天津科技大学学报Issue(4)：24-28,5.
改善碱回收白泥粒径分布的研究
Improving the Particle Size Distribution of White Sludge from Alkali Recovery
摘要
Abstract
Wide particle size distribution and large amount of small particle size components were the main reasons for poor application performance of white sludge from alkali recovery as paper fillers. In this research,quicklime and green liquor from an alkali recovery line were used as the raw materials for the preparation of white sludge,and the process parameters for the preparation were investigated;the micro-properties and application performance of the laboratory-made white sludge,a white sludge from alkali recovery line,and a commercial precipitated calcium carbonate(PCC)were compared. The results showed that uniform and integrated white sludge with 2,μm to 25,μm particle size distribution and 7.93,μm me-dian particle size could be obtained,when the stirring speed of slaking was 200,r/min,slaking time 15,minutes,stirring speed of causticizing 200,r/min,and the ratio of green liquor in slaking and causticizing reactions was 1∶2. The white sludge ob-tained in this research has better drainability and retention,and can provide paper with higher degree of brightness and opac-ity,though inevitably higher filler retention will impair paper strength.关键词
碱回收白泥/粒径分布/应用性能/轻质碳酸钙Key words
white sludge from alkali recovery/particle size distribution/application performance/precipitated calcium carbonate分类
轻工纺织引用本文复制引用
王进,危鹏,陈金山,刘成良,周祖文..改善碱回收白泥粒径分布的研究[J].天津科技大学学报,2013,(4):24-28,5.基金项目
国家自然科学基金资助项目(31100436)；“十二五”国家科技支撑计划资助项目(2011BAC11B07) （31100436）
