MACROCONTAMINANTS Online analysis of macrostickies in a sorted office waste recycling plant making tissue

摘要

An online macrocontaminant analyzer, the FPAutoSpeck, was used for 8,000 measurements of deinked pulp to determine the number and area of heavy stickies, light macrocontaminants and dirt. The analyzer detected a wide range of macrocontaminant levels, during which the three types of macro-contaminants varied independently of each other. "Stickies storm" levels were detected and visualized by the analyzer, with heavy stickies levels exceeding 17,000/kg in the final pulp. Different particle size distribution patterns were noted for the light macrocontaminants when compared to those obtained for heavy stickies and dirt.