The classifier that work together with ore grinding machine needs to equip with sand transportation and setting mechanism, so such machine are called mechanical classifier. Actually, the grading process is realized on the basis of different setting velocity of sands.
Mechanical classifier not only uses as the main auxiliary equipment for classification and grading inspection, sometimes it also uses for ore washing of clay minerals and desliming and dehydration of ore pulp.
According to the different type of sand transportation and setting mechanism, mechanical classifier is divided into spiral classifier, rake classifier, and bowl classifier etc. The spiral classifier has simple structure with easy operation, the chute has large tilted angle, which is easy for the flow connection. So this type of classifier is wildly applied.