【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。更多还原

【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.更多还原