Ultra-fine grinding of high-purity and high-hardness quartz sand

In Industry News12/01/20224 Minutes

Quartz sand is produced by crushing quartz stone. Quartz is a non-metallic mineral, a hard, wear-resistant and chemically stable silicate mineral. The color of quartz sand is milky white, or colorless and translucent, with a Mohs hardness of 7. Quartz sand is an important industrial mineral raw material, widely used in glass, casting, ceramics and fireproof materials, smelting ferrosilicon, metallurgical flux, metallurgy, construction, chemical industry, plastics, rubber, abrasives, filter materials and other industries.

Quartz sand is a hard, wear-resistant and chemically stable silicate mineral. According to its use, the commonly used specifications are: 0.5-1mm, 1-2mm, 2-4mm, 4-8mm, 8-16mm, 16-32mm , 10-20 mesh, 20-40 mesh, 40-80 mesh, 100-120 mesh, 1000 mesh, 1200 mesh…

The fluidized bed ultra-fine grinding machine uses a plurality of oppositely arranged nozzles to form a high-speed airflow, and then uses the high-speed airflow to accelerate the material to supersonic speed to make it collide with each other at the intersection of the nozzles to achieve the purpose of ultra-fine grinding. The material to be ground enters the classification chamber of the classifier with the upward airflow. Due to the high-speed rotation of the classification rotor, the particles are subjected to both the centrifugal force generated by the classification rotor and the centripetal force generated by the viscosity of the airflow. When the centrifugal force on the particles is greater than the centripetal force, that is, the coarse particles above the classified particle size return to the grinding chamber to continue impact grinding, and the fine particles flow into the cyclone separator and collector for collection, and the gas is discharged by the induced draft fan.

Features:

Green environmental protection: low temperature without media grinding ensures high purity and physical properties of the product. The equipment operates under negative pressure without dust pollution.

High Efficiency: The full utilization of the jet flow energy can improve the grinding efficiency by 30% compared with the traditional jet mill, and the classification accuracy is higher.

Low equipment wear: The structure of “fluidized bed + vertical classifier” can process ultrafine powder with high purity and ultra-narrowness, avoiding the wear of the classification part of “fluidized bed + horizontal classifier”, especially suitable for high purity , Ultra-fine grinding of high hardness materials.

High output: When producing products with narrow particle size distribution, the yield is more than double that of traditional grinders.

Multi-purpose: One machine is multi-purpose, which can be used as a grinder or a classifier. The grinding particle size range is wide, and the product particle size can be adjusted arbitrarily in the range of 0.2-200μm.

Intelligent: The equipment can realize all automatic control, simple operation, stable operation and excellent production environment.

Reasonable design: The structure of the equipment is compact, there is no material stored in the grinding machine, no dead angle, easy to disassemble, wash and disinfect, and it is convenient to replace the variety of grinding materials.

The whole system adopts automatic control, which can realize one-button start and stop, and the operation is simple and convenient, and the connection with the central control can realize remote control.