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Application of energy saving and high efficiency ultrafine Raymond mill in fine grinding of non-metallic mine
In recent decades, with the rapid development of high and new technology and high and new material industry, mineral, especially non - metallic mineral powder
The grinding technology is developing rapidly in the direction of ultrafine grinding.Ultrafine powder is deficient in particles.It is widely used for its advantages of less entrapment, high solubility, high activity, large specific surface area, fast reaction rate and good filling performance
In high performance ceramics, microelectronics and information materials, advanced refractories, high performance lubricants and other related fields.Therefore,Super fine grinding technology plays an important role in the development of modern high and new technology and high and new material industry.
Designed by GuiLin HangDa Mining Machinery Co.,LTD.the HDX ultrafine Raymond mill is a kind of fine grinding and ultra-fine grinding equipment with simple structure, convenient maintenance, high energy utilization rate, high fine grinding efficiency and even product particle size distribution.
The equipment has been widely used in the fine grinding, ultra-fine grinding and related fields of non-metallic minerals such as kaolin, graphite, mica, heavy calcium carbonate, etc., and has achieved good application results.
I Structure analysis of HDX ultrafine Raymond mill
In order to meet the needs of the development of fine grinding and ultra-fine grinding equipment and the special requirements of the market, it has been researched since 1990s
The HDX ultrafine Raymond mill was originally used in the strip of kaolin, and has been widely used in the fine grinding of kaolin, mica, graphite and other non-metallic minerals.
The structure analysis of HDX typeHDX ultrafine Raymond mill is mainly composed of motor, reducer, impeller classifier, cyclone collector, crusher and electric control cabinet.
There is no air box structure in the HDX type ultrafine Raymond grinding mill, the base has no air duct, the grinding chamber is full of negative pressure, the powdery material stays at the bottom of the grinding chamber, the shovel picks up the material to the grinding surface before entering the air duct and being absorbed into the analytical machine for sorting.
The output of hard material is low, the material layer is relatively thin, and the powder material is produced in the middle of the process. There are air ducts around the base of the traditional mill, and the powder material is easy to be raised, resulting in the lack of material in the grinding surface. The equipment has fast loss, high vibration, high noise and low output.
HDX ultrafine Raymond mill is a kind of machine specially designed for all powder and hard material.
II Characteristics of fine grinding of non-metallic mine
Nonmetallic minerals, such as kaolin, graphite, mica, and heavy calcium carbonate, are found in different industrial fields.It is widely used, and different fields have different requirements of grinding characteristics. So it is necessary to choose a suitable grinding method to achieve the special requirements for non - metallic mines.
1. fineness
Fineness is an indicator of the size and type of mineral particles. Since non-metallic minerals are often used in coatings, paper making, the fineness is a very important index because of the special field such as packing. For example, kaolin, which is used as a coating.The content of -2um accounted for 90%-95%, and the content of -2um accounted for 78%-80% when used as paper filler.
2. the purity
Fine powders of nonmetallic minerals generally require higher purity.Only non-metallic minerals with high purity can achieve the maximum performance in industrial applications.For example, for non-metallic minerals such as graphite, "stage grinding”," stage selective" process allows the graphite content to reach more than 95%.
