fluidized bed jet mill

fluidized bed jet mill with integrated classifier and PLC

Fluidized bed jet mill is a kind of dry pulverizing equipment that uses high-speed air flow energy to collide, shear, friction and achieve micron or even submicron level pulverization of materials at high speed.

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Description

Fluidized Bed Jet Mill Overview

Fluidized bed jet mill does not rely on the traditional mechanical impact, but with the high-speed jet in the crushing chamber to form a turbulent field, so that the particles hit each other to complete the crushing, so it is suitable for high purity, heat-sensitive materials precision processing.
Fluidized bed jet mill combines the fluidized bed air crushing technology and built-in self-splitting grading technology to achieve simultaneous crushing and grading, the finished product size distribution is more concentrated, higher efficiency. The whole machine adopts negative pressure closed loop system, environmental protection and safety, for flammable and explosive materials can also be configured with inert gas closed loop system.

Fluidized Bed Jet Mill Features

  • Non-contact crushing: rely on the collision between the material crushed, almost no mechanical wear and equipment life longer.
  • Low-temperature operation: no significant temperature rise, suitable for heat-sensitive, low melting point materials.
  • Adjustable particle size, distribution of concentrated: particle size range between 2 ~ 150 microns, particle size distribution is controllable.
  • High purity: no media pollution, no introduction of impurities, suitable for high-purity materials.
  • Compact structure, integrated operation: crushing and grading synchronization is completed, the system structure is simple, occupies a small area.
  • Intelligent control: PLC control system, fully automatic operation and data recording.
  • Green environmental protection: closed negative pressure system operation, no dust leakage, in line with environmental requirements.
  • Adaptable: can use nitrogen, carbon dioxide and other inert gases for closed-circuit recycling, to ensure the safe handling of combustible materials.

Advantages of Fluidized Bed Jet Mill

  • High efficiency and energy saving: low energy consumption ratio is realized through precise airflow control.
  • Self-grading function: particles are automatically screened by the built-in grading system, effectively avoiding over-crushing.
  • Low maintenance cost: non-contact crushing principle makes the wear and tear is small, reduce the maintenance frequency.
  • High scope of application: can handle a variety of physical properties of different powder materials.
  • The process can be traced: automated record of the operating parameters, convenient for quality control and process optimization.

Working Principle of Fluidized Bed Air Flow Mill

When the equipment works, the material enters the crushing chamber through the spiral feeding system, and high-speed compressed air or inert gas is sprayed out from several specially designed nozzles to form a supersonic jet, so that the material forms a fluidized state in the crushing chamber. Particles in the high-speed airflow in a strong collision, self-abrasion, quickly broken into fine powder.

The crushed particles rise with the airflow and enter the grading area. The rotating grading impeller dynamically separates the particles according to the difference between particle size and gravity: coarse particles are thrown back to the crushing area to continue crushing, and qualified micro-powder enters the collection system through the grading wheel. The exhaust gas is purified by the dust removal system and then discharged or recycled.

Typical Application Areas of Fluidized Bed Jet Mill

  • Pharmaceutical industry: hormones, antibiotics raw materials, inhaled drugs, Chinese medicine extracts, natural ingredients micronized.
  • New energy materials: lithium battery positive and negative materials, such as lithium iron phosphate, graphite. Nano-silicon dioxide, carbon materials.
  • Chemical fine products: catalysts, additives, pigments, dyes, industrial ceramic powder, heat-sensitive polymer compounds.
  • Food and nutritional health care products: food additives, such as natural pigments. Nutraceutical powder, enzyme preparation, plant protein.
  • New material field: high purity quartz powder, rare earth oxides, ultrafine ceramic powder, magnetic materials, optical powder.