Aluminum silicate fiber
Aluminum silicate fiber is a new, lightweight, and energy-saving refractory material. It is a cotton like inorganic fiber made mainly from pyroxene, melted at a high temperature of 2100 ℃, and processed by high-speed centrifugation or blowing methods. Its main chemical components are SiO2 (48-52%), Al2O3 (43-49%), Fe2O3 (0.9-0.13%), CaO (less than 1%), and MgO (trace amounts).
Aluminum silicate fiber has the advantages of high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, and good thermal insulation performance. It can be woven or woven into aluminum silicate fiber board, aluminum silicate fiber felt, aluminum silicate fiber rope, aluminum silicate fiber blanket and other products. It is a new material that replaces asbestos and is widely used for insulation in thermal energy equipment in metallurgy, power, machinery, and chemical industries.
Fiber Introduction
Aluminum silicate fiber, also known as ceramic fiber, is a new type of lightweight refractory material that has the advantages of light bulk density, high temperature resistance, good thermal stability, low thermal conductivity, small heat capacity, good resistance to mechanical vibration, small thermal expansion, and good thermal insulation performance. After special processing, it can be made into aluminum silicate fiber board, aluminum silicate fiber felt, aluminum silicate fiber rope, aluminum silicate fiber blanket and other products. The new sealing material has the characteristics of low thermal conductivity, light bulk density, long service life, high tensile strength, good elasticity, and non toxicity. It is a new material that replaces asbestos and is widely used for insulation in thermal equipment in metallurgy, power, machinery, and chemical industries.
Technical indicators
Technical Characteristics
■ Low thermal conductivity, low heat capacity ■ Good thermal stability and thermal shock resistance
■ High compressive strength and good toughness ■ Excellent wind erosion resistance
■ Excellent machining performance
Nature and stability
It has excellent insulation properties, good acid and alkali corrosion resistance, and excellent chemical stability. Electrical insulator with good sound absorption, capable of absorbing over 80% of medium and high frequency waves above 500Hz. Usually used above 800 ℃.
It has excellent insulation properties, good acid and alkali corrosion resistance, good electrical insulation and sound absorption, and can absorb more than 80% of medium and high waves above 500Hz.
Synthetic method
1. Adopt the melting method. Mix kaolin, alumina, and silica in a certain proportion and melt them in an electric arc furnace or resistance electric furnace at a high temperature of over 2000 ℃. The melt is then discharged in a fine stream and blown onto the melt with high-speed airflow to form fibers.
2. Adopt the melting method. Aluminum silicate fiber is a mixture of kaolin, alumina, and silica in a mass ratio of Al2O3/SiO2 (1:1), which is placed in an electric arc furnace or resistance electric furnace and melted at a high temperature of over 2000 ℃. The melt is then flowed into a fine stream outside the furnace and blown onto the melt with high-speed airflow to form fibers. And the product is processed twice according to the content of silicon dioxide and aluminum oxide in the product.
purpose
Aluminum silicate fiber is a type of high-temperature resistant fiber. It has the characteristics of light bulk density, high temperature resistance, good thermal stability, low thermal conductivity, resistance to mechanical vibration, elasticity, sound insulation, electrical insulation, and good chemical stability. Used as high-temperature furnace filling, kiln insulation layer, and thermal network pipeline insulation in high-temperature equipment such as metallurgy, chemical, power, and mechanical industry furnaces. It can also be used as high-temperature sealing, filtering, noise reduction, catalyst carrier, and composite material reinforcement. Aluminum silicate fiber products include boards, blankets, pipes, ropes, bricks, etc.
Used for filling high-temperature furnaces, kiln insulation layers, and making fiber products.
Scope of application
■ Craft kiln wall lining ■ High temperature ceramic kiln baffle
■ Kiln lining, kiln car, furnace door baffle ■ Insulation of high-temperature thermal equipment
■ Thermal resistance and heat storage of daily electrical appliances
