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A rock is a mixture of solid minerals or minerals, usually a consolidated or unconsolidated aggregate of one or two or more minerals. Rock is mainly used in building materials, metal refining, pigments and other industries.

Before the application of rock, it needs to be processed into grinding by grinding equipment. The processed rock powder is widely used. In the industry, rock powder is used as an additive for cement. In rubber and plastic industries, rock powder is also used to replace some rubber raw materials. So what equipment is used to grind rocks?

There are many equipment for grinding rocks, and different rock milling equipment has different processing requirements. Based on years of experience, SBM's technicians recommend the preferred Raymond mill for grinding rock. On rock processing equipment, the Raymond Mill grinds the rock to 30-425 mesh and can be arbitrarily adjusted to suit the needs of the processed rock powder.

As the Raymond mill manufacturer Shanghai SBM production of Raymond mill quality is guaranteed, while the product also has YGM series Raymond mill, high pressure mill, high pressure suspension roller mill, HGM series superfine mill, Raymond Grinding accessories and equipment equipped with Raymond mills. The products produced by the company are favored by the majority of users. Welcome to our company for consultation and ordering.

xuanxuan Aug 6 · Tags: raymond mill

Raymond Milling Equipment is the most commonly used in the milling industry. There are various problems encountered in the course of their work. Some users have asked us that the material fineness of the raymond mill has not reached the standard. Due to the grinding equipment manufacturers, Shisheng customers often ask about the difference in the fineness of the milling, sometimes. Some of these new customers are particularly familiar with the use of technology.

Shi Sheng suggested that if you encounter such a problem, take a look at the following method (the technical parameters of Raymond Milling Equipment, generally based on limestone):

A. Reasons for grinding materials: the purity of abrasive materials of different materials is different;

B. Effect of feed rate:

1: too much feed

2: Insufficient feed

3: Effect of feed size

Fan flow 4: size, larger air volume, coarser, and, conversely, smaller grain size.

Specifically, if the hardness of the material is large, the fineness of the material will be greater. Operated. Users of Raymond Milling Equipment know that when it is in operation, if too much feed will cause blockage of the throttle, blockage of the throttle will result in a drop in production. If the feed is too small, the wind will be too large and the particle size will be large, so it is best to know the fineness of the feed. Another reason is the adjustment of the fan, resulting in a large particle size meeting, the fan's air volume, but the size is good. Therefore, if the grain size of the Raymond grinding equipment is not standard, it can be adjusted by the fan.

xuanxuan Aug 1 · Tags: raymond mill

Due to the long working time of Raymond mill, it brings people benefits and continuous loss. Therefore, when using the equipment daily, we should pay attention to the maintenance of the equipment. In addition to some maintenance, some parts that cannot be touched are needed. These have played a key role in the normal operation of the Raymond mill. Then, how to properly maintain the wearing parts of Raymond Mill.

1. The blade of Raymond Mill mainly shovels the material between the grinding roller and the grinding ring, so that the material is fully crushed. When the blade continuously shovels the material, the materials of different quality and hardness are used for a long time. The contact friction is easy to be worn. In severe cases, the blade will not be able to shovel the material, which will affect the working efficiency of the Raymond mill.

Second, the grinding roller and the grinding ring are the wearing parts in the whole equipment. In the production process of the Raymond mill, the material passes directly between the grinding roller and the grinding ring, so that it is squeezed and rotated by the two to achieve fine crushing. Effect. Because the grinding roller and the grinding ring are constantly subjected to the friction of the material, and are subjected to frictional forces between each other. When the grinding roller and the grinding ring are severely worn, or when the wear is uneven, it will have a certain influence on the fine powder production, and thus the unevenness of the fineness of the finished product may occur.

Third, Raymond mill's blade, grinding roller and grinding ring play a very important role in the production, and in the entire crushing process, play an irreplaceable role, so this is the easiest Raymond mill The worn parts. Remind users that during the production process, it is recommended to check the degree of wear of the blade, grinding ring and grinding roller frequently, and maintain the wearing parts reasonably to extend the service life.

