In April, 300 tons magnesite chrome bricks are packed for delivering to customer in Uzbekistan for their program. High quality and nice price refractory materials in Topower Refractory.
Treatment of hazardous wastes in the rotary kiln usually has several stages of the process of experience: dry and hot solution, burning, and burning. Under the action of high temperature, hazardous waste will be decomposed and destroyed, but it will form flue gas and slag. The flue gas of the hazardous waste and some melting stabs will cause damage to the refractory material in the rotary kiln. Therefore, the proper selection of refractory fire materials can effectively turn the quality of the kiln.
Selection of fire -resistant materials for hazardous waste rotation kiln
In the selection of refractory materials in the inner wall of the rotary kiln, it must be high -temperature resistant. The treatment of hazardous waste needs to be burned at high temperature. If the high temperature resistance of the inner wall is not good, it will not only affect its service life, but also affect its treatment effect. Generally speaking, the incineration temperature of hazardous waste is around 800 ℃. The operating temperature in the rotary kiln is generally 850℃~ 1000℃.
The strength of the refractory material of the rotary kiln refers to its mechanical strength. Dangerous waste usually has different shapes and sizes, and the hardness is naturally different. If the strength and wear resistance of the material are poor, it is easy to cause impact and wear when the waste entering the kiln and the incineration and flipping. In addition, dangerous items will swell during the combustion process, and the shell of the rotating kiln will also cause stress on the refractory fire material, which is bound to require the material to have good strength.
The refractory material of the rotary kiln is tightly covered with the inner wall of the entire kiln body. In the process of the normal operation of the rotating kiln, the thermal stress caused by temperature changes, the mechanical stress of the cylinder rotation, the stress of the material, the process of temperature changes will be Bringing refractive -resistant materials to shrink the volume, when the volume stability of the refractory material is poor or the volume changes at different temperatures will produce a refractory material, the squeezing or gap between the refractory material and the cylinder, causing the material to be broken or falling off the falling off or falling off.
During the incineration of hazardous waste incineration, a large amount of corrosive gases and slags will be generated. The stormhole and micro -cracks of the opening of the material surface will be entered inside the material. It can reduce the penetration and response of harmful substances to a certain extent, and extend the overall service life of the rotary kiln.
