European Type MTW Trapezium Mill/ball mill/coal mill

Easy maintenance
High efficiency--trapezium mill
Good performance--grinding mill
Type:Trapezium Mill

European Type MTW Trapezium Mill

European Type Trapezium mill is the newest grinding equipment which enjoys many patented technology and reaches the international advanced level. It is the up-to-date grinding equipment designed by our devoted research team, basing on feedbacks and advice from 9518 mill customers and rich experience on mill research. The mill enjoys several patent technology, such as bevel gear overall drive, inner automatic Thin-Oil lubricating system, arc air channeled.

Working principle 
Firstly, raw material should be crushed by jaw crusher to the size specified, and then the crushed stuff is elevated into a hopper from which the stuff is loaded, through the vibrating feeder, evenly and continuously into the grinding chamber for power-processing. After this, the ground stuff is carried by the air into the separator for screening. The fine powder are blow into the cyclone collector and are poured out through the output-powder valve as the final products and the rough stuff after the screening will be recycled back into the grinding chamber for regrinding. The set's airflow system is closely sealed up and circulated under condition of negative pressure.

The new technology as below
1) Bevel gear overall drive: the traditional grinding mill is driven by speed reducer and coupling. It is hard to be installed. And there will be too much noise, and the efficiency is lower. MTW series mill is driven by bevel gear. So its structure is compacter, easy to be installed and more efficient.

2) Inner automatic Thin-Oil lubricating system: the traditional mill adopts grease lubrication, so the lubricating resistance is stronger, the temperature will be higher soon, and the bearing lifespan is shorter. MTW series mill adopts inner L.O. pumps, so the main shaft bearing and bevel gear can be lubricated without an additional lubrication system.

3) Arc air channel: The entire air channel of traditional grinding mill is upright board type. In this case, there bill be stronger resistance when the air impacts the air channel board, and the energy of collisions of air molecules lose heavily, as a result, the air channel will be jammed easily because of the eddy air low, MTW series mill adopts a cambered air channel, the tangential air goes into air channel easily because there is small resistance. And the inner outlet is very good for the grinded material to spread around and avoid grinding material jammed.

4) Cambered shovel with renewable edge: The traditional shove is integral and edge always be worn out quickly, so you have to renew it in short time which affects the working time and wastes too much steel. The shovel edge of MTW series mill adopts high wearable limit alloy, its life will be longer. You only need to change the edge, not the whole shovel. So the steel material is saved. In addition, because the traditional shovel is plane type, the grinded material stacks on the same plane when it is scooped up. So the middle parts of the roller are worn out heavily .But the cambered shovel can scoop up the grinded material in the same vertical plane, which makes the rollers and rings worn equally. At the same time, the grinding efficiency is higher and capacity is higher;

5) Separated cyclone: There is a separated structure between inner piping and mixed air and powder. The efficiency and precision of classifying is promoted highly;

6)No resistance snail shell (small  checking door so that there is not an eddy air flow); in the traditional grinding mill, the checking door of  snail shell is prominent, that means the checking door and snail shell are not on the same plane. So there will be eddy air flow easily come into being .As shell on the same plane. So the eddy air flow is avoided efficiently;

7) Perfect outward appearance; both of the inner part and outer part of the MTW series mill adopt advanced structure and beautiful arc structure design. This makes the mill advanced and beautiful.

Main Technical Data:

Model Specification Name	MTW110	MTW138	MTW175
Quantity of roller	4PCS	4PCS	6PCS
Inner diameter of ring	1100mm	1380mm	1750mm
Rotary speed of main frame	120r/min	96r/min	75r/min
Max. Feeding size	< 30mm	< 35mm	< 40mm
Output size(mm)	1.6~0.045 The fineness is 0.038
capacity(t/h)	3.5~10	6.5~15	11~25
Overall dimension(mm)	8910×6950×9010	9860×8340×10227	13500×11500×9500
Total weight(t)	18	28.5	46