硅酸盐通报2017，Vol.36Issue(7)：2249-2253,5.
铁离子对磷酸氢二铵结晶过程的影响
Effect of Fe3+ on Crystallization Process of Diammonium Phosphate
孟祥芮 1陈慧萍1
作者信息
- 1. 南昌大学资源环境与化工学院,南昌 330031
- 折叠
摘要
Abstract
First of all,the crystallization metastable zone width of diammonium phosphate(DAP)solution with different contents of iron ions(Fe3+)was determined by dynamic laser method.Secondly,the effect of Fe3+ on the growth rate of DAP was studied by single crystal growth method with inverted microscope.In addition,the effect of Fe3+ on the regularity of DAP particles was investigated by analyzing the particle size distribution.The experimental results show that with the increasing of Fe3+ concentration from 0 to 0.007,metastable zone width increases to 7.68 ℃ from 3.32 ℃,the growth rate of the single crystal in all directions is reduced gradually.When the percentage of iron ion mass concentration X(Fe3+)=0.005,the crystal rate of x direction of diammonium phosphate(Gx)decreases from 60.29 nm·s-1(no adding Fe3+)to 28.35 nm·s-1 in the solution with the degree of supersaturation △C=6 g·(100 g)-1,and the average particle diameter D50 decreases from 267.1 μm(no adding Fe3+)to 137.6 μm and the crystal particle volume fraction of 40-80 mesh is reduced from 88.85％(not adding Fe3+)to 48.75％.The repeatability of the product particle size distribution declines.关键词
铁离子/磷酸氢二铵/介稳区宽度/晶体生长速率Key words
Fe3+/diammonium phosphate/metastable zone width/crystal growth rate分类
交通工程引用本文复制引用
孟祥芮,陈慧萍..铁离子对磷酸氢二铵结晶过程的影响[J].硅酸盐通报,2017,36(7):2249-2253,5.
