What is Airflow Crusher
The Airflow Crusher is a specialized crushing device that utilizes high-speed airflow to reduce raw materials into super fine particles, less than 20 microns. This unique technology offers a customizable and scalable solution to accommodate diverse particle size needs.
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Advantages of Airflow Crusher
Advantages of Airflow Crusher:
High Efficiency: One of the primary benefits of using Airflow Crusher is their high efficiency in particle size reduction. The design of the Airflow Crusher allows for high-velocity collisions between particles and the walls of the milling chamber, resulting in effective grinding.
Narrow Particle Size Distribution: Airflow Crusher can produce a narrow particle size distribution, which is important for many industries, such as pharmaceuticals. A narrow particle size distribution ensures consistency in the final product's quality, ultimately leading to better results.
No Contamination: Another advantage of Airflow Crusher is that they do not require any mechanical parts to come into contact with the material being processed. This eliminates the risk of contamination from wear and tear on machinery.
Versatility: Airflow Crusher can handle a wide variety of materials and can be used for both dry and wet grinding applications. Because of this versatility, Airflow Crusher are often a go-to choice for many different types of processing within various industries.
Scale-up: Airflow Crusher are easily scalable from laboratory to production scale, making them suitable for companies looking to scale up their operations. This scalability also enables companies to test new methods and processes on a small scale before investing more significant resources into full-scale production.
What Factors are Related to the Crushing Degree of Air Mill
To what extent can the air mill crush? It is related to the following factors:
- For the initial fineness of raw materials, the air mill generally requires that the feed is less than 50 mesh.
- It is related to the physical properties of materials and the fluidity of materials and the uniformity of particles. Some materials have poor fluidity, many impurities and high solvent content, and may be blocked in the production process. At this time, special equipment is needed. Not all materials can be crushed with standard equipment to achieve the crushing fineness.
- It is related to the crushing pressure in the crushing process. The feeding pressure of some equipment is greater than the crushing pressure, and the crushing pressure of some equipment is greater than the feeding pressure. Specific materials need to be designed.
- It is related to the feeding speed. Not all materials have good fluidity. Whether screw feeding or vibration feeding is adopted, the feeding process is a very important factor. Some very fine materials are difficult to feed. At this time, special personalized configuration is needed to achieve the feeding effect.
- Moreover, it is related to the optimization degree of the air mill. There are many manufacturers of air mill, but the fineness made by different manufacturers of the same material is different. Even the fineness made by different models of equipment from the same manufacturer is also different. However, according to experience, the effect of equipment with larger crushing disc is better than that with smaller crushing disc.
- It is related to the operator's proficiency and operation methods. Some equipment start-up requires small pressure operation first and then large pressure operation, and some are direct one-step operation.
It can be seen from the above that there are many factors affecting the limit particle size of the air mill, the most important of which is the physical properties of the raw materials. The drier and more brittle the raw materials, the finer the limit particle size can be achieved. For example, carbon powder, graphite and other raw materials can easily obtain micron or even submicron fine powder if air mill is used because of their good brittleness.
Unveil The Mystery Of Airflow Crusher
Main Features:
Sophisticated High-Speed Airflow Technology: The Airflow Crusher harnesses high-speed airflow impact, crushing materials into super-fine particles, promising smooth and homogeneous end-products.
Scalable and adjustable particle distribution: Experience power in your hands with the Airflow Crusher's capacity to control and vary the fineness of your materials, ensuring they meet your exact needs.
Elegant and Versatile Design: The Airflow Crusher's streamlined, efficient design enhances not only crushing but also bumping and scraping of particles, ensuring maximum productivity.
The forced ventilation inside the airflow crusher can play the role of classification and diffuse heat. The machine is equipped with a slag removal system, which can remove sundries and residual hard grinding stones in the machine during operation, which is conducive to improving product quality, ensuring normal production capacity and reducing wear. The particle size of the product can be adjusted by the air volume in the machine and the glare between the conical part and the blade. It can form a variety of systems with micro powder classifier for different crushing requirements of various minerals.
