How to self-check and repair if the jet mill fails
The jet mill has a wide range of applications and high fineness of the finished product. Typical materials include super hard diamonds, silicon carbide, metal powder, etc. Ordinary air is replaced with inert gas, such as nitrogen and carbon dioxide gas, so that the machine can be protected by inert gas, which is suitable for crushing and grading treatment of inflammable, explosive, oxidizable and other substances.
Too much, too little or aging lubricating oil in the bearings of jet mills is the main cause of bearing overheating and damage. Therefore, the lubricating oil is used according to the filling quantity. Generally, the lubricating oil uses 70% of the space, too much or too little. Conducive to bearing lubrication and heat transfer, extending the service life of the bearing. The matching bearing cap is tight with the shaft. Too tight or too loose matching between the bearing and the shaft will cause the bearing to overheat. However, by operating the shredder equipment in this way, the frictional noise and movement become more obvious, so the bearing should be disassembled, the friction part should be completed, and then reassembled as needed.
The pulverizer, cyclone separator, dust collector, and induced draft fan form a complete pulverization system. The dry compressed air is injected into the crushing chamber through a high-speed Laval nozzle. When the high-pressure air impacts the material, it repeatedly collides, rubs, shears, and crushes. The crushed material interacts with the upward air movement. The exhaust fan rotates at high speed, and the turbine is powerful. Under the action of the centrifugal force, the particles that meet the requirements enter the cyclone separator and dust collector through the classification wheel to collect, and the coarse particles return to the crushing zone to continue crushing.
The jet mill is a device that uses high-speed airflow to achieve ultra-fine grinding of dry materials. It consists of a pulverizing nozzle, grading and other components. The material enters the pulverizing chamber through a screw feeder, and the compressed air enters at a high speed through a special configuration of supersonic nozzles. In the crushing chamber, the material is repeatedly impacted, collided and crushed by the high-speed airflow.
Nowadays, jet mills are frequently used, and there are many types of popular mills on the market. Therefore, they have various problems. When encountering these problems, everyone always waits for maintenance personnel to inspect and repair, which is costly and troublesome. If we can perform self-examination and repair at this time, it will be much more convenient.
First, check the power socket, plug, and power cord for oxygen loss or breakage. If there is no such problem, you can plug in the power test machine. When the motor is energized and does not rotate, the wheel can be turned by lightly turning it by hand. It can be concluded that one of the two starting capacitors of the device has failed. If the discharge spark can be emitted and there is a loud "pop" sound, it means that the capacitor can be used; if the spark and noise are weak, it means that the capacity of the capacitor has decreased, and it needs to be replaced or added with a small capacitor. If the capacitor of the jet mill is damaged and short-circuited, this method cannot be used, and it must be replaced with a new product of the same specification to be repaired.
Regarding the safety issues when using the jet mill
The jet mill uses high-speed airflow to carry animal materials, so that the material particles collide and shear each other to achieve the purpose of ultra-fine pulverization. Because of its excellent pulverizing effect, it is favored by powder manufacturers in various industries. The typical materials of the jet mill are: super hard diamond, silicon carbide, metal powder, etc., high purity requirements: ceramic pigments, medicine, biochemical, etc., low temperature requirements: medicine, PVC. By changing the ordinary air in the air source to inert gases such as nitrogen and carbon dioxide, the machine can be used as an inert gas protection device, suitable for the crushing and classification of inflammable, explosive, and oxidizable materials.
The safety issues of ultrafine powder processing with jet mills include respiratory pneumoconiosis and dust explosion. The particle size of the dust processed by the jet mill is basically below 5μm, and the dust below 5μm is the most harmful to the human body. Therefore, the probability of the operator of the jet mill operator suffering from pneumoconiosis occupational disease will increase significantly.
