clay bricks

Sillimanite is a natural high-grade refractory mineral with the characteristics of low thermal expansion, resistance to corrosion by metallurgical slag and various glass liquids, and good high-temperature wear resistance. Its physical and chemical properties are better than those of high-alumina bricks, with a refractoriness of 1770-1830℃ and a load softening starting point of 1500-1650℃. It is mainly used for the forming of flow holes in glass tank kilns, blast furnace linings, furnace throats, and ceramic industrial kiln furniture. Refractory materials based on natural sillimanite also have these advantages. Therefore, sillimanite refractory materials are widely used in metallurgy, chemical industry, building materials and other industries.

Silicon bricks, also known as silica bricks or silicon carbide bricks, are a type of refractory material commonly used in glass kilns and other high-temperature applications. They are made primarily from silica (SiO2), which is a key component of sand and quartz.

Fire Clay Insulation Brick generally have an Al2O3 content of over 40% and an Fe2O3 content less than 2.0-2.5%. The raw material mixture consists of 65-85% clinker and 35-15% bonding clay. The crushed bonding clay and finely ground clinker are mixed and milled together, then formed under high pressure to produce a semi-dry mud. This mixture is fired at around 1400°C, resulting in good performance. Clay bricks exhibit a weak acidic nature at high temperatures and have a slightly lower resistance to alkaline slag erosion, but this ability improves with higher Al2O3 content. They have better thermal stability compared to silica bricks and magnesia bricks.

Clay bricks generally have an Al2O3 content of over 40% and an Fe2O3 content less than 2.0-2.5%. The raw material mixture consists of 65-85% clinker and 35-15% bonding clay. The crushed bonding clay and finely ground clinker are mixed and milled together, then formed under high pressure to produce a semi-dry mud. This mixture is fired at around 1400°C, resulting in good performance. Clay bricks exhibit a weak acidic nature at high temperatures and have a slightly lower resistance to alkaline slag erosion, but this ability improves with higher Al2O3 content. They have better thermal stability compared to silica bricks and magnesia bricks.

It is mainly used in high-temperature areas such as the top of the blast furnace hot blast furnace, the upper furnace body and the upper grid body.