click here Among the methods of preliminary opening of refractory gold before sorption cyanidation, the technology of bacterial oxidation is widely used today.Although this technology has many advantages, the specialists of most enterprises around the world using this technology are faced with the problem of foaming in bio-oxidation reactors.This article discusses the possibility of using oxidative roasting bushranger awning in the processing of the foam product of the process of bacterial oxidation of flotation concentrate in a separate cycle.