Research and development of vibration grinding machine production at home and abroad
Led Area Light,200W Led Area Light,Led High Area Light,Dlc Area Lights Fuonce-Lighting , https://www.fuoncelighting.com
January 12 14:05:52, 2023
The vibrating mill is a new type of grinding equipment with high efficiency and energy saving. It mainly solves the problem of ultra-fine powder processing in many industries such as metallurgy, chemical industry, non-metallic minerals, medicine, ceramics, new building materials, cement and magnetic materials. Since the powder is ultra-fine or ultra-micronized, the atom or molecule thermodynamically processes the metastable state, so that the specific area is increased, and thus the character is more active, and its optical, electrical, magnetic, thermal and chemical activities occur. Change and have more extraordinary effects in use. These changes are neither solid physics nor atomic or molecular physics. They are a new topic in physics, forming unique ultrafine particle powder physics. Modern science and technology often requires powder particle size as fine as 500 to 12,500 mesh, and some even require particle size up to submicron or nanometer, which is impossible to achieve with ancient traditional crushing technology and equipment. At present, many universities and research institutes at home and abroad regard the ultra-fine or ultra-fine powder as the main research direction of research and development, focusing on how to obtain more fine crushing technology and equipment research. 1. Research status of domestic vibrating mill production The grinding equipment in China includes: ball mill, airflow mill, Raymond mill, agitator mill, roller mill and column mill. The ball mill is still the leading mill in China's cement, ceramics and other industries. Although these devices have many advantages, they also have their own weaknesses. For example, due to the limitations of the process and the processing characteristics of the mill itself, most of the slag, fly ash and high-hardness non-metallic materials with high hardness cannot be processed. Especially the ball mill has the disadvantages of high noise, high energy consumption and environmental pollution. It is unable to meet the fineness required for the production of high-grade cement, high-grade ceramics and other new building materials. The large-scale multi-purpose ultra-fine vibration grinding machine is fundamentally different from the traditional grinding machine in terms of structure, process, grinding shape and principle. It adopts the principle of mechanical vibration, and the whole machine can work under a small energy consumption. Thereby reducing the large power consumption required for material crushing and the like in the ultrafine powder processing. This technical achievement can be said to be a revolution in traditional grinding technology, which is more suitable for ultra-fine and ultra-fine powder processing of brittle materials with higher hardness. At the same time, it has the advantages of low noise, low energy consumption and no pollution to the environment. Due to various historical reasons, China began to engage in this research in the early 1960s, but there are still many technical problems in the design and production of large-scale vibrating mills, such as the life of the supporting spring, the overall rigidity of the grinding body and the connection. Research on the strength, welding strength, wear-resistant materials, etc., and the lack of supporting components and corresponding design standards, the research progress is slow. In the mid-eighties, only Wenzhou Mining Machinery Factory produced small vibration mills. Later, Henan Xinxiang Dongfang Mining Equipment Factory, Yantai Zhuoyue Machinery Transmission Co., Ltd., Luoyang Mining Research Institute, Wuhan University, Xi'an University of Architecture and Technology and other units produced vibrating mills. However, the common problem of the vibrating mill developed by the above-mentioned units is that the processing amount in the Taiwanese is small, the process matching is not ideal in large-scale industrial production, and the iron impurities contaminate the raw materials in the grinding process. Due to many technical problems still exist in processing, grading, decontamination and purification, and surface modification of ultrafine powders, ultrafine powder processing technology and equipment have lagged behind developed countries for a long time. Many products have a certain gap between raw materials and manufacturing processes, and the quality of ultra-fine powder processing has been stagnation for decades. Especially in the fields of cement, building materials, ceramics, paints, coatings, etc., it is difficult to enter the market. Leading technology. The development and promotion of a new generation of energy-saving vibrating grinding equipment can not only fill the equipment vacancies in the ultra-fine powder processing industry, but also accelerate the technological transformation of the old equipment of the enterprise, and fully utilize the processing capacity of new technology equipment to increase the market competitiveness of the products. 2. Overview of research and development of foreign vibrating mills Germany is an early country in the development of vibrating mills. In the early 1940s, although Hochst made a systematic development of the vibrating mill, it was not until the late 1950s that the PALLA series of vibrating mills developed by Klockner-Humboldt-Deutz in West Germany became the best-selling products in Europe. . Since the 1970s, the German National Research Department has treated the ultrafine powder preparation technology as a special research field (Sonderforxchungbereich), and has formed a research group centered on the Claustabl Braunschweig University of Technology and KHDAlpine. According to the data, at present, the variety of vibrating mills produced by Lurge Company is complete, the process matching is good, and the effective volume of the grinding cylinder is 60~2500L, which can meet the needs of different processing occasions. However, due to the relatively good selection of materials in the equipment manufacturing process in Germany and the high technical standards, the rubber-spring composite springs are supported by the vibrating mill body, which makes the production cost of the whole machine high and difficult to sell to developing countries. The vibrating mills manufactured by Japan Central Chemical Machinery, Kawasaki Heavy Industries, and Dagong Products were the single-cylinder grinding technology introduced from West Germany's SIEBTECHNIK company in the early 1960s, and they independently conducted research and trial production. At present, Japan can not only produce batch type, but also produce continuous and horizontal eddy current vibrating mills, which are extremely advanced in terms of production quantity, type, technical performance, theoretical research and new product trial production. The reputation and declaration of many patents, the products are sold to China and Southeast Asian countries. Allis-chalmers in the United States also uses German technology to produce a multi-tube vibrating mill. The grinding tube can reach six tubes, and the output is high. The transmission mode is changed from German single-side transmission to central-driven bilateral excitation. This series of vibrating mills has stable operation, good process matching and wide application range. It has been accepted by many countries in the world and has promoted the development of the world vibrating mill. It is the main equipment for ultra-fine powder processing in the 1990s. . The former Soviet Union's Twilight Production Consortium (CBITAHOK), based on the introduction of German vibrating mill technology in the late 1980s, designed and developed a dual-motor synchronous-driven vibrating mill with a specially designed nonlinear air spring for support. It not only improves the vibration mode of the grinding body, but also has the effect of vibration isolation and noise reduction. It has laid a foundation for the development of large-scale vibrating mills and made breakthroughs in the design and research of vibrating mills. At present, the company's vibrating mills are available in single and double tubes, with a production capacity of 0.3 to 8 T/h, which is widely used in building materials and mining industries in Eastern Europe and South Asia. The Russian Stromnoyed plant has also done a lot of work in the development of vibrating mills. According to reports, the plant has completed the grinding machine design of CaO up to 15t / h, the effective volume of the grinding tube is more than 3000L, but due to the economic reasons of the enterprise, no prototype has been manufactured so far. It can be seen that the manufacture of large-scale vibrating mill technology, especially some key technologies, is still in the hands of a few countries and has imposed a certain degree of restrictions on China. Therefore, the development of China's own large-scale vibration mill will show our scientific research strength and level, and also play an important role in promoting China's national economic construction.