In terms of grinding systems, we have developed targeted, mature, reliable, safe and efficient grinding technologies and supporting equipment targeting the different physical and chemical characteristics of various types of materials in various industries, such as moisture, grindability, product fineness, and safety. The core equipment is HVM vertical grinding, which processes materials from high humidity to dry, from exceptionally difficult to grind to easy to grind, and the fineness of products ranges from coarse to fine, covering a wide range of fields, There are various types of materials processed. Provide a complete set of scientific and reasonable process plans and equipment selection for the vertical grinding machine powder system, and provide integrated powder processing solutions.
Scheme IntroductionHVM vertical mill can produce both coarse powder and ultrafine powder, and can produce materials with different product fineness requirements, ranging from 2-5mm coarse powder (such as shale, raw material for brick making in the new wall material industry, sand making in the construction industry, etc.) to 15 micron ultrafine powder with a passing rate of 97% (such as heavy calcium powder in the paper industry and activated carbon ultrafine powder in the chemical industry). The product fineness adjustment has strong arbitrariness and wide adaptability.
Solution
For the production of coarse powder, the vertical mill needs to adopt a powder concentrator structure with low resistance and anti-wear, rather than a powder concentrator with large blade density and complex rotor structure, resulting in unnecessary investment and increased production and maintenance costs. At the same time, due to the large number of large particles, necessary anti wear treatment and structural design of the powder selection machine need to be carried out to achieve reasonable powder selection output and energy consumption;
For the production of ultrafine powder, the selection of vertical mills should focus on the design and optimization of the powder selection machine. Due to the high resistance of powder selection at this time, it is necessary to strictly control the fineness while also preventing problems such as coarse particles, excessive wear of blades, and abnormal vibration caused by high internal resistance in the mill. Therefore, for materials with different product fineness requirements, it is necessary to calculate and analyze the material and gas flow in the vertical mill, especially in the powder concentrator area, based on the characteristics of the materials, in order to determine a reasonable structure of the powder concentrator (such as the form of the rotor and the number and angle of the blades, as well as the number and angle of the stationary blades), At the same time, necessary auxiliary measures should be taken to control (such as using sealing fans for gas sealing, effectively controlling the coarsening of large particles).
