In the cold winter, the installation of large-size Raymond mill usually consumes a longer time than in summer, construction waste crusher because the foundation takes a longer period to make the cement solidified completely. Today, I would like to talk about the matters of Raymond mill maintenance in winter. 1. First, in winter we should use the winter-dedicated grease to lubricate the grinding roller assembly and other parts, because the winter-dedicated grease is uneasy to freeze in the cold weather. 2. Second, when to boot, we should warm the machine up for five minutes and then proceed to production. When starting, ultrafine mill should start up the analyzer first, then power on the draught fan and finally boot the main engine. 3. The wind is stronger in winter, so the dust collecting bag of Raymond mill in outdoor must be tightened and pated once a day to keep ventilating. If the bag is airtight, it will cause the Raymond mill no production. Raymond Mill Raymond mill adopts the principles of suspended-roller rolling and winnowing selection to grind materials. So we say that the utilization of wind is very crucial. Due to heat expansion and cold contraction, at this time, the screws of Raymond mill can be tightened a little more. We should also check the connection part of the flange whether it is sealed properly, and ensure there is no air leakage. Some materials are much easier to be processed in winter than in summer, but for most materials, vertical roller mill the change in production is not obvious. To conclude, in winter, we should pay more attention to the booting and maintenance of Raymond mill, especially for those users who process materials outdoors. In addition, we should choose the grease dedicated for winter, in case of the grease getting frozen and leading to serious abrasion to the grinding roller.