MICROREGIONAL SPECTRAL-ANALYSIS APPLIED TO INVESTIGATION OF HIGH BASICITY ORE SINTERS

Microregional spectral analysis was applied to determination of Ca con tent and distribution in iron oxides. The results show that phase comp osition of ore sinters varies in the range of 1.7 to 2.1 basicity. The reducibility of the sinter is mostly affected by xalciomagnetitesand calcium ferrites. Properties of doped magnetite phase depended on calc ium content. The effect of magnesium, manganese and aluminium can be n eglected. The observed increase of calcium concentration at calciomagn etite and calciowustite grain boundaries can be attributed to the begi nning of the formation of ferrite phases. Spectral analysis is one of the most important methods of examination of blast furnace sinters.