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| 硫酸镁—氨气法生产氢氧化镁 |
| Research of Synthesizing Magnesium Hydroxide with Magnesium Sulfate and NH3 |
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| DOI： |
| 中文关键词: 氢氧化镁 氨气 硫酸镁 高浓度 |
| 英文关键词:Magnesium hydroxide Ammonia method Magnesium sulfate High slurry concentration |
| 基金项目:科技部科技支撑计划项目（2009BAE83802）;青海省科技厅基金项目（2010-G-221A）;博士后科学基金资助项目（118918）;西部之光项目（2011-1） |
| 作者 | 单位 | | 宋雪雪,李丽娟,时东,张波,姬连敏,刘志启,聂锋,王念贻,曾忠民,宋福根 | [1]中国科学院青海盐湖研究所,青海西宁810008 [2]中国科学院大学,北京100049 [3]西安电子科技大学理学院,陕西西安710071 |
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| 中文摘要: |
| 以硫酸镁和氨气为原料，直接制备高浓度阻燃剂氢氧化镁。通过单因素实验确定了最佳工艺条件，搅拌强度450r／rain，氨镁摩尔比2．4：1，氨气加入流量500mL／min，陈化时间60min，反应温度60℃，硫酸镁浓度2．50mol／L。用扫描电镜、X射线衍射仪和激光粒度仪表征产品的形貌、结构及粒度。在最佳工艺条件下得到，D5012．06μm，D90 18．99μm，料浆浓度7．37％，Mg收率68．02％，氢氧化镁纯度96．75％。 |
| 英文摘要: |
| Magnesium hydroxide of high slurry content was directly synthesized using magnesium sulfate and ammonia as the raw materials. This study showed that optimal process parameters were stirring speed of 450 r/min, ammonia to magnesium ratio of 2. 4： 1, ammonia addition rate of 500 mL/min, aging time of 60 min, reaction temperature of 60 ℃ and magnesium sulfate concentration of 2. 50 mol/L. The prod- ucts were eharaeterized by scanning electron microscope, X-ray diffraction and laser particle size analy- zer. The magnesium hydroxide was obtained by using the optimal reaction conditions with the Ds0 of 12. 06 μm,the D90 of 18.99 μm,and the purity of 96. 75%. The reaction yield reached 68.02% with a magnesium hydroxide slurry content of 7 37% |
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