Zbornik gozdarstva in lesarstva 70, s. 53 - 69
UDK  676.022
Prispelo / Received: 01.04.2003 Izvirni znanstveni članek
Sprejeto / Accepted: 23.04.2003 Original scientific paper
RAZVOJ IN UPORABA KOMBINIRANIH RETENCIJSKIH
SREDSTEV
Vera RUTAR*, Tamara STARE **
Izvleček
Flokulacija je proces tvorbe flokul oziroma aglomeracije koloidnih delcev ter vpliva na formacijo papirja, ki je
odvisna od mikro in makro homogenosti vlakninske suspenzije. Izbira papirniškega sistema, torej vrsta vlaknin,
polnil in dodatkov, vpliva na prisotnost snovi, ki krožijo v sistemu ter na učinkovitost delovanja flokulacijskih
ali retencijskih sredstev. Uporabili smo sintetizirana retencijska sredstva, polimere z različno molekulsko maso
ter vrsto in gostoto naboja.
Mehanizem vezave delcev polnil in fine frakcije oziroma retencija je pogojen z adsorpcijo retencijskih sredstev
na omenjene komponente ter tvorbo flokul. V zaprtih krogotokih se količina neadsorbiranih snovi kot tudi
desorbiranih povečuje in obremenjuje vode, ki krožijo v sistemu.
Ključne besede: retencija, retencijska sredstva, elektrokinetski parametri
THE DEVELOPMENT OF NEW RETENTION AGENTS FOR
PAPERMAKING INDUSTRY
Abstract:
Flocculation is a process of flock formation or agglomeration of colloidal parts. It affects the formation of
paper, which depends on micro- and macro-homogeneity of pulp suspension. Selection of a system, i.e. of
various sorts of pulp, fillers and additives, affects the presence of stock flow in the system as well as the
efficiency of flocculating and retention agents’ activities. Flocculants are synthesized chemical agents,
polymers with differentiation in molecular weight as well as in charge sort and density. Filler parts and fine
fraction bonding mechanism, i.e. retention, is conditional on adsorption of retention aids to the abovementioned
components and on flocculant formation. The quantity of non-adsorbed as well as desorbed substances in
closed circuits increases and charges the waters circulating within the system.
Key words: retention, retention agents, electrokinetic parameters
                                           
* Inštitut za celulozo in papir, Bogišičeva 8, 1000 Ljubljana, SVN
** Belinka KTM, Ob železnici 14, 1001 Ljubljana, SVN
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Zbornik gozdarstva in lesarstva, 70
VSEBINA
CONTENTS
1 UVOD
INTRODUCTION........................................................................... 55
2 MATERIALI IN METODE
MATERIALS AND METHODS .................................................... 57
3 REZULTATI
RESULTS........................................................................................ 60
4 ZAKLJUČEK
CONCLUSION ............................................................................... 67
5 SUMMARY .................................................................................... 67
6 VIRI
REFERENCES ................................................................................ 69