The airflow crusher and the induced draft fan of the cyclone separator dust collector form a complete crushing system. After filtering and drying, the compressed air is sprayed into the crushing chamber at high speed through the Laval nozzle, and the materials are sprayed at the intersection of multiple high-pressure airflow, After being repeatedly collided, rubbed and sheared, the crushed materials move to the classification area with the updraft under the suction force of the fan. Under the strong centrifugal force generated by the high-speed rotating classification turbine, the coarse and fine materials are separated. The fine particles that meet the particle size requirements enter the cyclone separator and dust collector through the classification wheel to collect the coarse particles and drop them to the crushing area for further crushing.
The airflow crusher is a high-speed airflow composed of high-pressure gas (compressed air, superheated steam or other gases) injected around the crushing chamber and solid material particles. It is constantly impacted tangentially by the airflow injected from different angles, so that the solid particles in the mixed airflow are refined by mutual impact and friction. The product can be free from pollution, and because the temperature generated in the crushing process is very small, it is conducive to crushing materials with low melting point. When crushing toxic, flammable or radioactive materials, superheated steam is often used to prevent outward diffusion. This is because all the materials can be precipitated when the steam condenses. The airflow crusher uses the material to obtain huge kinetic energy under the action of high-speed airflow, resulting in high-speed collision and severe friction between material particles in the crushing chamber. At the same time, the high-speed airflow has shear effect on the material, so as to achieve the purpose of crushing materials.
Different from other pulverizers, airflow mill smashes materials through the impact between its own particles, the impact and shear of airflow on materials, and the impact, friction and shear of materials and other parts under the action of high-speed airflow. Therefore, after air flow crushing, the average particle size of the material is fine, the particle size distribution is narrow, the particle surface is smooth, the particle shape is regular, the purity is high, the activity is large and the dispersion is good; It can crush low melting point and heat sensitive materials and bioactive products (because the air mill is powered by compressed air, the adiabatic expansion of compressed gas at the nozzle will reduce the system temperature). Moreover, if N2, CO2 and other gases are used, it can be crushed in inert atmosphere under special occasions.
Airflow crushing can be operated in sterile state; The production process is continuous, the production capacity is large, and the degree of automatic control and automation is high. However, the production cycle of crushing equipment such as mechanical impact crusher, vibration mill and stirring mill is often long, resulting in low production efficiency; A large amount of heat will be generated during material crushing, resulting in the deterioration of heat sensitive materials; Moreover, the wear and tear of the equipment will pollute the product. Therefore, these mechanical pulverizers can not fully meet people's higher and higher requirements for ultra-fine powder materials. Air flow pulverizing equipment has the trend to replace mechanical pulverizers in the production of ultra-fine powder. Since the air mill came out in the 1930s, through the efforts of many researchers, its structure has been continuously updated and its types have been increasing. There have been flat (or disk) air mill, circulating air mill, collision air mill, fluidized bed air mill, target air mill, supersonic air mill and so on.
There are many kinds of ultra-fine airflow mills with different structures. Each model has its advantages and disadvantages. In recent years, the crushing equipment has been greatly improved on the previous basis, its structure has been continuously improved, and the crushing performance has been continuously improved. In order to meet the higher requirements of the development of information technology, biotechnology and new material technology for the particle size, purity and particle size distribution of powder products, the following aspects should be paid attention to in the research of ultra-fine air flow comminution technology: on the existing basis, improve and optimize ultra-fine air flow comminution equipment, develop new equipment, and pay attention to the matching design of comminution and classification system; There are few large-scale equipment. In the above-mentioned ultra-fine airflow mill, the fluidized bed impinging airflow mill has obvious advantages. Therefore, theoretical research should be strengthened to guide the design of crushing equipment; Because the biggest disadvantage of air mill is low energy utilization, we should find ways to reduce energy consumption and increase energy utilization.
