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Feasibility Study of Lithium Slag as Filler in Papermaking
Received:September 01, 2023  
DOI：10.11980/j.issn.0254-508X.2024.02.009
Key Words:lithium slag  papermaking filler  tensile index  tearing index
Fund Project:锂资源与锂材料四川省重点实验室开放基金资助（LRMKF202308）。
Author NameAffiliationPostcode
HE Zhuofan College of Bioresources Chemical & Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
SONG Shunxi* College of Bioresources Chemical & Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021
Lithium Resources and Lithium Materials Key Lab of Sichuan Province， Tianqi Lithium Corporation， Chengdu， Sichuan Province， 610000 		610000
DU Shengjing College of Bioresources Chemical & Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
QU Xinhao College of Bioresources Chemical & Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
LI Yao College of Bioresources Chemical & Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
YIN Zhigang Tianqi Xinlong Co.， Ltd.， Chengdu， Sichuan Province， 610213
Lithium Resources and Lithium Materials Key Lab of Sichuan Province， Tianqi Lithium Corporation， Chengdu， Sichuan Province， 610000 		610000
ZHU Hongwei Yueyang Forest & Paper Co.， Ltd.， Yueyang， Hu’nan Province， 414000 414000
ZHANG Meiyun College of Bioresources Chemical & Materials Engineering， National Demonstration Center for Experimental Light Chemistry Engineering Education， Shaanxi Provincial Key Lab of Papermaking Technology and Specialty Paper Development， Shaanxi University of Science & Technology， Xi’an， Shaanxi Province， 710021 710021
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Abstract:The physical and chemical properties of two types of lithium slag were investigated， and the effect of lithium slag content on paper properties was explored. The results showed that the micro-morphology of lithium slag was irregular gravel-like， with a large internal surface area of the porous structure. The particle size of lithium slag was large and widely distributed. The brightness of 1# lithium slag and 2# lithium slag was 66.4% and 76.5%， respectively. The brightness of the paper was reduced after filling the lithium slag. The strength performance of the paper filled with lithium slag was better than the paper filled with PCC. At 18 wt% filler content， the tensile index of the paper filled with 1# lithium slag was 38% higher than that of the paper filled with PCC. At 12 wt% filler content， the tear index of the paper filled with 2# lithium slag was 41% higher than that of the paper filled with PCC. In addition， the water resistance of the paper filled with 2# lithium slag was comparable to that of the paper filled with PCC， which could meet the requirements of water resistance of paper. Therefore， lithium slag could be used in packaging paper with lower whiteness requirements.
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