The application of mineral processing techniques for the printed paper recycling

Abstract

IZVOD U radu je opisan proces reciklaže otpadnog papira. Poseban akcenat je stavljen na opis tehnoloških faza (dezintegracija ili mlevenje, prosejavanje, prečišćavanje, pranje i/ili flotacija, tretman voda i odlaganje mulja), koje su generalno neophodne u procesu prerade otpadnog papira, a koje takođe predstavljaju i osnovne faze procesa pripreme mineralnih sirovina. S obzirom da papir kao potencijalna sekundarna sirovina zbog degradacije fizičkih karakteristika celuloze koje nastaju tokom procesa prerade, može se reciklirati ograničen broj puta, u radu je data i analiza uticaja mehaničkog i hemijskog tretmana na poboljšanje kvaliteta vlakana sekundarne celuloze. Ključne reči celuloza, otpadni papir, reciklaža, mehanički tretman, hemijski tretman ABSTRACT This paper describes the waste paper recycling process. Special emphasis is placed on the description of technological phase (disintegration or grinding, screening, cleaning, washing and/or flotation, water treatment and disposal of sludge), which are generally required in the processing of waste paper, and which also represent the main phases in the mineral processing. The waste paper is a potential secondary raw materials but due to degradation of cellulose physical properties which occur during the recycling, the cellulose fibers can be recycled a limited number of times. Because of this, the impact analysis of mechanical and chemical treatment on the secondary fiber quality is also given in the paper.