Product Description

MTW Series Grinding Mill can be used to process limestone, calcite, marble, talcum, barite, gypsum, lime, coarse whiting, attapulgite, dolomite, coal, feldspar, quartz, graphite, coal gangue, fluorite, slag, cement clinker, bauxite, kaolin, cement, activated carbon, petroleum coke, coal ash, iron oxide red etc. OBM series European technology trapezium mill is the lastest grinding mill, which absorbs the European advanced technology and many engineers’ ripe experience.

Features

1.Bevel gear overall drive: 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. OBM series mill is driven by bevel gear, so its structure is compacter, more efficient and easier to be installed.

2.Inner automatic Thin-Oil lubricating system: the traditional mill adopts grease lubrication, so the lubricating resistance is stronger, the temperature will become high soon, the service life of the bearing is shorter. OBM series mill adopts inner L.O.pumps, so the main shaft bearing and bevel gear can be lubricated without additional lubrication system with good stability and reliability.

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

4.Cambered shovel with renewable edge: The traditional shove is integral and the edge is always worn out quickly, so you have to replace it in short time, which affects the working time and wastes too much steel. The shovel edge of OBM series mill adopts high wearable limit alloy, its life will be longer. You only want 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 is worn out heavily. But the cambered shovel can scoop up the grinded material in the same vertical plane, which makes the rollers and ring worn equally. At the same, the grinding efficiency is higher and capacity is higher with good product particle size.

5.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, which 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 a result, the energy waste is bigger. OBM series mill make the inner surface of checking door stay with the inner surface of snail shell on the same plane, so the eddy air flow is avoided efficiently;

Technical Data

Type	MTW110	MTW138	MTW176
Quantity of roller (PCS)	4	4	5
Inner diameter of ring (mm)	Ф1100	Ф1380	Ф1750
Rotary speed of main frame(r/min)	120	96	75
Max. Feeding size(mm)	< 30	< 35	< 40
Output size (mm)	1.6～0.045 The fineness is 0.038	1.6～0.045 The fineness is 0.038	1.6～0.045 The fineness is 0.038
capacity (t/h)	3.5～10	6.5～15	11～25
Overall dimension (mm)	8425×7933×8642	9860×8540×10227	12182×8835×9916
Total weight (t)	18	28.5	46

Name		Item	Unit	Technical data
				MTW110	MTW138	MTW176
Motor of mainframe		Type		Y280M-6	Y315M-6	Y355M1-6
		Power	kw	55	90	160
		Rotate speeding	r/m	980	990	990
Adjustable motor of classifier		Type		YCT200-4A(YCT200-4B)	YCT200-4B(YCT225-4A)	YCT225-4A(YCT225-4B)
		Power	kw	5.5(7.5)	18.5	30
		Rotate speeding	r/m	125～1250	125～1250	125～1250
Motor of centrifugal induced draft fan		Type		Y250M-4	Y280M-4	Y315L2-4
		Power	kw	55	110	200
		Rotate speed	r/m	1480	1480	1480
Auxiliary machine	Elevator	Type		TH250	TH315	TH315
		Type of motor		Y100L2-4	Y100L2-4	Y112M-4
		Power	kw	3	3	4
		Rotate speed	r/m	1430	1440	1440
	Jaw crusher	Type		PE250×400	PE250×750	PE250×750
		Type of motor		Y180L-6	Y180L-6	Y200L2-6
		power	kw	15	15	22
		Rotate speed	r/m	970	970	970
	feeder	Type		GZ2F	GZ3F	GZ4F
		power	w	150	200	450

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