Study of the Sulphuric Acid Decomposition of Fluorine-Containing Wastes of the Aluminium Production for the Purpose of the Isolation of Hydrogen Fluoride
I. V. PETLINВ В and A. N. DYACHENKO
Tomsk Polytechnic University,
Prospekt Lenina 30, Tomsk 634050 (Russia)
E-mail: petliniv@tpu.ru
Keywords: hydrogen fluoride, aluminium industry, fluorine-containing wastes, sulphatisation, complex processing, oxidative roasting, thermodynamic parameters, kinetic characteristics
Pages: 315–321
Abstract
Processing method of fluorine-containing wastes of the aluminium industry aimed at the preparation of hydrogen fluoride was considered. Thermodynamic parameters of the sulphatisation process of fluorine-containing wastes were calculated. The necessity of the stage of the preliminary oxidative roasting of wastes for the removal of the carbon constituent that hinders the interaction of sulphuric acid with fluorine-containing particles was established. Kinetic characteristics and optimal conditions of the sulphatisation process of fluorine-containing wastes in the static mode were determined.
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