Environment·Health·Safety

Study on preparation of ammonium dihydrogen phosphate from phosphoric acid waste solution of chemical polishing of aluminum and aluminum alloy

  • Yuzhong Tang ,
  • Shuaifei Zheng ,
  • Qingxi Zhang ,
  • Zhiqiang Xue ,
  • Jishan Qin
Expand
  • Shenzhen Shentou Environmental Technology Co.,Ltd.,Shenzhen 518049,China

Received date: 2020-08-16

  Online published: 2021-05-12

Abstract

A methodology for producing industrial grade ammonium dihydrogen phosphate(MAP) through effective recycle of phosphorus from phosphoric acid waste solution of chemical polishing of aluminum and aluminum alloy was proposed.The ex-perimental results showed that when the concentration of original waste solution was diluted to 95 g/L,the reaction tempera-ture was 80 ℃,the pH of the end point of neutralization and impurity removal was about 4,the impurity removal reaction time was 1 h,the pH of the filter liquid was adjusted to 7~8 by ammonia,and then evaporated and concentrated,the concentrated liquid was added with high purity phosphoric acid waste liquid to adjust the pH to 4~5,the MAP products were cooled,crys-tallized and dried at 85 ℃.Through the analysis of main content and XRD,the result showed that all indexes met the first-grade product standard of HG/T 4133—2010,Industrial Ammonium Dihydrogen Phosphate.

Cite this article

Yuzhong Tang , Shuaifei Zheng , Qingxi Zhang , Zhiqiang Xue , Jishan Qin . Study on preparation of ammonium dihydrogen phosphate from phosphoric acid waste solution of chemical polishing of aluminum and aluminum alloy[J]. Inorganic Chemicals Industry, 2021 , 53(5) : 88 -92 . DOI: 10.11962/1006-4990.2020-0350

References

[1] 田文航, 张才华, 陈元辉. 溶剂萃取法湿法磷酸净化技术应用现状[J]. 磷肥与复肥, 2019,34(3):24-26.
[2] 冯卫文. 一种回收废铝蚀刻液中磷酸的方法:中国,103979509[P].2014-08-13.
[3] 陈志传, 宋少华, 毛谙章, 等. 化学抛光废磷酸的综合利用方法:中国,101456547A[P].2009-06-17.
[4] Driver J, Lijmbach D, Steen I. Why recover phosphorus for recycling and how[J]. Environ. Technology, 1999,20(7):651-662.
[5] 郑润, 解田, 刘飞, 等. 磷酸二氢铵应用研究进展[J]. 无机盐工业, 2014,46(4):1-3.
[6] 陈铭, 娄伦武, 卓知杰, 等. 湿法磷酸净化生产工业级磷酸一铵的工艺技术现状[J]. 化肥工业, 2019,46(1):5-7,38.
[7] 芝田隼次, 山本秀树, 井上兴一郎, 等. 从醋酸-硝酸-磷酸系混酸废液中分离回收磷酸的方法:中国,1781842B[P].2011-01-12.
[8] 李姗婷, 张艳华, 徐文彬, 等. 结晶法回收铝蚀刻废液中磷酸工艺研究[J]. 广东化工, 2016,43(13):186-187,168.
[9] 吴文彪, 张艳华, 徐文彬, 等. 利用TFT-LCD磷酸蚀刻废液制备饲料级磷酸氢钙[J]. 广东化工, 2017(18):66-68,23.
[10] 陈艳锋. 电解-萃取组合工艺处理废磷酸蚀刻液[J]. 广东化工, 2019,46(14):137-138,150.
[11] 周兆安, 唐瑜钟, 徐丽阳. 化学蚀刻废磷酸制备饲料级磷酸脲的研究[J]. 无机盐工业, 2018,50(10):66-69.
[12] 贡长生. 现代磷化工技术和应用[M]. 北京: 化学工业出版社, 2013.
Outlines

/