In addition, after the dust is scattered in the air on a large scale to form a dust cloud, a dust explosion may occur. Because the dust particles that are not captured during the processing of the jet mill have a suitable particle size and distribution state: generally the particle size is less than 5μm, the dispersion stability in the air is good, and it is easy to reach the explosion limit. If there is enough combustion-supporting air around these particles and has its minimum ignition energy, then dust explosions are prone to occur. Moreover, the shock wave generated by the explosion of a local dust cloud causes a large amount of deposited dust to fly up and mix with the air, which may form a secondary explosion. Because dust explosion has the characteristics of large energy, serious damage, short burst time, etc., it is easy to cause incomplete combustion, thereby producing a large amount of carbon monoxide gas to poison people. Therefore, the consequences of dust explosions are extremely serious.
What points should be paid attention to in the daily maintenance of the jet mill?
1. During the production process, the bearing temperature rise of the jet mill must be checked frequently. When the temperature rise exceeds 50°C, the machine should be shut down for inspection to find out the cause and eliminate the fault.
2. When the jet mill is running, the transmission belt is easy to stretch, so attention should be paid to adjusting the belt's proper tightness to ensure the working life of the belt.
3. The wearing parts should be checked frequently and replaced in time to ensure production quality and throughput.
4. The blades and bushings should be frequently checked for wear. After wear, the productivity will decrease and the particle size will become coarser. Replace it in time when it is found to be worn.
5. The main engine and graded flow bearings are all grease lubricated.
6. The grease replacement period for the bearings of the jet mill is 2000 hours, and the filling amount of the grease is 1/2 (upper measurement) or 3/4 (lower measurement) of the space in the bearing cavity. Do not fill with grease too much. Otherwise, the bearing temperature will be too high.
7. The grease change period of the screw feeder is 4000 hours, and ordinary calcium-based grease is added.
In fact, every kind of mechanical equipment has a certain degree of danger when in use, and the fluidized bed jet mill is the same. This requires us to master its use method, standard operation and scientific maintenance can minimize the risk of danger.
The jet mill can ensure the collection rate and yield of ceramic pigments
Ceramic colors refer to powdered metal oxides and other mixtures used for ceramic glazes, which are used to decorate ceramics, porcelain and terracotta, and are also used in porcelain enamels for decorative metalware. When it is in powder form, most of the ceramic pigments are off-white; although the particle size requirements of the pigments are not explicitly specified, it is generally required to pass a 300-mesh sieve. Insufficient pulverization will make it difficult to use due to uneven particle size, and lack of hiding power, resulting in spots after firing. On the contrary, if the crush is too fine as dust, it will not be fully fused in the glaze and become the cause of glaze rolling. Compared with other crushing equipment, the product morphology, particle size distribution, purity and other aspects obtained by the jet mill have obvious advantages.
The ceramic pigment jet milling equipment strictly controls the distribution of particles to ensure a qualified collection rate and yield rate. The complete production line is our company's mature technology, with stable equipment performance, constant operating parameters and reliable quality.
Equipment characteristics of ceramic pigment jet mill
1. Avoid impurities doping into the materials to ensure the purity of the materials.
- Without water, washing, and completely dry production, one-time production can obtain fine powder materials with better particle size distribution and pollution-free, and the single-number finished product rate can reach more than 75%.
- Complete, stable and uniform flow field control technology; constant gas-solid concentration ratio design technology in the crushing cavity to ensure the stable and long-term operation of the system.
- Reasonable flow field design and special wear-resistant treatment for easy-wear parts greatly reduce the wear of the equipment, extend the service life, high classification accuracy, more accurate cutting particle size, lower speed required, and long service life.
2. In a fully fluidized state, an excellent spherical particle shape can be obtained; qualified micropowders are immediately classified to avoid excessive crushing. The company's unique frequency conversion feeding system helps to disperse materials, ensure continuous, uniform and stable feeding, and help product particle size control.
3. The complete and stable flow field established by the high-efficiency and high-precision classifier can strictly limit the generation of large particles, and obtain an excellent particle size distribution and a high and narrow particle size range. In particular, the core competitive advantage of more thorough extraction and good stability of fine powder has been widely recognized by the industry.
4. Once the operating parameters of the equipment are adjusted and fixed, the operation is stable, and there is no difference or change in the long-term continuous startup.