The above is about the maintenance of the wearing parts of Raymond Mill, I hope to help everyone.

xuanxuan Jul 31 · Tags: raymond mill

Everyone should be very clear. A complete set of Raymond mill system consists of three parts: the main machine, the analysis machine and the fan. In the Raymond mill control system, you need to pay attention to the situation of these three motors, so that you can work on the equipment grinding work. To understanding. Recently, some customers have called to consult, what is the reason for the high current of the Raymond mill fan? This kind of problem can not be considered from one side, and should be combined with the entire Raymond mill system for investigation.

First, check whether the lower air duct is blocked. After passing the qualified fine powder of the analysis machine, it is necessary to go through the pipeline, enter the powder collector, and finally obtain the finished product. When the machine is turned on and off, the fine powder will precipitate due to the absence of wind. Therefore, during normal operation, a small amount of fine powder will be deposited through the curve. After a long time, the fine powder of the air duct will accumulate. Especially in the corner part, it is easy to cause the phenomenon of blockage. At this time, the fan will generate heat, and the current of the fan motor will rise. It requires a timely volume, and it is necessary to check whether the air passage is excessively fine. The corresponding solution.

Secondly, the Raymond mill feeds fast, which also causes the feed to block the material. At this time, the blockage will cause circulating wind in the main engine and the pipe. On the one hand, the function of the grinding roller and the grinding ring in the main machine is seriously consumed. If the wind does not go up, it will cause the fan current to rise, and it needs to be stopped for inspection.

Finally, check whether the fan belt of the Raymond mill is loose. At the same time, the driving mode of the fan is that the motor is driven by the belt. When the belt feeds, the wind will be insufficient. If there is not enough air volume, the material is difficult to be blown up. It will also rise, and more attention is needed at this time. If not handled, it will affect the output of the equipment.

The above is a brief introduction to the high current of the Raymond mill fan. If you want to know more about this, you can do detailed consultation online.


xuanxuan Jul 12 · Tags: raymond mill

As the most common milling equipment at present, Raymond Mill plays an important role in the processing and production of various materials. During the operation of the equipment, if the operation is not proper, the fan current will rise, which has a great impact on the production operation of the equipment. Therefore, here we will analyze the cause of the increase in the current of the Raymond mill fan.

First, the wind channel blocking material

In the production of Raymond mill, the qualified materials are separated by the analysis machine, and the finished product is obtained by entering the powder collector through the pipeline. As the working time of the equipment is prolonged, a small amount of fine powder is continuously deposited from the bend of the pipeline, and the long-term flow will lead to the accumulation of fine powder in the air passage, especially in the curved portion. This phenomenon, the fan will heat up, the current rises. Therefore, when the fan current of the Raymond mill is increased, it is necessary to stop the inspection and clean it in time.

Second, the feed is too fast

When the user feeds the Raymond mill too fast, or the feed amount is too much, the material will not be fully ground, resulting in blockage of the grinding cavity, resulting in no circulation in the main body and the pipe, thus increasing the number of The wear efficiency of the grinding ring increases the current of the fan of the equipment. Therefore, it is necessary to maintain a uniform and orderly feed to prevent the fan current from rising.

Third, the wind is insufficient

The fan is an important part of the Raymond mill, and the wind power of the fan is the key factor to ensure the smooth operation of the equipment. Therefore, if the fan current of the Raymond mill is insufficient and the material cannot be blown up, the fan power will be too high.

The above three points are the reasons for the increase of the current of the fan of the Raymond mill. In daily production, the user should carefully observe the use of the equipment. Once the problem is found, the machine should be shut down in time to eliminate all faults before restarting.


xuanxuan Jul 1 · Tags: raymond mill

As the most common milling equipment at present, Raymond Mill plays an important role in the processing and production of various materials. During the operation of the equipment, if the operation is not proper, the fan current will rise, which has a great impact on the production operation of the equipment. Therefore, here we will analyze the cause of the increase in the current of the Raymond mill fan.

