Data characterizing the production of selenium and tellurium from slurry electrolytic copper refining. The description of the areas of application is given, the main manufacturers are listed and the physical and chemical properties of selenium and tellurium and the main compounds, their behavior and distribution by products in pyrometallurgical copper production, as well as market prospects for production are considered. The existing methods of processing medeelectrolyte sludges were reviewed, their advantages and disadvantages were considered. The technological and hardware scheme of slurry processing at Uralelectromed OJSC was considered in detail. Emphasis is placed on the technology of obtaining commercial selenium and tellurium. Issues of labor organization, economy, labor protection. Intended for masters and graduate students of higher educational institutions , students under the programs "Modern technologies for obtaining non-ferrous metals" and "Hydrometallurgical technologies for processing technogenic and secondary resources" , and for professionals, Working in the field of metallurgy of precious metals . Recommended by the UrFU methodological council for students studying in the areas of training 150400 "Metallurgy", 020100 "Chemistry"