Abstract
In this article, manganese and zinc compounds formation via the reactive crystallization has been summarized. In the operation, the metal sulfate solution was reacted with the sodium carbonate solution on a basis of a double-jet method. Some particle properties, such as crystal size, shape, agglomeration rate and metal ions concentration in the effluent have been examined by coordinating the pH in the initial reaction field, metal ions concentration in the stock solution or the flowing rate of the solution. Obtained manganese carbonates grow larger with increasing the feeding speed and the metal ions concentration in the stock solution. The reason of this was considered that particles growth has been strongly affected by the metal ions supersaturation in the reaction solution. Meanwhile, manganese carbonates recovery rate increased with an increase of the feeding rate and with the decrease of the metal ions concentration. In addition, obtained zinc oxide particles size has continuously changed depending on the initial pH. From the above trials, as the answer to host needs, recovered crystals’ size, crystals surface roughness, metal ions recovery rate and mono-dispersion were found to be controlled to some extent by fixing reaction conditions.
