Large fluctuations in the feed pressure During the production process, the feed pressure will affect the processing capacity and grading particle size of the aggregate crushing value conclusion. Generally, the feed pressure of the aggregate crushing value conclusion should be stable as required, and no large fluctuations should occur, otherwise it will damage the performance of the...

Only in this way can we get good production indicators. Whether the ultrafine vertical mill can feed ore evenly depends on the operator's observation at all times. Generally, large fluctuations occur during shift handover. Therefore, some places must be carefully inspected. The inspection items include: the main bearing and transmission bearing of the mill, the transmission system of the...

On the one hand, reduce the grinding amount, on the other hand, recover useful minerals in time, which can improve the grinding efficiency of vertical roller mill. The influence of improving classification efficiency on grinding efficiency is self-evident.    In the grinding process, there are many factors affecting the grinding efficiency of vertical roller mill. Many factors can...

In the process of beneficiation, ore milling and grinding are essential material preparation before beneficiation. In most raw ores, useful minerals and gangue minerals are closely connected, and are often embedded in fine and even fine particles. Therefore, multiple concentrators try to follow the process principle of "more breaking and less grinding" to reduce energy consumption and improve...

The aged and unusable screen surface shall be replaced in time to avoid more serious problems. The above are the five common problems of vertical roller mill, causes and countermeasures. In order to ensure the stable and efficient operation of the equipment, in addition to selecting the type of equipment in line with the beneficiation process, daily maintenance and repair are particularly...

Insufficient lubricating oil will inevitably lead to rising temperature. Check the bearing regularly and add lubricating oil to avoid excessive temperature due to insufficient lubricating oil. Since the lubrication mode of most calcite grinder milling plants is eccentric shaft with oil splash thin oil lubrication, this lubrication mode is difficult to fundamentally eliminate the oil...

Barite mill is a very important milling equipment in mine production. Once it fails, it will directly affect the normal operation of the production line. As a common type of barite ore mill, what are the common problems of barite ore mill in daily operation? How can we solve these problems? This paper analyzes the causes of five common problems of barite ore mill and puts forward...

Only in this way can a good production index be obtained. Whether the LUM ultrafine vertical mill can be fed to the mine evenly depends on the operator’s constant observation. Generally, large fluctuations occur during the shift. Therefore, some places must be carefully checked. The inspection items are: the main bearing of the mill And the transmission bearing, the classifier's...

When the ultrafine mill operated at half load for 8 hours, it began to add materials to full load without any abnormality, and continued to operate for 15 hours.    During this period, the current of the main motor has no abnormal fluctuation, the lubrication of each lubrication point is normal, there is no oil leakage, ore leakage and water leakage, and the temperature of...

When the amount of water at the inlet is too small, the material water ratio becomes larger, the carrying capacity is weak, and the output is reduced, resulting in high material concentration and poor material fluidity at the outlet, reducing the friction between internal materials, steel balls and lining plates, increasing the coarse particles at the outlet of cement raw material milling,...

The vertical roller mill operator's operation error exceeds the output: the operation error of the vertical roller mill operator or the problem of the weighing and metering system of the weighing belt feeder will cause the output of the vertical roller mill operation to exceed the output, resulting in stones in the discharge belt of the vertical roller mill operation. The feeding can be resumed...

Good lubrication is a necessary condition to ensure the normal operation of the vertical roller mill bearing. According to statistics, vertical roller mill bearing damage caused by poor lubrication accounts for 40%, which is mainly reflected in: 1. Too much or too little lubricating grease; 2. The lubricating oil pipe is blocked; 3. Improper selection of lubricating oil or impurities in...

The stable operation of the equipment is an important way to ensure the economic benefits of the concentrator.After long-term operation, most concentrators will encounter various barite ore grinding plant problems more or less, which not only affect the normal operation of the whole concentrator, but also damage the economic benefits of each concentrator.So, what are the common...

The sealing performance of the transmission gear section is poor.The transmission gear size of barite ore grinding plant is generally large. According to the relevant national design standards, there is a certain numerical error on the gear surface. Therefore, a sealing device is required to ensure the sealing performance between barite ore grinding plant gears. However, in the existing...

(1) the safety motor is equipped with winding and bearing temperature sensors to monitor the operation status of the barite grinding mill in real time, with the ability of fault early warning, self-treatment of emergencies and self-protection. Permanent magnet synchronous variable frequency speed regulation motor can eliminate the deceleration links such as hydraulic coupler, reducer...

After the work of Raymond Mill no-load operation stage preparation stage is completed, if there is no abnormality in Raymond mill equipment, the no-load commissioning of the next stage can be started.Raymond Mill no-load test run is to start Raymond mill without putting steel balls and adding ore materials in Raymond mill cylinder, and Raymond mill will run at idle...

In addition, there are many reasons for the low output of vertical roller mill operation.  Finding and solving the problems in time is one of the ways to improve the grinding output of vertical roller mill operation.  In addition, completing various operations and daily maintenance of vertical roller mill operation in strict accordance with the design requirements of vertical...

