
Description of silica insulation brick
Lightweight silica bricks are also called silica insulation bricks, is a lightweight refractory material with a silica content of 91% or more. It has high strength to high temperatures. Softening under load starts at 1450-1670°C, it does not deform during prolonged use at high temperatures.
Characteristics of silica insulation brick
Name of indicator | DL-1,1 | DL-1,2 |
---|---|---|
SiO2(%)at least | 90 | 91 |
Compressive strength, N/mm², not less than | 3,0 | 4,5 |
Apparent density, g/cm³, no more than | 1.1 | 1,2 |
Additional linear growth at 2 h exposure time, %, not more than | 1,0 | 1,0 |
- at temperature, °C | 1550 | 1550 |
Density, g/cm³, max. | 2.36 | 2,39 |
Thermal conductivity, W/(m*K), not more at average temperature, °С: | ||
350±25 | 0.56 | 0,60 |
650±25* | 0.66 | 0,70 |
Advantages of silica insulation bricks
Good thermal insulation
Silica insulating bricks have low thermal conductivity, which can effectively insulate the thermal conductivity between high and low temperature, reduce energy loss and provide excellent insulation performance. Under high temperature conditions, silicon insulation bricks can maintain their good insulation properties and are not subject to heat leakage.
Resistance to acid corrosion
Since silica insulating bricks are acid resistant, they can maintain their stability and integrity in strong acidic environments. Its use can prevent corrosion and damage on the surface of equipment and is widely used in acidic environments.
Good resistance to thermal shock
Silica insulating bricks have good resistance to thermal shock and can withstand sudden temperature changes in high-temperature environments without deformation or damage. Such excellent characteristics allow silicon insulating brick to be used for a long time.
Environmentally friendly
Silica insulating bricks are inorganic non-metallic raw materials that are free of harmful substances. Natural and harmless ores and materials are used, which effectively reduce energy consumption and carbon dioxide emissions during the firing process.
Application of dynas lightweight
Glass industry
Silica insulating bricks are widely used in the glass industry, mainly for insulating the vault of the furnace. Silica insulating bricks play a good insulating role in the lower part of the vault of glass furnace. Lightweight silica bricks have higher heat resistance than lightweight clay bricks and are used in insulated areas to reduce heat loss and improve the efficiency of the melting process.
Metallurgical industry
It can be used in smelting furnaces, melting furnaces, rotary furnaces, heat shields, pipe insulation, pyrometallurgical electrolytic cells, melting furnaces, etc.
Steel industry
It is used in blast furnaces and iron smelting furnaces, converters, insulation layers, heating furnaces of insulated masonry.