Reverse flotation separation of hematite from quartz ...
Aug 01, 2019· The purities of hematite, quartz, and magnetite were 97.3%, 99.4%, and 93.8%, respectively. Elemental compositions of minerals are shown in Table 1.Total iron and ferrous iron contents were determined with the standard titrimetric method using potassium dichromate as titrant after reduction of the iron (III) by tin (II) chloride and/or titanium (III) chloride (ISO 2597-1) (Hu et al., 2014 ...