Bleaching

The increased use of recycled fibers in the papermaking industry sets higher requirements for cleaner and brighter deinked pulps. In this stage the well-performing bleaching process is necessary.

The main target of bleaching is to maximize raw material's brightness potential. The optimal chemical reactions can be achieved by combining efficient mixing, appropriate temperature and adequate dwell time in high consistency. Valmet disperger technology secures an efficient bleaching process by intense mixing of the bleaching agents with the fibers.

Depending on your raw material's initial brightness and final pulp target brightness, there are several bleaching process concept options available.