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›› 2011, Vol. 11 ›› Issue (6): 1017-1023.

• 过程与工艺 • 上一篇    下一篇

Optimal Parameters of Response Surface Methodology for Preparation of Magnesium Hydroxide Flame Retardant

刘志启 李丽娟 陈运法 李晓坤 张艳灵 沈根利   

  1. 中国科学院青海盐湖研究所，中国科学院盐湖资源与化学重点实验室 中国科学院青海盐湖研究所，中国科学院盐湖资源与化学重点实验室 中国科学院过程工程研究所 青海大学化工学院 中国科学院青海盐湖研究所，中国科学院盐湖资源与化学重点实验室 中国科学院过程工程研究所
  • 收稿日期:2011-08-15 修回日期:2011-11-01 出版日期:2011-12-20 发布日期:2011-12-20
  • 通讯作者: 刘志启

Optimal Parameters of Response Surface Methodology for Preparation of Magnesium Hydroxide Flame Retardant

LIU Zhi-qi LI Li-juan CHEN Yun-fa LI Xiao-kun ZHANG Yan-ling SHEN Gen-li   

  1. Key Laboratory of Salt Lake Resources and Chemistry，Qinghai Institute of Salt Lakes，Chinese Academy of Sciences Key Laboratory of Salt Lake Resources and Chemistry，Qinghai Institute of Salt Lakes，Chinese Academy of Sciences State Key Lab. Multiphase Complex System, Inst. Process Eng., Chinese Academy of Sciences Chemical Engineering Institute, Qinghai University Key Laboratory of Salt Lake Resources and Chemistry，Qinghai Institute of Salt Lakes，Chinese Academy of Sciences Institute of Process Engineering, Chinese Academy of Sciences
  • Received:2011-08-15 Revised:2011-11-01 Online:2011-12-20 Published:2011-12-20
  • Contact: LIU Zhi-qi

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摘要： The yield of magnesium hydroxide was investigated via response surface methodology using bischofite and aqueous ammonia as raw materials. The experimental results indicated that the effects of reaction temperature, magnesium ion and aqueous ammonia concentrations on the yield of magnesium hydroxide gradually decreased. In particular, reaction temperature and magnesium ion concentration had a significant influence on the yield. After the regression and fitting of the response value and each factor, the regression equation was obtained. As proven by experiments, the predicted value and actual value showed a good fit. The products of the center experiment were characterized by particle size analysis, scanning electron microscopy, and X-ray diffraction. The results show that the morphology is irregular and shows a lamellar structure. The particles have a narrow size distribution ranging from 0.64 to 0.68 mm of D50 size. The difference in particle size of D10 and D90 is less than 0.91 mm, and the purity very high.

关键词: magnesium hydroxide, response surface methodology, yield, particle size

Abstract: The yield of magnesium hydroxide was investigated via response surface methodology using bischofite and aqueous ammonia as raw materials. The experimental results indicated that the effects of reaction temperature, magnesium ion and aqueous ammonia concentrations on the yield of magnesium hydroxide gradually decreased. In particular, reaction temperature and magnesium ion concentration had a significant influence on the yield. After the regression and fitting of the response value and each factor, the regression equation was obtained. As proven by experiments, the predicted value and actual value showed a good fit. The products of the center experiment were characterized by particle size analysis, scanning electron microscopy, and X-ray diffraction. The results show that the morphology is irregular and shows a lamellar structure. The particles have a narrow size distribution ranging from 0.64 to 0.68 mm of D50 size. The difference in particle size of D10 and D90 is less than 0.91 mm, and the purity very high.

Key words: magnesium hydroxide, response surface methodology, yield, particle size

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