Electrolytic manganese dioxide is an important and key raw material in the production of zinc-manganese dry batteries. Taking a No. 5 alkaline manganese battery as an example, the amount of electrolytic manganese dioxide used in the battery is more than 9g. The quality of electrolytic manganese dioxide powder has a decisive impact on the performance of battery discharge and storage. At present, the grinding device of electrolytic manganese dioxide finished product generally adopts Raymond mill, but ordinary Raymond mill has many disadvantages. So, how to grind electrolytic manganese? Guilin electrolytic manganese grinding mill manufacturer Guilin Hongcheng has made many improvements to the grinding device of battery grade electrolytic manganese dioxide, and has launched a special electrolytic manganese flake grinding device, which will be introduced in detail for you today.
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At present, the grinding device for electrolytic manganese dioxide finished products generally adopts Raymond mill. It is carbon steel, and the pressure of blast wind is low. The disadvantages of the mill with this structure are: ①The main parts of the mill have poor wear resistance, such as the upper part of the air duct is easy to be worn, and the material directly contacts with the air duct whose inner wall is made of metal material, which increases the iron content of the product ; According to the comparison of materials before and after grinding, the iron content of the product has increased by 30-40ppm. ② The specificity of electrolytic manganese dioxide is large, y = 4.83g/cm3, some materials cannot be blown by the wind, so some materials are accumulated in the lower part of the air duct and cannot be sent out, accounting for two-thirds of the capacity of the air duct. Due to the large proportion of materials, the grinding capacity per hour is only 1.5 tons, the grinding output is low, and the production cost is high.
Guilin Hongcheng provides a manganese dioxide mill for electrolytic manganese milling with high blast pressure, less material accumulation in the base return air pipe, less machine wear, high milling output and low production cost. The main components of the milling device are the cyclone separator, the return air pipe, the inner wall of the main machine outer cylinder cover, the base return air pipe, and the inner wall of the particle storage bin are lined with a nitrile rubber layer, which has good sealing performance and high air pressure. In addition, the grinding roller assembly and grinding ring of the new main engine are made of high chromium alloy materials. The advantages of this kind of mill are: ①Because the inner wall of the main parts is lined with a butadiene rubber layer, not only the wear resistance of the main parts is good, the machine wear rate is small, and the material will not contact the metal inner wall of the parts, The iron content of the product is reduced. Through the comparison of the materials before and after grinding, the iron content of the product is reduced by 10-20ppm; ②By being lined with a butadiene rubber layer, the machine has good sealing performance and the blast pressure is increased. The return air pipe of the base has less material accumulation and less wear and tear, which reduces the iron content of the product, high milling output and low production cost.
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