Pulp & paper

Vaisala K PATENTS® SAFE-DRIVE Process Refractometers and Digital Divert Control Systems provide black liquor and green liquor dry solids content and density measurements and recovery boiler safety in the kraft chemical (sulfate) and chemi-mechanical pulp production processes. The dissolved solids content (TDS) measurements of fiber suspensions allow to optimize the brown stock washing process in fiber line. Refractometers also ensure the right concentration of sizing liquids in the preparation and use in paper making.