Large-sized vertical roll mill

The utility model relates to a large-sized vertical roll mill in the building material industry, which is composed of a drive part, a grinding disc part, a grinding roll part, a tensioning device part, a separator part, a machine frame part, a sealing air part and three gates, wherein the drive part is installed on the lateral lower part of the machine frame part, the grinding disc part is installed on the middle part of the machine frame part, and the grinding roll part is installed on the grinding disc part. The tensioning device part is installed on the right side of the machine frame part, the separator part is installed on the top of the machine frame part, a pipeline of the sealing air part is installed on the upper part of the machine frame part, and the three gates are installed on the upper part of the separator part. The manufacturing cost of the large-sized vertical roll mill is low, the production efficiency is enhanced and the operation is safe and reliable. The utility model has the advantages of low manufacture cost, high production efficiency, reliable and safe operation, high efficiency on powder selection, reasonable grain composition, favorable firing and favorable separating effect; a grinding disc forms a slot shape and a grinding roll forms a tyre shape so that the maintenance and the replacement are convenient with prolonged service life of a lining board.