Products > Air Classifier
The heart of a modern cement plant.
N.N.Zoubov Engineers SMCE centrifugal air classifiers are sizing machines that separate the fine and coarse particles comprising a dry, pulverised feed mixture.
They can be used in open circuit to obtain a specific particle size distribution of a product or even several products simultaneously: in that case, several air separators are used in tandem.
An important application is the dedusting of aggregates or concrete sand products to meet the desired specifications.
However, the air classifier really proves its worth in closed circuit grinding, where it becomes an integral part of the grinding system and governs the fineness and quality of the finished product. In closed-circuit, the entire mill output is fed to the air separator. The air classifier sorts out the fines which have attained the required fineness and the coarse product, or tailings, is returned to the grinding mill (together with new feed) for further reduction.
The procedure permits the mill to operate at its maximum efficiency and leaves to the separator, sizing of the required fines. The particle size distribution of the finished product is considerably improved by recirculation of particles in the mill, a reduction in loss of grinding media and wear on mill liners of up to 50 % has been noticed, as well as a decrease in the temperature in the mill.
In fact, a modern cement grinding unit, producing several types of cement, as well as fine specialty grades, is not conceivable without an air separator to regulate the quality of the finished product, as well as for the specific power consumption saving achieved.
The N.N.Zoubov Engineers SMCE Company has particular experience in these installations and over 3102 units in operation have proven the advantages of this concept.
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