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Zablotskaya, Yu. V.; Anisonyan, K. G.; Sadykhov, G. B.; Kop’ev, D. Yu; Litvinova, I. S.
Russian metallurgy Metally, 11/2023, Letnik: 2023, Številka: 11Journal Article
The kinetics of atmospheric hydrochloric acid leaching of the iron-containing slime formed during quartz–leucoxene sandstone beneficiation is studied. The calculated activation energies indicate two temperature ranges of the slime leaching: a diffusion kinetic region at 40–70°C ( E a = 35.79–36.56 kJ/mol) and a kinetic region at 70–80°C ( E a = 48.68 kJ/mol). A steplike character of the development of slime during the leaching of iron-containing minerals from it is revealed, which is caused by the consecutive processes of siderite and hematite decomposition and a change in the process rate as the solution is saturated with iron ions.
