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Questions about the impact of the metallurgical industry on the environment are increasingly raised in the modern developing world. There are production of harmful gaseous and solid emissions during refining, associated with the use of chloride, fluoride reagents during recycling of aluminium alloys from secondary raw materials on industry enterprises. The using of chlorides, fluorides compounds should be replaced by more environmentally friendly refining reagents or new approaches to production technologies that enable aluminium recycling facilities to meet real-time economic and environmental requirements. The article deals with the problems of the use of existing chloride and fluoride refining compositions, as well as studies and evaluation of highly contaminated remelting aluminium scrap using promising reagents that increase the environmental friendliness of the process. The information and research, incorporated in this article can be extrapolated on the remelting technology of secondary metallized aluminium raw materials in industrial metallurgical units. ...the aspects described above indicate that in order to improve the working conditions of the smelting shop and increase the environmental efficiency of the process, products producing environmentally unsafe gases and solid-state toxic slags, namely components containing fluorides and chlorides of alkali and alkaline earth metals, should be excluded from refining technologies. Theoretical studies have shown that promising searches for flux compositions using oxide melts (oxides of boron, sodium, silicon, potassium, etc.) that can dissolve significant amounts of Аl203, as well as basalt, can significantly reduce the release of harmful emissions from the processing of aluminium melts, and Carbonates are promising as degassing compounds... A significant proportion of scrap aluminium alloys on the market for recycled aluminium raw materials are metallized waste with paint coatings. Parameters for remelting such scrap with traditional salt fluxes have been described in a number of papers... So far, there are no researches has been carried out on the remelting of such scrap using more environmentally friendly refining reagents. In the course of the experiments, three melts of aluminium scrap in the form of finely ground cans were carried out...

Remelting of highly polluted metallic aluminium scrap with ecological refining reagents