关键词: font-family: 宋体, mso-bidi-font-size: 12.0pt, mso-ascii-font-family: 'Times New Roman', mso-hansi-font-family: 'Times New Roman', mso-bidi-font-family: 'Times New Roman', mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, 高纯硝酸锶')">mso-bidi-language: AR-SA">高纯硝酸锶, 工艺参数, 正交实验

Abstract: Starting from the reaction principle,high purity strontium nitrate was prepared with industrial strontium carbonate or its seconds as raw materials by the following process:acidification through industrial nitric acid at first,make use of common-ion effect to remove most of barium ions,re-precipitate to eliminate barium,iron,and other impurities,then evaporation to crystallize so as to remove alkaline earth metals and alkali metals like calcium,and high purity strontium nitrate will be prepared through filtering and drying.By orthogonal experiment,appropriate barium and iron removing parameters were found and crystallization process parameters as well as drying temperature were determined.As the products prepared according to the above method had high purity and good quality,it′s meaningful for the guidance of actual production. 

Key words: font-family: "Times New Roman", mso-bidi-font-size: 12.0pt, mso-font-kerning: 1.0pt, mso-ansi-language: EN-US, mso-fareast-language: ZH-CN, mso-bidi-language: AR-SA, high purity strontium nitrate;process parameters;orthogonal experiment')">mso-fareast-font-family: 宋体">high purity strontium nitrate;process parameters;orthogonal experiment