Home – Home – Jornals – Chemistry for Sustainable Development 2018 number 4

Oil refining products are traditionally used as reagents for floatation coal cleaning. To enhance floatation efficiency, oxidative modification of nonpolar hydrocarbon reagents is used. In the present work ozone is considered as the oxidative reagent, and kerosene fraction is the nonpolar agent. The effect of ozonation on the component composition and technological characteristics of kerosene was studied. It is shown that ozonolysis of kerosene results in a decrease in the relative content of aliphatic СН₂-bonds in the -position to the aromatic core, and the fraction of methyl, methoxyl, alkyl ether and alicyclic structures increases; the fraction of polycyclic arenes decreases, while the fraction of monocyclic arenes increases; the content of aliphatic carboxylic acids, linear and cyclic ethers and esters, lactones and anhydrides increases. Due to an increase in the fraction of heteropolar oxygenated compounds in ozonated kerosene, it may serve as the basis for obtaining floatation reagent with the integrated properties of foam-former and collector, which promotes an increase in the efficiency of floatation of coal sludge.