operation details of raymond mill
The operation of Raymond mill grinding production system includes the before starting operation and after startup operation details of Raymond mill machine. To learn these operations will be help for clients understanding of Raymond mill operation and it will avoid some unnecessary damage and costs caused by improper operation.
Before starting operation Raymond mill, it needs to do more and more works. It needs to check Raymond mill inside parts wear parts worn situation. When the wear parts are worn seriously, it needs to change them. The energy of working system is the electric energy. Before the machine works, you need to check the electric circuit is normal and there is no abnormal situation. Before Raymond mill work, it needs to add oil. Some parts need handle lubrication and some parts need thin oil lubrication. The handle lubrication will need open the machine inside bearing parts and clean them to lubricating. Thin oil lubrication can directly adding oil.
The parts inside the Raymond mill are connected by the bolts of other fixed devices. Before starting the Raymond mill, clients need to tighten the bolts and prevent the machine is loose and have dangerous.
Before the Raymond mill works, it needs to adjust the classifier speed and motor exhaust air volume. It is connected to the outside through the belt conveyor. The host is connected with motor through belt and gets energy from motor. Clients need to check the belt before starting the machine.
When you have done the before starting operation details of Raymond mill, you can start up the machine. The details of Raymond mill include: when the Raymond mill works, all the watching doors are closed and they cannot be open. It is used to prevent the inner materials will hurt people. In the working process of Raymond mill, it cannot have the operation work, maintain work, no lubrication and these can guarantee the machine in normal operation state. In the working process, if you hear some abnormal voice or vibration, you need to stop the machine at once and check it. When you are ensure that this machine is OK and it can go on working continuously. All the clients need to remember this: when the Raymond mill system stops in the processing process, you need to discharge the inside materials in the mill before next start up.
The utilization rate of coal mine energy is relatively high, because there are a lot of slag produced by coal industry smelting every year. In order to avoid these slag damage to the environment and increase the recycling utilization rate, slag grinding mill is a more thorough and effective way of utilization.
Source: guikuang By Administrator Posted: 2019-02-22 As we all know that the Raymond mill is one of the common use stone powder making machines, compare with other grinding mills, the Raymond mill usually is more stable and efficient. However, after a 
Source: GuikuangBy Administrator Posted: 2019-02-22 In the field of fluorite grinding, Raymond mill will be one of the most popular machines for fluorite powder grinding. As a common grinding mill for fluorite powder processing, fluorite Raymond mill is an excellent high efficiency equipment. It has scientific principles and design structure, high productivity, low energy consumption, 
Source: guikuang By Administrator Posted: 2019-02-25 As a common grinding plant, Raymond Mill can be used in fine powder making of barite, calcite, potassium feldspar, talc, marble, limestone, dolomite, fluorite, lime, activated clay, activated carbon, bentonite, kaolin, cement and phosphate rock, and other Non-flammable and 
Source: Guikuang By Administrator Posted: 2019-2-21 Generally speaking, the price of Raymond mill usually more cheaper than other grinding mills, and compare with other grinding mills, the Raymond mill usually has a stable performance, the capacity of Raymond mill can up to 20 t/h, and 
raymond mill,raymond mill working principle
From 1906 to today, Raymond mill development than a century, was originally used as a coal grinding equipment Raymond mill , continuous development and innovation , has been widely used in various industries. we look over a hundred years Raymond mill history of the development , which has been constantly adapt to a variety of needs, but also because the process is simple, reasonable structure, easy maintenance , which is widely favored by the milling industry , Raymond mill in milling industry is essential.
The whole structure of Raymond mill is composed of a host machine, analysis, plumbing, air blower, finished cyclone separator, jaw crusher, bucket elevator, electromagnetic vibration feeder, electric motors and other components. The host is composed of a frame, Raymond mill inlet volute, blade, grinding, grinding ring, a cover casing and a motor.
The whole working process of Raymond Mill (the process of grinding material): the bulk materials by jaw crusher to desired size, by the elevator will be material to the hopper, the vibrating feeder evenly and quantitatively and continuously into the indoor host grinding grinding, grinding after the powder is fan airflow. Through the analysis of machine grading, fineness of powder will meet with the gas flow through the pipe into the large cyclone collector, were isolated and collected, then powder tube is finished powder. The airflow from large cyclone collector inhalation top return air duct blower. The air current of the whole system is a closed loop, and circulation in the flow of positive and negative pressure condition.
