A study on antimony-bearing ferrite

摘要

Ferrite containing heavy metals is precipitated by the wet method of the ferrite process when heavy metal ions come to coexistence. Based on this process, this paper investigated the treatable limit, existing shape after treatment, and properties of sludge formed of antimony compounds that have been restricted by Basel convention as a hazardous heavy metal. We determined that the ferrite process can be applied in initial concentrations up to 75 ppm in Sb~3+ and Sb~5+ solutions. For the initial concentrations of antimony exceeding 75 ppm formation of α- FeOOH (Goethite) Appeared gradually and showed difficulties of treatment by the ferrite process.