The turbine grader, as a forced centrifugal grader with secondary rotator is composed of grading rotator, guide vane rectifier, and screw feeder. The materials are fed through the upper cartridge, and the grains will be sieved and well distributed by the incoming air, which brings the grain to the grading zone. The centrifugal force produced by the fast rotation of grading rotator together it the centripetal force by the pneumatic adhesion act on the grading grains. When the centrifugal force on the grain is greater than the centripetal force, the coarser grains above the grading range will be swirled down along the container wall. The secondary air will be rectified to uniform cyclone through the guide vane, and separate the thinner grains from the coarser ones. The separated coarser grains will be blown out from the discharge port. The thinner gains below the collector, whereas the purified air will be vented outside from the draft.

Features
1, Compatible with a variety of dry-type powder mill machinery (jet mill, ball mill, Raymond mill) go form a closed circuit.
2, Wide Grading Range : d 97 =4~15um; only adjust the rotator speed to classify grains of varied diameters and perform steeples grading. The imported converter will auto matically control the whole grading process.
3, High Grading Efficiency: Before discharge the impact of cyclone on the materials separates the coarser grains from the thinner ones, thus raising the grading efficiency and precision. Yielding 97% superfine products of less than 5 um.
4, The horizontal grading rotator, made of abrasion resistant materials, is featured by stable operation and sustainable service life.
5, The grading capacity is within the range of 50 and 6000 kilograms, reducing energy loss about 40% less than the equivalent products available.
Application Scope
It is widely applied to thinner grading for such nonmetallic ores as calcium carbonate (calcite), kaolin stone, French chalk, graphite, barite, limestone, smelt and grading for grading for pesticide and other chemical materials.