International technology Group ANDRITZ has received an order from Mayr-Melnhof Karton to supply a Vertical Screw Thickener (VST) dewatering system for the RMP (Refiner Mechanical Pulp) process at the mill in Frohnleiten, Austria.
Start-up is scheduled for the fourth quarter of 2020.
ANDRITZ will install its latest dewatering technology – the Vertical Screw Thickener (VST), an innovative screw press with a vertical design. The pulp is fed in from the top and then compressed and dewatered as it moves downwards. The self-filling and gravity-assisted dewatering principle allows higher throughput and pulp dryness because the available screen area is fully used.
The new ANDRITZ system also comprises a dilution conveyor, MC pump including standpipe and a TurboMix agitator. Automation, instrumentation, engineering, mechanical installation, commissioning and start-up supervision are also part of the scope of supply.
At the Frohnleiten Mill, the RMP with Freeness of 350 ml is dewatered from an inlet consistency of 3.5% to 25% consistency at the discharge in one innovative unit. The pulp is then stored at a consistency of 10% in a new pulp storage tower that feeds the existing board machines.
The existing RMP system was supplied by ANDRITZ in 1996 and processes a mixture of wood chips containing spruce, larch and fir as raw material for the mill’s own board machines producing CRB (Coated Recycled Board).
Mayr-Melnhof Karton is the world’s leading producer of coated recycled cartonboard.
International technology group ANDRITZ offers a broad portfolio of innovative plants, equipment, systems and services for the pulp and paper industry, the hydropower sector, the metals processing and forming industry, pumps, solid/liquid separation in the municipal and industrial sectors, as well as animal feed and biomass pelleting. The global product and service portfolio is rounded off with plants for power generation, recycling, the production of nonwovens and panelboard, as well as automation and digital solutions offered under the brand name of Metris. The publicly listed group today has around 29,500 employees and more than 280 locations in over 40 countries.
ANDRITZ PULP & PAPER
ANDRITZ Pulp & Paper provides equipment, systems, complete plants and services for the production of all types of pulp, paper, board and tissue. The technologies and services focus on maximum utilization of raw materials, increased production efficiency and sustainability as well as lower overall operating costs. Boilers for power production, flue gas cleaning plants, plants for the production of nonwovens and panelboard (MDF), as well as recycling and shredding solutions for various waste materials also form a part of this business area.