The Use and Screening Advantages of Airflow Sifter Machine
Use of Airflow Sifter Machine:
Airflow sifter machine, also known as air sieving machine or cyclone sieving machine, are used to separate dry powders into different particle size fractions according to particle size and density. Following are some main features of airflow sieving machine:
1. Safety screening: Remove foreign matter and sundries before the product enters the production process, can be used to remove impurities in a large amount of powdery materials, remove coarse particles or powdery materials from fine powders, and ensure product quality before filling.
2. Particle separation: It is used to separate dry powder into different particle size grades according to the size and density of particles. The machine uses a combination of air flow and centrifugal force to separate particles into fractions, typically in the range of 40 µm to 5 mm.
3. Dust removal: It can remove dust and other small particles in the dry powder to improve the quality and safety of the final product.
4. Deagglomeration: It can be used to break up the agglomerated particles, improve the fluidity and handling of the powder, and the strong wind impact can break up the agglomerated materials to a certain extent, making the powder finer and the screening efficiency higher.
Applications of Airflow Sifter Machine:
Airflow sifter machine is suitable for ultra-fine powder with many fibers, high viscosity, light specific gravity, easy to generate static electricity and block the mesh, which solves the problem that ordinary sifter machine cannot sieve. It mainly has the following three functions:
1. Provide material size classification by screening and separating materials that do not meet the required size.
2. Screen materials to remove unwanted materials and reduce contamination risk.
3. Depolymerize the agglomerated powder material.
Specific application industry:
Food industry: Used to screen flour, starch, sugar powder, protein powder, coffee, tea, etc.
Chemical industry: It is used for graded powder granules and remove impurities, such as plastic, rubber, resin, etc.
Metallurgical industry: Used for graded metal powder, alumina, aluminum powder, etc.
Mining industry: Used to screen coal, ore, limestone, etc.
Pharmaceutical industry: Used for screening powder, pills, capsules, etc.
Building materials industry: Used for graded cement, lime, gypsum, concrete, etc.
Environmental protection industry: It is used to treat particulate matter in wastewater and waste gas.
Advantages of Airflow Sifter Machine:
1. It can continuously sieve powdery materials with a fineness range of 80-500 mesh. The sieving efficiency is above 95%, and the dust content in the air is less than 10mg/m3.
2. The sieve penetration rate can reach 85-95%, non-stick net, no blockage, precise sieving fineness, no super mixing phenomenon, and 0 sieve residue (difficult to achieve with ordinary vibrating sieves).
3. High precision and high efficiency: The screening efficiency is high, which can reach more than 95%, and the output can reach 5-10 times or higher than that of ordinary vibrating screens.
4. The screen is installed vertically without load and has a longer service life.
5. Environmental protection: Low noise, low power consumption, continuous operation, no dust pollution.
6. It can be used in conjunction with various mills and wind roads.
7. The equipment is exquisitely designed, durable and easy to maintain.
8.Minimal product loss: Minimize product loss during the screening process, thereby increasing yield and reducing waste.
9.Wide range of applications: Wide range of applications, including particle size classification, particle separation, powder dust removal, etc.
Airflow screen to abandon the traditional principle of gravity operation, in a closed state using high-speed air flow as a carrier, so that the full diffusion of powder particles with enough kinetic energy to the sieve mesh, to achieve the purpose of rapid classification. As the shape of the horizontal so it is also called horizontal vibro screen machine.
The mesh shape is cylindrical, placed in the body, the material through the screw conveyor system, and air mixing, atomization into the cylinder. Through the cylinder within the wind wheel blades so that the material at the same time by the centrifugal force and cyclonic propulsion, which nearly the material jet through the network, discharged from the fine material discharge, can not be over the net material along the cylinder wall from the coarse material discharge port.The airflow screen has the advantages of large output, high efficiency, non-stick network, not blocking the mesh and fine fineness.
Precautions:
1.Airflow sieve is not suitable for screening with viscosity, water content >5%, flammable, explosive and other materials.
2.The same type of airflow sieve,sieving material mesh is greater, the lower the capacity of the corresponding treatment.
