Improved Deinked Pulp for Newsprint, 1997 Pulping Conference Proceedings

Many newsprint mills have trouble running flotation deinked pulp when its proportion gets up to 30%. At that level, paper machine efficiencies tend to suffer due to various contaminants, such as stickies, or perhaps dissolved solids in the paper machine white water. It is believed that most contaminants stem from old magazine papers which flotation deink mills are forced to use to achieve optimum ink removal.

Mill data is presented to illustrate the effect of coated magazine paper on the ONP deinking system and how we have learned to cope with higher OMG addition rates.

We, in our industry, including chemical vendors and scientists are challenged to find ways to improve ONP flotation efficiency without reverting to OMG addition.

Author: Fulton, T.
Improved Deinked Pulp for Newsprint, 1997 Pulping Conference
Improved Deinked Pulp for Newsprint, 1997 Pulping Conference Proceedings
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