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At present, grinding equipment of large-scale difficulties have been proposed, significant scale is really a sign of grinding gear level, represents the highest degree of the business. So foreign mill suppliers, which include Loesche, Pfeiffer will be the vertical roller mill millstone do good. Laixi Fu corporation do vertical mill millstone maximum diameter is up to 6.9 meters, the highest capacity 1200t/h. but grinding technology equipment development still faces some important troubles, like: higher moisture material how wear? Slag, ore as well as other high abrasive the way to resolve the issue of steady production? Fly ash and higher mobility material to wear additional fine?
Liu Zihe stated, the key technology of cement grinding technology development method of ball mill, roller press + ball mill and vertical roller mill three, single power consumption, the highest for the 40-45kWh/t ball mill, roller press + ball mill for 30-35kWh/t, may be controlled in 25~30kWh/t. vertical roller mill
With all the technology development of vertical mill, vertical roller mill grinding cement accounted for the ratio within the world has changed: in 2004~2005, the vertical mill grinding cement accounted for the ratio within the globe for 26%, 2008~2009 for 61% years, the rationality of 2011~2012 years reached 83%.2009 Toure Saif of Germany's International Conference on expert opposition mill grinding cement must also support this change.