HIGH CONSISTENCY PULPING OF OLD NEWSPRINT AND ITS FLOTATION PROPERTIES  

作　　者：ChunhuiZhang MenghuaQin 

机构地区：[1]FacultyofLightChemicalandEnvironmentalEngineering,ShandongInstituteofLightIndustry,Jinan250100

出　　处：《天津科技大学学报》2004年第A02期250-254,共5页Journal of Tianjin University of Science & Technology

摘　　要：The mechanical and chemical effect on the pulping properties of the old newsprint was studied using a FORMAX Micro-Maelstrom Laboratory Pulper, and the flotation conditions such as velocity of air flow, air pressure and flotation time were also discussed with a FORMAX Deink Cell. The results show that sodium hydroxide, sodium silicate, hydrogen peroxide and deinking agent are the key factors in the chemical effect, and pulping consistency is more important than pulping time and rotation speed in the mechanical effect during the high consistency pulping of the ONP. In general, the chemical effect has a greater influence on the deinked pulp properties than the mechanical effect.The mechanical and chemical effect on the pulping properties of the old newsprint was studied using a FORMAX Micro-Maelstrom Laboratory Pulper, and the flotation conditions such as velocity of air flow, air pressure and flotation time were also discussed with a FORMAX Deink Cell. The results show that sodium hydroxide, sodium silicate, hydrogen peroxide and deinking agent are the key factors in the chemical effect, and pulping consistency is more important than pulping time and rotation speed in the mechanical effect during the high consistency pulping of the ONP. In general, the chemical effect has a greater influence on the deinked pulp properties than the mechanical effect.

关 键 词：旧新闻纸 浮选 化学脱墨 高浓度制浆 回收利用 废纸 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]