QF fluidized bed jet mill

The fluidized bed jet mill is a device for achieving ultrafine crushing of dry materials by high-speed gas flow. It consists of a pulverizing nozzle, a classifying rotor, a screw feeder, etc. The material enters the pulverizing chamber through a screw feeder. The high-pressure air is jetted to the pulverizing chamber at a high speed through a specially configured supersonic nozzle. The material is accelerated in the supersonic jet. The intersection is repeatedly impacted. Collision. Achieve pulverization. The pulverized material enters the classification chamber with the ascending airflow. Due to the high-speed rotation of the grading rotor, the particles are both subjected to the centrifugal force generated by the grading rotor and to the centripetal force generated by the viscous action of the airflow. When the particles are subjected to centrifugal force greater than centripetal force That is, the coarse particles above the grading diameter are returned to the pulverization chamber to continue the impact pulverization. The fine particles below the grading diameter are collected into the cyclone with the gas flow. The trap is collected. The gas is discharged by the induced draft fan.

Characteristics

Low energy consumption. Compared with other types of jet mills, energy saving is 30%-40%. Wear is small. Because the main pulverizing effect is collision of particles with each other. High-speed particles rarely collide with the wall surface. It can be applied to pulverize Mohs hardness of 9 or above materials. Wide range of crushing. Selectable in the range of d97=2-15um. The equipment is compact. The internal components are closed and crushed. The equipment is easy to repair. It is operated by imported frequency converter. The equipment is operated to achieve automatic control. For flammable and explosive materials, inert gas can be used. The working substance is crushed.

Scope of application

It is widely used in the pharmaceutical Chinese medicine, pesticide, chemical, metallurgy. Non-metallic minerals. Talc. Barite kaolin quartz graphite fire-retardant material. Advanced materials ultrafine grinding ceramic materials such as dry powder.

Main technical parameters of QYF fluidized bed jet mill

Parameter Model QF-148 QF-248 QF-348 QF-488 QF-588 QF-688

Production capacity (kg/h) 5-100 50-200 80-380 200-500 400-1000 600-1500

Air consumption (m3/min) 3 6 10 20 40 60

Feed particle size (mesh) 100-325 100-325 100-325 100-325 100-325 100-325

Crushing fineness (d97um) 2-15 2-15 2-15 2-15 2-15 2-15

Energy consumption (kw) 22 37 65 132 264 396

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