Airflow mill is one of the ultrafine powder mills, and is also one of the important equipment in the crushing industry. After the fluidized bed pulverizer compresses, after filtration, after drying, the fluidized ultrasonic air flow is introduced through the nozzle, so that the material is fluidized, and the accelerated material is integrated in several nozzles. The collision, friction, and cut the microcarriers of the particles.
The crushing material is transported to the impeller grading area, under the action of the grading wheel, and the fan effort, the coarse powder returns to the pulverizing chamber according to its own gravity If the qualified fine powder enters the cyclone collector with the airflow, the fine dust is collected by the bag dust collector, and the purified gas is discharged from the air blower. Flat airflow mill is simple, easy to manufacture due to flat air flow milling, easy to manufacture, so it is widely used.
Structure: Mainly composed of a crushing chamber, a nozzle port, a discharge opening, a gas flow outlet, a compressed air inlet, a grading area, and the like.
Working principle: Transform the compressed air or overheating steam into a high-speed airflow through the nozzle, when the material is sent to the pulverizing chamber by the feeder, a strong impact and dramatic friction make the material are pulverized Become a super fine product. It is widely used in ultra-fine powder mills of non-metallic minerals and chemical raw materials. The particle limit of the product depends on the solid content in the bus stream. Under the opposite proportion of unit energy consumption, the product produced by gas flow is more refined, and the particle size distribution is even more uniform, the activity is also large, and the dispersion is better than the price. Since the adiabatic expansion of the compressed gas during the crushing process, some low melting points or thermal materials can be used for grinding processes.Jet Mill classification is currently five types in industrial, they can be divided into horizontal disc (flat plate) airflow mill, cyclic tube gas flow grinding, target gas flow grinding, anti-jet flow grinding and Fluidized Bed Jet Mill.
Airflow Crushing Principle: Airflow Crushing Principle, Dry Objectable Compressed Airflow or Excessive Nozzle, High Speed Jet Drive Material High Speed Motion, Collision, Friction and Compression, and Crushing Materials Reaches the grading area with the gas flow, The material to achieve fineness is ultimately collected by the collector. If the material required is not satisfied, return to the crushing room, continue to smash until the desired fineness is reached, and the setting is stopped. Speed ladder near the nozzleVery high, most of the crushing occurs near the nozzle. In the pulverizing chamber, the collision frequency of the particles and the particles is much higher than the collision frequency of the particles and the device wall. In other words, the main crushing effect of gas flow mill is a collision or friction between the particles.
