中文字幕一本到无线

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      Products

      Products

      LGM/LGSM VertiMill

       Vertical Roller Mill,Vertical Mill,citic Vertical Mill

      300000 ~ 1200000 TPY slag/cement  grinding production line

      Since the 1990 s began to make vertical mill. Since 2001, according to the market needs and the needs of the development of enterprise products, set up special research and development of large vertical mill group, on the basis of the study abroad a variety of models combined with China's national conditions to determine the vertical grinding machine, the independent development of innovative research and development design with independent intellectual property rights of LGM series slag raw material vertical mill, roller mill and cement and vertical mill as the host of slag grinding process system.

      LGMS series vertical mill slag cement and cement raw materials LGM series vertical mill is a comprehensive large-scale grinding equipment, set of crushing, grinding, classifying, drying, material handling five functions into one, with a focus on process, small footprint, less investment, energy saving features.

      Vertical Mills
      2001 - Mass Production of large ATXO equipment for FLSmidth in Denmark
      2005 - In cooperation with LOESCHE produced the largest vertical mill in Asia
      2005 - Cement Slag Mill - Model LGMS4624 (Jiangsu Leida Co.)
      2006 - In cooperation with FLSmidth produced a large OK Vertical Mill

      Vertical Roller Mill Key benefits

      • 20-50% less energy use than ball mill systems
      • For portland cement, slag and blended cements
      • High productivity with stable, reliable operation
      • Easy maintenance; low maintenance costs
      • Effective drying when grinding blast furnace slag or blended cements with wet components
      • Consistent cement quality with easy-to-adjust quality parameters
      • Long lifetime
      • Simple, compact layout
      • Proven technology

      How Vertical Roller Mill works

      The ZTIC mill combines the drying, grinding and separation processes into just one unit, which simplifies the plant layout. And because it operates at a low noise level, outdoor installation is feasible – substantially reducing civil construction costs and improving the working environment.

      Vertical Roller Mill Design advantages

      • Simple layout and fewer machines in the mill circuit ensure high run-factor and low maintenance costs
      • Roller and table profile improve operating stability and reliability
      • Special design features for iron removal during slag grinding minimise wear
      • Optimal wear protection on all internal surfaces extends lifetime
      • Flexibility to operate with reduced number of rollers guarantees long-term availability
      • Segmented roller wear parts made of the hardest possible material without the risk of cracking; very suitable for hardfacing

       An ounce of prevention

      Even though the  mill is very sturdy, you should still be sure to:

      • Stop wear from air blasting in good time
      • Keep seals in good condition to avoid wear and false air
      • Change filters and keep lubrication systems in good condition
      • Adjust roller stoppers to avoid roller table contact
      • Change nitrogen pressure in hydraulic accumulators according to grinding pressure
      • Fix oil spills/leakages and change hoses as needed  

      Normal maintenance

      We recommend visually inspecting the mill every two weeks, both while running and stopped.

      Major maintenance

      Major jobs include reversal/change of segments and/or hardfacing. A full hardfacing usually takes 3-4 days. For clinker grinding, hardfacing is usually required annually; for slag grinding, expect to hardface every 3-4 months.
      The mill’s swing-in/out roller support system makes it easy to maintain the rollers and suspension system.
      Swinging one roller out and changing the seals takes 24 hours, while changing a hydraulic cylinder takes 10-16 hours.
      The mills have 2 access doors for ease of maintenance, and entry is possible as soon as the mill is stopped. Any jobs done inside the mill have to wait until it is cooled down – typically 3-4 hours. 

      Watch the Mill Maintenance animation:

      Rollers and wear liners

      The rollers and the wear liners of the grinding table are segmented and therefore easy to replace when worn out. Roller wear segments can easily be reversed or replaced while inside the mill – that is, without taking rollers out of the mill. The separator reject cone is provided with rail and trolley for that purpose.

      By reversing the wear segments of the rollers to use both sides of the segments, you can achieve higher utilisation.

      In case of instability

      Instability in the grinding process may occur in the case of:
      1. Excessive material in the mill
      2. Lack of material in the mill
      3. Extremely dusty feed
      4. Worn segments
      Solve it by:
      1. Adjusting mill feed
      2. Increasing mill gas flow
      3. Adjusting dam ring height and
      4. Ultimately, re-welding or replacing segments
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