Staff need to clean every shift and once a week;All platforms should be cleaned in time, and there should be no dust accumulation. In order to ensure the normal operation of the ultrafine vertical mill and maintain the normal working efficiency of the ultrafine vertical mill, the daily maintenance of the ultrafine vertical mill is essential.

At present, most of the processing plants in my country separate maintenance and daily operations. The maintenance personnel are responsible for repairs, and the operating personnel are responsible for driving. Only a small number of processing plants have "combined transportation and inspection".

For example, each mineral processing project of SBM is in the stage of worker training. The workers will be trained in detail, and the actual operation and maintenance site will be simulated to improve the proficiency of the workers and ensure the normal operation of the daily maintenance and maintenance of the processing plant.

Generally, the return oil temperature of vertical roller mill is not allowed to exceed 60 °C. It is recommended to install a temperature scale or a thermometer, which can directly measure the oil temperature, which is convenient for recording and maintenance.

To check the oil quantity and cleanliness, the oil quantity and cleanliness can be checked through the oil flow indicator, the observation hole on the hollow journal bush cover, the oil level indicator in the fuel tank, etc.

Check whether there is oil leakage, sand and water in the sealing parts of the oil pump, oil circuit and each lubrication point.Before each start of the vertical roller mill, grease must be injected into the motor bearing, pinion bearing, etc., and the sealing and cleanliness of the oil filling place must be ensured.

The oil level and lubrication condition of each lubrication point of the vertical roller mill should be checked at least once every 4 hours.

The daily inspection of the vertical roller mill requires the on-the-job personnel to be familiar with the structure and performance of the equipment and the names, specifications and functions of each component, and inspect the vertical roller mill in accordance with the inspection standards and the time and items specified in the inspection card, and make records. 

Defects within the scope of self-study should be dealt with in a timely manner, and problems outside the scope of self-study should be reported in a timely manner. 

Check the main bearing hydraulic station, motor thin oil station, jet lubrication, oil pressure, oil quantity, oil temperature, oil level and other parameters of the lubrication equipment, and confirm whether it is stable; 

Check the vertical roller mill barrel, barrel Check whether there is ore leakage at the bolt connection with the end cover and the feeding trolley; 

Check whether there is abnormal vibration and abnormal noise in the main bearing, main motor and pinion shaft group, etc., and ensure that the bearing temperature of each part does not exceed 60°C;

The installation process of the main bearing of the ultrafine vertical mill should ensure that the journal and the bearing of the ultrafine vertical mill can run and have good contact performance.

In the process of installation, it is also necessary to ensure that the two hollow shafts have the same axial degree, and the gap between the central shaft and the bearing should be controlled to be between 0.5mm and 1mm, and a certain degree of flexibility should be left on both sides of the free end.

Especially in some areas with large seasonal temperature differences, the shoulder of the hollow shaft and the clearance of the bearing bush are prone to some differences. If the setting is improper, the bearing temperature will be high, and the bearing will be locked.

Therefore, under normal circumstances, when the ultrafine vertical mill is installed in winter, the gap between the outer shoulder of the hollow shaft and the bearing should be smaller than the inner side. Compared with the summer, it is just the opposite.

Their main function is to use effective friction force and centrifugal force to grind materials. Specifically, the barrel of the calcium carbonate mill is mainly made of rolled and welded steel plates. 

The flange on the barrel is connected with the inlet and outlet hollow shafts at both ends to form a whole with hinged hole bolts, and then the grinding body is installed in the barrel. 

The two ends of the cylinder are the feeding port and the discharging port. The devices inside the two hollow shafts provide channels for feeding and discharging, and the bushing inside can be replaced. 

The calcium carbonate mill cylinder moves around the horizontal axis, which generates a high centrifugal force in a certain process, makes it reach the specified height through the action of the mixture, and then falls in a parabolic arc. 

In this process, the material is affected by the medium and has a certain collision, and is also affected by the cylinder, crushed, rolled and ground. 

Experience, let's briefly talk about how to deal with the problem of too much sludge in the slurry in the operation of the limestone grinding plant. 

Add chemicals to eliminate the harmful effects of the sludge: commonly used water glass, soda, caustic soda, etc., can reduce the flocculation cover effect of the sludge. In order to reduce the harmful effects of a large amount of adsorbents in the sludge, it can be considered to adopt the method of adding chemicals in stages; 

Deslime the ground ore before flotation and discard it as tailings. If the content of useful components in the sludge is high, the removed sludge can also be treated by flotation alone or by water treatment. 

Commonly used desliming methods and equipment mainly include: 1. Desliming by classifier; 2. Desliming by hydrocyclone; flotation

Today, the editor continues to sort out some sudden failures and solutions of mini cement plants for you. The sudden failure of the mini cement plant is generally caused by multiple reasons such as long-term high-speed operation, job responsibility and improper operation.

The stator coil of the mini cement plant is broken down in the whole system of the mini cement plant. There will be iron-containing dust in the air around the material. After a long time of operation, the iron-containing dust will adhere to the coil of the mini cement plant stator. Thickness will cause short-circuit discharge on the surface of the stator coil. When a short circuit occurs for many times, the insulator of the coil will be damaged, resulting in the phenomenon of ignition breakdown, which will cause the mini cement plant to stop running.

Friction generates heat and heats up rapidly, causing the surface of the tile lining to be melted and scratched. If there is no spare spherical tile, it can only be stopped for inspection, and the tile surface can be repaired before continuing to use. The smoothness of the scratched surface can be restored by filing, cutting, grinding, etc., but the undamaged part needs to scrape out a micro oil groove, repair the tile mouth, and empty the material and grinding medium in the mini cement plant.

Manual methods are used. , Rotate the cylinder for no-load grinding, and when it reaches a certain level, carry out a no-load test operation with the transmission part, and then load the material and grinding medium into the mini cement plant for load operation, so that the mini cement plant can resume normal operation.

When the mini cement plant is running under a low load state, it is necessary to adjust the ore input of the mini cement plant in time to ensure the grindability of the material. In addition to the four wear reasons described above, the design, manufacture and installation of the mini cement plant liner are also one of the reasons that affect the rapid wear of the mini cement plant liner.

To improve the use efficiency of the mini cement plant liner , It is necessary to analyze the cause of the wear of the lining plate in order to formulate a reasonable solution.

If the material of the liner is not properly selected, its fatigue strength and life will be greatly reduced, and it will not only fail to meet the requirements of the mini cement plant. And even plastic deformation or bulging may occur. Corresponding method: Choose a new type of wear-resistant lining material.