Ultra-fine annular roller mill

Principle of Operation

After being chilled, filtered, and dried, compressed air is formed into supersonic airflow through nozzles, which is injected into the crushing chamber, causing the material to become fluidized. The accelerated material converges at the intersection of several nozzle jet streams, resulting in intense collisions, friction, and shearing to achieve ultra-fine particle crushing. The crushed material is then transported to the impeller classification area by an ascending air current. Under the action of the centrifugal force of the classifier wheel and the suction force of the fan, the coarse and fine powders are separated. The coarse powder returns to the crushing chamber due to its own gravity for further crushing, while the qualified fine powder is carried by the air current into the cyclone collector. The ultra-fine dust is collected by a bag dust collector, and the purified gas is exhausted by the induced draft fan.

Performance Advantages and Features

Based on the traditional fluidized bed mill design, incorporating our company's self-flowing classification technology, it significantly outperforms domestic and international fluidized bed air jet mills.

1. Low energy consumption, 30% more energy-efficient compared to traditional fluidized bed air classifier crushers.

2. Equipped with an internal self-flowing micro-powder grading machine, the particle size distribution is concentrated, and there are no oversized particles in the finished product.

3. The equipment features a compact structure with minimal land area requirement.

4. The crushing box is free of leftover materials and blind spots, making it easy to disassemble, clean, and disinfect. It is convenient to switch between different varieties and meets GMP requirements.

5. Low-temperature, medium-free crushing is particularly suitable for the crushing of materials with low melting points, thermal sensitivity, sugar content, and volatile substances.

6. Flammable and explosive materials can be completely enclosed and crushed using inert gases as the medium, with the inert gases being recycled for low loss.

7. Wide particle size range from 3 to 180 um, finished product particle size adjustable; full range of models, with production capacities from 5 to 3000 kg/h available.

8. Vacuum production, free from dust pollution, with excellent environmental conditions.

High level of automation, strong stability, and easy operation.

Application Fields

Widely used in industries such as chemicals, mining, abrasives, refractory materials, battery materials, metallurgy, construction materials, ceramics, food, pesticides, feed, new materials, and environmental protection, for ultra-fine crushing, breaking, and granule shaping of various dry powder materials.