Determination of Crystallization Conditions for the Main Phases of Aluminum Hydroxide upon the Carbonization of Aluminate Solutions

摘要

Regions of crystallization of the main phases of aluminum hydroxide (pseudo-boehmite, bayerite, gibbsite) upon the carbonization of aluminate solutions prepared on the basis of synthetic aluminate have been studied depending on their concentration and the process temperature. The pseudo-boehmite is characteristic of solutions with a low concentration of Al_2O_3; with increasing its concentration, bayerite is formed, whereas at enhanced temperatures and Al_2O_3 concentrations, the precipitation of gibbsite is noted.