摘要
以卤水为原料,氨气为碱性沉淀剂,常温沉淀法制取氢氧化镁的工艺研究。研究了反应过程中pH值的变化趋势,氨镁比及镁离子浓度对沉镁效率的影响,镁离子浓度和氢氧化镁粒度的关系。并且对制得的氢氧化镁煅烧后的氧化镁进行了XRD和ICP分析,所得到的实验数据为工业化实际提供生产指导。
In this paper, a technology for preparing magnesium hydroxide with brine as raw material and ammonia gas as alkaline precipitant at normal temperature was studied. The paper also investigated the change trend of pH value of the solution during the process of reaction, the effects of the molar ratio of ammonia to magnesium and concentrations of magnesium ion on removal efficiency of magnesium ions, and the relationship between concentrations of magnesium ions and magnesium hydroxide particle size. Further, analysis of XRD and ICP were conducted to magnesium oxide gained from calcined magnesium hydroxide. The statistics from the experiment provided applicable guidance for industrial production.
出处
《盐业与化工》
CAS
2009年第5期14-17,共4页
Jounral of Salt and Chemical Industry
基金
天津市科技支撑重点项目"氨法苦卤综合利用关键技术的研究"(08ZCKFSH02400)
关键词
氨
氢氧化镁
卤水
ammonia
magnesium hydroxide
brine
