HLM Vertical Grinding Mill

HLM vertical grinding mill and vertical roller mill is a high-efficiency energy-saving advanced pulverizing equipment integrating drying, pulverizing, grading and conveying, which has been researched and developed by Guilin Hongcheng Company for more than 20 years.

Hongcheng HLM vertical grinding mill has the advantages of high grinding efficiency, low power consumption, large feed particle size, easy adjustment of product fineness, simple equipment process, small footprint, low noise, small dust, convenient use and maintenance, and convenient operation. It has the advantages of low cost and low consumption of wear-resistant materials.


Max feeding size:50mm

Capacity: 10-150t/h

Fineness: 200-325 mesh (75-44μm)

Vertical Grinding Mill Advantages

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Stable product quality. Because the material remains in the mill for a short time, the powder has a uniform particle shape and good fluidity. The iron content is very small and easy to remove, it has high whiteness and purity.

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High grinding efficiency and low energy consumption, compared with ball mills, the energy consumption is 40%-50% lower; the single-machine production capacity is large, and low-valley electricity can be used;
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Environmental Protection. The whole system of HLM vertical mill has little vibration and low noise, it is sealed and operated under negative pressure, no dust spillage, and it can basically realize a dust-free workshop.
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Easy maintenance and low operating cost. The grinding rollers can be removed from the machine by hydraulic means, and the maintenance space is large. The roller cover can be turned over to extend the service life. The mill starts without material, avoiding start-up problems.
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High reliability. The roller limit device is used to prevent vibration caused by material interruption during mill work. The new type of grinding roller seal is reliable, no need for sealed fan, reduces the oxygen content in the mill, has excellent explosion suppression performance.
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It integrates crushing, drying, classification and transportation. The process flow is simple, the system equipment is small, the structure is compact, and the area is small, which is 50% of the ball mill. It can be placed outdoors, and the construction cost is low, which directly reduces the investment cost of the company.
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High degree of automation. It adopts PLC automatic control system and can realize remote control, which is easy to operate, convenient to maintain, and reduces labor cost.
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The drying capacity is strong, and the moisture content of the feed is high, up to 15%. The vertical mill system does not require an additional dryer, saving equipment investment costs and energy costs. By adjusting the temperature of the hot air, materials with different humidity can be dried and ground at the same time.

Vertical Grinding Mill Structure and Principle

HLM series vertical grinding mill for super fine powders is equipped with: main mill, feeder, classifier, fan, piping, silo for material feeding, piping system, electrical cabinet, collector system, etc.

vertical grinding mill work process:

  1. The motor drives the reducer to drive the grinding disc to rotate, and the material to be ground is fed into the center of the rotating grinding disc by the air-locking feeding device. Under the action of centrifugal force, the material moves to the periphery of the grinding disc and enters the grinding roller table.

  2. Under the action of the pressure of the grinding roller, the material is crushed by extrusion, grinding and shearing.

  3. At the same time, the wind is sprayed upwards evenly at a high speed from the air ring around the grinding disc, and the pulverized materials are blown up by the high-speed airflow at the wind ring,and the coarser material is blown back to the grinding disc for re-grinding, while the fine powder is brought in by the wind.

  4. The grading machine is used for grading, and the qualified fine powder flows out of the mill along with the air flow, and is collected by the dust collection equipment to be the product.  so the cycle completes the whole process of grinding operation.

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HLM vertical grinding mill adopts standard modular design to manufacture pressurizing device. As the capacity of the mill increases, the number of grinding rolls will increase accordingly (2, 3, 4 or 6 grinding rolls can be used) With fewer standard module components, a series of products with a variety of capabilities to meet the requirements of different processing of materials of different fineness and production capacity.

