Components for the sugar industry
Screens for sugar pulp presses, centrifuge screens and distribution beds for fluid bed dryers
ANDRITZ has a broad portfolio of components for the sugar industry. As a manufacturer with all technological possibilities, ANDRITZ delivers the following components:
Drilled screens for sugar pulp presses
Drilled screens for the sugar industry offer the best dewatering — allowing you to reduce energy costs and maintenance requirements.
A maximum number of holes and the correct hole geometry minimize the risk of clogging and delivering the best dewatering results with the lowest energy consumption for drying.
In addition to the number of holes, another important aspect of dewatering is the correct gap between the screw and the screens in the press.
Drilled screens have a long life and are very stable, minimizing deformation. This is due to the structural design and the proper selection of wear-resistant stainless steel alloys to perfectly match your process requirements.
Punched screens for sugar pulp presses
Pulp press screens have hole diameters down to 1 mm with a maximum punched plate thickness of 1 mm. The thinness of these plates is compensated for by adding supports to the frame. However, these frames also reduce the open area of the screen, reducing the dewatering efficiency when compared to a drilled screen.
The following punched screens are available for common types of sugar pulp presses:
- Thin screens with small hole diameters
- Supporting screens in thick material with large punched holes
- Deaeration screens with large open area and different hole shapes, e.g. flapped holes
ConiPerf distribution beds for fluid bed dryers
Distribution beds made of ConiPerf plates are the first choice in any fluid bed application (e.g. sugar dryers or coolers).
- ConiPerf ensures that sugar is directed in a defined path and will not fall through the holes
- Different plates or segments with defined flow directions can be arranged within one distribution bed
- ConiPerf plates are supplied to match the pressure drop required by the process
- Smooth operation and less damage to the sugar crystals
Screens for extraction towers type DDS
Screens for extraction towers type DDS are either produced in punched, drilled, or slot-milled segments. The most common are milled segments with slots of 1,2 x 190 mm in 4 - 5 mm thickness or drilled segments with conically drilled holes with 2:3 mm diameter in plates of 2,5 - 3 mm thickness.
Screens for crystallization centrifuges
MicroPerf screens made of chrome-plated stainless steel with slots 0,06 or 0,09 mm wide are a slightly more expensive, but significantly more efficient alternative to galvanized chrome-nickel screens used in crystallization centrifuges.
MicroPerf screens feature additional benefits:
- Free open area of up to 9 %
- Longer lifetime: 400-800 %
- Improved molasses yield / improved sugar yield
Continuous centrifuge screens
Polished wedge wire screens with continuous horizontal slots ensure rapid separation of the sugar crystals from the molasses and allow a smooth flow of crystals across the surface of the screen without the secondary damaged traditionally caused by short, vertical slots. Using a polished, continuous wedge wire with horizontal slots ensures that the crystals do not break up.
- Higher sugar retention
- Rapid separation of the sugar crystals from the molasses
- Wear resistant
- Higher profitability
- Low maintenance costs