碎解条件对废旧书刊碎化、油墨剥离和浮选脱墨的影响

研究碎浆条件对废纸脱墨工艺过程的影响。结果表明，废纸脱墨两段碎浆指标较好，两段碎浆浓度都控制在15％～20％脱墨效果显著。碎浆时间对白度影响不大，墨点数在一段和二段碎浆初期出现下降，并且一段碎浆下降急剧，然后两段都趋于缓慢。一、二段碎浆时间分别为20min和10min效果最佳。脱墨剂、水玻璃对灰度影响较大，但对白度影响不大。一、二段脱墨剂和水玻璃最佳用量分别为0．10g／g纸和0．15g／g纸。双氧水对白度影响较大，但对墨点数影响不大。氢氧化钠对脱墨效果影响甚微。废旧书刊纸经过脱墨后，墨点数小于50个／m^2，符合书刊用纸指标。     

脱墨化学品的脱墨选择性研究

本文介绍了四类脱墨化学品对脱墨选择性的研究。结果认为脂肪酸一表面活性剂添加2％硅酸盐能最有效地提高脱墨效率和提高浮选浆得率。     

静电复印废纸溶剂法脱墨机理初步研究

采用傅立叶变换红外光谱、图像扫描和显微分析等手段,研究了静电复印废纸溶剂法脱墨的机理.红外光谱分析表明,溶剂将油墨的连接料组分(如苯乙烯丙烯酸树脂等)溶出;油墨粒子的显微分析表明,随着抽提时间的延长,油墨粒子之间的结合越来越松散,从而在碎浆过程中油墨粒子更易被打散,同时,浮选后粘附在纤维上的油墨粒子粒径越来越小,数量也越来越少,但是抽提时间过长使得粒径较小(＜12μm)的油墨粒子数量增加,导致浮选效率有一定程度的下降.     

Overview of the pulp and paper industry from a chemical industry perspective

The major processes of the pulp and paper industry are overviewed with particular emphasis given to existing chemical requirements; processing trends are identified which may affect future chemical requirements. The pulp and paper industry represents a vast market for chemicals. On the papermaking side, overall chemical usage will probably increase due to ever greater product sophistication and emphasis on value-added grades. On the pulping side, the pressing needs for fibre conservation and more effective utilization of fibre sources can only be achieved through continuing exploitation of chemical developments.     

现代废纸脱墨技术概述

对现代废纸脱墨主要生产过程的发展进行了综述,并列举出在脱墨过程中不同化学药品的典型用量.     

浅析酶法脱墨及其优化因素对生产的影响

酶脱墨作为一种生物技术已经在造纸业得到广泛的关注和重视，该文论述了酶法脱墨的机理，并针对酶法脱墨自身的特点，提出了优化酶法脱墨的方法。     

废纸漆酶脱墨工艺条件研究

研究漆酶在废纸脱墨中的作用和工艺条件。漆酶在废纸脱墨中主要通过作用纸浆中残存木质素实现脱墨目的。漆酶在 65℃ ,碎浆浓度 7 1% ,时间 3 0min ,pH =9的条件下作用效果最佳 ,漆酶最佳用量为 8kg/t纸。     

废新闻纸酶法脱墨及其机理的探讨

考察了纤维素酶NS促进废纸脱墨的效果,研究了pH和温度对脱墨的影响,从不同的角度探讨了纤维素酶促进废纸脱墨的机理。实验结果表明,纤维素酶NS能有效提高废纸脱墨效果,纤维素酶NS促进废纸脱墨的最佳温度范围为40~60℃,pH范围为4.0~5.0;适量的纤维素酶NS可以提高纸浆的滤水性能,促进洗涤脱墨效率;纤维素酶促进废纸脱墨的根本原因可能在于对纤维的部分水解。     

浅析酶法脱墨及其优化因素对生产的影响

酶脱墨作为一种生物技术已经在造纸业得到广泛的关注和重视，综合论述了酶法脱墨的机理，并针对酶法脱墨自身的特点，提出了优化酶法脱墨的方法。     

On the clean and efficient thermal treatment of de-inking solid residues

Thermal treatment of contaminated de-inking sludge in a low-high-low (LHL) temperature reactor was investigated. Experiments were conducted in a Cahn TGA-171 furnace coupled with a Mattson Galaxy 5020 FTIR. Sludge samples (70 g) were heated up to 1770 K (50 K/min.), kept at that temperature for 5 min. and were then quenched (60 K/min.). During the LHL process the sludge underwent structural transformations from a mixture of fibers, through skeleton-like structures (45–110 μm), porous particles, to compact spheres (5–30 μm). It was shown that the LHL treatment results in a safe encapsulation of heavy metals (Pb, Cd) inside the ash and in a 78.2% decrease in the amount of mutagenic polycyclic aromatic hydrocarbons. The LHL method developed could help to solve waste management and environmental protection problems.