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| Optimal Parameters of Response Surface Methodology for Preparation of Magnesium Hydroxide Flame Retardant | |
| 作者姓名： | 刘志启 李丽娟 陈运法 李晓昆 张艳灵 沈根利 |
| 作者单位： | 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 |
| 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 |
| 收稿时间： | 2011-8-15 |
| 修稿时间： | 2011-11-1 |
OptimalParameters of Response Surface Methodology for Preparation of Magnesium Hydroxide Flame Retardant |
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| LIU Zhi-qi,LI Li-juan,CHEN Yun-fa,LI Xiao-kun,ZHANG Yan-ling,SHEN Gen-li.Optimal Parameters of Response Surface Methodology for Preparation of Magnesium Hydroxide Flame Retardant[J].Chinese Journal of Process Engineering,2011,11(6):1017-1023. | |
| Authors: | LIU Zhi-qi LI Li-juan CHEN Yun-fa LI Xiao-kun ZHANG Yan-ling SHEN Gen-li |
| 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 μm of D50 size.The difference in particle size of D10and D90 is less than 0.91 μm,and the purity very high. |
| Keywords: | magnesium hydroxide response surface methodology yield particle size |
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