Unreasonable grinding aid dosage LM vertical roller mill grinding can add a small amount of grinding aid without damaging the product performance, which can not only accelerate the crack propagation in material grinding, reduce the mutual adhesion between fine powders, effectively improve the grinding efficiency, but also improve the energy-saving efficiency of LM vertical roller...

If the feeding is too small, the self impact of LM vertical roller mill steel ball will increase, resulting in media waste; If LM vertical roller mill is fed too much, the grinding capacity of LM vertical roller mill will be insufficient, resulting in saturation. Therefore, it is necessary to feed in strict accordance with the feeding standard. The grinding particle size of LM vertical roller...

The bearing of silica sand grinding mill can be said to bear all the load of the equipment, so whether the lubrication degree of the bearing is enough has a great influence on the service life of the equipment. Once the abnormal noise or vibration is encountered in the process of silica sand, it is generally caused by the unstable bottom of the equipment or excessive material...

For example, the key parts of the machine are made of first-class alloy materials, the bearings are made of international leading brands such as Japan, Sweden and the United States, the motors are equipped with high protection level, the hydraulic cover opening device imported from Japan, the world's advanced light oil anti leakage device, and the frame is made of steel plate bending hot rivet...

From the side, barite powder is the basic raw material of various industries. Therefore, its emergence has laid a solid foundation for the development of various industries. With the continuous development, it is believed that it will also bring new development directions for various industries.   In the market, there are more and more people investing in barite powder industry, which...

Develop fine classification equipment and other supporting equipment matching with ultrafine vertical mill. The closed-circuit process of ultrafine vertical mill combined with classification equipment can improve production efficiency, reduce energy consumption and ensure the particle size of qualified products.  It can be said that large capacity and high-precision classification...

At present, the load detection methods of LM series vertical roller mill include the pressure difference method, noise method, power method, vibration method and ultrasonic method. Because each method can only measure a certain kind of information of LM series vertical roller mill, it has its own advantages and disadvantages, so the information fusion technology under multi factor...

First, the maintenance of the cement mill gydraulic system should be carried out regularly in strict accordance with the warranty procedures of the cement mill gydraulic system.  Secondly, during the maintenance, maintenance and assembly of the vertical roller mill hydraulic components, strictly follow the requirements of the regulations to prevent the hydraulic oil from being...

In the process of installing the frame of vertical roller mill, roller and idler, the following conditions should also be met: (1) All rollers should be kept parallel and arranged in rows; (2) All idlers should also be kept in a horizontal parallel state and arranged in rows with each other; (3) After the preparatory work of the current period is completed, the rack can be installed on the...

There are two control modes of variable frequency speed regulating motor + reducer. The first control mode is frequency conversion, and the second control mode is frequency conversion. The power factor of frequency conversion system is low, which will produce higher harmonics during startup and operation, causing pollution to the power grid. Frequent starting of motor will also cause great...

This driving mode is a common driving mode of large-scale ultrafine vertical mill, which is generally used on the long-distance large-scale ultrafine vertical mill with a length of more than 800m. Advantages: simple structure, load starting, protection of motor overload, less maintenance workload, when the motor is empty and driven by more than one motor, it can be started separately and...

During the vibration, the spring end and the support produce relative sliding. Because of dry friction, the friction noise frequency is high and the sound is large, which makes the local noise of the ultra fine vertical mill spring position increase obviously. After using rubber spring, the noise can be reduced obviously. Ultrafine vertical mill has feeding chute and discharge chute....

Deformation under force. When cement mill milling wall and the rolling mortar wall crush the ore, the strong milling force makes the body tilt or vibrate, and the seal is easy to get out of the original movement track and deform, which changes the original sealing state and causes the sealing failure of the cement mill. Improper installation. During the installation, maintenance and...

Cement standard consistency water demand (hereinafter referred to as cement water demand), the exact characteristic parameters should be the standard consistency of concrete water consumption, is to make the cement vertical roller mill to achieve a certain degree of plasticity and mobility required mixing water, it is important indicators of cement performance. Cement water demand...

The level of the overflow weir of the classifier affects the size of the sedimentation zone of the ore. In production, the level of the overflow weir of the classifier can be adjusted appropriately according to the requirements of the fineness of the grinding.  If the grinding fineness is required to be finer, angle irons of a certain height can be welded on both sides of the classifier,...

Pay attention to the heating and cooling Operation Of The Mill. Most manufacturers do not pay attention to the heating and cooling operations of ultrafine vertical mills, and fail to realize that reasonable heating and cooling operations can prolong the service life of key large bearings and wear parts. Reasonable heating rate can heat the roller sleeve, liner plate and bearing uniformly,...

The replacement workload of the ultrafine vertical mill bearings is very large. When the spare parts are fully prepared, it takes about 7 days to replace the ultrafine vertical mill or a set of ultrafine vertical mill bearings at the fastest, and the replacement cost is high and the economic loss caused is relatively large. Therefore, in order to ensure the normal operation of the...

Material and heat treatment process of liner directly determine the mechanical properties of liner and will have an important impact on the wear of liner.If the lining material is not properly selected and the heat treatment process is unreasonable, the fatigue strength and service life of the lining will be greatly reduced, which will not meet the requirements of grinding operation...