Screening and fractionation
Highly efficient removal of undesirable contaminants
The purpose of fractionation is to separate the stock fibers into a long and a short fiber fraction. Depending on requirements, each fraction is then used directly for papermaking or undergoes further treatment.
Voith has a modularized screening portfolio of high-performance screens available for the diverse tasks within screening and fractionation.
The right machine for every task
Feature | Process | |
IntegraScreen | Modularized high-efficient screen |
All process stages within stock preparation |
MultiScreen | High-efficient screen for high volume flows |
Fine screening |
FiberSorter | Disc screen with deflaking effect |
Coarse screening |
IntegraCombisorter | High-efficient tail screen for high productions |
Coarse screening |
RejectSorter | High-efficient tail screen for small productions |
Coarse screening |
IntegraGuard |
High-quality protection for the approach flow |
Approach flow system |
Product range
IntegraScreen
Efficient screening in stock preparation
In fractionation and fine screening, the IntegraScreen combined with the MultiFoil rotor and C-bar screen basket shows highest sticky removal efficiency. As a result, higher runability of the paper machine as well as increased paper quality can be achieved. In addition, the high-quality screening equipment reduces maintenance costs.
The improved machine housing enables the discharge of the light reject via the standard reject pipe for most applications and simplifies the system integration. This saves investment cost for piping, valves, pump and instrumentation as well as energy costs. If required from process technology, an additional light reject discharge can be used.
The flow principle from the bottom to the top enables an integration of the reject recirculation into the machine, preferably at the final stage. Together with the additional reject dilution, simplified by the up-flow principle, the thickening of the reject will be reduced. Thus, clogging caused by too high thickening will be avoided. Furthermore, the lower reject consistency leads to a reduction of losses.
In the approach flow system, IntegraScreen is installed in second and third stages in front of the headbox in combination with MultiFoil rotors and C-bar screen baskets. Thick stock screening or broke screening will also be easily handled by the IntegraScreen combined with a C-bar HerculeX screen basket.
The BlueLine product range from Voith comprises modern machines and products for stock preparation that are characterized above all through the efficient use of energy and other raw materials and by gentle treatment of the fibers.
Discover the innovative BlueLineBlueLine Advantages
Higher Runability
Reduced Fiber Loss
Lower Maintenance Cost
Lower Energy Consumption
MultiScreen
Efficient screening for low consistency applications with highest throughput
Your benefits
- High separation efficiency
- Low energy consumption
- Rotor eliminates stringing to ensure high operational stability
FiberSorter
Operationally reliable screening for highest contaminant content
The FiberSorter is suitable for intake stock consistencies of 3% to 5%. It works in an absolutely operationally reliable fashion, even with the highest contaminant content, thanks to the use of defibering blocks when deflaking. This achieves an optimized ratio between machine volume and screening surface and a tangential intake. A continuous light rejects overflow, and screen holes with a diameter between 2.0 and 4.0 millimeters also contribute to a high degree of deflaking effectiveness of up to 80%. Rotor assembly is extremely easy thanks to the shrink-on disc.
Your benefits
- Reliable operation even at highest contaminant content
- Fiber recovery due to high deflaking potential
- Shrink-on disc for easy rotor assembly
IntegraCombisorter
Highly efficient tail screen for minimum fiber loss
The IntegraCombisorter is characterized by a high deflaking efficiency with proven separation of plastic and Styrofoam from fibers. It achieves a high reject consistency up to 30% so that no additional reject pre-dewatering is required.
Based on more than 20 years of experience with Combisorter CSM, IntegraCombisorter is exceptionally robust and ensures reliable operation. It is used in coarse screening and for intermediate screen in combi-screening. The IntegraCombisorter tail screen is available in two sizes with final stage production quantities up to 200 metric tons per 24 hours.
The BlueLine product range from Voith comprises modern machines and products for stock preparation that are characterized above all through the efficient use of energy and other raw materials and by gentle treatment of the fibers.
Discover the innovative BlueLineBlueLine Advantages
Reduced Fiber Loss
RejectSorter
Tail screen for small production
The RejectSorter is very similar to the IntegraCombisorter characterized by a high deflaking efficiency. With the adjustable guiding plates, the washing efficiency of the RejectSorter can be adjusted and the fiber loss reduced.
The RejectSorter is applied in coarse screening when small production is required.
Your benefits
- High screening efficiency
- Suitable for high inlet consistencies and high concentrations of contaminants
- High reject dry content
IntegraGuard
High-quality protection for the approach flow
Pulsation of screening systems in the approach flow has to be avoided to ensure a consistent and homogeneous suspension at the headbox. The new head piece design of IntegraGuard allows a straight feed to the screen basket. This reduces the pressure drop and increases the differential speed between fluid and rotor. Due to the adapted head piece, only a low rotor speed is required, which significantly decreases the pulsations in the outlet.
Environment. Quality. Reliability.
The BlueLine product range from Voith comprises modern machines and products for stock preparation that are characterized above all through the efficient use of energy and other raw materials and by gentle treatment of the fibers.
Discover the innovative BlueLineBlueLine Advantages
Higher Runability
Lower Maintenance Cost
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Engineered for success
Servolution. Service at the next level
At Voith, the success of the customer takes center stage. Service means delivering customized service solutions and utilizing our full expertise to help our customers reach their goals.
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