Oxidation of organic impurities in production aluminate solutions under the effect of the thermal plasma jet

Abstract

A new approach to the removal of organic impurities from the technological aluminate solution of alumina production via processing the solution by a high-speed oxidizing thermal-plasma jet flowing into the solution bulk is considered. It is experimentally shown that, during the plasma treatment of aqueous solutions of phenol and humic acids, a degree of the transformation of starting organic compounds exceeding 80% is achieved. In experiments on the plasma treatment of the technological solution, a decrease in the chemical consumption of oxygen by more than 60% is achieved, which indicates a considerable decrease in the concentration of organic impurities.