Molecules, Vol. 28, Pages 7923: Effects of Different Flotation Agents on the Nucleation and Growth of Potassium Chloride

Molecules, Vol. 28, Pages 7923: Effects of Different Flotation Agents on the Nucleation and Growth of Potassium Chloride Molecules doi: 10.3390/molecules28237923 Authors: Guangle Wang Xiao Bian Zeren Shang Weibing Dong Yi Zhang Songgu Wu The flotation agent is an important collector in the production of potassium chloride and is brought into the crystallization stage with the reflux of the mother liquor. Octadecylamine Hydrochloride (ODA), 1-Dodecylamine Hydrochloride (DAH) and Sodium 1-dodecanesulfonate (SDS) were selected to study their effect on the nucleation of potassium chloride. Focused Beam Reflectance Measurement was used to collect the nucleation-induced periods of KCl in the presence of flotation agents at different supersaturations. Then, empirical equations, classical nucleation theory and growth mechanism equations were employed for data analysis. It was found that the presence of flotation agents increased the nucleation sequence m, and m(ODA) > m(SDS) > m(DAH) > m(H2O). In addition, the interfacial energy data obtained using classical nucleation theory suggest that the flotation agents used in our paper promoted the homogeneous nucleation of KCl (reduced from 5.3934 mJ·m−2 to 5.1434 mJ·m−2) and inhibited the heterogeneous nucleation of KCl (increased from 2.8054 mJ·m−2 to 3.6004 mJ·m−2). This inv...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research