5. Fully enclosed negative pressure operation, low temperature crushing, high purity operation, no dust pollution, system emission <5mg/m3. The crushing chamber is equipped with an automatic slag discharge device, which can automatically remove the hard-to-grind particles and impurities in the material. It has the function of breaking up and dispersing agglomerated materials. Large flow of air means cooling and grinding, which can be used for processing heat-sensitive materials without deposition problems.
Ceramic pigment jet mill is suitable for typical materials: ceramic pigments (glaze, frit, etc.), ceramic raw materials (feldspar, porcelain clay, bauxite, etc.), ceramic raw materials (clay, gangue, etc.), special ceramics, diamonds , Green (black) silicon carbide, brown (white) corundum, cubic boron nitride, garnet, zircon sand, quartz sand, tungsten carbide, mullite, refractory materials, etc...
How to superfine lithium iron phosphate
Lithium iron phosphate battery is a new type of lithium ion battery that has attracted widespread attention in recent years. Because lithium iron phosphate ( LiFePO4 ) material has the characteristics of high specific energy, long cycle life, stable structure, good safety performance, and low cost, lithium iron phosphate Power batteries have many advantages such as high mass specific energy, low unit price, and high working potential. The pulverization of lithium iron phosphate is a very important link. The products processed by the principle of jet pulverization have narrow particle size distribution, no excessive pulverization and large particles, low fine powder rate, and high pass rate. They are the first choice of most battery material manufacturers. The lithium iron phosphate special jet mill has the characteristics of high yield, uniform particle size distribution, and good particle morphology. It can be widely used in micron-level experiments and production of battery powder cathode materials.
The special jet mill for lithium iron phosphate is a kind of equipment that uses high-speed airflow to achieve ultra-fine grinding of dry materials. It consists of a feeding zone, a crushing zone, and a classification zone. The material enters the crushing zone through the feeding zone, and the crushed material enters the classification zone with the upward air flow under the action of the negative pressure system. The fine particles that meet the particle size requirements enter the cyclone separator and the dust collector to collect with the air flow, but do not meet the particle size requirements The coarse particles return to the crushing zone to continue crushing.
The special jet mill for lithium iron phosphate also has the following performance advantages:
1. The jet mill has the ability of shaping, the finished particle has an excellent morphology, and can obtain spherical (potato-like) particles.
2. Narrow particle size distribution and high tap density of the finished product.
3. Mechanical ultra-fine pulverizer, low over pulverization, and the finished product rate can reach 75%-95% or more.
4. The inside of the equipment can be lined with wear-resistant materials, and the finished product has high purity and low equipment wear.
5. The air flow classifier adopts frequency conversion adjustment, which can be adjusted arbitrarily between 0.5μm and 100μm.
6. The equipment runs stably, and there is no difference or change when it is turned on continuously for a long time.
7. Fully enclosed negative pressure operation, automatic control, low noise and no dust pollution.
The structural characteristics of the special jet mill for lithium iron phosphate are:
1. The material contact cavity is lined with ceramic or coating to prevent iron pollution caused by the material crushing process and ensure the purity of the crushed items.
2. Does not heat up. The material is crushed under the state of gas expansion, and the temperature will not rise.
3. The wear is small, the particles collide and crush each other, and rarely collide with the wall surface. It is suitable for crushing materials with Mohs hardness below nine.
4. Low energy consumption, 15%~25% energy saving compared with other types of jet mills.
It adopts advanced automatic control, real-time display of running status, simple operation, and can form a central monitoring system with the equipment control system according to the actual requirements of customers to realize remote monitoring.
Maintenance of jet mill classifier
The jet mill adopts the advanced structure of similar products at home and abroad, and is updated and improved on the basis of the Raymond mill in the same industry. This equipment has higher efficiency than ball mills, lower power consumption, smaller footprint, and small one-time investment. The jet pulverization classifier is a kind of equipment that uses high-speed airflow to achieve ultrafine pulverization of dry materials. The jet pulverization classifier is composed of a pulverizing nozzle, a grading rotor, and a screw feeder. The jet pulverizing classifier, cyclone separator, dust collector, and induced draft fan constitute a complete pulverizing system.
