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Roller Mill for Cement Grinding for Sale

There are two distinct type of roller mill. The first is a series of rollers which rotate around a central axis within a drum. The reduction takes place between the rollers and the drum. The second is where there are a series of fixed rollers and a rotating table. The milling takes place between the rollers and the table. This type of mill is used for dry grinding only and accepts only relatively soft minerals. Small machines can have a throughput of only a few tens of kg per hour whereas larger machines are capable of handling up to 40 or 50 tons per hour and occasionally more. Feed size varies according to the machine. The machines are often fitted with screens for closed-circuit grinding. Product size can be controlled by changing screens.

vertical roller mills

The working principle of vertical roller mills refers to the action of 2 to 4 “rollers” rotating on a horizontal grinding table or grinding bowl. Vertical roller mills can handle higher moisture contents in the mill feed and are therefore well suited for blended cements with higher rates of (moist) mineral additions or for separate grinding of mineral additions. Vertical mills can also be used for pregrinding in combination with a tube mill.

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