General Roasting Rotary Kiln

The preparation method of refractory materials for general roasting rotary kiln is simple and reliable. The refractory materials prepared have the advantages of high compressive strength, good wear resistance, good thermal shock resistance and strong resistance to medium erosion. The construction is convenient, which greatly extends the service life of the rotary kiln refractory materials, ensures the normal production of the enterprise, and minimizes the maintenance time and reduces the maintenance cost.
The quality of rotary kiln refractory materials affects whether the rotary kiln can operate stably. The refractory materials of the rotary kiln should have the following characteristics at the same time:
(1) High temperature resistance. It can operate in a high temperature environment above 800 ℃ for a long time.
(2) High strength and excellent wear resistance. The refractory materials in the rotary kiln need to have a certain mechanical strength to withstand the expansion stress at high temperature and the stress formed by the deformation of the rotary kiln shell.
Rotary kiln
(3) Good chemical stability and thermal stability to resist the corrosion of chemical substances in the flue gas and withstand the alternating thermal stress under the incineration state.
(4) Good thermal expansion stability. Although the thermal expansion coefficient of the rotary kiln shell is greater than that of the rotary kiln refractory material, the shell temperature is generally around 150-300 ℃, while the temperature resistant to the refractory material is generally above 800 ℃. This may cause the refractory material to have a larger thermal expansion than the rotary kiln shell and be easy to fall off.
(5) The porosity should be low. A high porosity will make it easy for flue gas to penetrate into the refractory material and corrode the refractory material body.