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固相法制备高纯超细氢氧化镁的工艺

Preparation of High-Purity Ultrafine Magnesium Hydroxide Using Solid-State Reaction Method

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【作者】 宋兴福王相田庞卫峰汪瑾于建国

【Author】 SONG Xing-fu,WANG Xiang-tian,PANG Wei-feng,WANG Jin,YU Jian-guo~*(School of Resource and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China)

【机构】 华东理工大学资源与环境工程学院华东理工大学资源与环境工程学院 上海200237上海200237上海200237

【摘要】 以自制的六氨氯化镁为原料,采用常温固相法制备了高纯超细氢氧化镁。对固相法制备高纯超细氢氧化镁的工艺条件进行了研究,得到优化的制备工艺条件为:M gC l2.6NH3和M gC l2.6H2O摩尔比1∶1,球磨速度350 r/m in,球磨时间15 m in,球料比5∶1、充填率52%,磨介1份10 mm大球和2份6 mm小球。对制得的超细氢氧化镁进行化学组成分析,结果表明:氢氧化镁含量在99.7%左右,杂质含量低于0.3%。粒度分析表明产品平均粒径为158 nm,变异系数(CV)为0.194。

【Abstract】 High-purity ultrafine magnesium hydroxide was prepared by ambient temperature solid-state reaction using hexammoniated magnesium chloride as raw material.It was researched to obtain an appropriate operated condition:hexammoniated magnesium chloride and magnesium chloride in a molar ratio of(1∶1,) a rotating speed of grinding machine at 350 r/min for 15 min,grinding balls and raw materials in a ratio of 5∶1 within filling rate of 52%,10 mm and 6 mm grinding balls in a ratio of 1∶2.The analysis of chemical component shows a content of magnesium hydroxide about 99.7%,a content of impurity lower than 0.3%.The result shows that an average particle size is 158 nm by laser particle analyzer,which coefficient variance(CV) is 0.194.

【基金】 上海市纳米科技与产业发展促进中心项目经费支持(0212nm045)
  • 【文献出处】 华东理工大学学报(自然科学版) ,Journal of East China University of Science and Technology , 编辑部邮箱 ,2005年05期
  • 【分类号】TQ132.2
  • 【被引频次】23
  • 【下载频次】333
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