In the building materials industry, using vitrified microbeads as lightweight aggregate can improve the workability, fluidity and self-strength of mortar, lower material shrinkage rate, enhance the overall performance of finished products and cut comprehensive production costs. Different industrial applications require drastically different particle sizes of the material, so vitrified microbeads are classified into Grade 1, Grade 2, Grade 3 and other grades based on particle size. A complete vitrified microbead production line consists of crushers, screening machines, conveyors and other major equipment. After vitrified microbeads are crushed to below 10 mm, fine screening equipment is required for grading. Common mesh sizes for grading vitrified microbeads include 20 mesh, 50 mesh, 70 mesh, 90 mesh, 120 mesh and 180 mesh. The grading accuracy must be controlled within ±10%, which sets high standards for the precision of vibrating screening equipment.