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Microporous Calcium Silicate Insulation Material

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Calcium silicate, also known as microporous calcium silicate, refers to a porous thermal insulation material made from the CaO-SiO2-H2O ternary system. It is a new type of thermal insulation material. In the CaO-SiO2-H2O system, there are currently 22 known minerals. However, there are only two types of thermal insulation materials widely used in industry, namely Xonotlite and Tobermorite. The chemical formula of the former is close to 6CaO·6SiO₂·HO. The chemical composition of its actual product is as follows: SiO2 46.3%, Al2O3 0.3%, CaO 43.3%, MgO 0.7%, Fe2O3 2.5%, and ignition loss 5.9%. The maximum operating temperature of this product is 1000℃. The chemical formula of Tobermorite is close to 5CaO·6SO₂·5H2O. The chemical composition of an actual product is as follows: SiO2 44.4%, Al2O3 3.7%, CaO 4.7%, MgO 0.6%, Fe2O3 1.8%, and ignition loss 13.8%. Tobermorite has a layered structure, and the interlayer distance of 11.3A is called 11ÁTobermorite, and the interlayer distance of 14Á i...
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What are the Performance Characteristics of Mullite Insulation Bricks?

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Mullite insulation bricks are high-alumina refractory materials with mullite (3Al₂O₃·2SiO₂) as the primary crystalline phase. Their alumina (Al₂O₃) content typically ranges from 65% to 75%, resulting in excellent high-temperature resistance and thermal insulation properties. They are available in three different bulk densities: 0.8 g/cm³, 1.0 g/cm³, and 1.2 g/cm³, suited to varying temperatures and operating conditions. Mullite Insulation Bricks Characteristics of Mullite Insulation Bricks  Excellent Thermal Insulation: Mullite insulation bricks have low thermal conductivity, effectively reducing heat loss, improving kiln insulation , and reducing energy consumption.  Low heat capacity, energy-saving and high efficiency. Due to its low thermal conductivity, this material stores less heat energy, making it particularly suitable for intermittent kilns (such as shuttle kilns), significantly reducing heating energy consumption and improving thermal efficiency.  High refracto...
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Wear-Resistant and Corrosion-Resistant Mullite Refractory Castable for Hazardous Waste Rotary Kiln

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For hazardous waste treatment rotary kilns, the composition of hazardous waste is complex and diverse. Among them, medical hazardous waste includes glass slides, infusion bottles, injection tubes, surgical residues, animal testing waste, etc. Therefore, the complexity of the chemical composition of hazardous waste is determined. Hazardous waste is generally burned in a rotary kiln at a temperature of 700 to 1000°C. Moreover, the main component of the gas after calcining hazardous waste is acidic. mullite castable for hazardous waste rotary kiln Working Conditions for Refractory Castable Lining of Hazardous Waste Rotary Kiln Among refractory materials, refractory bricks, and castables have good stability against acidic gases such as sulfuric acid gas and hydrogen chloride gas. However, when the operation is stopped and the temperature in the rotary kiln drops below the dew point, the corrosion caused by the acid needs to be considered. Among them, when the chlorine concentration exceeds...
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