Overview: The XFJ dry process airflow classifier is a new type of dry process classifier that has absorbed advanced classification technology and airflow centrifugal technology from both domestic and foreign sources, and is independently developed in combination with the requirements of domestic ultrafine material processes. This equipment overcomes the shortcomings of traditional processes such as unstable logistics and irregular particle movement. It has the advantages of large classification processing capacity, high fine powder extraction rate, low movement resistance during separation, and stable and reliable production process. The entire system adopts negative pressure airflow, without dust flying outward. Widely applicable for ultrafine classification of various non-metallic minerals, such as kaolin, calcium carbonate, coal ash powder, wollastonite, talc, graphite, quartz, barite, limestone, and raw materials for pharmaceuticals, pesticides, chemicals, etc.