无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2011, Vol. 43 ›› Issue (4): 21-.

• 论文 • 上一篇    下一篇

氨-醇盐析法分离钾钠制备硫酸钾

杨慧君,王英滨,马鸿文,王丽   

  1. 中国地质大学材料科学与工程学院,北京 100083
  • 发布日期:2011-04-19

Preparation of potassium sulphate by separation of potassium and sodium salt with ammonia-alcohol salting out method

Yang Huijun,Wang Yingbin,Ma Hongwen,Wang Li   

  1. School of Materials Science and Technology,China University of Geosciences,Beijing 100083,China
  • Online:2011-04-19

摘要: 以陕西省洛南县富钾岩石烧结物的水浸滤液为研究对象,在通入二氧化碳条件下加入氨水和仲丁醇,产生盐析作用,分离碳酸氢钠和碳酸氢钾,以制备农用硫酸钾。对氨-醇盐析法分离钾钠混合溶液的工艺进行了研究。实验结果表明,最佳工艺条件下,分离后得到的碳酸氢钾质量分数为95.29%,将其溶解并加入硫酸制得硫酸钾产品,产品达到了国家农业用硫酸钾优等品标准。

关键词: 氨水, 有机醇, 碳酸氢钠, 碳酸氢钾, 硫酸钾

Abstract: Take the filtered leaching-liquid of the sinter of the potassium-rich rocks from Luonan,Shaanxi as the object of the study.By inlet CO2 gas,ammonia and sec-butanol were added into the liquid,then NaHCO3 and KHCO3 were separated under the action of salting out to produce the agricultural potassium sulphate.Technology of separating Na-K mixed solution by ammonia-alcohol salting out method was studied.Experiment results indicated that the mass fraction of separated KHCO3 was up to 95.29% under the optimum process conditions.Sulfuric acid was added to the solution of KHCO3 to prepare potassium sulphate.Prepared K2SO4 reached the first-rate of National Agriculture Potassium Sulphate Standard.

Key words: ammonia, alcohol, sodium bicarbonate, potassium bicarbonate, potassium sulphate

中图分类号: