Lightweight clay insulation bricks are lightweight refractory products with porous structure. The bulk density of light clay bricks is 0.6~1.3g/cm3; the compressive strength is 0.98~5.88MPa; the thermal conductivity is 0.795~2.93W/(m·K) at 300℃. The operating temperature is generally 900~1250℃. The maximum operating temperature is 1200~1400℃.
The content of AL2O3 in clay lightweight thermal insulation bricks is a technical indicator that is rarely mentioned. The performance value of refractory materials in this aspect of lightweight thermal insulation bricks is the thermal conductivity and compressive strength of the material in use. , Can better reduce the outflow of heat source, can effectively achieve the effect of energy saving, as More of us who produce lightweight insulation bricks will still study how to improve the compressive strength of lightweight insulation bricks and reduce the thermal conductivity. However, as a customer who buys this product, we will often ask you about this because of purchasing habits. The question of how much AL2O3 is in lightweight thermal insulation bricks. There is very little information in this regard, including the currently implemented national standard GB/T 3994-2013 clay thermal insulation refractory bricks that do not require the content of AL2O3 in lightweight thermal insulation bricks. index of.
Compared with general refractory bricks, lightweight clay insulation bricks are lighter in weight, with tiny pores evenly distributed inside, and higher porosity. Therefore, it can be ensured that the furnace wall loses less heat, and the cost of fuel will be correspondingly reduced. Lightweight bricks also mean less heat storage, so heating and cooling are faster, allowing faster periodic operations. Lightweight clay thermal insulation bricks are suitable for the temperature range of 900℃～1300℃.
Use of Light clay insulation bricks
Light clay thermal insulation bricks are mainly used for thermal insulation, reducing heat loss, and can be used in blast furnaces, hot blast stoves, carbon roasters, carbon calciners, coke ovens, ladles, casting systems, boilers, cement kilns, glass kilns and other Kind of kiln lining and thermal equipment, etc., suitable for metallurgy, machinery, building materials, casting, ceramics, electric power, petroleum, chemical and other industries.
Lightweight insulation brick characteristics:
1. Low thermal conductivity, with good thermal insulation effect;
2. Low thermal melting, due to low thermal conductivity, mullite series light-weight insulation bricks accumulate little heat energy, which has obvious energy-saving effects in intermittent operation;
3. Low impurity content has very low iron box alkali metal and other oxide content, therefore, high refractoriness; high aluminum content makes it maintain good performance in a reducing atmosphere;
4. High compressive strength in hot state;
5. Accurate appearance and size, speed up the masonry, reduce the amount of refractory mud, ensure the strength and stability of the masonry, thereby extending the life of the lining;
6. Can be processed into special shapes. In order to reduce the number of bricks and joints.
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