After the compressed air is filtered and dried, it is sprayed into the crushing cavity at high speed through the nozzle. At the intersection of multiple high-pressure airflows, the materials are repeatedly collided, rubbed, and sheared to be crushed. The crushed materials move with the ascending airflow under the action of the fan's suction. In the classification area, the coarse and fine materials are separated under the strong centrifugal force generated by the high-speed rotating classification turbine. The fine particles that meet the particle size requirements are collected by the cyclone separator and dust collector through the classification wheel, and the coarse particles drop to the crushing area and continue to be crushed. The jet mill classifier is widely used in industries such as chemical industry, minerals, metallurgy, abrasives, ceramics, refractory materials, medicine, pesticides, food, health products, new materials and so on.
The jet pulverization classifier is an air flow classification technology with a square cylindrical structure as the main body. This technology changes the form of the circular cylinder rotating air field, which makes the material more dispersible, thereby improving the classification efficiency. The jet pulverizing classifier adopts a high-precision horizontal classification form, which has a sharp cutting effect, good cutting accuracy and large particle control performance. The jet pulverizing classifier also adopts the connection form of the classifying wheel hinge structure, which can remove the classifying impeller, making it very convenient for gap adjustment and maintenance. It embodies the humanized design concept.
Air jet pulverizer classifier needs maintenance after working for a period of time to extend its service life and create more benefits for manufacturers. The jet pulverizing classifier can be maintained through the following four aspects:
(1) When cleaning the jet mill classifier, the motor and bearing seals should not be wetted with water.
(2) When replacing parts or repairing and maintaining the jet mill classifier, it should be carried out in the power-off state, and warning signs should be hung up.
(3) The bearings should be lubricated.
(4) Lubricating oil must be added after the general jet pulverizing classifier has worked for 1500 hours.
Precautions & maintenance steps before assembling the grinder
The shredder should be cleaned before assembly to ensure that the surface is clean. Pay attention to the cleanness of the ring die. If the material of the ring die of the screw hole is not clear, the ring die bolt hole is likely to be broken when the bolt tightens the ring. It is hoped to use a torque wrench to tighten the ring die to ensure the specified tightening torque.
Generally speaking, the new mold that matches the new roller, the ring mold and the old mold use the old roller, and each partial gap between the rollers is roughly the same. Therefore, the entire ring mold loading and unloading uniform can improve production efficiency. When assembling the roller, pay attention to the inspection of the bearing. If damage is found, it should be replaced in time. After the roller is assembled, make sure that there is a certain gap so that the roller can rotate freely. The transfer roller must be oiled on time. Once the roller lacks oil, it will cause the bearing and pressure roller to burn, and in severe cases, the entire roller will be scrapped.
And pay attention to before work, check the transmission parts, meters, valves, filling lubricating oil, and remove iron. The maintenance of carbon steel ring molds is more cautious.
1. The fixed operation of the crusher should be fixed on the cement foundation. If you change the work place frequently, the shredder and the motor should be installed on the base made of angle iron. If the pulverizer is powered by a diesel engine, the power of the two should be matched, that is, the power of the diesel engine is slightly greater than that of the pulverizer, and the pulley grooves of the two should be consistent. The outer end surface of the pulley should be on the same plane.
2. Before starting up, check whether the connecting bolts of each part of the unit are tight, whether the tightness of the transmission belt is appropriate, and whether the power cord is in good condition. Whether the motor shaft and the shredder shaft are parallel.
3. Check whether the hammer is in good condition, the aperture of the sieve is suitable, and whether it is damaged. Drag the belt by hand to check whether the spindle rotates flexibly, whether it is stuck, bumped, or rubbed.
4. After starting the machine, let the equipment run idling for 2-3 minutes to check whether the rotation of the rotor is correct and whether the sound is normal. It can work only after it rotates smoothly at the rated speed.
5. Pay attention to the operation of the crusher at all times during work, and feed evenly to prevent blocking the car, and do not overwork for a long time. If there are vibrations, noises, excessive temperature of the bearing and the body, or spraying materials, you should stop and check immediately, and then continue to work after troubleshooting.
6. The crushed materials should be carefully inspected, and no foreign objects such as stones, metals, etc. should be mixed to avoid damage to the machine.
