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| Investigation on Removal of Silicate in Green Liquor by Flocculation |
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| DOI：10.11980/j.issn.0254-508X.2014.04.006 |
| Key Words:green liquor modified bentonite-CPAM-calcium oxide flocculation silicate removal |
| Fund Project: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）；国家自然科学基金（20876092）；陕西科技大学学科带头人培育计划项目（20876092）。 |
| Author Name | Affiliation | | 李 雪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,陕西西安,710021 | | 林 涛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,陕西西安,710021 | | 徐永建1,2,3 | 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,陕西西安,710021；2.陕西科技大学材料科学与工程博士后流动站,陕西西安,710021；3.贵州赤天化集团有限责任公司,贵州赤水,564700 | | 张鼎军3 | 3.贵州赤天化集团有限责任公司,贵州赤水,564700 | | 朱振峰2 | 2.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:Flocculation process was used to remove the silicate in green liquor from bamboo pulping chemical recovery. The chose of flocculant, the process parameters of flocculation was described. It was found that the Na-bentonite-CPAM-calcium oxide motified with aluminum salt had an efficient effect on silicate removal, the maximum removal rate reached to 99.9%. The optimum operating conditions were: the dosage of the aluminum salt modified Na-bentonite was 26 g/L, the dosage of CPAM was 15 mL/L, the calcium oxide was 15 g/L, stirring time was 10 min, clarification time was 5 min. Finally the process for commercial application was confinmed. |
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