HAZARDOUS HEAVY METAL REMOVING METHOD FOR OLD CORRUGATED CONTAINER WITHOUT YIELD LOSS

摘要

PURPOSE: A method for removing harmful heavy metal is provided to selectively remove heavy metal and foreign materials and to prevent reduction of the recycled materials. CONSTITUTION: A method for removing harmful heavy metal from corrugated cardboard comprises: a step of isolating foreign materials from a fiber; a step of concentrating and removing the foreign materials; a step of detaching ink from waste paper by a mechanical process; and a step of removing micro particles. The mechanical process is performed by a kneader at low speed.