The LHB High-temperature and high-efficiency air classifier is a new air classifier independently developed by our company. It combines the original self-division grading technology and centrifugal grading technology. The grading medium makes full use of the high-temperature airflow in the production line (temperature can reach 100-300 °C). to achieve super-classifying. The main features are: full and reasonable use of high temperature airflow to ensure material dispersion, high classification efficiency, accurate cutting points, strict control of large particles, large processing capacity, low energy consumption and strong stability. It is suitable for on-line grading and impurity removal in various high-temperature production lines. It can also be used for ultrafine powder and nano-powder to remove entrained coarse particles.