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| Study on the Deinking Performance of Porous Calcium Silicate-filled Munken Paper |
| Received:May 28, 2022 |
| DOI：10.11980/j.issn.0254-508X.2022.07.006 |
| Key Words:porous calcium silicate munken paper deinking performance ink removal rate high bulk |
| Author Name | Affiliation | Postcode | | SHI Menghua* | Yueyang Forest & Paper Co., Ltd., Yueyang, Hu’nan Province, 414002 | 414002 | | DONG Chao | Yueyang Forest & Paper Co., Ltd., Yueyang, Hu’nan Province, 414002 | 414002 | | LIU Chunjing | Yueyang Forest & Paper Co., Ltd., Yueyang, Hu’nan Province, 414002 | 414002 | | LI Dan | Yueyang Forest & Paper Co., Ltd., Yueyang, Hu’nan Province, 414002 | 414002 | | WEI Xinxin | School of Chemistry and Chemical Engineering, Changsha University of Science & Technology, Changsha, Hu’nan Province, 410114 | 410114 | | WANG Yulong | School of Chemistry and Chemical Engineering, Changsha University of Science & Technology, Changsha, Hu’nan Province, 410114 | 410114 | | DAI Yang | School of Chemistry and Chemical Engineering, Changsha University of Science & Technology, Changsha, Hu’nan Province, 410114 | 410114 | | LI Yulin | School of Chemistry and Chemical Engineering, Changsha University of Science & Technology, Changsha, Hu’nan Province, 410114 | 410114 | | WU Xuexun | Hunan Refining New Material Technology Co., Ltd., Changsha, Hu’nan Province, 410221 | 410221 |
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| Abstract:In this study， physical properties of porous calcium silicate were analyzed， and the deinking performance of porous calcium silicate-filled munken paper was studied. The results showed that the porous calcium silicate with a honeycomb structrue was of low density， large specific surface area， high porosity and brightness， and low abrasion； the porous calcium silicate-filled munken paper showed good deinking performance with high pulp brightness increase， and ink removal rate， residual ink concentration and deinked pulp brightness increase after flotation deinking were 84.3%， 159.9 mg/kg and 17.1%， respectively， significantly higher than those of （PCC） counterpart （corresponding to 68.9%， 230.2 mg/kg and 10.4%， respectively）； however， the deinked pulp reject rate of the porous calcium silicate filled munken paper was slightly higher than that of the PCC filled munken paper， which were 3.44% and 2.32%， respectively； the handsheet analysis showed that the deinked pulp of porous calcium silicate-filled munken paper had higher bulk， breaking length and folding endurance strength， which was beneficial to producing high-bulk and high-strength paper. |
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