Vertical Roller Mill

Detailed introduction

Applications:

Cement, coal, power plant desulfurization, metallurgy, chemical industry, non-metallic mineral, construction material, ceramics.

Product Introduction

High drying efficiency, Low running cost, Good environmental effect Yuhong Vertical Roller Mill integrates crushing, drying, grinding, classifying and conveying together, and it is specialized in processing non-metallic minerals, pulverized coal and slag. Its coverage area is reduced by 50% compared with ball mill, and the energy consumption is saved by 30%-40% similarly.

Features

1. Low Investment Cost.
This mill itself can crush, dry, grinding, classifying, so the system is simple, and occupation area is about 50% of ball mill system. In addition, it can be installed outside, so it will reduce a large number of investment costs.
2. Low Operation Cost.
⑴ High efficiency: roller compacted materials directly onto the grinding disc, so power consumption is low. Compared with ball mill, it saves energy consumption by 30% ~ 40%. ⑵ Less wear and tear: As the roller is not in direct contact with the disc, and material of the roller and liner is high quality, so life lime is long.
3. High Drying Ability.
As the hot air inside contacts directly with the material, drying ability is higher, and it saves energy. By regulating the air temperature, it can meet requirements with different humidity.
4. Simple and reliable operation.
⑴ It is equipped with automatic control systems, so remote control makes it easy to operate. ⑵ It is equipped with one device,which prevents the roller from contacting with the liner directly, and avoids the destructive impact and severe vibration.
5. The stability of product quality.
As the material stays in the mill for a short time, it is easy to detect and control the product particle size and chemical composition, to reduce duplication of milling, stable product quality.
6. Maintenance convenience.
By repairing fuel tank, rotating the arm, it is fast to replace the roller sleeve, and liner, and reduce the downtime loss.
7. Environmental protection.
It is with small vibration, low noise, and the overall sealing. The system works under negative pressure, so there is no dust going out. It meets the requirements of the state Environmental Protection.

Working Principle

Vertical roller mill has two pairs of grinding rollers, each pair of roller composed of two narrow rollers, mounted on the same axis and can rotate at different speeds. There are two circular disc slot, and roller to the tire shape, work pressure in the tank. Disc roller and the relative sliding velocity between small and roller can swing, even if the roller sleeve and the disc after the liner wear can guarantee a good abrasive, will not affect the grinding effect. Roller symmetrical structure, one side can be upside down after use and wear. Material grinding process: hydraulic pneumatic roller device through the pressure applied to the material on the crushing of materials, the materials have been moved to crush the edge of disc, from the disc around the nozzle from the exhaust air to improve these materials to Separator.Meal to separate returns after a concentrated mill, fine powder was collected in the precipitator unloading. In the gas flow is small, the meal can not be increased to enhance air flow, they would fall through the nozzle discharged outside the mill, bucket elevator to be transported to the feeder of vertical mill and was re-grinding mill feed people.

This cycle features of the way there:

ring by adjusting the air valve, can change the product fineness can shide mill bed load material uniformity and stability, improving the grinding efficiency;

coarse particles in the external circulation, helps reduce Fan power consumption and overall system power.

Technical Data

Model		1300	1500	1700	1900	2200	2400
Disc diameter(mm)		10~30	13~40	18~57	23~72	36~114	41~128
Output(t/h)		170~45	170~45	170~45	170~45	170~45	170~45
Product fineness	μm	80~325	80~325	80~325	80~325	80~325	80~325
Product fineness	mesh	80~325	80~325	80~325	80~325	80~325	80~325
Product moisture		≤1%	≤1%	≤1%	≤1%	≤1%	≤1%
Input size(mm)		<38	<40	<42	<45	<50	<55
Material moisture(normal)		<4%	<4%	<4%	<4%	<4%	<4%
Material moisture(drying)		<15%	<15%	<15%	<15%	<15%	<15%
Wind temperature import(℃)		<350	<350	<350	<350	<350	<350
Wind temperature		70~95	70~95	70~95	70~95	70~95	70~95
Main motor power(KW)		185~220	250~280	355~400	450~500	710~800	800~900
Dimensions	L mm	3500	4200	4700	8500	10200	11700
	W mm	3400	3900	4500	5600	6700	7700
	H mm	5800	7100	8300	8800	10600	12200
Weight(t)		48	75	90	100	125	160

Notes:

Material should be with hardness less than 7 in Mohs.
Hot air is only necessary if outlet moisture is required to be less than inlet moisture.
When grinding mateiral that is difficult to grind, please use the largest power.

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