Improvement of the procedure for determining alumina in the electrolyte

A procedure for determining the weight fraction of alumina in electrolytes containing additives of magnesium fluoride, which increases the reliability of chemical analytical data, based on which the electrolytic production of aluminum is monitored, is developed. A physicochemical model allowing one to determine the content and forms of elements in the solution, solid phases, and gaseous products forming during the interaction of the electrolyte with the aqueous solution of aluminum chloride is presented. The example of using the physicochemical model as a method for matching the chemical analytical data is presented, and the accuracy of determining the alumina weight fraction in the electrolyte by the leaching method is verified.