Heat Exchange Alumina Balls
1、Regenerative burner bed applications
2、Heat exchange media
Regenerative ball is suitable for the gas and the gas fuel industrial furnace of regenerative combustion system is chosen, especially for regenerative heating furnace of steel industry, the regenerative ladle baking equipment, air separation equipment of air separation industry regenerator regenerative furnace, non-ferrous metal industry, also used in large forging plant regenerative trolley furnace, regenerative electric boilers, the regenerative incinerator industries do regenerative heat carrier.
Spherical balls of alpha-alumina (corundum) is produced by sintering ball-formed calcined alumina at a temperature just under the 3704°F (2040°C) fusion point of aluminum oxide. Two kinds of formation process: rolling and pressing .
The hot storage ball of rigid jade alumina is an excellent refractory material with the remarkable characteristics of low shrinkage of refiring line, high softening temperature under high temperature load, corrosion resistance, high strength, large heat storage and release, good thermal shock stability, good thermal conductivity, small thermal expansion coefficient and so on. Based on gas (blast furnace, converter) and the air double preheating (oil, high calorific value gas combustion air is taken, such as single heat storage mode), can make the regenerative heating furnace smoke less 20-50%, exhaust smoke temperature dropped to less than 150 degrees, yields by 15-20%, billet heating time shortened by 50%, oxidation burning loss reduce 30-50% of the environmental protection and energy saving effect.In the working process, alumina balls in the heat storage tank divide the air flow into very small flow strands, and the air flow forms strong thunderstorm when it flows in the heat conduction body, which can effectively absorb the heat on the surface of the heat conduction body, so the regenerative burner can be changed frequently and quickly.After the high temperature gas flows through the regenerator, the temperature can rise to only about 100℃ lower than the flue gas temperature, and the temperature efficiency is more than 90%.
The corundum alumina ball is made of industrial alumina as the main raw material. It has the characteristics of low shrinkage, high temperature load softening temperature, corrosion resistance, high strength, large heat storage and discharge, good thermal shock stability, good thermal conductivity and small number of thermal expansion.
White crystalline gravel or ball. Depending on requirements, ball sizes are produced from 1/8 to 2 inch (tolerance ± 6% mm)