| Abstract Scope |
In Bayer process, hydrodynamic parameters like flow regime, agitation, seed suspension and its dynamics critically affect ATH’s morphology, particle size, surface properties, and reactivity by governing its nucleation and crystal growth behaviour.
Optimizing hydrodynamic parameters enhances ATH properties like bulk density, sphericity, and purity, depending upon end use applications. Correlations between these parameters and ATH’s characteristics are established in lab scale using techniques namely SEM, XRD, Sedigraph, BET, XRF, etc.
This study examines how hydrodynamics using experimental fluid dynamics namely Thermocouples and RTDs in precipitation influence ATH’s properties. Experimental fluid dynamics by repeated analysis and characterization confirm that optimized mixing and flow enhance seed dispersion, crystal growth, and reduce agglomeration. Experimental work suggests increasing impeller speed from 100 to 700 rpm gives us 10 µm to 2 µm particle size. This approach improves ATH quality, process efficiency, sustainability, and enables controlled particle size, porosity, surface area, and purity. |