High Alumina Refractory Brick Structural Devices
The composition of alumina recurrent boiling roaster furnace is used to roast aluminum hydroxide, which consists of conical cyclone tube, venturi dryer, boiling roasting furnace, High Alumina Refractory Brick feeding screw, fluidized cooler, transmigration bed, discharging trough, blanking pipe and duct and flue duct. The appearance of the equipment is cylindrical, the maximum diameter of the equipment is 5.8m, High Alumina Refractory Brick the height of 32m, the equipment shell by the steel plate welding system, the lining uses the unshaped refractory, the refractory brick, the calcium silicate board and the refractory fiber composition, and has the anchoring piece connection fixed, the entire device each equipment mutually joins, forms a sealed, the overall strong structure device.
The maximum temperature of the device is about 1100 ℃, the highest pressure is about the same. 5kPa, the maximum flow rate is/, the roasting time is about 30min, High Alumina Refractory Brick i.e. the whole roasting process is completed at high speed and high temperature. Because of the high hardness of alumina materials processed, good activity, the quality of alumina products strict requirements, High Alumina Refractory Brick any lining impurities directly affect the function of the product, therefore, the requirements of refractory materials must satisfy the following premises: High temperature, wear resistance, high strength, heat not disorderly function, integrity and strong sealing.
The working layer is made of refractory castable for 351T, for the first venturi, cooling cyclone, fluidized bed cooler, all pipes, flue, High Alumina Refractory Brick and the lower part of the boiling roasting furnace and the cone of the cyclone, which is more than two layers or three floors.
A total of 269t refractory bricks, mainly used in boiling roasting furnace, cycle cyclone, two-stage cyclone separator, two-level venturi dryer and flue.
1, Effect and Revelation ① the furnace in the use of refractory materials to focus on the use of thermal insulation, in high-temperature equipment boiling roasting furnace and the cycle of cyclone on the use of five-layer refractories, four-layer insulation, thermal insulation effect is very good. High Alumina Refractory Brick Although the internal temperature of the stove is up to 1100 ℃, the furnace surface temperature is only about 70 ℃. The other parts are two or three layers of thermal insulation, so the overall thermal efficiency of the furnace is very high.
② different equipment, different operating conditions, the selection of different refractories, so that the use of refractory materials more economical and fair, High Alumina Refractory Brick the future selection of refractory materials has some enlightenment.
③ different temperature, High Alumina Refractory Brick different refractory material, different thickness of the lining, different use parts, the shape, distribution and material of the anchorage parts are different.