Super-micro gas flow grinding is a more mature ultrafine pulverized device. Unlike other ultrafine pulverized devices, the principle of pulverization is to utilize high-speed airflows, and the energy generated by the nozzle mounted around the cavity, so that the material is intensely impact, collision, friction, and airflow to material. Under shear, pulverized into fine particles. Ultra-micro gas flow is widely used in ultrafine pulverization processing of powder drugs. Its production process continuous, large capacity, and high automation. Moreover, due to the small particle size of the processed product, the particle size distribution is narrow, the purity is high, the particulate activity is high, and the dispersibility is good, and is particularly suitable for the contaminated material that is not allowed to be contaminated.With the development of modern technology, the application industry has put forward increasingly high requirements for ultrafine powder, not only requires ultrafine particle size, but also the particle size distribution is narrow. Therefore, during the preparation of the powder, the solid particles are often desirable in the fluid according to their particle size in the fluid. With the increase in powder fineness and increase in yield, the difficulty of grading technology is increasing, and the powder grading has become the key to the development of powder technology development, so for ultrafine powder The study of body grading technology and equipment is necessary.
The micro-powder grading has a variety of ways, depending on the fractional field grading, centrifugal power field grading, inertial force field grading, magnetic field force grade, electric field grading, magnetic field force field grading, magnetic field strength, thermal gradient field grading, magnetic field power field grading, magnetic field power field grading, magnetic field force grade grading, magnetic field force field grading, magnetic field force field grading, magnetic field force field grading, magnetic field force field level Hierarchical, etc., which can be divided into dry ultra-fine hierarchical and wet ultrafine classification in different manner. At present, the mainstream of research and development of ultra-fine classification equipment and processes is a dry ultra-fine classification.
Dry-type super-fine classification is more airflow class, which is suitable for fine classification of dry microscale products. According to the principles of dry grading, there is currently a centrifugal and inertiality of dry ultra-fine classification equipment in industrial applications. FW gas flow classifier and ball mill ultrafine mechanical impact mill, airflow pulverizer, etc., has been widely used in calcined kaolin, talc, heavy calcium, heavy crystal stone, mica, alumina, zirconia, magnesium oxide, carbonization Fine fractionation of powders such as silicon and lithium cobaltate.
The FW airflow classifier is a centrifugal airflow classifier with flow field regulation device, fine powder cleaning device, and high speed turbine rotor. Its characteristics:
(1) HK-level range: The machine can grade organic and Any material, grading particle diameter D97 = 3 to 74 um, graded spherical, sheet-shaped, and fiber particles; can also be separatedMaterials with large differences.
(2) High grading accuracy: Complete stable grading flow field and reliable seal, the material can be precisely graded D97 / D97 / D75 / D25 = 1.1 to 1.5.
(3) High grading efficiency: the intense eddy current field and the fine powder cleaning device are set, and the fine powder can be rated efficiently, and Newton's efficiency is 70 ~ 95.
(4) High-speed and complete foreign streaming, greatly eliminating the wear of the classified equipment.
(5) A strong dispersion device can be effectively dispersed and graded.
(6) flammable, explosive, and oxidized materials can be used to achieve closed-circuit classification, inert gas circulation using inert gas as a medium.
(7) Multi-stage classification: the 1 to 5 level gas flow classifier in the concession machine, divide the material according to the size of the particle size to produce particle size requirements distribution narrow product.
(8) Full enclosed negative pressure, no dust pollution.
For many years, AlPa Powder Technology has always guided industrial powder equipment to make quality, and continuously sedimentation, creating a process standard for digitalization, welding automation, and molding. Professional manufacturing levels meet the pursuit of customers "safe, efficient and energy saving", so that every ALPA gas flow crusher has become the superiority of contributes.