First, the wind channel blocking material

In the production of Raymond mill, the qualified materials are separated by the analysis machine, and the finished product is obtained by entering the powder collector through the pipeline. As the working time of the equipment is prolonged, a small amount of fine powder is continuously deposited from the bend of the pipeline, and the long-term flow will lead to the accumulation of fine powder in the air passage, especially in the curved portion. This phenomenon, the fan will heat up, the current rises. Therefore, when the fan current of the Raymond mill is increased, it is necessary to stop the inspection and clean it in time.

Second, the feed is too fast

When the user feeds the Raymond mill too fast, or the feed amount is too much, the material will not be fully ground, resulting in blockage of the grinding cavity, resulting in no circulation in the main body and the pipe, thus increasing the number of The wear efficiency of the grinding ring increases the current of the fan of the equipment. Therefore, it is necessary to maintain a uniform and orderly feed to prevent the fan current from rising.

Third, the wind is insufficient

The fan is an important part of the Raymond mill, and the wind power of the fan is the key factor to ensure the smooth operation of the equipment. Therefore, if the fan current of the Raymond mill is insufficient and the material cannot be blown up, the fan power will be too high.

The above three points are the reasons for the increase of the current of the fan of the Raymond mill. In daily production, the user should carefully observe the use of the equipment. Once the problem is found, the machine should be shut down in time to eliminate all faults before restarting.


xuanxuan Jul 1 · Tags: raymond mill

The so-called zero pressure surface (or zero interface), which is the pressure interface formed by the point where the gas flow pressure in the system is zero (gauge pressure). There are two zero-facets in the loop airflow system, one in the blower, the airflow changes from negative pressure to positive pressure, and the wind pressure of the blower is fundamentally constant. Another zero interface is in the raymond mill, and the airflow changes from positive pressure to negative pressure.

The zero pressure surface is further divided into a full pressure zero pressure surface and a static pressure zero pressure surface. The so-called full-pressure zero-pressure surface is a surface composed of points where the total pressure is equal to zero; and the surface composed of points where the static pressure is equal to zero is called a static pressure zero-pressure surface.

In the loop system, there is a necessary interval between the full pressure zero pressure surface and the static pressure zero pressure surface, and the resistance in this interval is equal to the pressure difference between the full pressure zero pressure surface and the static pressure zero pressure surface. The concept of using full-pressure zero-pressure surface is for the purpose of accounting, and the concept of using static pressure zero-pressure surface is to facilitate the investigation of the situation of powder blowing (winding) or leaking (human) wind in order to control the operation.

However, in the calculation of the moving zero pressure surface, it is necessary to apply the concept of full pressure and full pressure zero pressure surface. The full-pressure zero-pressure surface and the static-pressure zero-pressure surface are always presented in pairs. If a zero-pressure surface is moved, another zero-pressure surface will follow. The resistance of the residual air duct determines the position of the full pressure zero pressure surface. When the residual air duct resistance is not large, the zero pressure surface is below the feeding port during operation, and the zero pressure surface is not required to be moved normally. During production, the flow rate of the controlled residual air duct (tempered residual air duct gate) shall be such that the full pressure zero pressure surface is constant at the suspension roller and the grinding ring (steel ring); when the air volume of the residual air duct is controlled in Table 3-4 When the number is limited, the resistance is not greater than the values ​​listed in Table 3-1, and the zero pressure surface may not be moved; when the residual air duct adopts a large dust collector, or because the dust removal requirement is high, the entire wind loop is required. In the case of the negative pressure mode, the full pressure zero pressure surface is moved from the raymond mill to the vicinity of the blower outlet, and even moved into the blower.

