Vertical mill

Vertical mill is the important equipment in cement production. Because of the unique advantage of energy saving, vertical mill is not only used in grinding raw materials, but also extensively used in grinding clinker materials and blast furnace slag.

Based on introducing advanced foreign technology and our decades' grinding manufacturing experience, SBM machinery designed the LM series vertical grinding mill. It mixes the best functions of crushing, drying, grinding, conveying, is the ideal equipment in the grinding industry. The LM series vertical mill has been prove the most practical mill by our customers all the over the world.

Process technology

The excellent SBM grinding mill is based on its original design and super materials. SBM endeavor in optimizing every small detail to ensure high possible performance and reliability.

Reliability service vertical mill

The vertical mill comes with automatic remote control system. By inspecting oil cylinder, turning the moving arm, it is easy and convenient to replace roller and liner plate, avoiding the loss because of shut down. The vertical mill works under integral seal system, with the advantages of low noise, libration, power consumption and no dust. It is the excellent grinding mill for you.

High performance vertical mill

The materials directly contact with the hot air inside the mill, it has the benefits of high dryer performance and energy saving. Through temperature control, different humidity materials could be dried effectively. Final materials are discharged promptly avoiding regrinding, it is convenient to control the final product size and inspect chemical analysis, and its quality is more stable. There is an avoiding direct contact device on the roller and liner to prevent devastating attack and strenuous vibration.

Lower your production cost

It mixes the best functions of crushing, drying, grinding and conveying. With compact layout, it only covers half area of ball mill. It suits for outdoors arrangement. The materials are grinded directly by the roller on the grinder. The energy consumption decreases by 30%-40% compared to ball mill. The roller and liner plate is made of excellent materials; it successfully minimizes abrasion and optimizes working life.

Technology process of LM series vertical mill system

The excellent SBM grinding mill is based on its original design and super materials. SBM endeavor in optimizing every small detail to ensure high possible performance and reliability.

Mono-pulse dust catcher, open system of vertical mill

Raw materials are conveyed into the raw material storage by bucket elevator, after weighing, de-ironing, are conveyed by belt conveyor to air-lock feeder, insuring the raw material conveyed into the mill without air included. The final products are collected by a mono-pulse catcher, and then conveyed into the final product bin by the screw feeder. The damp particles are dried by the dryer. All the processes are finished with minimum plants to save energy and production cost.

Cyclone and pulse precipitator, closed-circuit system of vertical mill

This system adopts a set of screw cyclone precipitator to collect final particles. Part of the gases from the draft fan enters into the mill for recycled use, which minimize the work load of the system. Pulse precipitator can be used as final precipitator.

Mono-pulse precipitator, closed-circuit system of vertical mill

The final products are conveyed into the final particles storage by pneumatic conveyor, meanwhile, most of the gases from the draft fan enter into the mill for recycled use.

The Working Principle

The motor drives the grinding table through decelerator. Materials collapse the center of grinding table from feed opening. At the same time, hot air makes the mill in the air inlet. As a result of centrifugal force, materials go on to the advantage from the grinding table. The materials are pulverized from the roller when by pass of the groove about the grinding table. The crushed materials are brought up by vane high-speed airstream, the more expensive particles collapse to the grinding table for regrinding. Once the materials in the airstream pass the separator on the top of the mill , the coarse powder collapse the grinding table for regrinding under the function of rotation rotor. The fine powder happens with the airstream , and it is gathered by the dust catcher. The materials pleased with moisture will be dried once they satisfy the hot airstream. Through adjusting the temperature with the hot airstream, it could meet different material’s requirement, and also through adjusting separator , it may reach proper fineness of materials.

Model		LM130K	LM150K	LM170K	LM190K	LM220K	LM240K
Turnplate diameter (mm)		1300	1500	1700	1900	2200	2400
Capacity (t/h)		10~30	13~40	18~57	23~72	36~114	41~128
Final product size	μm	170~45	170~45	170~45	170~45	170~45	170~45
	mesh	80~325	80~325	80~325	80~325	80~325	80~325
Final product water percentage		≤1%	≤1%	≤1%	≤1%	≤1%	≤1%
Max. input size (mm)		<38	<40	<42	<45	<50	<55
Best water percentage of raw material		<4%	<4%	<4%	<4%	<4%	<4%
Drying needed if water percentage is more than		<15%	<15%	<15%	<15%	<15%	<15%
Input wind temperature (℃)		<350	<350	<350	<350	<350	<350
Output 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
Overall dimension	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

If there is change of the above specification, it subjects to the newest products' specifications.

The most economic design of grinding mill

SBM machinery designs and supplies whole sets of mining and rock crushing and screening equipment, we provide professional and considerate technical support all over the world, including equipment designing, selecting, purchasing, manufacturing, installation, etc. Chat Now