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Research on Leaching and Restraining of Silicon in Pre-impregnation Stage of Bamboo Sulfate Cooking
  
DOI：10.11980/j.issn.0254-508X.2014.05.003
Key Words:bamboo pulp  alkali recovery  silicon-restrainer agent  leaching rate
Fund Project:本课题得到国家“十二五”科技支撑计划项目课题“高效竹材制浆造纸及其剩余物利用新技术研究与示范”（2012BAD23B02）、国家级大学生创新创业训练计划项目（201210708009）、国家自然科学基金（208-76092）、陕西科技大学学科带头人培育计划项目（20876092）的资助。
Author NameAffiliation
徐永建1 1.陕西科技大学轻工与能源学院，陕西省造纸技术及特种纸品开发重点实验室，教育部轻化工助剂重点实验室，陕西西安,710021 
胡忠宇1 1.陕西科技大学轻工与能源学院，陕西省造纸技术及特种纸品开发重点实验室，教育部轻化工助剂重点实验室，陕西西安,710021 
张鼎军2 2.贵州赤天化集团有限责任公司，贵州赤水，564707 
朱振峰3 3.陕西科技大学材料科学与工程博士后流动站，陕西西安，710021 
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Abstract:In kraft pulping, high silicon content of bamboo caused negative effects on the alkali recovery system and the recycling of lime mud. The leaching pattern of silicon and the prohibiting silicon from dissolving effect of the silicon restrainer in pre-impregnating stage were investigated based on the process of steam-liquid two phase two-tower continuous cooking using in Chitianhua Paper. The result showed that the leaching rate of silicon was rapid and stable under 140℃, while it was slow when the temperature was over 140℃. The silicon restrainer effect of prohibiting silicon from dissolving was the best when the temperature was 100℃. The dissolved silicon amount increased to the maximum in 60 min, and then became stable. The restraining effect of the restrainer was the best in 90~120 min.
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