旧新闻纸油墨和胶黏物在弱碱性条件下的去除特性  

Removal of Ink and Stickies in ONP Recycling under Weakly Alkaline Conditions

作　　者：崔春亮[1] 武书彬[1] 李擘[1] 张凤山[2] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室,广东广州510641 [2]华泰集团有限公司,山东广饶257335

出　　处：《纸和造纸》2011年第9期29-32,共4页Paper and Paper Making

基　　金：制浆造纸工程国家重点实验室2010年青年基金项目(项目编号:C7100610);华南理工大学2010年开放实验培育项目

摘　　要：在弱碱性条件下,添加不同用量的Na_2SiO_3和Na_2SO_3碎浆,研究这两种化学药品对旧新闻纸中的油墨以及胶黏物去除的影响,并与碱性条件下的脱墨效果进行比较。结果表明,在弱碱性条件下,在碎浆阶段,Na_2SiO_3对油墨的剥离作用比Na_2SO_3的要好;但在浮选阶段,Na_2SO_3的脱墨效果比Na_2SiO_3的脱墨效果好。从胶黏物的去除方面看,Na_2SO_3用量的改变没有导致胶黏物去除量发生较大的波动,而Na_2SiO_3用量的改变却引起胶黏物去除量发生较大的波动,当用量均为2%时,胶黏物浓度的去除率最大。碱性条件下,虽然在白度、胶黏物方面表现效果好,但是浮选脱墨效率低于Na_2SO_3的脱墨效果。总体来看,碱性脱墨还是有一定的优势;在弱碱性条件下,使用Na_2SiO_3的脱墨效果优于使用Na_2SO_3的脱墨效果。This study invested the influence of different chemicals on the removal of ink and sticldes in the ONP pulp under weakly alkaline condition, and contrast with effects under alkaline conditions. The research showed that under alkaline condition, Na2SiO3 had better deinking efficiency than Na2SO3 in the pulp progress. However, in the floating progress, the results was just opposite. As regards the removal efficiency of stickles, the two chemicals had the best efficiency when their amount was 0.2%. Under alkaline conditions, brightness and stickles had better effects than under weakly alkaline conditions, but deinking efficiency is worse than Na2SO3 in the pulp process. Totally speaking, it has more advantages than in weakly alkaline conditions; Na2SiO3 had better deinking efficiency than using Na2SO3 in weakly alkaline conditions.

关 键 词：旧新闻纸 NA2SIO3 Na2SO3 脱墨 胶黏物 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]