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Dolomite ultrafine grinding machine
Application scope: Calcium carbonate crushing processing, gypsum powder processing, power plant desulfurization, non-metallic mineral powder productio
Product details
Product Features
The ultrafine powder mill (also known as calcite micro powder mill, limestone micro powder mill, calcium carbonate micro powder mill, talc micro powder mill, barite micro powder mill, gypsum micro powder mill, marble micro powder mill, feldspar micro powder mill, fluorite micro powder mill) is mainly suitable for the ultrafine powder processing of non flammable and explosive brittle materials with medium and low hardness, Mohs hardness ≤ 6 levels, such as calcite, chalk, limestone, dolomite, carbon black, kaolin, bentonite, talc, mica, magnesite, illite, pyrophyllite, vermiculite, sepiolite, attapulgite, zeolite, diatomaceous earth, barite, gypsum, alum, graphite, fluorite, phosphate rock, potassium ore, pumice and more than 100 other materials. The finished particle size of the fine powder is fine. Adjustable between 325-3000 mesh, the output can reach 0.4-4.5 tons per hour.
The powder mill production line usually consists of a hammer crusher, bucket elevator, storage bin, vibrating feeder, micro powder mill host, variable frequency classifier, dual cyclone powder collector, pulse dust removal system, high-pressure fan, air compressor, electrical control system, etc. Large pieces of material are crushed by a hammer crusher into a feed particle size suitable for ultrafine grinding machines (about 1cm), and then the fineness required for production is achieved by adjusting the speed of the grinding machine analyzer. After manual packaging into bags, automatic micro powder packaging machines can also be configured and different models of grinding machines can be selected according to needs.
Performance advantages
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Efficient and energy-saving
When the fineness of the finished product and the power of the motor are the same, the output is more than twice as high as that of the air flow mill, stirring mill, and ball mill. -
Long service life of vulnerable parts
The grinding roller and grinding ring are forged from special materials, greatly improving their utilization. Generally, it can last for more than one year, and when processing calcium carbonate and calcite, its service life can reach 2-5 years. -
High safety and reliability
Due to the absence of rolling bearings and screws in the grinding chamber, there is no problem of bearings and their seals being easily damaged, and there is no problem of screws becoming loose and damaging the machine. -
Environmental protection and cleanliness
Using a pulse dust collector to capture dust and a muffler to reduce noise, it has the characteristics of environmental protection and cleanliness.
Structural composition
The structural composition of ultrafine grinding machine
The main body of the ultrafine grinding machine consists of a host, a reducer, an analyzer, a fan, a bypass powder collector, a maintenance platform, and an electrical control cabinet. The auxiliary part consists of a jaw crusher, a bucket elevator, an electromagnetic vibration feeder, a storage bin, etc.
What precautions should be taken when operating an ultrafine grinding machine
1. Regularly check the bearing temperature. If the temperature is too high, check whether the lubrication and transmission parts are normal, and whether the rolling distance is too tight. Promptly identify the cause, take corresponding measures, and in severe cases, stop the machine for inspection.
2. Regularly check the tightness of the drive belt. If the belt is too loose, it will reduce the transmission efficiency and affect the grinding effect. If it is too tight, it can easily cause bearing heating, increase power consumption, and reduce the service life of the drive belt.
3. All transmission components must be securely fastened, and special tools should be used for disassembly or installation. It is prohibited to directly strike with tools such as hammers.
5. Don't forget to check the pneumatic components. After the plastic grinding machine is turned on, it is necessary to regularly check whether there are any air leaks or damages in the pneumatic components, pneumatic circuits, and connections. At the same time, the air supply pressure should be checked to ensure that it meets the requirements. The use of synchronous belts should also be checked regularly. If any problems such as tightness, looseness, jumping, deviation, or severe wear are found, they should be adjusted, repaired, or replaced in a timely manner. The oil storage level of the oil mist device in the gas source triad should be checked regularly, and 20 # spindle oil must be added to avoid blockage of the small holes in the pipeline.
Working principle
The working principle of ultrafine grinding machine:
During operation, the main motor drives the spindle and turntable to rotate through a reducer, and the roller pins on the edge of the turntable drive dozens of grinding rollers to roll in the grinding ring raceway.
Large pieces of material are crushed into small particles by a hammer crusher and then sent to the storage bin by a hoist. After passing through a vibrating feeder and an inclined feeding pipe, the material is evenly delivered to the upper part of the turntable's bulk tray.
The material disperses around the circumference under the action of centrifugal force and falls into the raceway of the grinding ring, where it is impacted, rolled, and ground by the ring rollers. After being processed into powder through three layers of raceway, the high-pressure fan sucks in external air into the machine through suction and brings the crushed material into the powder selection machine.
The rotating impeller inside the powder selector causes the coarse material to fall back and be re ground. The fine powder that meets the requirements enters the cyclone powder collector with the airflow and is discharged by the discharge valve at the bottom, which is the finished product. The airflow with a small amount of fine dust passes through the pulse dust collector and is discharged through the fan and muffler.
Technical Parameter
| Model number | Average diameter (mm) | Number of grinding rings (layer) | Number of grinding rollers (pieces) | Spindle speed (r.p.m.) | Feed particle size (mm) | Finished product particle size range (μ m/mesh) | Finished product output (t/h) | Dimensions (L * W * H, m) | Total power (KW) |
|---|---|---|---|---|---|---|---|---|---|
| HGM80 | 800 | 3 | 21 | 230~240 | ≤20 | 5-47 | 0.4-4.5 | 13.9x4x6.2 | 145-165 |
| HGM90 | 930 | 3~4 | 24~32 | 200~220 | ≤20 | 5-47 | 0.6-6.5 | 14.7*4.8*7.2 | 185-204 |
| HGM100 | 1035 | 3 | 27 | 180~200 | ≤20 | 5-47 | 0.7-7 | 18*4.6*8.6 | 263 |
| HGM100A | 1035 | 4 | 34 | 180~200 | ≤20 | 5-47 | 1-8.5 | 18*4.6*8.6 | 263-290 |
| HGM125 | 1300 | 4 | 40~44 | 135~155 | ≤20 | 5-47 | 1.5-12 | 14*9*10.25 | 380-430 |
| HGM1680 | 1680 | 4 | 30~40 | 120~130 | ≤20 | 100-9 | 3.8-30 | 26.3*7.5*11.9 | 600-700 |
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