摘要
The metal ion contents in the whitewater under the wire section of paper machine were determinated by the atomic absorption spectrometry, and the effects of the contents of Fe 3 , Mn 2 , Ca 2 in whitewater on the retention of the pulp and filler and the Zeta potential of pulp were also investigated. The results showed that the three metal ions accumulating in the whitewater were Fe 3 , Mn 2 and Ca 2 , and their contents were 0.088, 0.035 and 87.2 mg/L, respectively. Moreover, the metal ions were proved to be of benefit to increase the retention of the pulp and filler. The Zeta potential of the pulp was less affected by Fe 3 and Mn 2 , but was affected by high content of Ca 2 significantly. The Zeta potential of the pulp increased rapidly with the increase of the concentration of Ca 2 . The Zeta potential of the pulp also increased with the concentration of CPAM increasing when Ca 2 was in centain level. It would enhance the flocculation of the pulp and filler causing by CPAM.
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