Peculiarities of alkaline metals, aluminum, magnesium and cobalt distribution among minerals in iron ore sinter made of oxidized ferruginous quartzites concentrates

Abstract

The aim of the work was to study the peculiarities and mechanism of migration of the components during the sintering of the oxidized ferruginous quartzites concentrates. As a result, it was determined thatthe silicate vitreous bond (B2= 0,9–1,1; FeO = 17–23 %; SiO2= 35–40 %) concentrates alkaline metals in its structure, MgO = 0,3–6,0 %, Al2O3= 0,2–7,2 %. It was formed at the basis of silicate minerals of the concentrate waste rock. Ore phases contain as an isomorphic impurity MgO (up to 3.0 %), Al2O3(up to 1.0 %), CoO (up to 0.43 %). The flux and iron-containing components of the original raw materials were the sources of magnesium and aluminum, the iron ore concentrate, in which cobalt is a part of magnetite as an isomorphic admixture was the source of cobalt. Fundamental differences in the distribution of elements between the ore phases in the agglomeration of oxidized ferruginous quartzites and non-oxidized (magnetite) were absent, due to the comparable composition of the waste rock and the mechanism of formation and crystallization of the melt.