China Two-Stage Pusher Centrifuge Salt Producing Machine

Two-stage Pusher Centrifuge is a kind of perforated basket centrifuge, which works both continuously and effectively. The mixture to be separated is fed through the feed pipe to the distributor continuously and evenly distributed to the wall of first stage basket. Most of the mother-liquor which is filtered by centrifugal force from the feed departs through the sieves into the liquor-collecting casing where it will be discharged out of the machine. The first stage basket rotates and reciprocates The formed filter cake is pushed into the second stage basket as the first stage basket is rotating and reciprocating .The cake can stay in the centrifuge for a sufficient time and therefore the required Moisture content of the cake can be achieved under the powerful centrifugal force. Afterwards, the cake is continuously discharged out of the basket. The effective washing can be carried out in the centrifuge in case of requirement of high purity of the solid product. The washing liquid and the mother-liquor can be discharged separately if necessary.

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

Process
pusher centrifuge utilize continuous filtration for the separation of suspended, fast draining, crystalline, granular or fibrous solids from the liquid phase.
the solids can be washed as they are transported through the basket.
Application
pusher centrifuges are used in all fields for the separation of slurries with solids which filter easily.

Typical products
chemicals : glaubers salt,salt, boric acid, ascorbic acid, adipic acid, sodium chloride, iron sulphate, sodium sulphate, copper sulphate, sodium bichromate.
fertilisers : ammonium sulphate, potash, urea, calcium nitrate, potassium sulphate.
food stuff animal feeds : extraction residues, meat pulp.
benefication : rock phosphate, gypsum, ores, coal.

Mode of operation
feeding :
slurries are fed via a feed pipe - non flowable products are conveyed via a screw - into the feed distributor which rotates at basket speed. Here the feed is accelerated and evenly distributed over the screen.
filtration and transport :
the majority of the liquid is drained at the feed zone of the slot screen and is discharged into the filtrate housing, while the solids form a cake which is moved axially into the solids discharged housing by the oscillating pusher plate. During this axial movement, the solids are dewatered to low final moisture. While in single stage basket speed moves the cake over the screen, a combination of an oscillating inner basket and a stationary pusher plate is used for the cake movement in two stage baskets.
filtrate removal :
as a result of ventilation from the rotating baskets the filtrate usually is mixed with air. For this reason we recommended venting at the filtrate outlet flange.
the filtrate housing can be subdivided by partitions for the separation of main filtrate and wash filtrate. An efficient separation can be expected, even for counter-current wash systems, specifically with single stage units.
the filtrate outlet can be directed downwards, or to the right or left of the centerline, with the appropriate change in the direction of basket rotation.

cake washing :
the solids layer on the screen can be washed with nozzles or wash basket.
discharge of solids :
the cake is discharged from the basket into the solids collecting housing or into a volute race at peripheral speed. Thus a volute race discharge can be used to conveying the solids directly to the dryer.
Design concepts
complete separation of mechanical unit from the process area.
long and short baskets.

Zhejiang-EscherWyss Two-stage Pusher Centrifuge is China's only product manufactured

under the licence and whole technology from Swiss Sulzer Escher Wyss

Model

P40

P500

P60

P85

P100

Basket diameter

(inner diam in last stage basket)

360

500

630

800

1000

[mm]

Number of stages

1 - 2

1 - 2

1 - 2

1 - 2

1 - 3

Max. rotation speed

3000

2000

1900

1500

1300

[r/min]

Max. number of strokes

80

80

108

108

80

[min-1]

Hydraulic oil pressure

(loading&operating)

2.5

2

8

8

8

[MPa]

El. power rotation / stroke

(*required with NaCl)

15/7.5

30/15

45/22

75/45

113/53

[kw]

Operating weight

(with oil filling, w/o counterweight)

2600

4400

4860

8000

12000

[kg]

*Maximum throughput in NaCl

(dependent on feed conditions)

3

12

35

55

70

[t/h]

Dimensions

L

2346

3600

3200

3800

4350

[mm]

W

1090

1420

1700

2000

2300

[mm]

H1 without vibration isolation

1006

2078

1300

1550

1900

[mm]

H2 vibration isolation with concrete counterweight

1750

2200

2000

2200

2550

[mm]

H2 vibration isolation with steel counterweight

1300

1400

1550

1850

2200

[mm]

H2 vibration isolation without counterweight
(with damping elements)

1280

1350

1450

1700

1890

[mm]

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https://youtu.be/H7sn2uM4Fj8

https://youtu.be/z-YoywwIuHQ

https://youtu.be/faEGtxq3OHU

https://www.youtube.com/watch?v=QSNVE5znMOc&feature=youtu.be

https://youtu.be/MRDMqbtV0Bo

https://youtu.be/tuiSXAQutX8

https://youtu.be/ax_OFLYFnKg