control

The quality control of silicon brick is the key to ensure its performance and service life. Production enterprises usually adopt strict quality inspection procedures, including chemical composition analysis, physical performance testing and appearance inspection. For example, the silicon dioxide content, cold pressing strength, apparent porosity and other indicators of silicon bricks are accurately detected to ensure that each silicon brick meets strict quality standards.

(2) Packaging and transportation

In packaging, silicon bricks are usually packed in trays, fixed with PET tape and covered with plastic film. The standard export pallet size is 1000×1000mm, and the load capacity of each pallet is 1.5-2.0 tons. During transportation, the 20-foot container can load 24 tons of silicon bricks, and the 40-foot container can load 28 tons. This way of packaging and transportation helps to protect the integrity of silicon bricks during transportation and ensure their smooth arrival at their destination.

V. Future development trend of silicon brick

With the continuous development of high-temperature industry, the requirements for refractories are getting higher and higher. In the future, the development of silicon brick will develop towards higher fire resistance, better corrosion resistance and longer service life. At the same time, with the improvement of environmental protection requirements, the production process of silicon bricks will also pay more attention to energy saving, emission reduction and resource recycling.

In a word, silica brick, as an important member of refractory, plays an indispensable role in high temperature industry. Its excellent performance and wide application make it a reliable protector of high temperature equipment. With the continuous progress of technology, silicon brick will continue to play an important role in the future high-temperature industry, providing a solid guarantee for the stable operation and efficient production of high-temperature equipment.