Quartz sand is quartz particles made by crushing quartz stone, which is a non-metallic mineral, a hard, wear-resistant and chemically stable silicate mineral. Quartz sand is milky white in color or colorless translucent, with Mohs hardness of 7. As an important industrial mineral raw material, quartz sand is widely used in glass, ceramics and fireproof materials, and is also widely used in industries of metallurgy, construction, chemistry, plastics and rubber etc.
Classified by purpose, the general specifications of quartz sand include: 0.5-1mm, 1-2mm, 2-4mm, 4-8mm, 8-16mm, 16-32mm, 10-20μm, 20-40μm, 40-80μm, 100-120μm, 1000μm and 1200μm etc.
The fluidized bed ultra-fine jet mill has multiple, oppositely arranged nozzles. They create a high-speed airflow. This airflow accelerates the material to supersonic speed. At the nozzles’ intersection, the material collides. This achieves ultra-fine grinding. The crushed material enters the chamber of the classifier with the rising air flow. The classifying rotor spins fast. It creates a centrifugal force on the particles. The air flow’s viscosity creates a centripetal force on them. If the centrifugal force on the particles exceeds the centripetal force, the coarse, oversized particles return to the grinding chamber for more grinding. The qualified particles are collected in the cyclone separator and collector with the air flow. At the same time, the gas is discharged by the induced draft fan.
Features of the equipment:
Green and environmentally friendly: low-temperature and medium-free grinding ensures the high purity and physical properties of the product. The equipment operates under negative pressure without dust pollution.
High efficiency: the fully utilization of jet energy increases the crushing efficiency by 30% compared to that of the traditional jet mill, with classification accuracy higher .
Less equipment wear: The structure of fluidized bed with vertical classifier can processing ultra-fine powders with high purity and ultra-narrowness, avoiding the wear of the classifying part caused by structure of fluidized bed with horizontal classifier. It is especially suitable for ultra-fine grinding of materials with high-purity and high-hardness .
High output: when producing product with narrow particle size distribution, the yield is more than doubled compared to that of traditional mills.
Multi-purpose: one machine can be used for multiple purposes. It can be used either as a mill or a classifier. The crushing particle size range is wide, and the product particle sizes can be adjusted arbitrarily within the range of 0.2-200μm.
Intelligence: the equipment can achieve totally automatic control with simple operation, stable running and excellent production environment.
Reasonable design: the equipment has a compact structure, with no residue or blind spots in the chamber, making it easy to disassemble, clean and disinfect, and convenient to change grinding materials.
The whole system adopts automatic control, which makes one-button start and stop achievable. It is simple and convenient to operate and can be connected with the central control to realize remote control.