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GIORGIO DOMENICO MARIA MICALE

Analysis of particles size distributions in Mg(OH)2 precipitation from highly concentrated MgCl2 solutions

  • Autori: Battaglia G.; Romano S.; Raponi A.; Marchisio D.; Ciofalo M.; Tamburini A.; Cipollina A.; Micale G.
  • Anno di pubblicazione: 2022
  • Tipologia: Articolo in rivista
  • OA Link: http://hdl.handle.net/10447/534547

Abstract

Magnesium is a raw material of great importance, which attracted increasing interest in the last years. A promising route is to recover magnesium in the form of Magnesium Hydroxide via precipitation from highly concentrated Mg2+ resources, e.g. industrial or natural brines and bitterns. Several production methods and characterization procedures have been presented in the literature reporting a broad variety of Mg(OH)2 particle sizes. In the present work, a detailed experimental investigation is aiming to shed light on the characteristics of produced Mg(OH)2 particles and their dependence upon the reacting conditions. To this purpose, two T-shaped mixers were employed to tune and control the degree of homogenization of reactants. Particles were analysed by laser static light scattering with and without an anti-agglomerant treatment based on ultrasounds and addition of a dispersant. Zeta potential measurements were also carried out to further assess Mg(OH)2 suspension stability.