WET STRENGTH PAPER REPULPING： LABORATORY EVALUATION

编号 zgly0000332940

文献类型 期刊论文

文献题名 WET STRENGTH PAPER REPULPING： LABORATORY EVALUATION

学科分类 220.5570;林产化学加工学

作者 NishiK.Bhardwaj  VikasRajan  A.G.Kulkarni 

作者单位 CentralPulpandPaperResearchInstitute 

母体文献 天津科技大学学报 

年卷期 2004,19(A02)

页码 226-232

年份 2004 

分类号 TS74 

关键词 实验室评估  再制浆  湿润强度纸  无机化学  浸水时间  废纸  回收利用 

文摘内容 The recycling of wet strength papers in a normal recycling mill is often troublesome due to the severe operating conditions required to defibre wet strength papers. The various methods are presented which will quickly allow mills to determine the most effective pulping aids to use when repulping wet strength papers. The repulping of wet strength paper with inorganic chemicals was investigated in the laboratory. The effects of major variables, that is, repulping time, pulp consistency, soaking time, temperature, and reactant concentration in the repulping stage were examined using Plackett-Burman design. The repulping time was the most crucial & influential process variable affecting repulping characteristic and formation related properties. The more significant repulping process variables affecting pulp yield were repulping time, soaking temperature and pulp consistency whereas for formation index and feature size, repulping time, pulp consistency, soaking temperature and time were the more important variables. The formation index is increased by an increase in repulping time, pulp consistency and soaking time whereas the feature size is decreased by an increase in repulping time, soaking temperature and pulp consistency. The formation index and the rejects were more sensitive to changes in process variables than were the feature size or the pulp yield. The pulp recycled from wet strength waste paper had good physical strength properties。