Silicon fine powder is made of natural quartz (SiO2) or molten quartz (natural quartz high temperature melting, amorphous SiO2 after cooling), ball mill (or vibration, air flow), flotation, pickling, high purity water Treatment of micropowder processed by multi-course process. Silicon fine powder is a non-toxic, odorless, non-polluting inorganic non-metallic material. Since it has excellent temperature resistance, alkali corrosivity, poor thermal conductivity, high insulation, low expansion, chemical performance, high hardness, and widely used in chemical, electronics, integrated circuit (IC), electrical appliances, plastics , Paint, advanced paint, rubber, defense and other fields. With the rapid development of the high-tech field, silicon micropowder will also enter the new historical development period.In the preparation of the magnetic material, the FW airflow classifier is usually used, which can separate the magnetic material fine powder by particle thickness, segment, and the like. The FW airflow classifier is suitable for fine grading of dry microscale products, graded spherical, sheet-like, and irregular shaped particles, can also be graded for particles of different densities.
The rotor impeller of the FW airflow classifier is a composite bidirectional centrifugal, and the impeller is high-speed, and a negative pressure region is formed at the lower portion of the impeller, and the air in the hierarchical cylinder is entry into the lower portion of the impeller. Along the upper impeller flows from the outlet, the injection of the fine granules flow, under the action of the control ring, the air flow rotation is moved up, and there is a sport in the axial direction and circumferential direction. The airflow flows in the housing space in the hierarchy. Imported into the lower impeller, discharged from the lower impeller outlet, the discharged airflow moves downwardly in the cartridge, and then flows upward through the inner cylinder to the lower air inlet of the impeller, and thus circulating flows to form a cross circulating airflow.
Fine grading of the magnetic material fine powder with the FW airflow classifier is an effective way. It has the following performance characteristics:
● Suitable for fine grading of dry micron - based products, graded spherical, sheet-like, needle-shaped particles, can also be graded for particles of different densities.
● The granularity of the grading product can reach D97: 3 ~ 120 microns, the product particle size is not adjustable, and the variety replacement is extremely convenient.
● Hierarchical efficiency (extraction rate) 60% ~ 90%, highly fluid-based material grading efficiency is high, and the vice versa is reduced.
● Using vertical hierarchical turbine devices, low speed, wear resistance, and low system power configuration.
● Multi-level classification machines are used in seriesWhile producing multiple particle size sections at the same time.
● Can be used in series with polishing equipment such as ball mill, vibration grind, Raymond mill, constitute a closed circuit loop.
After more practical applications, the FW airflow classifier is used for the grading of magnetic materials. The card segments have high advantages. Shandong Erfa FW airflow classifier is stable, high grading efficiency, high collection rate, and many users Consistent praise. Shandong Erfai offers free incoming experiments and testing, and 24-hour call consultation services, welcome to inquire. In recent years, the attention of green environmental protection and sustainable development has been mentioned, whether it is Ningde era, or AlPa powder technology is constantly practicing sustainable development. . In the future, there is still an infinite challenge, but as a large-scale enterprise with social responsibility, ALPA powder technology will continue to adhere to technological innovation, and join hands with partners to achieve economic benefits, environmental benefits and social benefits.
