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Centerdisc® CDI Disc Filter

The Centerdisc® CDI filter's ability to handle high freeness and high consistency stock makes it insensitive to process variations, and allows the surrounding process equipment to be smaller.

The unique open rotor design, with segments mounted on cross channels that span axial arms, allows the Centerdisc® CDI to handle high freeness stock without crashing the discs. Thick, high freeness pulp mats fall directly into a discharge trough that is suspended in the center of the rotor. The agitating effect of the rotor arms makes the Centerdisc CDI ideal for high freeness pulp as the mixture will not settle. In addition, the Centerdisc CDI efficiently produces consistent pulp quality with wide variations in feed tonnage. Other benefits derived from the open rotor design are high hydraulic capacity, minimum space requirements, low maintenance costs and operational reliability.


Ability to Handle Large Flows

The unique rotor design enables the Centerdisc CDI disc filter to handle extremely high flows in applications where only drum deckers have traditionally been used.


Easy Cleaning of Segments

The open grid segment design, with over 90% open area, eliminates the risk of pulp and debris accumulating inside the sector. This open grid allows the fabric to be cleaned from both sides so the filter media stays clean and effective over longer periods of time. 

Centerdisc® CDI 5.5

No of disc

10

16

22

26

29

Pitch

250/325

250/325

250/325

250

250

A mm

7217/7891

8217/9881

10217/11831

11257

12007

Area m2

272

544

748

884

986

Op. weight ton

85/112

118/160

151/202

173

190


Centerdisc® CDI 5

No of disc

10

16

22

26

Pitch

250/325

250/325

250/325

250

A mm

7217/7891

8717/9881

10217/11831

11257

Area m2

290

464

638

754

Op. weight ton

81/112

112/151

143/189

164


Centerdisc® CDI 4

No of disc

8

12

18

21

Pitch

250/325

250/325

250/325

250

A mm

4710/5410

6210/7035

7710/8985

8460

Area m2

118

236

355

414

Op. weight ton

40/52

53/69

67/87

74

 

Size

B mm

C mm

D mm

CDI 4

5410

2450

2300

CDI 5

7100

3000

2884

CDI 5.5

7400

3200

3035

 
Material

• All wetted parts are made of high grade stainless steel

Polypropylene filter cloth and zipper are standard; Kynar and Stainless Steel as an option


Available Auxiliary Equipment

• Foundation

• Platform

• Instrumentation

  • Ability to handle high freeness applications

  • Ability to handle high feed consistencies

  • Ability to handle large flows

  • User-friendly operation

  • Open grid segment

 

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