Production of Flotation Agents for Coal Cleaning by the Oxidative Modification of Waste Motor Oils

Abstract

Data on the effects of different oxidative modification methods on the composition and flotation properties of spent mineral motor oils are reported. It was found that the preliminary ozonization of waste oils, in contrast to their thermal oxidation and treatment with hydrogen peroxide, increased the efficiency of the flotation of coking coal. The flotation properties of ozonized waste oils are improved due to a decrease in the viscosity and the appearance of heteropolar compounds in their composition, as a result of which the reagent acquires the complex properties of a collector and a foaming agent.