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Decanter Centrifuges

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Decanter Centrifuges
Principles of operation

Solid Bowl and Screen Bowl Decanter Centrifuges. 

The two primary types of decanter centrifuge are : Solid bowl decanters and Screen bowl decanters.
For details and a video on how decanter centrifuges work please see our principle of operations page.

Used to process PVC slurry.Solid bowl decanter centrifuge.Manufactured in titanium. Casing top removed.600mm diameter decanter centrifuge.

  

 

 

 

 

The main features of the decanter centrifuge are:

  • User friendly advanced control technology
  • Screen and Solid bowl configurations
  • Bowls range from 150mm – 1400mm Diameter
  • Sealed and pressure-tight construction
  • Two and three phase versions
  • Compliant with CE regulations
  • Compliant with environmental noise regulations
  • Low operating costs, low maintenance costs
  • Low cake moisture – high solids removal – high centrate clarity
  • For slurries 1-70% solids: particles 1 micron to > 1cm
  • Solids output from 0.1 – 100T/hr dry solids
  • Centrate output from 40 litres per minute to 5,000 litres per minute
  • Compact – small ‘footprint’
  • Materials of construction to suit the rigours of the application
  • State of the art abrasion resistant materials


For more information please see our BROCHURES and TECHNICAL INFORMATION sections.


Solid Bowl Decanter Centrifuges.

The commonest form of decanter is the bolid bowl decanter. It is used in to dewater slurries in many process applications including :

  • Minerals.
  • Effluent treatment.
  • PTA, PVC, Polyolefins,
  • MMA, ABS
  • HDPE, Styrene.
  • FGD - Gypsum dewatering.

A large range of sizes, capacities and meterials of construction are available. See the size range table below for more information. Fume tight and pressure decanters are avaialbe for specialist and hazardous application.


Image750mm diameter pressure tight solid bowl decanter.

 

Screen Bowl Decanter Centrifuges. 

The screen bowl decanter centrifuge is operationally similar to the solid bowl units, but is designed to provide additional washing efficiency and enhanced moisture removal in applications where crystalline materials are involved. The screen bowl decanter operates in two stages, combining the clarification and sedimentation advantages of the solid bowl centrifuge and the de-watering benefits of an additional screen section. These centrifuges are typically used on BPA, some Minerals and Polyolefins.

ImageDecanter bowl with screen section.

 

 

 

 

 

The benefits of a screen bowl decanter include:

  • Performance is less affected by variations in feed consistency.
  • Ability to wash cake and collect wash liquors. 
  • Mothor liquor and was liquor can be collected separately.
  • Final drainage of the cake through the screen ensures low moistures.
  • Fine screen slots limits losses through the screen.


Decanter size range : Solid bowl and Screen bowl models.

Model :
150
225
450
550
600
750
900
1000
1200
1400
Diameter M
150
225
450
550
600
750
900
1,000
1,200
1,400
Length min M
300
700
700
1375
950
1875
1800
1500
2100
1800
Length max M
500
900
1,100
1,375
2,100
2,500
3,000
1,500
3,600
3,600
Typical Wt T
1.0
1.7
2.5
3
4.8
8
14
12
25
30
Motor min KW
5
11
15
30
30
55
60
75
110
110
Motor max KW
11
18
30
60
75
135
150
200
500
500
Types:
 
 
 
 
 
 
 
 
 
 
Solid bowl
ü
ü
ü
ü
ü
ü
ü
ü
ü
ü
Screen bowl
 
 
ü
ü
ü
ü
ü
 
ü
ü
Fume tight
ü
ü
 
ü
ü
ü
ü
ü
ü
ü
Pressure
 
 
 
 
ü
ü
ü
ü
ü
ü
Three phase
 
 
 
 
ü
ü
ü
 
 
 

Typical decanter bowl profiles.

Image

 

For more information please see our BROCHURES and TECHNICAL INFORMATION sections.

If you are considering laboratory or pilot testing to assess the performance that can be achieved with a decanter centrifuge please goto our Process Laboratory section for assistance and additional contact details.



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