Improved Deinking and Stickies Removal, 2016 Pulping, Engineering, Environmental, Recycling, Sustainability (PEERS) Conference Proceedings


Previous work have shown that a novel flotation deinking reagent based on modified kaolin was able to give more efficient separation and removal of the ink and dirt particles from recovered paper.  The mechanism for this reagent is based on the ability of the modified kaolin to act as a collector for the fine ink, dirt and contaminant particles.  Deinking mills using this novel deinking reagent showed an increase in brightness and lower dirt count values of the deinked pulp.  Further work has been carried out to determine if this mechanism can be used to improve the removal of stickies in recovered paper.  Test results showed that the use of this modified kaolin together with a reagent capable of effectively separating the sticky contaminants from the fiber improved the removal of stickies.  Interestingly, the synergy of this reagent with the modified kaolin also resulted in further improvement in ink and dirt removal. 

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Improved Deinking and Stickies Removal, 2016 Pulping, Engine
Improved Deinking and Stickies Removal, 2016 PEERS
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Author: Cesar Basilio