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.
There are two basic methods for obtaining ultrafine fine powder, one is a physical method. Second, chemical synthesis, and the mixing method based on both methods. Nanomaterials are generally prepared by mixing. The main equipment for the preparation of ultrafine powder is a variety of pulverizer, classifying machines and collection equipment, which mainly said that the ultrafine airflow pulverizer. Ultrafine gas flow pulverizer is an important way to achieve ultrafine fine powder at present.
Ultrafine gas flow pulverizer is the shear of the high pressure air supply, the impact of the material itself, and the impact of the material and other components of the equipment, and the material is pulverized, ultrafine gas flow The pulverizer can operate in a sterile state, the average particle size of the material after gas flow is thin, the particle size distribution is narrow, the particle shape is smooth, has the characteristics of high purity, high activity, good dispersibility, and will not be pulverized Producing heat, suitable for pulverizing low melting points and thermal substances, so ultrafine gas flow pulverizer is very suitable for ultrafine preparations with drugs. According to statistics, about 25% of the superfine gas current pulverizer is used in the pharmaceutical industry.
The control of the superfine gas current pulverizer on the product particle size mainly depends on the particle size size, pulverization pressure, feed pressure, and feed speed. The logic relationship between the ultrafine gas flow pulverizer and the parameters is specifically: the smaller the particle size of the raw material, the higher the pulverization efficiency, the greater the particle size of the raw material, then the pulverization effect is relatively low. In the case of crushing pressure and feed pressure, reduce the feed speed product will be finer, improve the feed speed product will become thick. In the case of the feed speed, it will improve the particle size of the pulverized pressure, reduce the pulverization pressure, and the product will become thick.Therefore, granular control is the adjustment of the parameters of the ultrafine airflow pulverizer in the pulverization process to achieve different pulverized fineness, and it is necessary to measure the relationship between the feed speed and the pressure before crushing and then determine the appropriate pulverization parameters to achieve the customer. Particle size requirements. The particle size size of the product needs to be used to check the fineness and distribution of the fineness, and if the measurement of the electron microscope can be used more accurate, it is of course possible to compete with the international compared granular detector comparison test results.
Ultrafine gas flow pulverizer is a more precise machinery, some details in the daily use and maintenance process still need to pay attention, in order to improve the pulverization efficiency of ultrafine gas flow pulverizer, check whether the raw material should be checked before production Compliance requires that foreign matter is mixed in the material. When producing, the over-fine gas flow pulverizer must maintain a certain number of materials. In the case where the flow rate of the pulverized gas is not changed, the material is large, the gradient current is large; the material is less material in the abrasive cavity, and the grading machine is small. Also, the feeding speed must be kept uniform and stable, and it is not too fast or too slow. The feeding speed is too fast and the device will overload.
It is also necessary to maintain the equipment regularly, often check whether the air supply pressure reaches the pressure required, and the classification motor of the ultrafine airflow pulverizer, after 3,000 hours of equipment, or the long-term stop is re-used Please clean up the inner wall of the inner wall of the ultrafine gas flow pulverizer and the material sticking to the hierarchical portion to prevent the pulverization effect of the superfine gas flow pulverizer.
Shandong Erpa is a manufacturer specializing in the production of ultrafine gas flow. Free consultation is available online, providing free incoming experiments and testing, welcome users to inquire, incompetence experiments, and visit the factory.
The powder equipment industry is an eternal industry coexisting with humans. Science and technology is an important factor in promoting the development of the powder equipment industry and important forces. ALPA powder technology gives full play to the company's research and development strength, relying on science and technology. Force, innovative design high-efficiency airflow crusher powder equipment breaks through technical barriers, successfully obtained national utility model patents. In the future, AlPA Powder Technology will produce more cleaner and discharged airflow powder powder equipment, further promotion to advocate energy-saving and emission reduction, improve the ecological environment.