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| Study on Twin-Screw Alkaline Peroxide Mechanical Pulping of Whole Stalk of Caragana korshinskii with Alkali Pretreatment |
| Received:October 24, 2019 |
| DOI：10.11980/j.issn.0254-508X.2020.02.002 |
| Key Words:Caragana korshinskii twin-screw APMP alkali pretreatment H2O2 bleaching fiber morphology |
| Author Name | Affiliation | | LIU Yanchao | Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province， 430068 | | BI Shuying | Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province， 430068 | | TANG Bin | Beijing Jinluntang Technology Development Co., Ltd., Beijing, 100088 | | WU Hongfei | Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province， 430068 | | JIANG Chen | Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province， 430068 | | XIE Yimin | Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province， 430068 | | WANG Lei | Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province， 430068 | | WANG Peng | Research Institute of Pulp and Paper Engineering, Hubei University of Technology, Wuhan，Hubei Province， 430068 |
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| Abstract:The laboratory experiment and pilot test of twin-screw APMP pulping with alkali preteatment of whole stalk of Caragana korshinskii were carried out.The morphological characteristics of the twin-screw APMP pulp and the physical properties of the paper were investigated. The experimental results showed that after pretreatment of Caragana korshinskii by NaOH at 90℃, the paper obtained had higher tensile index, brigtness, ring crush strength and pulp yield than those of CMP of Caragana korshinskii. The pilot test further showed that the brigtness of twin-screw APMP pulp from Caragana korshinskii reached 70.1% after two stages of H2O2 bleaching(2% H2O2 per stage). The fiber length of the Caragana korshinskii twin-screw APMP pulp in the laboratory test was generally short, and the weight average length was 0.655 mm. The weight average fiber length of the pilot test twin-screw APMP pulp increased to 0.803 mm, indicating that the large-diameter twin-screw could reduce fiber cutting. |
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