International technology Group ANDRITZ has received an order from Melhoramentos Florestal to supply a high-consistency bleaching and wet lap system with a capacity of 125 admt/d to upgrade the existing thermo ground wood line at Fazenda Levantina Camanducaia, Minas Gerais, Brazil. Start-up is scheduled for the third quarter of 2019.
The line processes eucalyptus and pine as raw material to produce unbleached and bleached market thermos ground wood pulp for local board and tissue producers. The new PHC (peroxide high consistency) bleaching stage will replace the existing spray-bleaching system in the dewatering machine and achieve highest brightness levels at lowest consumption of chemicals. A universally applicable and reliable ANDRITZ Twin Wire Press will be installed to dewater pulp to a dryness of up to 33%, followed by a high-consistency mixer to guarantee gentle blending of pulp and chemicals. In order to achieve even retention time in the bleach tower, a new ANDRITZ discharge system will ensure continuous and uniform pulp discharge.
A complete wet lap system and finishing line are also part of the scope of supply. After dewatering to a consistency of 45% on another ANDRITZ Twin Wire Press, a wetlap cutter and layboy (CLB) will operate fully automatically to form wet bale stacks. The finishing line consists of various pallet conveyors.
With this upgrade, Melhoramentos Florestal will be able to increase pulp production and, in particular, bleaching efficiency by means of a safe process with low energy consumption that will allow greater flexibility in producing various pulp grades – an important feature with which to approach a wider range of end customers.
ANDRITZ PULP & PAPER
ANDRITZ Pulp & Paper is a leading global supplier of complete plants, systems, equipment, and comprehensive services for the production and processing of all types of pulp, paper, board, and tissue. The technologies cover processing of logs, annual fibers, and waste paper; production of chemical pulp, mechanical pulp, and recycled fibers; recovery and reuse of chemicals; preparation of paper machine furnish; production of paper, board, and tissue; sizing, calendering and coating of paper; as well as treatment of reject materials and sludge. The service offering includes system and machine modernization, rebuilds, spare and wear parts, on-site and workshop services, optimization of process performance, maintenance and automation solutions, as well as machine relocation and second-hand equipment. Biomass, steam and recovery boilers for power production, gasification and flue gas cleaning plants, systems and plants for the production of nonwovens, dissolving pulp, and panelboard (MDF), as well as recycling and shredding solutions for various waste materials also form a part of this business area.