Coal mill also called dual-rotor mill, two-stage crusher and so on, mainly for coal gangue crushing operations for other minerals also have a good effect, and today mainly speaking about Coal mill liner role, and liner wear and impact resistance properties. Coal mill is the use of crushed stone at stone materials, stone blacksmith carried principle, in order to protect it from wear and tear of equipment racks to be installed on the Coal mill liner, which protects the device, but also because the liner Good replacement, has worn can be replaced at any time, without having to repair or replace equipment. Coal mill liners have two main functions, one of which is to protect the frame, which will help to replace, and the second is the liner above all have teeth that can crush crushed material than just improved. As the grinding process, different degrees of force all places, wear is uneven, generally the lower abrasion wear faster than the upper vertical gangue mill equipment, in order to more long-term use, generally liner system into upper and lower symmetry, Coal mill liner life depends on the material, the nature of the material, the working parameters of the mill, feed uniformity, etc. Therefore, in the medium-sized plant mill liners usually choose high manganese steel, this material once crushed material, which will increase the surface hardness, wear resistance is relatively increased, has a certain toughness, can withstand impact load. At the same time, enhance the work of strengthening the hardness of gangue grinder, mill production capacity to improve and expand the application of market devices. Grand gangue grinder high wear-resistant liner manganese steel, you can better protect and crushing effect, with long time wear and impact resistance properties. Because it is a single-stage grinding mill, so the material coarser, finished size is adjusted through the screen, generally 6-10mm. Single-stage crusher is used to control the mesh grate at the bottom end of the expected size of the machine, due to a single-stage crusher with a screen device, and therefore can not crush the wet material gangue grinder, or likely to cause the paste blocking sieve, causing blockage phenomenon, even serious damage to the motor. In addition, the bottom of the single-stage crusher If hoarding phenomenon, the material for a long time in the crushing cavity volume, the wear on the hammer is very large. Coupled with a hammer crushing the wet material is not effective. Therefore, the traditional single-stage wet grinding mill is not material. The two-stage gangue grinder because there is no screen at the end, so the wet and dry materials can be crushed. Therefore, also known as two-stage wet material gangue grinder. Two-stage gangue crusher wide range of applications of mobile Coal mill, which can crush some hard material, such as shale, coal gangue, coal cinder, slag, etc., can also be some marshy ground materials, such as slime , carbon mud, wet coal, coal, gypsum, ESR stone. Two-stage Coal mill uses two electric motors, power large, internally mounted two sets of rotor, which is both the grinding chamber, the equivalent of twice the raw shale gangue mill crushing monopoly, hammer against the higher rotor constantly turning down the clock, on the lower rotor hammer clockwise constantly flip up, two-stage dual power gangue crusher, crushing intensity, high hardness materials can be broken, but there is no requirement for the moisture content of materials. It can be widely used in the field of brick, coal, coal preparation plant, power plants, smelters, gypsum plant, mining industries. Mobile gangue grinder, Xinjiang Direct Coal mill how much technology is provided by the original grand grand Machinery Manufacturing Co., Ltd., Zhengzhou City. Zhengzhou City grand Machinery Manufacturing Co., Ltd. (www.sdfensuiji.com) strong, credible, in Zhengzhou crushing grinding equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the grand machinery and you hand into the brilliant, for a better future!