白水处理的混合沉淀物对纸张性能影响的探究  

Study on the Effect of White Water Treated Mixed Sediment on Paper Performance

作　　者：李洁[1] 刘海棠[1,2,3] 袁晓娇 陈婷[1] 张晓晨[1] 刘婧 安永贞[1] 高玉杰 LI Jie;LIU Haitang;YUAN Xiaojiao;CHEN Ting;ZHANG Xiaochen;LIU Jing;AN Yongzhen;GAO Yujie(China Light Industry Key Laboratory of Papermaking and Biorefinery,Tianjin Key Laboratory of Pulp and Paper,College of Light Industry Science and Engineering,Tianjin University of Science&Technology,Tianjin 300457,China;Key Laboratory of Biomass Energy and Material,Jiangsu Province,Nanjing 210042,China;Key Laboratory of Marine Resources and Chemistry of Tianjin(Tianjin University of Science&Technology),Tianjin 300457,China)

机构地区：[1]中国轻工业造纸与生物质精炼重点实验室,天津市制浆造纸重点实验室,天津科技大学轻工科学与工程学院,天津300457 [2]江苏省生物质能源与材料重点实验室,南京210042 [3]天津市海洋资源与化学重点实验室(天津科技大学),天津300457

出　　处：《天津造纸》2019年第3期10-15,共6页Tianjin Paper Making

摘　　要：磷石膏晶须本身具有溶解性,作为填料加入造纸系统时,总会有部分溶解进入白水循环系统,使白水中的Ca^2+和SO4^2-不断积累而对湿部运行、造纸设备和成纸性能等产生较大的影响。实验通过Ba(OH)2和H3PO4与白水体系中的SO4^2-和Ca^2+反应,生成混合沉淀物,再将其回用于造纸体系之中。结果表明,较未添加混合沉淀物的纸张,混合沉淀物加填量为5%或10%时,填料在纸张内的留着率明显增加,而且纸张的各项性能也有较好的保持,白度、不透明度和撕裂度随之增加,抗张强度、耐破度和耐折度有所下降。Phosphogypsum whisker has solubility.When phosphogypsum whisker is added to the papermaking system as a filler,it partially dissolves into the white water circulation system,which will cause Ca^2+and SO4^2-accumulate in white water continuously and have a greater impact on wet end operation,papermaking equipment and papermaking et al.In the experiment,Ba(OH)2 and H3PO4 reacted with SO4^2-and Ca^2+in the white water system and generated mixed precipitates,which were reused in the papermaking system afterwards.The results show that the retention rate of filler in the paper was significantly increased when the mixed sediment was added at 5%or 10%compared with paper without mixed sediment addition,furthermore,most properties of paper have been well maintained,such as,the whiteness-brightness,opacity and tearing increased,and the tensile strength,burst resistance and folding resistance decreased.

关 键 词：磷石膏晶须 白水循环系统 混合沉淀物 纸张性能 

分 类 号：TS727[轻工技术与工程—制浆造纸工程]