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Vertical Roller Mill VS Ball Mill

Time:2018-03-21 14:05:57

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ertical roller mill is a type of grinder used to grind materials into extremely fine powder for use in mineral dressing processes, paints, pyrotechnics, cements and ceramics. It is an energy efficient alternative for a ball mill.
 
Vertical roller mill can replace ball mill or tube mill used for preparing coal. Vertical roller mill with capacities up to 50 tph are the dominant technology for coal grinding.
 
Grinding process:

The grinding process in ball mill and vertical roller mill differ fundamentally. In a ball mill the comminution takes place by impact and attrition. The comminution in the vertical roller mill takes placeby exposing a bed of material to a pressure sufficiently high to cause fracture of the individual particles in the bed, although the majority of the particles in the bed are considerably smaller than the thickness of the bed.
 
Benefits over ball mill:
1) Smaller footprints
2) Can be erected on site which avoid logistical issues
3) Low wear rate
4) More grinding capacity (Approx. 20~25% more) than ball mill
 
Limitations:
1) complex system
2) Maintenance requirements are higher
3) Higher overall cost
 
High demands on maintenance:
High temperatures and high particulate concentrations make maintenance difficult for vertical roller mills, shock loads, low speed and high vibration elevate the risk of failures-especially those in the roller assembly and dynamic separator.
 
 
Shanghai Clirik Machinery Co.,Ltd can supply you the best vertical roller mill, if you want to get more detailed product information and prices, CLIRIK recommend that you get in touch with us through online chat. Our customer service 24 hours a day online to serve you with the answers, but also enable you to save more money and time.
 

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