7. When the machine is running, the operator is not allowed to leave the unit, nor is it allowed to disassemble the machine during operation to observe the working conditions in the crushing chamber, and the maintenance tools must not be placed on the machine or packing.
8. Operators should not wear gloves. When blockage occurs, it is strictly forbidden to reach into the filler hopper. When feeding, stand on the side of the grinder to prevent rebound debris from hurting the face.
9. Don't stop the machine immediately after the work is over, it should be idling for 2-3 minutes to allow the material in the machine to be discharged completely. Cleaning and maintenance work should be carried out after shutdown.
10. Hammers are the main wearing parts. After wear, the whole set of hammers must be replaced at the same time whether the edges and corners are changed in the same direction or the corners are changed. When replacing new hammers, the whole set of hammers must be replaced at the same time. Trade new for old. The sieves are also vulnerable parts. If part of the sieves are damaged, they can be riveted. If they are severely damaged, new sieves need to be replaced.
11. After 300 hours of operation of the crusher, the bearings should be cleaned and the oil should be replaced. When parking for a long time, the belt should be removed.
The air classifier can accurately classify metal powder
The rapid development of 3D printing has been widely used in our real life. The production of metal powder is a very critical part, but it is often overlooked. For high-quality special metals with superior mechanical properties required in the industry, alloy metal powders are showing an increasing trend. Airflow classifier is a common equipment in metal powder processing, and it is also a more important equipment. Only qualified finished metal powders screened by the airflow classifier can be put into application.
The metal powder air classifier is a classifying system composed of a classifier, a dust collector, and an induced draft fan. Under the action of fan suction, the material moves at high speed from the lower end of the classifier to the classification area with the updraft. Under the action of the strong centrifugal force generated by the high-speed rotating classification vortex, the coarse and fine materials are separated, and the fine particles that meet the particle size requirements are classified. The gap between the wheel blades enters the cyclone separator or the dust collector to collect, the coarse particles entrained by the part of the fine particles hit the wall and the speed disappears, and they descend along the cylinder wall to the secondary air outlet. After the strong elutriation of the secondary air, the coarse and fine particles are separated. The particles rise to the classification zone for secondary classification, and the coarse particles fall to the discharge port for discharge.
Equipment performance characteristics of metal powder air classifier:
1. It does not need to be washed with water or water, and it is produced by completely dry method, which can obtain a narrower particle size distribution and non-polluting abrasive powder; one grade can be processed into products of any brand according to the current domestic and foreign standards (such as: national standard W63～W3.5, Japanese standard 240#～3000# and European standard F230/53～F1200/3). The single number finished product rate reaches more than 75%.
2. The classification accuracy is high, the cutting particle size is more accurate, the required speed is lower, and the service life is long.
3. Independent casting bearing seat, never deformed, and long service life.
4. Optimized transmission design, small bearing force and long service life.
5. Unique piping design helps powder flow, helps reduce abrasion, and easy-to-wear parts are easy to replace and handle.
6. The unique frequency conversion feeding system is helpful for the dispersion of materials, can ensure the continuous uniformity and stability of the feeding, and is helpful for the control of product particle size.
7. Unique internal circulation secondary air design, adjustable grading cone gap, greatly reduced air consumption, lower grading energy consumption, and thorough extraction of fine powder.
8. The separation of the flow path helps to slow down the abrasion at the bottom of the classification wheel and is more conducive to the control of large particles.
9. Fully enclosed negative pressure operation, no dust pollution.
10. Good stability, stable production after adjusting the fixed parameters once;
11. In particular, the core competitive advantage of more thorough extraction of fine powder and good stability has been widely recognized by the industry.
12. The whole system adopts automatic control, which can realize one-button start and stop, and the operation is simple and convenient. The connection with the central control can realize remote control.
- General application:
It can classify materials that cannot be classified on ordinary sorting equipment. It is especially suitable for processing products that strictly limit the largest particle size and require a narrow particle size distribution, such as heavy calcium, kaolin, talcum powder, barite powder, copier toner, paint, Mica, graphite, auxin, aluminum hydroxide, etc.
