氟化铵与硫酸钠制氟化钠工艺研究

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中图分类号：TQ131.12 文献标识码：A 文章编号：1004-8901（2026）01-0030-04

Study on the Process of Producing Sodium Fluoride from Ammonium Fluoride and Sodium Sulphate

FUYu-jie，LI Zhi-xiang，SHEN Ying-kun，MA Hang，WANBang-long，JIANG Xing-zhi，YANG Xiao （Research and Deuelopment Centre，Yunnan Yuntianhua Co.，Ltd.，Kunming Yunnan 650228，China）

Abstract：Thisstudyinvestigatestheproductionofsodumfluorideusingammonumfluorideandby-productsodmsulpateasramaterials， examiningtheinflueneofvariousfactorsonproductqualityandyieldExperimentsdmonstratetatoptimalconditiosareachieedbyon trolling reaction temperature at 80∘C ，reaction time at 3 hours，ammonium fluoride excess at 20% ，adjusting pH to approximately7 with sodium hydroxide，and selecting sodium source mass ratio as NaOH：Na2SO4=0.5：9.5. In the secondary synthesis stage，ammonium fluoride and sodium sulphate feed rates are set at 8.2% of the primary input.Meeting the above conditions，the sodium fluoride product meets or even exceeds first-grade quality standard as set in GB/T4293-1984，with apurity of 98.68% and ayield of 96.06% .The by-product ammonium sulphate met GradeII quality or higher as per GB/T 535-2020.

Keywords：ammonium fluoride；sodium sulphate；solubility；concentration；sodium fluoride；ammonium sulphate doi： 10，3969/j .issn.1004-8901.2026.01.005

氟化钠是一种重要的化工原料，用途十分广泛，它是许多氟化合物中氟离子的主要来源。（剩余3923字）