Method Development for FeO Analysis for Iron Ore and Reduced Products

Several different techniques have been worked upon for the establishment of FeO analyses. In the technique, dissolution is carried out in a nitrogen atmosphere to prevent oxidation by atmospheric oxygen. The Indian Standard Method IS: 1493–1959 describes that the iron ore sample is attacked in a covered platinum crucible, with sulphuric acid and hydrofluoric acid in an atmosphere of carbon dioxide, the solution thus obtained is analysed by titration method. The above analytical method needs a sophisticated apparatus which is designed suitably so that FeO does not react with the oxygen content of the material under study.

It needs a careful study of the XRD phases associated with the sample. A NIST traceable standard is utilised for the purpose. The experiment is carried out by applying different national and international standard methods. The results are compared by applying a statistical technique and established by prevailing ILC practices.