Increased productivity in the factories of phosphate, potash and other fertilizers, while reducing costs and improving product quality through effective classification by both the upper (4-5 mm) and the lower (1-2 mm) class.

Multifrequency screens dramatically reduce the contamination of the upper class by finished products, finished products contamination by undersize, as well as losses of finished products into undersize. Thus the circulation is reduced and the productivity is increased while improving the quality of the finished product.