In the grinding chamber internal grinding material with certain water content, the grinding heat generated in grinding chamber gas evaporation changes the gas flow rate, and the pipeline connection is not tight outside the gas is inhaled, the circulating air volume increase, is this by adjusting the fan with the host legacy of pipe to flow balance, and the gas into the small cyclone collector excess, the fine powder gas into the collection down, then the cyclone collector upper exhaust pipe into the atmosphere, or into the dust collector with the exhaust gas purification.
The 65Mn: grinding ring in the use of this material, the durability is improved obviously. It is characterized by high hardness, good wear resistance, magnetic. Mainly used for product in powder processing of iron. The product after normalizing and tempering heat treatment, mechanical performance is improved greatly, make the product not only has good wear resistance, but also greatly improve the toughness.
The Mn13: compared with 65Mn, the grinding ring in the Mn13 material after casting, in life has changed. After the pouring of water toughening treatment. Water toughening treatment after casting with tensile strength, toughness, high plasticity and no magnetism. The grinding ring is more durable. Subject to severe shock and strong pressure deformation in the using process, surface hardening, and martensite formation, thus forming the wear surface layer high, while the inner layer to maintain excellent toughness, even wear very thin, can bear a larger impact load.
Raymond mill host another vulnerability is grinding roller, under normal circumstances, Raymond mill for grinding roller in use for some time, this according to customer's materials, frequency of use and other factors to determine whether the operation. To limestone as an example, if the same operating conditions, the quality of the grinding roller but hard, then there will be excessive wear, the service life is greatly reduced. As a result, mill roll material is also one of the most important factor in deciding the quality of equipment manufacturers of Raymond mill.
Impulse dust removal equipment is configured for loading, grinding, finished product transportation and storage, to ensure that the production site is clean and environmentally friendly, and there is no dust pollution.
After signing the order, formulate detailed plans for production, preparation and delivery, basic production, and engineer dispatch, installation and commissioning, to ensure that the entire link is carried out in an orderly and efficient manner, and the final delivery is guaranteed.
raymond mills - raymond roller mill - grinding mill | agico cement
Raymond mill is also called Raymond roller mill. It is a new type of high-fineness grinding mill with high efficiency and closed circulation, which can completely replace the cement ball mill. This kind of machine is commonly used in cement plant for raw materials fine grinding, such as limestone, coal, gypsum, etc. Under normal conditions, these materials Mohs hardness should not be greater than 9.3 and the humidity should be under 6%. AGICO is one of the Raymond mill manufacturers in China. The Raymond roller mill we produced has the characteristic of stable performance, strong adaptability and high-cost performance. Its finished product fineness is usually between 0.61 and 0.033 mm, which can meet the requirements of different users.
When materials uniformly and continuously enter the machine body, they will be transported to the middle of the grinding roller and grinding ring by scraper blades,and during the grinding process, the materials will be stirred repeatedly by them. The grinding roller is tightly pressed on the grinding ring under the action of centrifugal force so that the material is crushed into powder under the action of grinding pressure, and then entered into the analysis machine by the cycle wind of the blower. After that, the qualified materials will pass through the analysis machine and enter the classifier for separation and collection. Otherwise, they will be sent back to the grinding disc for further grinding.
AGICO Group is an integrative enterprise group. It is a Chinese company that specialized in manufacturing and exporting cement plants and cement equipment, providing the turnkey project from project design, equipment installation and equipment commissioning to equipment maintenance.
raymond mill, development history of raymond mill
Materials: Barite, calcite, potash feldspar, talc, marble,
limestone, dolomite, fluorspar, lime, activated clay, activated carbon, bentonite,
kaolin, cement, phosphate rock, gypsum, etc.
