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HRM Vertical lime Mill

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HRM Vertical lime Mill

Vertical mill description

HRM vertical mill is a new energy-saving product introduced by our company to solve the technical problems of low output and high energy consumption of industrial mills. The mill is a kind of equipment that combines drying, grinding, and powder selection as a kind of milling equipment. It is widely used in the fields of coal chemical industry, thermal power, steel and non-metallic mineral grinding.

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PRODUCT DETAILS
TECHNICAL PARAMETERS

Vertical mill application

Non-metallic mineral grinding: It is applicable to industrial milling fields such as limestone, lime, barite, talc, gypsum, cement raw material, slag, cement, etc.

Working principle

The motor drives the disc to rotate through the speed reducer so that the material falls from the feed inlet to the center of the disc and the hot air enters the mill from the intake port. With the rotation of the turntable, under the action of centrifugal force, the material is brought up to the edge of the grinding disk by the high-speed air circulation of the wind ring, and the large particles are directly dropped onto the grinding disk and re-grinded. The material in the air flow enters the upper separator when rotating the rotor. Under the action, the coarse powder falls from the cone to the grinding disc and is reground. The qualified fine powder is milled together with the air flow and collected by the dust collection device. It is the product, and the moisture-containing material is dried during the contact with the hot gas. By adjusting the hot air temperature, it can meet the requirements of different humidity materials and reach all the required product moisture. By adjusting the separator, the required fineness of different products can be achieved.

The main structure

HRM vertical mill is mainly composed of the following components (see Figure 1), falling coal pipe, pulverized coal export gate valve, dynamic separator device, spring-loaded device, high-efficiency roller device, bowl-grinding device, and stone coal Collection devices, transmissions, bases, housings, etc.
The dynamic separator is an efficient and energy-saving powder selection device. The roller device is used to grind and crush the material. The grinding device is fixed on the output shaft of the speed reducer and is the area where the roller rolls the material. A spring-loaded device is a component that provides grinding pressure to a grinding roller and provides sufficient pressure to the grinding roller to crush the material.

Advantages

Small footprint, low investment costs

Adjustable loading force, strong applicability, high milling efficiency

Strong drying capacity

Product quality is stable

High selection accuracy

Easy to maintain

System process

Single pulse dust collector open circuit system
The raw materials of this system are lifted to the required height through the bucket elevator. After the iron is removed, the materials are put into the middle warehouse. Under the pre-determined amount of feed, the closed dosing feeder weighs the materials and feeds the materials. Into the vertical mill for grinding. Vertical mill grinding qualified products are collected by a box-type pulse bag filter to reduce the number of equipment and simplify the system configuration. After the product is collected, it is fed into the finished silo through a bucket elevator using a screw feeder. This system is characterized by its simple structure, little equipment used, low equipment investment, no drying heat source, low operating cost, relatively dry materials (<4% moisture), and no need for drying operations in the system.

HRM Vertical mill (lime) specifications, technical parameters

Model		LM130M	LM150M	LM170M	LM190M	LM220M	LM240M
Disc diameter（mm）		1300	1500	1700	1900	2200	2400
Output（t/h）		10~15	16~22	20~28	26~35	35~45	40~50
Pulverized coal fineness（R0.08）		<15%	<15%	<15%	<15%	<15%	<15%
Pulverized coal moisture		<1%	<1%	<1%	<1%	<1%	<1%
Input size（mm）		<38	<40	<42	<45	<50	<55
Material moisture(drying)		<15%	<15%	<15%	<15%	<15%	<15%
Wind temperature import（℃）		<350	<350	<350	<350	<350	<350
Wind temperature exit（℃）		75~95	75~95	75~95	75~95	75~95	75~95
Main motor power（KW）		185	250	315	400	500	560
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）		46	75	94	100	122	157

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