Micro Powder Grinder

Micro Powder Grinder is a kind of ring roller grinding mill, known for its design of three grinding rings. The micro powder grinder is mainly applied to the ultrafine powder processing of brittle non-flammable and explosive materials with medium and low hardness, mohs’ hardness ≤6, such as calcite, chalk, limestone, dolomite, carbon black, kaolin, bentonite, and other materials.

Material pulverization and powder classification are housed within the same unit yet operate independently, featuring a compact structure, adjustable product fineness ranging from 325 to 3000 mesh, easy maintenance, low energy consumption per unit product, and minimal investment. The entire process from material pulverization and classification to finished product occurs within a sealed system. Dust-laden gas undergoes dust removal treatment, ensuring no pollution and making it an ideal green and environmentally friendly equipment.

Working Principle

Micro powder grinder is a complex system composed of multiple key components, mainly include: main unit, reducer, analyzer, blower fan, powder collector, maintenance platform and electric control cabinet. The auxiliary part consists of jaw crusher, bucket elevator, vibrating feeder, storage bin etc.

When the micro powder mill is working, 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 feed pipe, the material is evenly sent to the upper part of the turntable’s loose material tray. 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.

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.

Features & Benefits

1, high efficiency, energy saving: in the case of the fineness of the finished products and the same motor power, the output is more than twice as high as that of the air flow mill, stirring mill and ball mill.

2, Long service life of wearing parts: the grinding roller and grinding ring are forged with special materials, thus the utilisation degree is greatly improved. In the case of the same fineness of materials and finished products, the service life of wear parts is 2-5 times longer than that of impact crusher and turbo crusher, generally up to more than a year, and the service life can be up to 2-5 years when processing calcium carbonate and calcite.

3, High safety and reliability: Because there is no rolling bearing 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 being easily loosened and destroying the machine.

4, High product fineness: the fineness of three-ring medium-speed ultra-fine micro-powder mill can reach D97≤5μm.

5, Environmental protection and cleanliness: It adopts pulse dust collector to capture dust and muffler to reduce noise, which has the characteristics of environmental protection and cleanliness.

Notice: There is a chance that LDHB may make changes on above-mentioned information. Product pictures and parameters about models, data, performances and specifications on this website are for reference only.