Vertical Mill Introduction:
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.
Vertical Mill Structure Composition:
The vertical grinding mill mainly consists of the powder classifier, rollers device, millstones device, compressing device, speed reducer, motor and the shell part. The separator is an energy-saving powder-classification device with high efficiency. The roller is used to grind and crush the materials. The millstone is fixed on the output shaft of the speed reducer where the mill roller grinds the material. The compressing device is the part that provides the grinding force sufficient to crush the material.
Technics Process:
(1).The Open-loop System of the Single-pulse Dust Remover In this system, the raw material is transferred into the raw material storage bin through the bucket elevator, and then, it will be conveyed into the air-lock feeder by the belt conveyor after being weighted and de-ironed. This process can prevent the air from entering while the raw material is being transferred into the mill. The product collection is preformed by a pulse dust remover, which reduces the number of the equipment and simplifies the configuration of the system. The collected product will be transferred into the finished product bin by the screw feeder through the bucket elevator. This system is capable of drying the moist material that entered the mill.
(2).The Closed-loop System of the Cyclone and Pulse Dust Remover The differences between this system and the open-loop system of the single-pulse dust remover are that: the product collection of this system is performed by a group of cyclone dust removers, and part of the air from the induced draft fan is led into the mill for cyclic utilization, which can reduce the work load and the air amount that passes through the dust collector. A pulse dust remover may be used as the final dust removing device.
(3).The Closed-loop System of the Single-pulse Dust Remover The differences between this system and the single collector system are that: the collected product of this system is conveyed into the finished produce storage bin by the pneumatic conveying system. At the same time, most of the air from the induced draft fan is led into the mill for cyclic utilization.
Main Technical Data:
Ore Mill
| 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 | |
Notes:
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.