Why choose alumina hollow ball bricks?
The choice of alumina hollow ball bricks as the lining material of high-temperature industrial furnaces is mainly based on its unique physical and chemical performance advantages, which can significantly improve equipment efficiency and reduce costs in multiple industrial scenarios. The following is an analysis of the core reasons:
1. Excellent high temperature resistance High operating temperature: up to 1750℃~1800℃, stable structure under long-term high temperature, small re-burning line change rate (such as 1600℃×3 hours line change ≤±0.3%), long life. Excellent thermal stability: strong thermal shock resistance (1100℃ water cooling cycle ≥15 times), can withstand sudden temperature changes without cracking.
2. Lightweight and high strength, optimized furnace structure Low volume density (1.1~1.7 g/cm³), only 1/2 of traditional heavy bricks (2.6~3.0 g/cm³). Under the same volume, the weight of the furnace body can be reduced by 1.1~1.9 tons, reducing the foundation load and installation difficulty. High mechanical strength: compressive strength ≥10~98 MPa (depending on the model), which is several times that of ordinary lightweight materials, ensuring high temperature pressure requirements.
3. Significant energy-saving effect Low thermal conductivity (≤0.5~1.1 W/(m·K) at an average of 800℃), excellent thermal insulation performance, reduced heat loss, increased thermal efficiency by more than 30%, and greatly reduced energy consumption costs. Shortened production cycle: Rapid heating and insulation capabilities can improve furnaces operation efficiency.
4. Comprehensive cost savings Reduced material usage: When replacing heavy bricks, 1.1~1.9 tons of refractory materials are saved per cubic meter, and 80% of insulation materials (such as aluminum silicate fiber) are reduced. High cost-effectiveness: Although the unit price may be slightly higher than that of ordinary heavy bricks, the overall cost is significantly reduced due to weight reduction, energy saving and extended furnace life.
5. Wide application and scene adaptability. Widely applicable fields: petrochemical gasification furnace, carbon black reactor, metallurgical induction furnace (1800℃), ceramic shuttle furnaces, vacuum medium frequency furnace (2000~2200℃) and other ultra-high temperature environments. Multifunctional role: It can be directly used as the working layer lining (anti-corrosion) and as an insulation layer to simplify the furnaces structure design.
Alumina hollow ball bricks solve the pain points of high-temperature furnaces such as high energy consumption, bulky structure, and frequent maintenance through the three core advantages of lightweight, high thermal insulation, and long life. It is especially suitable for industrial scenarios that pursue energy saving and consumption reduction, and equipment lightweight upgrades. It is an ideal material with both performance and economy in the field of high-temperature technology.
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