What is a fused silica brick refractory brick? It is a high-quality refractory brick that is water-cooled at 1100 ℃ for more than 50 times and has no cracks at all. Please see the detailed introduction below.
Fused silica bricks are produced by melting natural high-purity silica in an electric furnace at a temperature above 1760 °C, followed by rapid cooling. It is a typical glass, and its atomic structure is long-range disordered. It offers its high service temperature and low thermal expansion coefficient through three-dimensional structural cross-linking. During the melting process, the crystalline silica is converted into an amorphous glass melt.
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The melting temperature of fused silica brick is about 1713 °C, the thermal conductivity is low, and the thermal expansion coefficient is almost the smallest among the currently applicable refractories, so it has good thermal shock stability.
Fused silica ceramics, also known as quartz glass ceramics or fused silica sintered materials, are also called quartz ceramics sintered body.
Quartz ceramics also have a good advantage, that is, its strength increases greatly with the increase of temperature below 1100 °C, and its strength can increase by 33% from room temperature to 1100 °C. The main use is as a refractory material and a structural material that can resist rapid temperature changes at moderate temperatures.
According to the different conditions of use, materials with different fused silica contents can be manufactured, and the raw materials of fused silica bricks can be compounded with many kinds of materials. It is made by the refractory material R&D engineer of the group headquarters after several batching research and development according to the needs of customers. This material is a high-quality refractory brick produced by using purified fused silica.
At present, fused silica bricks can replace silica bricks and are used for the partition walls of carbonization chambers and combustion chambers of coke ovens, regenerators and slag chambers of steel-making open-hearth furnaces, soaking furnaces, refractory materials of glass melting furnaces and firing of ceramics Vaults and other load-bearing parts of kilns and other kilns. Fused silica is characterized by good acid resistance, good thermal shock, and good thermal conductivity under all conditions of the same bulk density! At present, silica bricks and other products cannot achieve this effect.
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Fused silica brick is a newly developed high-quality refractory brick. It is a replacement product of silica brick. It has excellent thermal shock resistance! Operating temperature: below 1200℃, under the working conditions that require thermal shock resistance, this product is suitable for use in an acidic atmosphere.
Zhengzhou Shennan Refractory Co.,Ltd are professional in producing high quality fused silica bricks , any demands,please don't hesitate contact with me.
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+86-15238007351 |
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+86-371-86039318 |
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