The Influence of Electric Current on the Mineral Matrix of Technogenic Anhydrite

The study focuses on the effect of electric current on the structure and properties of the fluorine-anhydrite sulfate-containing matrix modified with carbon fiber as well as assesses the possibility of using carbon fiber as microheating elements. The effect of the modifier on the performance characteristics and physicochemical properties of the mineral matrix was assessed using both traditional methods for determining electrical and thermal characteristics and modern ones, including scanning electron microscopy and differential thermal analysis. The results obtained confirm that the introduction of carbon fiber reduces the specific volume resistance of the product and provides uniform heating, which in turn allows the use of the proposed compositions for heating elements. Due to the achieved thermophysical characteristics, the products can be used as heating elements, provided that the pre-installed electrodes are protected from electrochemical corrosion found during the study using methods of physicochemical analysis.