Pusher Centrifuge/Salt Refining Centrifuge

→Zhejiang-EscherWyss Two-stage Pusher Centrifuge is China's only product manufactured under the licence and whole technology from Swiss Sulzer Escher Wyss

Working Principle and Operation Details:
1. The pusher centrifuge works continuously by filtration.
2. The solid/liquid mixture to be separated is fed continuously through the fixed feed pipe into the rotating feed distributor to be spread evenly on the sieves of the first stage basket. The major part of the liquid passes through the sieves in the feed zone and the solids cake is formed. Besides rotating,the first basket reciprocates axially, driven hydraulically by a piston.
3. In this way, the solids cake, in rising sections, according to the stroke length is pushed across the first stage basket, onto the second stage, finally leaving the centrifuge through a static collection channel and solids discharge casing.Once the centrifuge attains its full speed rotation, slurry is fed continuously at a constant rate (with uniform solid content) inside the inner bowl. Uniformly distributed slurry is centrifuged due to rotation of the screen and mother liquor is collected in the liquor compartment. Solid crystals are retained on the rotating screen surface experiencing further dewatering due to
centrifugal force. The formed cake is pushed towards the discharged compartment continuously through reciprocating pusher plate situated at the rear end of rotating bowl.The cake is replaced by a new cake as the feed is continuous
In case of two stage machine, the cake discharged from the inner basket is transported to the next stage basket. In the process, breaking and rebuilding of the cake also helps in further dewatering of cake. Higher purity can be achieved by applying wash at optimum positions

Series P Two-stage Pusher Centrifuge has high adaptability to filterable crystalline and fibrous products (bigger than 50um), and can successfully separate over 200 kinds of different products, f.or example, sodium chloride, sodium sulfate, sodium bichromate, ammonium sulfate, ammonium nitrate, boric acid, acetate, nitro cellulose, urea, PVC, potassium chloride, potassium nitrate, potassium sulfate, potassium carbonate and phosphate. The centrifuges are widely used in such industries as light industry, chemical industry, metallurgical industry and environmental protection.