| Abstract:In this paper, two fixing agents, Hybrid 7655 and Hybrid 8185 and their effects on control of sticky contaminants were studied. Pulps were sampled from three major points of a deinking pulping line, i.e. the post-flotation, the DIP storage tower and the PM head box. Deposition of sticky contaminants was evaluated by the aluminum foil method, and influences of applying fixing agent on the contents of dissolve and colloidal substances, the filtrate turbidity, the cationic demand and Zeta potential of the pulps were determined. The results showed that deposits decreased significantly, meanwhile, DCS, turbidity and cationic demand decreased accordingly. The fixing agent Hybrid 7655 was more effective for removing stickies. Moreover, the fixing agents showed a better performance when it were added into the DIP storage tower. Adding fixing agents deteriorated the paper physical properties to some extent, the negative effect depended on the dosage added. |
