1. Effect of PCC filler on dewatering of fiber suspension.
- Author
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Liimatainen, Henrikki, Kokko, Sirpa, Rousu, Paivi, and Niinimäki, Jouko
- Subjects
CALCIUM carbonate ,PINE ,EUCALYPTUS ,SULFATE pulping process ,BIRCH ,CAKE filters ,ADDITION polymerization ,PAPER ,ELECTROSTATIC analyzers ,DRYING - Abstract
The article discusses the study on the effect of precipitated calcium carbonate (PCC) paper filler on water removal from pine, eucalyptus and birch kraft pulps in the vacuum filtration process. The study was done through the measurement of average specific filtration resistances (SFR). The PCC particles can improve dewatering efficiency by attaching to the fibers by electrostatic attraction and reducing total surface area. It has been found out that the deposition reduces the total surface area of the stock and increases the dewatering efficiency, thereby reducing the SFR the suspension. In addition, when the anionic charge of the fibers increases, the deposition of PCC particles increases and filtration resistance decreases.
- Published
- 2006