As the admixture of cement and commercial concrete, slag micro powder can improve the strength of cement and concrete, improve the workability of concrete, increase the strength and reduce the hydration heat of concrete. The LM vertical mill of SMMVIK Machinery can process the slag fine powder, and the fine discharge particle size can reach 650 meshes.
From the aspect of powder wear energy, the height of fine powder area is directly related to the powder wear energy. The specific surface area index of the same type of slag, which is too high or too low, is in linear proportion to the low or high output per hour of the fine powder mill and the high or low energy consumption. Advantages of vertical mill for fine slag:
1. Low construction cost. The vertical mill process is simple. Compared with the ball mill system, the floor area can be reduced by about 50%, the construction cost can be reduced by about 70%, and the building area is small and the space occupied is small.
2. The vertical mill integrates crushing, drying, grinding and sub conveying, with simple system and compact layout. It can be arranged in the open air, making the construction cost low.
3. Easy and reliable operation. It is equipped with automatic control device, which can realize remote control. It is simple to operate. It is equipped with a device to prevent direct contact between the roller sleeve and the grinding disc liner plate, so as to avoid crushing and violent vibration.
4. Strong drying capacity. The vertical mill uses gas to transport materials. When grinding materials with large moisture content, the inlet air temperature can be controlled to make the product reach the final moisture content. Materials with moisture content up to 12-15% can be dried in the vertical mill. Even if the ball mill is used for drying, only materials with moisture content of 3-4% can be dried.
Other grinding machines and equipment of SMMVIK Machinery can also handle slag fines, but the discharge granularity and capacity are different. Discharge particle size of fine powder vertical mill: 80 - 325 mesh, output range: 7 - 128t/h, discharge particle size of MTW European version mill: 0.038mm, output range: 3.5 - 25t/h, application fields: cement, coal, power plant desulfurization, metallurgy, chemical industry, non-metallic ore, etc. Each mill has a relatively fine discharge particle size for reference.