xuanxuan Jun 16 · Tags: raymond mill
In order to ensure that the dust emission concentration in the working environment is lower than the environmental protection standard, the Raymond mill is usually equipped with a dust collector. Most customers choose a bag filter. This must be cleaned up in time, otherwise it will block the bag and affect it. Dust removal effect. Many powder processing plants, because of the pursuit of profit, often overlook the cleaning of the dust collector, when the Raymond mill is in normal production, let the workers hold wooden sticks and other equipment to beat the expanded bag. It is unreasonable to knock down the material attached to the inner surface and fall into the dust collector below. When used, it is easy to cause damage to the bag itself, and the artificial force cannot be grasped. The most obvious is The bag is smashed. At this time, because it is in normal production, the dust will leak out to the entire workshop. Not to mention dust removal, there is no way to work. So what method is used to calculate it correctly? Baidu search methods include high-frequency vibration, chemical cleaning, low-temperature water cleaning, drug soaking, hot air drying, etc. These methods are a bit difficult for some processing plants. After all, do this powder processing business, buy and use the mine. It is impossible for the Mongolian mill to use such a professional method to clean the dust collector. Here, we provide customers with the most simple and effective way, first contact the equipment manufacturer of Raymond Mill, buy more bags, or purchase according to the materials provided by the manufacturer, when the dust removal effect does not occur. Good, or found that there is a bag bonding phenomenon, manually remove the bag, replace it with a new one, then do not throw away the old cloth bag, wash it with water and dry it to use it again. SBM Heavy Industry reminds users to stop the bag cleaning in time to ensure that the dust removal system works normally, and also to collect the collected dust in time to avoid the excessive dust collection effect.
xuanxuan May 9 · Tags: raymond mill

The poor heat dissipation of the bearing is a common appearance of the Raymond mill. This appearance will directly affect the normal operation and production power of the mill. The common heat dissipation of the commonly used mill bearings is mainly manifested in the following representations:

One or two bearing seats are rugged, or the rotor of the motor is not concentric with the rotor of the mill, which will cause the bearing to be impacted by the rated load, and then cause poor heat dissipation of the bearing. In this case, stop the machine immediately to eliminate the damage to prevent early damage to the bearing.

Second, the smooth oil in the bearing of Raymond mill is too much, too little or aging is also the primary cause of damage to the bearing heat and damage. It is necessary to add smooth oil on time according to the requirements of the book, usually smooth bearing the bearing space. 70%-80%, too much or too little is not conducive to bearing smoothness and heat transfer.

Third, the cooperation between the bearing cap and the shaft is too tight, and the cooperation between the bearing and the shaft is too tight or too loose, which will lead to poor heat dissipation of the bearing. Once this condition occurs, the bearing should be stopped and removed. Trim the friction parts and reassemble as needed.

The bearing is the weakest part of the Raymond mill. Our staff should pay attention to the noise of the bearing part of the bearing at any time. It should be treated as soon as possible, and the right medicine should be fully recovered.

xuanxuan Apr 10 · Tags: raymond mill


The working process of Raymond mill: After the bulk material is crushed, it is sent to the storage hopper by the hoist, and then the vibrating feeder is continuously and evenly fed into the main machine grinding chamber. The material entering the grinding chamber is shoveled by the blade and enters the grinding machine. The roller and the grinding ring are crushed and crushed. The blower blows air from the periphery of the machine into the grinding chamber, and the pulverized material is brought into the analysis machine. The large granular material falls back to the regrind, and the qualified fine powder enters the finished product with the airflow. The cyclone dust collector, the fine powder is separated from the air and discharged from the discharge port to be the finished product. The upper end of the air is returned to the fan, and the above cycle is repeated.In the production process of Raymond Mill, the noise is too large and accompanied by large vibration. At this time, it is very likely that the Raymond mill has abnormal conditions. In order to make the Raymond mill run smoothly, the user should pay attention to the following items:Raymond mill vibration: First of all, it is necessary to distinguish between host vibration or fan vibration hematite beneficiation process. If the host is vibrating, you must first troubleshoot according to the exclusion method:1. Look at the anchor bolts and tighten the bolts;2, to check the amount of feed, is not too small and the feed size, timely adjustment;3. Check the degree of wear of the blade. If the blade is worn out seriously, it will not produce the material;4. Check if the grinding roller of the grinding machine has been deformed. Check the grinding machine in this order for too much noise. Be sure to operate safely during operation, and beware of accidents.If the fan vibration is easy to solve, there are two main reasons for the fan vibration:1. Loose bolts on the ground can be seen by sight. Tighten the anchor bolts;2. There is a certain amount of dust on the wind blades, or uneven wear, which causes the rotor to rotate unbalanced to drive the fan to vibrate. In this case, the dust can be removed or the blades can be replaced.

xuanxuan Apr 9 · Tags: raymond mill
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