Applications: Metallurgy, chemical engineering, building materials,
mining, pharmacy, cosmetics and other fields
In 1906, C.V. Grueber founded a machinery factory in the southern suburbs of Berlin. Using his
patents obtained in the United States, he produced the first Maxecon mill and used it as the
coal grinding equipment for the MOABIT power station. The grinding power can reach 5TPH. In the
past few years, nearly 600 units have been sold and used in different industries. In the same
period, BEWAG planned to develop a coal mill with a higher output. After E.C. Loesche took over
and headed the C.V. Grueber Machinery Plant, he decided to purchase the patented Raymond
Centrifugal Ring-roller Mill from the United States to produce the first generation of Raymond
However, practices proved that the fineness of finished products produced by Raymond Mills was dissatisfactory. Usually, the fineness was about 400 meshes, with very little materials fineness up to 1000 meshes, which did not meet the requirements of refined development. This kind of Raymond mill was only suitable coal materials with soft, low ash and good grinding property, because the grinding force (centrifugal force) of Raymond coal grinding mill was limited by the diameter and rotation speed of grinding roller at that time. However, German coal was characteristic of hard and high ash content, which required higher grinding power. Therefore, Raymond mill of this structure wasnt prevalent in Germany as itwas difficult to meet the grinding requirements. But it was surprising that this kind of Raymond mill was just suitable for the coal quality in the United States, there was no doubt that Raymond mill was widely promoted and applied in the United States.
In 1925,E.C.Loesche summarized the use characteristics and disadvantages of the first generation of Raymond coal mill and decided to further improve the structure of Raymond mill. He developed a mill whose grinding principle is opposite to the first one, which was called improved Raymond mill.
The ventilation of this improved Raymond mill system has two modes: positive pressure and negative pressure direct blowing. The patent of this type of Raymond mill was soon acquired by Combustion Engineering (a company in America).
The structure of this Raymond mill was similar in many aspects to that of the current Loesche mill. However, it was different from Loesche mill on its cylindrical grinding roller and grinder table with a 15 degree sloping surface. The grinding roller was equipped with a roll-out device for inspection and maintenance. And it also equipped a protective device to prevent metal contact between the grinding roller and the grinding table. In addition, the grinding roller can be lifted in advance before the mill starts that can reduce the pull-in torque.
With the development and improvement over the years, there are more and more types of Raymond mills. Since China introduced this machine, Raymond mill has been well received by majority of users due to its high stability, well-adapted and highly cost-effective. So we can see that Raymond mill plays an important role in grinding equipment.
SBM has launched three upgrade series of Raymond Mills, MB5X Pendulum Roller Mill, MTW European Grinding Mill and MTM Medium-speed Grinding Mill respectively. Compared with the first generation of Raymond Mills, these three types of grinding mills are more energy-efficient and environmentally friendly, have more sophisticated automatic control systems, and can help users to move toward refined and large-scale development.
According to accumulation and experimental analyses of on-site test data for more than
thirty years, SBM, a Chinese grinding mill manufacturer, has researched and developed
the fifth-generation pendulous hanging grinding mill MB5X grinding mill. All
non-combustible and non-explosive brittle mineral products whose Moh's hardness are
below Grade 7 and water content below 6% could be ground by this grinding mill.
MTW European Grinding Mill is innovatively designed through deep research on grinding
mills and development experience. It absorbs the latest European powder grinding
technology and concept, and combines the suggestions of 9158 customers on grinding
mills. This grinding mill perfectly satisfies the production demands of the customers on
200-33m (80-425Mesh) fine powder.
MTM Medium-speed Grinding Mill is a world leading tool for powder grinding. MTM grinding
mill absorbs world first-class industrial powder milling technology and organizes the
technical experts and related engineers for elaborate design, test and improvement.
After jaw crushers break large bulky materials to smaller ones, elevators work to send
materials to the hopper. Then, by electromagnetic vibrating feeders, broken materials
are evenly and quantitatively sent to the grinding chamber of MTM Medium-speed Grinding
Mill. After grinding, materials are blown away by airflow to the powder concentrator for
classifying. Under the action of the impeller of powder selector, materials which fail
to meet fineness would be sent back to grinding chamber to get another grinding while
qualified powders would be collected by cyclone powder collector and discharged from the
bottom as finished products. And, after that, the airflow would go into the fan along
with the air return duct at the top of cyclone power collector. This system adopts a
closed circuit and runs under positive and negative pressure.
Because materials have a certain content of moisture, heat generated during grinding may
lead air evaporation or swell in the grinding chamber so that the amount of airflow
increases sharply. Besides, if the feed port and joints of pipelines are not sealed
well, external air may intrude the grinding mill and lead imbalance of airflow. So, SBM
arranges exhaust valves at the air outlet of the fan to induce redundant air into the
bag filter. After purifying, the redundant air is discharged. This arrangement can
achieve both the balance of airflow and the eco-friendly production.
