Ultra-fine annular roller mill

Operating Principle

Compressed air, after being chilled, filtered, and dried, is directed through nozzles to form supersonic airflow into the crushing chamber, causing the material to become fluidized. The accelerated material converges at the intersection of several nozzle jets, resulting in intense collisions, friction, and shearing to achieve ultra-fine particle crushing. The crushed material is then transported by an ascending air stream to the impeller classification area. Under the action of the centrifugal force of the classification wheel and the suction force of the fan, 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 stream 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-fluidizing classification technology, it significantly outperforms domestic and international fluidized bed air classifiers.

1. Low energy consumption, up to 30% more energy-efficient than traditional fluidized bed air jet 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 has a compact structure and occupies a small area.

4. The粉碎box is free of leftover material and has no dead corners, making it easy to dismantle, clean, and disinfect. It is convenient to switch between different varieties and meets GMP requirements.

5. Low-temperature media-free crushing, especially suitable for the crushing of materials with low melting points, heat-sensitive, sugary, and volatile substances.

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

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

8. Vacuum production, free of 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, building materials, ceramics, food, pesticides, feed, new materials, and environmental protection, for ultra-fine pulverization, disintegration, and granule shaping of various dry powder materials.