LM Series Vertical Mill

LM Series Vertical Mill

LM Series Vertical Mill

LM Series Vertical Mill

LM Series Vertical Mill’s Overview:

Vertical mill is a type of milling equipment widely used in cement, chemical industry, coal and electricity industries, featured by a small size, low energy consumption, little noise, simple process and compact arrangement, etc, setting crushing, drying, milling and selecting in one. Therefore, it’s the preferred equipment for grinding and milling raw materials for a modern cement plant.

LM Series Vertical Mill’s  Highlights:

(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. 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%. 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. It is equipped with automatic control systems, so remote control makes it easy to operate. 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.

LM Series Vertical Mill’s  Working principle:

Motor runs under the condition that speed reducer drives Nether millstone. The materials fall into the center of device through lock air feeder, and hot air comes into mill through air inlet. Under the function of centrifugal force, the materials when they come by the annular chute. The grinded materials will be taken up by air circulation and the bigger powder will fall down for regrinding. Qualified powders will be collected by collecting device as to be final product. Materials containing water will be dried when they contact with the hot air. Different humidify materials can be dried to the requirement through adjusting the temperature of hot air. Adjusting the separator can get the required fineness powders.

LM Series Vertical Mill’s Applications:

1. LM Series Vertical Mill can process gypsum powder

Gypsum powder is formed by heating gypsum stone. When the stone is heated, the water is released, and the fine, white powder is left. This powder can be used for cooking, fertilizer, drywall, cement, plaster and paint. The mineral gypsum is used the most in its powdered form because it can strengthen material or increase viscosity, but the mineral itself is very low on the Mohs Hardness Scale, placing at a two or three. LM Series Vertical Mill plays an important role in the gypsum power application. It has the advantages of simple structure, high productivity, low energy consumption, low operating cost and so on.

2. LM Series Vertical Mill can process calcite powder

Calcite is one of the most important minerals. It is extremely common and found throughout the world in sedimentary, metamorphic and igneous rocks. In the form of limestone and marble it makes up a significant portion of Earth’s crust and serves as one of the largest carbon repositories on our planet. The properties of calcite make it extremely useful as: construction materials, abrasives, agricultural soil treatments, construction aggregates, pigments, pharmaceuticals and more. LM Series Vertical Mill can efficiency process calcite, and make use of calcite fully.

3. LM Series Vertical Mill can be used in bauxite grinding

Bauxite ore is important mineral and can be used many fields. Bauxite mining is common in the world and bauxite ore grinder is necessary mining equipment in the mining of bauxite. Bauxite is a rock composed mainly of aluminum oxide and aluminum hydroxide minerals. It most often occurs as a residual soil material in tropical and subtropical areas. Generally we choose LM Series Vertical Mill to crush the raw materials to be required fineness before used to produce aluminum.

LM Series Vertical Mill’s  Specifications:


Contents|Data\Model LM130K LM150K LM170K LM190K LM220K LM240K
Disc Dia. (mm) 1300 1500 1700 1900 2200 2400
Capacity (t/h) 10~30 13~40 18~57 23~72 36~114 41~128
Output fineness micron 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
Product moisture ≤1% ≤1% ≤1% ≤1% ≤1% ≤1%
Max.input size (mm) <38 <40 <42 <45 <50 <55
Best input moistrure <4% <4% <4% <4% <4% <4%
input moistrure(drying required) <15% <15% <15% <15% <15% <15%
Inlet air temperature (℃) <350 <350 <350 <350 <350 <350
Outlet air temperature (℃) 70~95 70~95 70~95 70~95 70~95 70~95
Main mill power (KW) 185~220 250~280 355~400 450~500 710~800 800~900
Dimension Lmm 3500 4200 4700 8500 10200 11700
Wmm 3400 3900 4500 5600 6700 7700
Gmm 5800 7100 8300 8800 10600 12200
Weight (t) 48 75 90 100 125 160


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

Coal Mill

Contents|Data\Model LM130M LM150M LM170M LM190M LM220M LM240M
Disc Dia. (mm) 1300 1500 1700 1900 2200 2400
Capacity (t/h) 10~15 16~22 20~28 26~35 35~45 40~50
fineness (R0.08) <15% <15% <15% <15% <15% <15%
Coal powder moisture <1% <1% <1% <1% <1% <1%
Max.input size (mm) <38 <40 <42 <45 <50 <55
input moistrure <15% <15% <15% <15% <15% <15%
Inlet air temperature (℃) <350 <350 <350 <350 <350 <350
Outlet air temperature (℃) 75~95 75~95 75~95 75~95 75~95 75~95
Hardgrove index of raw coal (HGI) >55 >55 >55 >55 >55 >55
Main mill power (KW) 185 250 315 400 500 560
Dimension Lmm 3500 4200 4700 8500 10200 11700
Wmm 3400 3900 4500 5600 6700 7700
H mm 5800 7100 8300 8800 10600 12200
Weight (t) 46 75 94 100 122 157

Notice: Any change of LM Series Vertical Mill technical data shall not be advised additionally.