轻烧粉蒸氨液中杂离子对氢氧化镁晶体的影响  

Influence of impurity ions on magnesium hydroxide product in ammonia-evaporation refined solution

作　　者：李雪[1] 张滢[1] 侯睿[2] 张研[1] 刘云义[1] 

机构地区：[1]沈阳化工大学化学工程学院,辽宁沈阳110142 [2]中国寰球工程公司辽宁分公司

出　　处：《无机盐工业》2016年第10期23-25,共3页Inorganic Chemicals Industry

基　　金：辽宁省自然基金项目(L2015020609);辽宁省创新团队项目(LT2013010)

摘　　要：以轻烧粉精制液和氨气为原料,研究了蒸氨精制液中杂质离子对氢氧化镁形貌的影响。选取阳离子NH_4^+、Ca^(2+)和阴离子SO_4^(2-)作为研究对象,考察了其对氢氧化镁的形貌和颗粒大小的影响。采用扫描电镜(SEM)、X射线衍射仪(XRD)和激光粒度仪对产品进行表征。结果表明,NH_4^+、Ca^(2+)对氢氧化镁产品的性能影响较小,而SO_4^(2-)对氢氧化镁产品的形貌和粒径影响较显著。并利用氯化钡除去溶液中的SO_4^(2-),比较未除硫、除硫后与用纯氯化镁制备的产品的差别。With the light burning powder refined liquid and ammonia as raw materials,the influence of impurity ions in steamed ammonia refining fluid on the magnesium hydroxide morphology was investigated.Cationic NH_4~＋,Ca^（2＋）,and anion SO_4^（2-） were selected as the research objects to investigate their influences on the morphology and particle size of magnesium hydroxide.The products were characterized by scanning electron microscopy（SEM）,X-ray diffraction（XRD）,and laser particle size analyzer.Results showed that NH_4~＋ and Ca^（2＋） little influenced on the performance of magnesium hydroxide product,and the SO_4^（2-） had a great influence on the morphology and particle size of magnesium hydroxide product.BaCl_2 was used to remove SO_4^（2-） in the solution.The difference of the undesulphurized and desulphurized products was also compared with the product prepared with pure magnesium chloride.

关 键 词：轻烧粉 氨气 杂质离子 氢氧化镁 

分 类 号：TQ132.2[化学工程—无机化工]