毛竹碱性亚硫酸钠-蒽醌制浆的研究

<正>试验结果表明:亚硫酸钠对总碱(均以氧化钠计)最佳比率为0.85,总碱量为18％(以氧化钠计),蒽醌用量0.05％,液比为1:4,在最高温度(170℃)制浆时间需要3.5h,粗浆得率42～45％(比传统的硫酸盐法纸浆得率高4～6％)和卡伯值17～25,碱性亚硫酸钠-蒽醌制得竹浆的物理强度性质相当于硫酸盐竹浆的强度。

THE PULPING OF BAMBOO (PHYLLOSTACHYS PUBESCENS) WITH ALKALINE SODIUM SULFITE-ANTHRAQUINONE

In this paper, characteristics and chemical composition of bamboo (phyllo-stachys pubescens) fibre are studied. With alkaline sodium sulfite-anthraquinone (ASP-AQ) pulping process, pulping characteristics of the bamboo fibre as well as its pulp physical strength are investigated. Results of tests indicate that opti mum ratio of sodium sulfite to total alkali (calculated as sodium oxide) is 0.85, the total amount of alkali is 18% (calculated as sodium oxide) and that of anthraquinone 0.05%. For the ratio of liquid to bamboo chips at 4:1, pulping time 3.5 of hours at the maximum temperature 170℃ is required. The total pulp yield thus obtained is 42~45%, 4~6% higher than the yield of the conventional kraft pulp, the kappa mumber being 17~25. The strength properties of ASP-AQ bamboo pulp is similar to those of kraft bamboo pulp. Therefore, ASP-AQ pulping process should be regarded as a better method to produce chemical pulp.