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Dust Collection System


Single stage dust collection system I

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Single stage dust collection system II

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Secondary dust removal system

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Vertical Grinding Mill Technical parameter

HLM Series Vertical Grinding Mill (Chemical Industry)

ModelGrinding ring diameter(mm)Capacity(t/h)Feed SizeRaw material moistureFineness(10-40 μm)Final Powder Moisture(%)Power(kw)
HLM10/2X8001-30-15<5%<97%≤155
HLM16/2X12502-70-20<5%<97%≤1132
HLM17/2X13003-120-25<5%<97%≤1180
HLM19/2X15004-160-35<5%<97%≤1250
HLM21/2X17006-240-35<5%<97%≤1355
HLM21/3X17507-270-35<5%<97%≤1400
HLM24/2X19007-280-35<5%<97%≤1450
HLM29/3X24009-350-40<5%<97%≤1560
HLM29/4X240010-390-40<5%<97%≤1630
HLM30/2X280011-450-50<5%<97%≤1710

Note: Raw Material Grinding Index18kWh/t。

HLM Raw Meal Vertical Grinding Mill Specifications and Technical Parameters

ModelGrinding ring diameter(mm)Capacity(t/h)Raw material moistureFinenessPower(kw)
HLM30/2250085-100<10%R0.008<12%800/900
HLM34/32800130-160<10%1120/1250
HLM42/43400190-240<10%1800/2000
HLM44/43700190-240<10%2500/2800
HLM50/44200240-300<10%3150/3350
HLM53/44500320-400<10%3800/4200
HLM56/44800400-500<10%4200/4500
HLM60/45100550-670<10%5000/5400
HLM65/65600600-730<10%5600/6000

Note: Raw Material Grinding Index≤13kWh/t

HLM Vertical Clinker Mill

ModelGrinding ring diameter(mm)Capacity(t/h)Raw material moistureSpecific Surface AreaPower(kw)
HLM24/2P190035-45≤2%220-260m2/kg(R0.08≤15%)560
HLM26/2P200042-55≤2%630
HLM30/2P250060-75≤2%900
HLM34/3P280090-110<≤2%1400
HLM35/3P2800130-160≤2%2000
HLM42/4P3400160-200≤2%2500
HLM44/4P3700190-240≤2%3000
HLM45/4P3700240-300≤2%3800
HLM53/4P4500300-380≤2%4800
HLM56/4P4800330-420≤2%5300

Note: Raw Material Grinding Index≤18kWh/t

HLM Vertical Slag Mill

ModelGrinding ring diameter(mm)Capacity(t/h)Raw material moistureSpecific Surface AreaPower(kw)
HLM26/S200015-18<15%≥420m2/kg560
HLM30/2S250023-26<15%900
HLM34/3S280050-60<15%1800
HLM42/4S340070-83<15%2500
HLM44/4S370090-110<15%3350
HLM50/4S4200110-140<15%3800
HLM53/4S4500130-150<15%4500
HLM56/4S4800150-180<15%5300
HLM60/4S5100180-200<15%6100
HLM65/6S5600200-220<15%6450/6700

Note: Raw Material Grinding Index≤25kWh/t

HLM Vertical Coal Mill

ModelGrinding ring diameter(mm)Capacity(t/h)Raw material moistureCoal Powder FinenessPower(kw)
HLM10/2M8003-5<15%R0.08=10%-15%45/55
HLM14/2M11007-10<15%90/110
HLM16/2M12509-12<15%110/132
HLM17/2M130013-17<15%160/185
HLM18/2M130014-19<15%185/250
HLM19/2M140018-24<15%220/250
HLM21/2M170023-30<15%280/315
HLM24/2M190029-37<15%355/400
ModelGrinding ring diameter(mm)Capacity(t/h)Humedad de Materia PrimaCoal Powder FinenessPower(kw)
HLM28/2M220036-45<15%R0.08=10%-15%450/500
HLM29/2M240045-56<15%560/630
HLM30/2M250045-56<15%710/800
HLM34/3M280045-56<15%900/1120
HLM42/4M340045-56<15%1400/1600
HLM45/4M370045-56<15%1800/2000
HLM50/4M420045-56<15%2500/2800
HLM56/4M480045-56<15%3150/3500

Note: Raw coal Hastelloy grindability coefficient 50~70


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