There are two types of vertical roller coal mills:
1) HGM series vertical roller coal mill---Three rings and four rings micro powder vertical roller coal mill
Grinding materials of our HGM series vertical roller coal mill include various stones and rocks, such as: Kaolin, limestone, calcite, marbles, barites, gypsums, pyrophyllites, dolomites, calcium carbonates, pigments, clays, coals, carbon black, activated carbons, feldspar, talc, mica, carbon black, petroleum coke, alumina, chromic oxide, quartz, cements, up to more than 100 materials.
Features of HGM series vertical roller coal mill:
1. The vertical roller coal mill of HGM series is high efficient (twice as much as jet mill, mixing grinder and ball mill)
2. The spare parts of vertical roller coal mills can serve much longer time (2-3 times longer than that of impact mill or turbo mill.
3. High safety and reliability of the micro powder mill (no rolling bearings and screws in the grinding cavity, so no problems caused by the wear of bearings or screws)
4. The HGM Vertical roller coal mills are characterized by high fineness (final size: 325-3000 mesh, D97<5 micron)
5. Environment-friendly
2) YGM series vertical roller coal mill
YGM series vertical roller coal mill is suitable for processing various non-flammable and non-explosive mineral materials with Moh’s hardness less than 9.3 and humidity less than 6%, it is widely used in the fields of metallurgy, construction, chemical industry, mining, highway construction etc,. The granularity of the finished powder size can be adjusted between 50 and 325 mesh (315-45 micron). Examples of processing materials include quartz, feldspar, barite, calcite carbonate, limestone, talc, ceramic, iron ore, carborundum, bauxite, rock phosphate, coal and other materials, total about 400 kinds of materials.