Generally speaking, the definition of ultrafine grinding technology is to grind 0.1-10um supper-micro powder and its corresponding classification technology. China has studied the ultrafine airflow grinding technology since the 1960s, and tremendous achievements have been achieved in paints, dyes and pigments industry, etc.
Its well- known that the application effects are better if the raw material gets finer and the distribution becomes more uniform. For instance, rutile, as white pigment, its ideal size should be from 0.20~0.35μm due to its optical properties. Special coatings, with optical, electrical, thermal, magnetic, corrosion, radiation and special decorative features, require fine particle size and narrow particle size distribution of functional pigments, such as those coatings used on road symbolic signs, its reflection filler’s average particle size is 0.1 ~ 1μm, while for the high-temperature lubricant coatings, its inorganic mineral filler like graphite, boron carbide, etc, the average particle size should be less than 10μm. Undoubtedly, the process of these pigments and fillers is inseparable from superfine processing technology.
To a large extent，ultrafine grinding technology can avoid some technical difficulties in the industrial production and meet the demands for special materials’ process. By doing this, it caters to the need of industry technology development. Therefore, many scholars at home and abroad, even some of excellent companies in the industry are committed to do research in this area. Currently, those equipments have been developed mainly include mechanical and airflow impact mill. Mechanical equipments consist of vibration mill, centrifugal mill, extrusion mill, Raymond mill, tower mill, high-speed mil, etc. The new generation ultra fine mill developed by SBM, has the following advantages: high energy efficiency, high production and crushing ratio, the very little size of the crushing limit, less abrasion and pollution, wide application and even is beneficial to the development of the ultra fine mill and the correspondent classification equipments which are used to crush special materials.
Ultra fine mill unit with different capacity is prepared to meet different demands for different raw materials, fineness, gradation and purity. It is acknowledged that among the ultra fine technology, airflow crushing technology is the most efficient one to get the smallest particle and will be essential in the modern deep process.
In recent years, Ultrafine grinding technology has got a better application in microelectronics and information technology, bio-chemical, new energy, electronic materials, high-tech ceramics, refractories, polymer matrix composites, aerospace, traditional industrial technology and the utilization and deep process of comprehensive resource,etc.
VSI crusher is the original rock-on-rock crushing equipment used in the third of fourth stage of crushing circuits.
Spiral classifiers are designed to provide the most effective pool area and overflow velocity requirements.
Mobile jaw crusher is designed to exceed the primary crushing in mining, quarrying, recycling industries.
Jaw crusher is mainly used for crushing various ores and large materials with compression strength not more than 320Mpa.
SBM has released the K series portable crushing and screening plants, which contain 72 models that fit various crushing work in metal mines, building aggregates and solid waste treatment fields.