Processed Materials:
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Marble mill
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Coal powder plant
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Slag Grinding Mill
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Barite Mill
Applications:
It is widely used in power plants, thermal power plants, cement plants, steel plants and other industries that require pulverized coal fuel and desulfurized stone powder.
Capacity: 4-100T/H
Input size: <50mm
Performance Advantages
Limit device for preventing the direct contact between grinding roller and grinding table, to avoid the severe vibration of the mill caused by the collision between roller and tables； With hydraulic roller turning-out device, the grinding roller can be turned out of the machine completely to ensure enough maintenance space,which replace and repair easy-wear parts easily in a short time.
High grinding efficiency and low energy consumption, saving 40% -50% power consumption compared to ball mill；Special structure design of grinding roller and grinding table, large diameter of grinding roller, large grinding area, hydraulic automatic pressure device.
The material stays in the mill only for 2-3 minutes, and pollution of the finished product is small；The chemical composition and fineness of the product can be quickly determined and corrected, and the quality is stable；The product has a narrow particle size distribution, uniform particle shape, and good fluidity.
It integrates crushing, drying, grinding, powder selection and conveying into one, with simple process flow and compact layout；Small footprint, can be arranged in the open air, low construction cost.
Energy efficient：Adopt fully automatic control system, can realize remote control, easy to operate.
The whole system is operated under negative pressure without dust overflow，and grinding roller grinding table does not directly contact during the grinding process, so the noise of whole system is low.
Working Principle
The main motor drives the grinding table to rotate through the reducer, and at the same time, the wind enters the mill from the air inlet. The material falls through the screw feeder's discharge port and falls in the center of the grinding table. When grinding the roller table area, it is crushed by the grinding roller, and the bulk material is crushed directly, and the fine-grained material is extruded to form a material bed for inter-particle crushing. The crushed materials continue to move toward the edge of the grinding table until they are taken away by the strong air flow at the wind ring, and the larger granular materials fall back onto the grinding table to continue crushing. Under the action of the blade, the coarse particles are returned to the grinding table for grinding. Qualified fine powder is discharged with the air flow and collected by the system's powder collector. The collected powder is the product of the ultra-fine vertical grinding. When the iron and other debris mixed with the material move to the edge of the grinding table with the material, they cannot be blown up by the wind due to their own weight.
Specifications
Hot Sale: patented technology, high productivity, environmental protection and energy saving
FAQ
Can the LM Vertical Coal Grinding Mill be used for cement-plant coal preparation?
Yes. The LM Vertical Coal Grinding Mill is a mature choice for cement-plant kiln and dryer tower pulverizing, grinding coal to the fineness for kiln firing. Its explosion-proof design and hot-air drying fit cement process and synergize with calcination waste heat to cut coal use.
What is the role of the LM Vertical Coal Grinding Mill hydraulic system?
The LM Vertical Coal Grinding Mill hydraulic system applies and stabilizes roller pressure and lifts or drops rollers. Lifting eases maintenance access; in operation pressure is fine-tuned by bed thickness to optimize efficiency. The unit has accumulators to cushion shock, protecting rollers and bearings.
Can the LM Vertical Coal Grinding Mill use waste heat to cut energy?
Yes. The LM Vertical Coal Grinding Mill can use kiln-tail or boiler waste heat as the drying source, replacing part or all of hot-air-furnace coal to cut fuel and emissions—a key low-energy, low-carbon path, especially for cement and power synergy.
What is the maximum feed size of the LM Vertical Coal Grinding Mill?
The LM Vertical Coal Grinding Mill requires raw coal generally below 15 mm; oversize raises grinding load and roller impact. Fit crushing and screening before the mill to remove gangue and debris for smooth, efficient operation and longer wear-part life.
How to handle high-temperature or CO alarms in the LM Vertical Coal Grinding Mill?
Rising temperature or CO suggests smoldering or spontaneous combustion. Immediately reduce hot air, increase seal-air, inject inert gas if needed, and check coal moisture and debris. Never open the casing under alarm—follow the emergency plan handled by professionals.
How much energy can the LM Vertical Coal Grinding Mill save versus a Ball Mill system?
The LM Vertical Coal Grinding Mill integrates bed-compression grinding with hot-air drying; versus traditional open-circuit Ball Mills it typically saves 25%–35% energy. At equal output, power and steel consumption drop markedly, with sizable long-run savings—ideal for plant retrofits.
