Rotating kiln is a large steel cylinder with slight tilt and slow rotation. In addition to the rotating wear-resistant parts, it also has refractory material (brick, castable, etc.), heat exchanger and other parts. Rotary kiln is mainly used for calcination of cement clinker, dry and wet materials, raw material roasting equipment and other application industries.
The operating temperature of the rotating kiln is generally between 900-1450℃, and the temperature inside the oil is controlled by a temperature sensor to observe and adjust it in real time.A variety of fuels can be used for heating in the rotating kiln, such as natural gas, liquefied gas, pulverized coal, oil and combustible materials.
The rotation speed of the rotating kiln is generally determined according to the calcination requirement. In general, the calcination process needs to heat evenly and slowly. Generally speaking, the larger the kiln, the slower the rotation speed. It is usually rotated counterclockwise at 0.5-5 rpm.
The temperature of the exhaust gas of the rotating kiln is very high. At this time, the cooling device must be equipped. Generally speaking, the cooled air is blown out through the ventilation pipe, which not only cools the material inside the cylinders, but also plays an important role in the positive pressure of the cylinder.
The operation process of the rotating kiln is very complex. It not only needs to maintain the temperature and speed, but also can not be interrupted. Once the cylinder is stopped in the middle of the process, it needs to be reheated and the quality of the final product will be greatly reduced.
Therefore, the working environment of the rotary kiln is very important. Generally speaking, it should be placed in a well-ventilated and ventilated environment, so as to ensure that the cylinder pressure does not exceed the standard. The rotating kiln should be maintained regularly, and all the refractory bricks in the cylinder need to be replaced after a period of time. In addition, the lubrication of the moving parts in the cylinder should be paid attention to to ensure the smooth working process of the rotating kiln.
