The suitable technology for each resource
Fibers from virgin pulp, recovered paper or paper machine broke are pulped with water to form a suspension in the “Pulping” process step. An optimal pulping technology can be selected, depending on the type of furnish, production output and the contaminant included in the furnish.
IntensaDrum is a pulping drum for efficient pulping. It performs in a consistency range of 15% to 20%, gently pulping the paper and separating the fibers from contaminants.
The IntensaMaXX pulper detrashing machine prevents any stringings and therefore allows for the maximum concentration of contaminants. Fiber loss is reduced to a minimum through a washing cycle.
IntensaPulper facilitates efficient pulping of fibers from virgin pulp, recovered paper or paper machine broke in stock preparation.
Removal of undesirable contaminants
Immediately before the stock suspension enters the headbox, pressure screens are installed both in the main flow and in the ModuleJet dilution stream if provided. Since these screens provide a last barrier before the paper machine to prevent damage by foreign bodies, the connection between screen and headbox must be directly linked and completely closed. Screening can also play a key role in paper machine broke treatment for removing trash accidentally introduced in the broke.
The flow-optimized machine housing results in constant flow and pressure conditions around the basket. Together with the use of the experienced Voith rotors and screening baskets, a high sticky reduction is achieved.
The homogeneous screen passing velocity reduces the formation of deposits or stringings in the sorter.
IntegraCombisorter is a continuously operated, highly efficient reject screen for separating plastics and light rejects. It provides high yield with minimum fiber loss. Thanks to the very high consistency in the reject discharge, no other thickening machine is required.
Improve optical cleanliness
The primary goal of flotation deinking is the selective removal of printing ink, stickies and wax from the stock suspension, thus improving the brightness and optical appearance of the product. Fillers and coating particles can also be removed efficiently with flotation. Most printing inks are hydrophobic, while most paper fibers are hydrophilic.
The InjectaCell flotation system removes contaminants from the stock suspension with minimal fiber loss. Due to the two-stage design, the flotation process is extremely efficient.
InjectaCell Compact achieves high savings in investment and maintenance in flotation through eliminating the secondary flotation cell.
InjectaPump guarantees stable operation, even with highly varying foaming behavior and changing amounts of foam. Since it combines foam destroyer, subsequent de-aeration and pump all in one machine, the investment cost is low.
Washing / Thickening / Dewatering
The purpose of washing is to remove undesirable particles smaller than 30 µm from the fiber suspension through a separation process according to the filtration principle. In contrast to thickening, which mainly removes water, washing separates solids from solids. At the same time, however, dissolved and colloidal contaminants are also removed with the filtrate.
InfiltraScrewpress is part of the Compact Dispersion System in stock preparation. The system provides reliable operation with only three machines.
InfiltraDiscfilter is the latest generation in dewatering without filter bags. Through a combination of proven technologies, the suspension can be dewatered reliably and almost maintenance-free.
Reduce unwanted contaminants and improve optical characteristics
Disperging is used in recovered fiber systems for reducing unwanted contaminants to a size not interfering with downstream processing.
InfibraDisp is part of the Compact Dispersion System in stock preparation. The system provides reliable operation with only three machines.
SpeedHeater is part of the Compact Dispersion System in stock preparation. The system provides reliable operation with only three machines.