ESCHER WYSS PUSHER CENTRIFUGES IN THE PHOSPHATE INDUSTRY.

This article attempts to provide a general picture of phosphate reserves, production figures, exploitation of crude phosphate, treatment processes, the purpose of the pusher centrifuge in the treatment process, and special problems related to phosphate ore treatment. They are used to process also aluminum sulphate, potassium chloride, salt, foundry sand, and many other minerals.