3.The following items shall be specified when ordering: The material name and bulk density,input particle size and water content,capacity,sieve mesh,Screening out the materials size should be accounted for about 85% of the total materials.Airflow vibro screen machine can only filter one mesh of materials, for the same time screening several kinds of mesh material, need more machine to take.
Learn More About the Benefits of Fluidized bed Airflow Crusher
The fluidized bed Airflow Crusher is a new model developed and put into use by a German company in the late 1970s and early 1980s. It has the characteristics of low energy consumption, light wear, low pollution, low noise, fine particle size and relatively uniform distribution of products, etc. Resins, phenolic resins, PVC, pigments and dyes, powder coatings, couplers, pharmaceuticals, cosmetics, advanced ceramics, magnetic powders, abrasives, metal powders, food, fragrances, stearic acid, fats, waxes, mineral powders, and pesticides and wettability It is widely used in the production of powder and so on.
Main Advantage
(1) Change the line and surface impact crushing of the traditional Airflow Crusher to the three-dimensional impact crushing of the space, and make full use of the high-speed airflow generated by the jet impact in the flow of materials in the crushing chamber, so that the crushing area is similar to a fluidized state Excellent gas-solid crushing and graded circulation flow effect, which improves the efficiency of impact crushing and the comprehensive utilization of energy. Compared with other traditional methods, the energy consumption is reduced by 30-40% on average;
(2) Since the impact crushing area and the gas-solid flow belt are placed in the middle space of the crushing chamber, the impact and abrasion of the materials driven by the high-speed airflow on the wall of the crushing chamber are avoided, and the most serious wear problem in jet impact crushing is improved, and greatly reduced. the potential for the material to be contaminated;
(3) Protective gases such as high-purity nitrogen or argon are used as the working medium to prevent oxidation, and the closed-loop operation has low gas consumption and reduces costs;
(4) There is no dust flying during the complete closed-loop operation, no pollution to the environment, and no harm to the human body;
(5) After Airflow Crushering, the activity of the powder increases. The energy of the high-speed jet flow in the Airflow Crusher crushing and classification process can not only cause the particles to be impacted and crushed, but also change the internal structure of the particles, especially the surface state, to a certain extent. The energy of the gas flow removes atoms or ions from the particle lattice, causing a mechanical loss of the crystalline structure. In this way, while the powder material is ultrafinely pulverized, the surface energy or internal energy of the particles increases, and the activity of the particles increases. The increase in the activity of the particles is not only beneficial to the chemical reaction, but also beneficial to the adsorption and coating of the particles.
(6) The particle size of the product is fine, the output is large, and it is suitable for large-scale production; the particle size classification accuracy is high, so the particle size distribution of the product is narrow, and the particle size of the product is also easy to adjust.
The fluidized bed Airflow Crusher has many advantages such as low energy consumption, small wear and high classification accuracy, and it is widely used in the current ultrafine grinding equipment. However, because there is no specific theoretical guidance, engineering practice is often used to design the structure of the fluidized bed Airflow Crusher.
People have done a lot of research on the nozzle, but the research on the flow field inside the fluidized bed Airflow Crusher is still limited to theoretical analysis. There are many applications for the pulverization of fluidized bed Airflow Crusher, but in the process of Airflow Crushering, they often rely on experience to adjust process parameters, lacking the support and guidance of theoretical research.
Therefore, it is necessary to further deepen the applied basic research of the fluidized bed Airflow Crusher Airflow Crushering process, and strengthen the understanding and knowledge of the fluidized bed Airflow Crusher pulverization mechanism. With the continuous development of fluidized bed Airflow Crusher pulverization technology and the widening of its application range, fluidized bed Airflow Crusher pulverization technology will play an increasingly important role.
Our Factory
The company has its own factory, which covers an area of 13800m2 and a building area of 9160m2. The factory is equipped with its own finishing workshop, raw material sheet cutting and processing center, welding, polishing, assembly center, special product design and development department, product quality inspection department, It has formed the ability to control the whole process industry chain from design, processing and production, quality inspection to qualified finished products.
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