The Question of Removal of Sulphur from Magnetite Concentrates Deposits of KMA

Author(s):  S.R. Gzogyan, Belgorod State National Research University, Belgorod, Russia,

Issue:  Volume 42, №1

Rubric:  Earth sciences

Annotation:  The paper considers the question of thermal influence on the natural monomineral fractions of minerals of magnetite, pyrite and pyrrhotite included in the ferruginous quartzite deposits of KMA with a view to the possible removal of sulfur in the production of fired pellets. Conducted studies have shown that in the temperature range 650–700°C, the pyrrhotite completely converted into hematite. At a temperature of 550°C the phase transformation of pyrite-hematite have passed, and at a temperature of 600°C, the process of phase transformation of pyrite to hematite is being completed. Once confirmed, made the author the assumption that the phase transformation of pyrite – hematite goes through an intermediate phase of magnetite, which is associated with the processes of replacement of pyrite by magnetite and pyrrhotite in the ferruginous quartzites. Thus, it is shown that in the field of thermal effects on Kuskovsky magnetite concentrate will be obtained metallizovannyh product consisting mainly of iron oxides. It is proposed resulting from firing pellets of gaseous sulfur compounds to be disposed of with sulfuric acid SNOX technology that will allow involving in the processing of refractory sulphur ferruginous quartzites.

Keywords:  magnetite concentrate, pyrite, pyrrhotite, magnetite, the ratio of Fe+2/Fecom, thermal effect, thermal, and mössbauer spectra.

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