Semi-chemical pulp is produced in a combination of mild chemical treatment and subsequent mechanical treatment in which the fibers are liberated from the wood matrix.
A major advantage of the Andritz green liquor technology, which is mainly applied for hardwoods and enhances the fiber quality substantially, is the efficient and easy recovery of cooking chemicals in the adjacent kraft mill. Thus, no additional process steps are needed for chemical recovery.
With this new line, the production capacity of APPM has doubled, while productions costs and waste water volume have been substantially reduced.
Andritz Pulp & Paper is a leading global supplier of equipment, systems, and services for the production and processing of all types of pulps, paper, tissue, and cardboard.