Ultrafine mill is continuously making cement for cement enterprises day and night, at the same time, reasonably clear the kiln and other maintenance work also have considerable implications for the normal operation of the kiln. So, how to clear the ultrafine mill? Zenith Machinery to give you the answer.
Cut off the electricity to collector 1-2 hours before reducing the materials, and then reduce the material to about 2/3 of the original amount, so that during the clearing process, materials will be from more to less, from thick to thin, the firing temperature is from high to low. The materials inside the kiln will decrease gradually, so the burning zone temperature and tail temperature will not become too much difficult due to the thick material layer. Otherwise, if there is no load, it will become overheated, and even the cyclone preheater cyclone will break down. If forced to reduce the coal by pressing the wind amount, its idle is too large, which will affect the quality of finished materials.
Stop feeding after reducing the materials1-2 hours later. The tail temperature must be kept 20-30 degrees lower than the normal temperature, reduce the coal consumption without the discharging of waste materials, decrease the exhaust volume, if the tail temperature cannot be dropped down, appropriate amount of water can be added to the kiln, which is only suitable for the wet ultrafine mill; dry process kiln with preheater can open the air door; for the kiln with vertical cylinder preheating, you can open the cigarette cap to prevent the burning of kiln equipment. In the claiming control, you should do as follows: not burning fire, keep the particle to prevent burning of kiln crust. With the material layer thinning, the tail temperature gradually decreased. Burning with almost no material, stop the coal fire, and the kiln will downhill to a minimum speed, add water to the kiln, and stops the exhaust fan, and then the kiln slowly down the cold, at the same time close the water cooler.
In order to prevent body bending of the high temperature kiln, the kiln should be slow in the lower rotating speed for one hour before stopping it, stop it after the auxiliary motor rotation, until the kiln crust surface become dark, the process had completely stopped. In order to ensure not quench or avoid refractory brick fry head, check the fire after 4 hours, open exhaust fan and open the furnace door to make the kiln cooling down.