Xinshengrun, a dryer manufacturer, will offer a detailed introduction to the aspects to consider when operating a rotary cement kiln. This type of kiln is a key piece of equipment in both dry and wet cement clinker production lines. Rotary kilns are widely used in metallurgy, the chemical industry, refractory materials for construction, environmental protection, and other sectors.

This rotary kiln consists of a cylinder, support devices, a support device with thrust rollers, a transmission device, a movable head, a kiln tail sealing device, and a pulverized coal injection piping system. During operation, the kiln body tilts slightly from the horizontal. The entire kiln body is supported by a roller system and features thrust rollers to control its vertical movement. In addition to the main drive, the transmission system includes an auxiliary drive device that allows the kiln body to continue rotating even in the event of a power outage, thus preventing bending and deformation. The kiln head and tail sealing devices utilize advanced technology to ensure a reliable seal. During handling and loading/unloading:

1. When using two or more steel cables for lifting, each cable must be evenly tensioned and the angle between the cable and the entry line must not exceed 30°.

2. When handling the equipment, the site conditions, road conditions, equipment installation location, direction, and handling sequence must be thoroughly investigated beforehand to avoid rework. 3. When lifting the rotary kiln equipment, it must be done following the lifting position indicated on the factory label. If there are no visible markings, the center of gravity and stress points must be determined beforehand.

4. Lifting ropes must not come into direct contact with the right corner of the machined surface of the equipment. Wooden boards, rubber mats, or similar materials should be used as padding to prevent damage to the machined surface and cutting of the ropes.

5. When the weight of the rotary kiln equipment to be lifted approaches the machinery’s permissible lifting capacity, a lifting test must be performed before lifting to carefully verify that there are no abnormal changes in the load or the machinery. Lifting may only proceed after safety has been confirmed.

6. A designated person must be in charge of the operation. For example, when lifting and moving heavy equipment such as rotary kilns, experienced and highly trained crane operators must be in charge.

7. When lifting near power lines, the distance between the machinery and equipment and the power lines must be greater than the specified range. When two cranes are used to lift equipment such as rotary kilns, the allowable load of the cranes should generally be reduced by 20% of the rated load.

8. Large, fixed cranes exceeding 20 m in height must be kept on the ground during the rainy season if there are no tall buildings nearby. When positioning the equipment, it is strictly forbidden to place hands or feet between the equipment being lifted and the wedges or wooden blocks to prevent injury.

9. Construction machinery and tools must be thoroughly inspected before use. They must not be used if they are defective. Ropes, lifting equipment, and clamps must meet all requirements before use. 10. During lifting operations, no one may remain under the lifted load. When lifting large rotary kiln equipment, warning lines must be marked, and unauthorized personnel may not enter the area.