The working principle and main purpose of jet mill
With the rapid development of superfine powder related industries, fluidized bed jet mills, which are widely used in various industries due to their special properties, will surely become an important member and focus of non-metallic industrial machinery and equipment. research direction.
Jet mill, also known as jet mill/mill, jet mill, jet mill, spiral jet mill, jet mill, micro jet mill, fine jet mill. Compared with impact mills, jet mills are widely used due to their large production capacity, high degree of automation, fine product particle size, narrow particle size distribution, high purity, high activity, and good dispersion, etc., especially suitable for harder ones. Materials and special materials.
Fluidized bed jet mill works with feeding device, cyclone, bag filter and suction fan to form a complete grinding line. Compressed air flow after filtration and drying would go into milling chamber from nozzles and meet in the center area, where material would be impacted, milled and sheared.
Milled powder would go up to classifying area by airflow. The high-speed rotation of classifier wheel would separate oversize powder and fine powder. Qualified fine powder would go through the wheel impeller and output cyclone or bag filter, while oversize powder would fall to milling area to be milled again.
The fluidized bed jet mill is currently the leading model of jet mills. Compared with other pulverizing equipment, it has obvious advantages and represents the mainstream direction of jet pulverization equipment. It is widely used in chemical industry, minerals, metallurgy, abrasives, ceramics, Refractory materials, medicine, pesticides, food, health products, new materials and other industries. Some jet mills use steam as kinetic energy, which we call “steam jet mill.” Particle size could be up to 0.2μm, with stronger kinetic energy. It is usually used to treat power plant fly ash, steel slag, chemical raw materials, etc. These plants can provide sufficient steam and energy can be fully utilized.
According to the design structure, Jet Mill can be roughly divided into: fluidized bed Jet Mill (including vertical and horizontal types); Disc Jet Mill. ALPA could produce jet mill with big capacity of 10T/H, could also produce mini milling machine/small vertical mill for laboratory. Equipped with fully automatic PLC control.
Installation and operation: Before use, check whether all fasteners of the machine are tightened. Check whether there are hard objects such as metal in the crushing chamber of the machine. Turn on the machine, confirm that the operation is normal, and put the material from the material port. When the unloader is in operation, it is strictly forbidden to reach into the exit of the unloader to prevent hand injury. The speed of the grading impeller cannot exceed the specified value, otherwise the grading wheel and motor will be destroyed. The safety valve must be checked regularly.