- High-purity applications:
It can classify materials with extremely strict impurity content or materials that are extremely sensitive to iron, while meeting the requirements of particle size and particle size distribution. Typical materials are: fluorescent powder, titanium dioxide, starch, silica gel, aluminum, copper, luminescent powder and various high-purity pigments.
- Abrasive and hard materials:
The application of the vertical eddy current classifier can exceed the subdivision level of hard materials with a Mohs hardness level of seven or more, so that the wear of the equipment is extremely small. The rotating speed of the grading wheel can be adjusted, and the crushing parameters can be optimized. The combination of multiple classifiers can complete narrow-band classification of several particle sizes at one time. Typical products are: diamond, silicon carbide, boron carbide, tungsten carbide, special ceramics, emery and so on.
- Food, health products, medicine:
It can superfinely process the raw materials of medicine, food and health care products. Its low-temperature pulverization, high-purity operation, high processing finish and easy cleaning of the machine are ideal for use in the pharmaceutical, health care and food industries, which not only improves the bioavailability of medicines. And curative effect, and reduce production cost. Typical products are: pollen, hawthorn, shiitake mushroom, pearl powder, stomach medicine, nimodipine, antibiotic medicine, contrast medicine, Ganoderma lucidum, gallnut, fleece-flower root, etc.
Analysis of Principle and Characteristics of Quartz Ultrafine Jet Mill
Quartz sand is an important industrial mineral raw material, widely used in glass, casting, ceramics and refractory materials, metallurgy, construction, chemical industry, plastics, rubber, abrasives and other industries. Quartz sand is a kind of quartz particles produced by crushing quartz stone, which is a difficult raw material to process in non-metallic minerals. The strong representative material in mineral crushing is quartz, which has a density of 2.6g/cm3 and a Mohs hardness of 6.5-7.5, which is a natural high-hardness and wear-resistant material. Quartz sand grinding requires low iron content, good grain shape, concentrated particle size, less fine powder, and no dust flying. It is a relatively difficult raw material to process in non-metallic minerals.
The ultra-fine jet mill is a compressed air that is frozen, filtered and dried, and then forms a supersonic airflow through the nozzles to be injected into the grinding chamber to fluidize the material. The accelerated material merges at the intersection of the jet airflows of several nozzles to produce Violent collision, friction, and shearing can achieve ultra-fine pulverization of particles. The pulverized material is transported to the impeller classification area by the rising airflow. Under the action of the centrifugal force of the grading wheel and the suction force of the fan, the coarse and fine powder are separated. The airflow enters the cyclone collector, the fine dust is collected by the bag filter, and the purified gas is discharged by the induced draft fan.
Features of superfine jet mill:
(1) This machine is the latest combination of fluidized bed and high-precision vertical turbine classifier.
(2) High efficiency: The full use of jet energy greatly improves the crushing efficiency.
(3) Low abrasion: "Fluidized bed + vertical turbine classifier" can process ultra-fine powder with high purity and ultra-narrow, avoiding the abrasion of the crushing part of the "spray + vertical classifier" and "fluidization" Wear of the “bed + horizontal classifier” classification part. Under the same material, the service life of equipment wearing parts is equivalent to 8 times that of similar international products.
(4) High classification accuracy: stable and complete classification flow field and special sealing measures can effectively avoid the leakage of coarse particles. The vertical turbine classifier and the fluidized bed form an internal circulation to ensure the qualified product particle size d97=2 -74µm.
(5) Less over-crushing: The unique classification flow field reduces the gas-solid concentration in the classification zone and avoids over-crushing.
(6) Variable combination structure: It can be used as a machine for two purposes. It can be used as a crushing classifier or a separate classifier.
(7) Fully enclosed negative pressure operation, no dust pollution, dust removal rate above 99.9%.
(8) The equipment is easy to operate and maintain, easy to disassemble and wash, and has low noise.
(9) The equipment has particle shape control technology, which can maintain the material characteristics.
Jet mills are also widely used in ultra-fine grinding of low-temperature, high-purity and high-hardness dry materials such as chemicals, abrasives, ceramics, environmental protection, new materials, new energy, non-metallic minerals, medicine and food, powder metallurgy, battery materials, etc.
