| Abstract Scope |
An utmost important step of Bayer process is the crystallization of aluminium hydroxide (Al(OH)3) from caustic solution. Perform this step only by cooling of the solution, makes the process unworkable and so it is added crystallized particles, which act as sites for the crystal formation.
Mathematical models are particularly useful in this context because they provide the particle evolution of the crystals as a function of time, together from the mass balances and reaction kinetics of crystallization.
Therefore, this work presents the crystallization PSD simulation of Companhia Brasileira de Alumínio (CBA) alumina refinery, developed in order to study the seeds feed effects, assisting the optimization and maximization of the process yield and alumina quality. |