Abstract
In some hydrometallurgical operations, the removal of iron from process liquors can be critical, with the method of choice commonly being crystallization (precipitation). It has been recently discovered that if the removal of iron occurs at pH 3, ferrihydrite, a complex and disordered compound, will generally be precipitated. A laboratory scale, computer controlled, continuous crystallizer was constructed to investigate the removal of iron from low pH solutions (precipitation). The significance of ferrihydrite precipitation and the effect of pH and silica concentration on the properties of the precipitate were investigated. Considerable insight has been gained concerning the crystallization and growth mechanisms under these conditions, including the unusual limit of ferrihydrite crystal growth. The use of in situ focussed beam reflectance measurement (FBRM) analysis has allowed the particle size differences experienced at low pH in ferrihydrite precipitation to be studied. The improved understanding of the crystallization of iron from hydrometallurgical process liquors has resulted in a methodology for more effective removal of iron.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
