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| Improving Wollastonite Filler Retention by Adding Polyaluminium Chloride |
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| DOI：10.11980/j.issn.0254-508X.2013.11.002 |
| Key Words:polyaluminium chloride wollastonite modification filler retention |
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| Abstract:In order to further improve wollastonite filler retention rate in papermaking，the effects of adding polyaluminium chloride（PAC）into wollastonite filler suspension on Zeta potential and filler retention rate were investigated in the paper. The results showed that modified wollastonite with PAC had the highest retention rate in the handsheets at PAC dosage of 5% (based on wollastonite filler) while the Zeta potential of the wollastonite was close to zero. But the optimum filler retention was achieved at PAC dosage of 1.0~1.5% when CPAM was added as retention aid. PAC-modified wollastonite retention in high yield pulp was higher than that in chemical pulp. |
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