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稀土应用于混合阔叶材硫酸盐浆的氧碱漂白中，引起纸浆质量和性能的变化。本文介绍了用Ｒｕｌａｎｄ法分析纸浆的绝对结晶度，研究了稀土氧碱处理后纸浆结晶度的变化，对稀土在纸浆氧漂中的行为及其对纸浆纤维素的作用进行了探讨。
Rare earths are used in the bleaching of oxygen bleaches of mixed hardwood kraft pulp, causing changes in pulp quality and performance. In this paper, the absolute crystallinity of pulp was analyzed by Ruland method. The changes of crystallinity of pulp after the treatment of rare earth alkali were studied. The behavior of rare earth in pulp oxygen bleaching and its effect on pulp cellulose were also discussed.