The use of jet mills to process APIs is the mainstream of the market
Raw material drug powder generally refers to products with a product particle size of less than 20μm. Airflow pulverization of micropowder is an operation process of pulverizing larger particles or powders into smaller particles or powders. Generally, the product size after pulverization is required to be less than 20μm. Its purpose is to reduce the particle size, increase the specific surface area, and increase the distribution range of the required particle size.
Jet mills are mainly divided into two types: collision type and cyclone type. Its working principle is to use compressed air (or nitrogen) as power, the material is accelerated in the pulverizer for high-speed movement, and the material particles collide with the inner chamber of the pulverizer to achieve pulverization. The main purpose is to change the particle size and Its surface activity and so on. The particle size of the material can be crushed to between 1μm and 100μm.
The characteristics of the API jet mill are:
1. This equipment is made of stainless steel 316 and stainless steel 304.
2. The inside of the equipment is finely polished 0.25-0.5 microns to meet the polishing requirements of different parts.
3. All equipment adopts quick pipe clamp interface connection, which is easy to disassemble and install, and easy to clean.
4. The equipment adopts movable casters, which is easy to move.
5. Except for the feeder, this equipment does not require electricity for other parts, and can be produced only by providing compressed air.
6. The equipment processing capacity is 0.5-30kg/h.
7. The finest pulverization fineness d100<3 microns.
8. It can solve the problems of sticking and blocking of viscous materials and strong static materials.
9. The equipment is airtight, there is almost no loss of raw materials, and the collection rate is high; the equipment has good airtightness, no leakage, and little damage to operators.
10. The equipment has low operating noise. Under normal production conditions, the equipment noise is very low, less than 63dB.
11. The raw materials produced can be directly connected to the packaging bag according to the requirements, which can avoid the leakage caused by the transfer process of the raw materials from the tank to the packaging bag, and avoid the damage to the human body and the leakage loss of the sticky wall of the material.
12. Compared with other equipment, the jet mill has lower energy consumption and smaller nozzle aperture.
13. It can provide a crushing cavity with a very narrow particle size distribution.
14. According to requirements, different Laval nozzles can be provided with different spray angles.
15. The crushing pressure can be up to 1.6Mpa.
16. There is no back-blowing phenomenon, our crushing disc pressure and feeding pressure, no matter which pressure is high, there will be no back-blowing phenomenon.
The jet mill classifier strictly controls the morphology, particle size and purity of the carbon powder
Toner, also called toner, is a powdery substance used to fix images on paper. In response to different needs, the production of toner is developing in the direction of refinement, colorization and high speed. Toner powder manufacturing mainly adopts pulverization method and polymerization method, and the pulverization method is widely used in the carbon powder processing industry. Compared with other crushing equipment, the product morphology, particle size distribution, purity, etc. obtained by using the jet mill has obvious advantages. It is one of the few domestic equipment that can process color consumable powder.
The standard configuration of the jet pulverization and classification production line is a combination of a fluidized bed jet pulverization host and a turbo classifier (an additional classifier will be added when high requirements are required). The particle size distribution is strictly controlled to ensure a qualified collection rate and yield. The complete production line has mature technology, stable equipment performance, constant operating parameters and reliable quality.
Features
- The jet pulverizer classifier can efficiently and accurately process high-quality toner for laser printer copiers.
- The complete and stable flow field established by multiple high-efficiency and high-precision classifiers in series strictly limits the generation of large particles, obtains an excellent particle size distribution and a very narrow particle size range, and can control the particle size of the product within a specific range.
- The control of pulverization strength and the technology of high-efficiency grading ensure a higher yield. The yield of black powder is more than 80%, and the yield of color powder is more than 70%.
- The effective application of particle shape control technology can obtain a better product shape.
- Once the operating parameters of the equipment are adjusted and fixed, the operation is stable, and there is no difference or change in the long-term continuous startup.
- Fully enclosed negative pressure operation, low-temperature crushing, high-purity operation, no dust pollution, system emission <5mg/m3.
- Equipped with a cyclone collector, the separated waste can be reused, reducing production costs.