Correct operation of the Raymond Mill is a must. Improper operation may cause damage to
the Raymond Mill and shorten its service life, which may cause considerable economic
losses due to long-term shutdown.
whats the notes for raymond mill operation? - guilin hangda mining machinery co., ltd
I.Remove the bolts.The electromagnetic vibration feeder of Raymondmillis generally before the factory. The gap between the electromagnetic coil and the silicon steel sheet (1-2 mm) has been adjusted well. Generally it is not necessary to adjust.Four M1240 bolts were used to tighten the silicon steel sheet as the manufacturer considered that the sheet might loosen during transportation.Therefore, it is necessary to loosen the four bolts fastening the silicon steel sheet under the vibrating head before starting the machine. Otherwise ,the feeder of the Raymondmillis unable to discharge the material.II.If the sound is abnormal, stop to check.Because the Raymondmillpulverizes materials by means of impact and friction between grinding rollers, grinding rings and abrasive materials, the vibration and noise in operation of the Raymondmillare relatively large.But the sound is uniform and there should be no abnormal noise.If abnormal sound is found or the main engine current of the Raymondmillis suddenly increased and cannot be reduced for a long time, it should be stopped immediately for inspection.III.Adjust feed speed.The feed size of the Raymondmill should be uniform. And the feed speed should be appropriate.If the feeding speed is too slow, the output will be reduced. If the feeding speed is too fast, the air passage will be blocked, resulting in the failure of the Raymondmilland even an accident.Feed speed can be adjusted according to the main motor current of Raymondmill.IV.Material shape.The mining ore material to be ground into the main mill should be in the shape of a block. If it is in the shape of powder or there is more powder in the block, the output of the Raymondmillwill be reduced.V.Adjust the speed of the analyzer.The speed of the classifierof Raymondmillcan be adjusted by the controller knob through the frequency conversion governor to obtain different speed of the analytical machine.The user should choose the corresponding speed of the analyzer according to the particle size of the finished material.The higher the speed of the analytical machine, the finer the particle size of the finished products.Converter built-in parameters have been set before the factory, generally do not change its parameters.VI .Check each bearing frequently.Temperature rise more than 600C or abnormal noise should be shut down for inspection.VII.Test machine.The newly installed units shall be tested experimentally to check the accuracy and reliability of the installation of Raymondmill.The machine should not be more than two minutes for air test. Stop the machine to check the flexibility of rotation of each part, whether there is overheating, whether the bolt is loose, and whether the host vibration is too large. After the adjustment, you can add material for trial production.
The electromagnetic vibration feeder of Raymondmillis generally before the factory. The gap between the electromagnetic coil and the silicon steel sheet (1-2 mm) has been adjusted well. Generally it is not necessary to adjust.
Four M1240 bolts were used to tighten the silicon steel sheet as the manufacturer considered that the sheet might loosen during transportation.Therefore, it is necessary to loosen the four bolts fastening the silicon steel sheet under the vibrating head before starting the machine. Otherwise ,the feeder of the Raymondmillis unable to discharge the material.
Because the Raymondmillpulverizes materials by means of impact and friction between grinding rollers, grinding rings and abrasive materials, the vibration and noise in operation of the Raymondmillare relatively large.But the sound is uniform and there should be no abnormal noise.If abnormal sound is found or the main engine current of the Raymondmillis suddenly increased and cannot be reduced for a long time, it should be stopped immediately for inspection.
The feed size of the Raymondmill should be uniform. And the feed speed should be appropriate.If the feeding speed is too slow, the output will be reduced. If the feeding speed is too fast, the air passage will be blocked, resulting in the failure of the Raymondmilland even an accident.Feed speed can be adjusted according to the main motor current of Raymondmill.
The mining ore material to be ground into the main mill should be in the shape of a block. If it is in the shape of powder or there is more powder in the block, the output of the Raymondmillwill be reduced.
The speed of the classifierof Raymondmillcan be adjusted by the controller knob through the frequency conversion governor to obtain different speed of the analytical machine.The user should choose the corresponding speed of the analyzer according to the particle size of the finished material.The higher the speed of the analytical machine, the finer the particle size of the finished products.Converter built-in parameters have been set before the factory, generally do not change its parameters.
The newly installed units shall be tested experimentally to check the accuracy and reliability of the installation of Raymondmill.The machine should not be more than two minutes for air test. Stop the machine to check the flexibility of rotation of each part, whether there is overheating, whether the bolt is loose, and whether the host vibration is too large. After the adjustment, you can add material for trial production.