Ultrafine powder typically refers to powdered materials with a particle size of less than 10μm. It plays an important role in various industrial productions. With the continuous development of science and technology, many industries now require powder raw materials with smaller particle sizes, higher purity, and no impurities. They also demand tighter control over the particle size distribution. To meet these needs, the application field of ultrafine grinding technology and equipment has gradually expanded. As a result, scientific researchers have been paying more attention to this technology. Air jet milling technology, as an efficient method for preparing ultrafine powders, has become the preferred choice for manufacturing high-performance micro-powder materials.
Features of Air Jet Mill
The airflow pulverizer, also known as the air jet mill or Fluidized Bed Jet Mill, primarily uses high-speed airflow to cause material collisions, shear, impact, and other effects with the impact component for crushing. The materials crushed by the air jet mill have several advantages: uniform particle size, narrow distribution, high purity, smooth particle surface, and regular shape.
Additionally, the airflow crushing process generates very little pollution to the material. It can even achieve crushing in a pollution-free or sterile environment. This makes airflow crushing widely used in industries with extremely high pollution requirements, such as food and pharmaceuticals.
Compared to other crushing equipment, a key advantage of the airflow mill is that it does not release much heat during the crushing process. This makes it particularly suitable for crushing low melting point or heat-sensitive materials. The airflow pulverizer also has a high degree of automation, making it suitable for large-scale industrial production.
Airflow grinding offers various joint operations, such as simultaneous material drying during grinding or spraying a solution for surface coating or modification.
Application Fields of Air Jet Mill
Military and Aerospace
Ultrafine powder materials have important applications in the military and aerospace fields. For example, oxidants and catalysts can be used to make rocket propellants after being treated with airflow pulverization, and their burning speed is more than doubled that of ordinary propellants. In addition, ultrafine powder materials can also be used to make stealth materials such as stealth aircraft and stealth tanks.
Electronic Field
Iron oxide ultrafine powder can be used to make high-performance magnetic materials after airflow pulverization. Silicon oxide ultrafine powder can be used to produce high-performance resistor materials. Ultrafine high-purity alumina powder is widely used in the production of sapphire substrates for LED chips. This substrate has good stability and light transmittance, and does not absorb visible light.
New Energy Field
In the field of new energy, air jet milling technology is used to process materials with fine particle size, narrow distribution, smooth particles and regular shape, high purity and high activity. Their excellent dispersibility makes them widely used in the preparation of battery electrode materials. Airflow pulverization technology has been successfully applied in the field of lithium batteries. Typical applicable materials include: lithium manganese oxide, lithium cobalt oxide, lithium iron phosphate, lithium carbonate, spherical graphite, petroleum coke, asphalt coke, etc.
Application of Molybdenum Powder
After airflow milling, the molybdenum powder has a smaller particle size and a narrower particle size distribution. The morphology is uniform and the bulk density and tap density are improved. The molybdenum powder treated in this way can be widely used in the production of light bulbs, electron tubes and integrated circuits.
Conclusion
Airflow milling technology can not only improve the performance of powder materials, but also effectively improve resource utilization. Its research in micro-nano powder processing is of great significance. With the continuous advancement of technology, air jet milling will show its unique advantages in more fields.
Epic Powder
Epic Powder, 20+ years of work experience in the ultrafine powder industry. Actively promote the future development of ultra-fine powder, focusing on crushing, grinding, classifying and modification process of ultra-fine powder. Contact us for a free consultation and customized solutions! Our expert team is dedicated to providing high-quality products and services to maximize the value of your powder processing. Epic Powder—Your Trusted Powder Processing Expert !