LM Vertical Roller Mill

Product Features: Integration of multiple functions, more stable and reliable production and more excellent capacity

  • Input Size: 0-70mm
  • Capacity: 3-340TPH
  • Material: Limestone, calcite, dolomite, petroleum coal, gypsum, barite, marble, talc, coal powder, etc.

Based on the absorption of advanced technologies of famous international corporations and 30 years’ experience in grinding mill production, SBM has launched the LM Vertical Grinding Mill which integrates five functions of crushing, grinding, powder selection, drying and material conveying. It is characterized by centralized technological process, small occupational area, low investment, high efficiency, energy conservation and environment protection.

Working Principle

The grinding plate rotates under the action of main motor of LM Vertical Grinding Mill and the reducer. Meanwhile, hot wind enters the vertical mill. After raw materials fall onto the center of grinding plate, they move to the edge of grinding plate under the action of centrifugal force. While passing through the grinding area between roller and grinding plate, bulky materials are broken directly by the pressure of roller while fine materials form a layer where materials crush each other. Broken materials after grinding continue moving to the edge of grinding plate until they are brought away by the airflow at the air ring. For coarse materials which cannot be brought away would fall onto the grinding plate for another grinding. When passing the upper separator, materials in the air flow will be divided into two parts by the blades of rotor, that is, coarse particles and fine powders. Coarse particles would be sent back to have another grinding while the qualified fine powders enter the powder collector with airflow as finished products. For sundries like iron block in materials, when they move to the fringe of grinding plate, because of their heavier weight, they would drop to the lower cavity of grinding mill and next be sent into the discharging port by scarper installed at the bottom of grinding plate and finally be discharged out of the grinding mill.

    As The Term Suggests

    LM Vertical Roller Mill, which is developed and launched by SBM, sets medium crushing, drying, grinding, classifying and other functions as a whole, being the ideal equipment in the grinding industry. LM Vertical Roller Mill is a type of milling equipment widely used in cement, chemical industry, coal and electricity industries, featured by a small size, low energy consumption, little noise, simple process and compact arrangement, etc.

    Product Application

    According to customers’ requirements, SBM success in absorbing foreign experience and world-advanced technology, and in producing our vertical products, with self-owned intellectual property right. LM series vertical grinding mill is widely used in grinding non-flammable and non-explosive materials under 9.3(the Moh’s hardness), such as grinding quartz, feldspar, calcite, talcum, barite, fluorite, iron ore, copper ore quartz, slag, cement clinker, zircon sand, fly ash and carborundum, coal, etc.

    Product Advantage

    • Production of low-cost, high-performance

      Set of crushing, drying, grinding, grading conveyor in one, simple system, compact layout, covers an area of approximately 50% of the milling system, and open lay out,thus greatly reduce the investment costs. Using grinding roller roller compacted milled material directly in the disc, low energy consumption and milling system energy savings of 30% to 40%.

    • Good stability, high reliability

      Grinding roller is not in direct contact with the disc and roller and liner quality material, so long service life, less wear. Mill roller roller sets can turn it over to extend the service life doubled.

    • Product size composition well

      Hot air mill direct contact with the material, drying ability, as the mill system to save a dryer, saving energy and materials to meet different humidity requirements by adjusting the temperature of hot air. Since the short residence time of the material in the mill, easy to detect and control the product particle size and chemical composition, to reduce duplication of milling, stable product quality.

    Operational Principle

    When LM Vertical Roller Mill working, motor driven disc reducer rotating material air lock feeder from the feed inlet and on disc central, hot air from the inlet into the mill.With the disc rotation, the material under the effect of centrifugal force, to the disc edge to move through the annular groove on the disc by grinding roller compacted crushed, crushed material in the disc edge, high-speed airflow with air ring since particles straight into the re-grinding on the disc, the flow of material through the upper separator, the role of the rotating rotor, meals from the cone bucket fell on disc re-grinding, qualified powder with a mill with the air by closing devices to collect dust, represents the product, the moisture-containing material in the process of contact with the hot gas stream is dried, by adjusting the hot-air temperature, can meet the requirements of different humidity materials, to achieve the desired product moisture.

Customer cases

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