Flotationsanläggning och förfarande och anordningaFlotationsanläggning och förfarande och anordningar för avsvärtning av tryckfärger r för avsvärtning av tryckfärger

摘要

The invention relates to flotation apparatus and a method of deinking furnish free from ink and colour pigment particles, said apparatus comprising at least one flotation cell with a piping connected thereto for feeding a furnish flow into said cell to the end of separating the clean furnish from froth. An essential property of the invention is therein that the piping (2) is provided with a restriction (3) incorporating an air feed means (4) for efficient mixing of air bubbles in the furnish and that said cell (1) has a separation space (6) combined with a discharge space (7) for the discharge of the clean furnish flow and a means (8) for removing the froth in the fresh state from the separation space (6).