Welcome to Imerys Performance Additives Division

Deinked pulp - Recycled fiber

RCF and DIP production Environment-friendly 'Total Deposit Control' solutions for cleaner recycled pulp, greater mill productivity and higher quality finished paper

Imerys offers bespoke talc- and bentonite-based Total Deposit Control (TDC) solutions for improving recycled fiber (RCF) and deinked (DIP) pulp cleanliness, mill productivity and the quality of the final paper products. 

Pulp cleanliness is critical for achieving optimum runnability in paper production. The raw material leaving the pulping process must be as free of contaminants as possible.

In RCF and DIP pulp production, the main cause of runnability problems are 'stickies' such as adhesives, inks, plastics, binders and hotmelts, which forms deposits in screens, filters, pipes, fabrics and dryer cylinders causing bad dewatering, holes in the finished paper and leading to excessive broke and even web breaks at the paper mill.

Stickies problems result is reduced runnability and lower total machine efficiency which directly impacts earnings.

Imerys' bespoke talc- and bentonite-based Total Deposit Control solutions are environmentally friendly substitutes to chemical stickies control agents. They improve productivity and enable mills to work with closed water circuits - reducing river pollution and water consumption.

The optimal flocculation behavior and high adsorption capacity of our solutions also improve fiber and filler retention and optimize dewatering behavior during sheet forming. 

Our cationic grades significantly reduce anionic charge in the system helping to reduce use of more expensive and less environmentally friendly cationic polymers. They are particularly effective in pulps containing high levels of anionic trash.

TDC can bring huge benefits

It keeps the recycled paper production process streams clean and increases mill productivity:

  • Improving pulp quality and fiber and filler retention 
  • Preventing deposits in the equipment 
  • Increasing machine runnability and reducing downtime
  • Reducing broke on the paper machine
  • Reducing felt cleaning and leading to fewer felt changes 
  • Extending wire and machine fabric life 
  • Improving dewatering and drainage time
  • Allowing mills to work with closed water circuits, reducing water consumption and river pollution

We offer a full range technical and process support services to help you match the right mineral grade to your application requirement.

Please contact us, we will be only too happy to help

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