对以卤水和石灰乳为原料制备氢氧化镁进行了实验研究,系统考察了反应温度、卤水浓度、加料时间、陈化时间等因素对氢氧化镁质量的影响,得到了最适宜的工艺条件,即反应温度80℃、卤水浓度1.5mol/L、加料时间2h、陈化时间3h.产品中氢氧化镁含量高于98%,氧化钙含量小于0.2%.采用扫描电子显微镜(SEM)、X射线衍射(XRD)和激光粒度仪等对产品进行表征.结果表明,制备的氢氧化镁颗粒呈片状结构,粒度分布均匀.
Magnesium hydroxide is prepared with brine and lime.The influences of reaction temperature,concentration of brine,feeding time and aging time on the quality of product are investigated and optimal operation conditions are obtained.The optimal conditions are reaction temperature,80℃ ; concentration of brine,1.5mol/L; feeding time,2h; and aging time,3h.The results show that the content of magnesium hydroxide in the product is more than 98%,while the content of calcium oxide is lower than 0.2%.The product is characterized by scanning electron microscopy,X-ray diffraction and BET analyzer.The morphology of particles is lamellar,and crystal is perfect and uniform.
参考文献
| [1] | Carpentier F.;Le Bras M.;Delobel R.;Foulon M.;Bourbigot S. .Charring of fire retarded ethylene vinyl acetate copolymer - magnesium hydroxide/zinc borate formulations[J].Polymer Degradation and Stability,2000(1):83-92. |
| [2] | Norio T .Function of inorganic powder surface by the grafting of polymers[J].Journal of Polymer,1996,45(06):421. |
| [3] | 吴健松,李海民,李财花.水热法制备阻燃型氢氧化镁[J].无机盐工业,2005(01):19-20,45. |
| [4] | 林慧博,印万忠,南黎,韩跃新.纳米氢氧化镁制备技术研究[J].有色矿冶,2003(01):33-36. |
| [5] | 王路明.石灰卤水法制备超细氧化镁的研究[J].海湖盐与化工,2001(01):21-24. |
| [6] | 张勇,袁建军.石灰卤水法制备氢氧化镁的反应条件探讨[J].天津科技大学学报,2006(02):81-85. |
| [7] | 韩海波,赵华,刘润静,胡永琪,胡庆福,李彦菊.卤水-石灰乳法制备纳米氢氧化镁新工艺研究[J].无机盐工业,2008(02):31-32,42. |
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