Grinding & Milling, Jet Mills

Spiral Jet Mills

A jet mill grinds materials by using a high speed jet of compressed air or inert gas to impact particles into each other. Jet mills can be designed to output particles below a certain size, while continue milling particles above that size, resulting in a narrow size distribution of the resulting product. Particles leaving the mill can be separated from the gas stream by cyclonic separation.

Jet Mill Working Principle

MQP disc jet mill, also known as spiral jet mill, the basic principle is: use the negative pressure generated by compressed air to suck the material in the hopper into the flat grinding chamber; The high-speed airflow (sonic speed or even supersonic speed) collides and crushes each other, and the materials that reach a certain particle size will approach the center of the grinding chamber due to the reduction of centripetal force, and will be discharged from the grinding chamber with the flow of airflow, and then enter the cyclone and dust collector.

Features of Spiral Jet Mill

No medium grinding, the grinding chamber can be protected by stainless steel and wear-resistant ceramics to ensure product purity.
Low temperature grinding, especially suitable for grinding heat-sensitive, low-melting, sugar-containing and volatile materials.
The grinding process is extremely short, the crushing efficiency is high, and the over-grinding is less.
Suitable for grinding, dispersing and depolymerizing, and particle shaping of materials with various hardness.
The whole system is closed, without dust, low noise and easy to operate.