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METAL PROCESSING
ArticleName Development of aluminium scrap melting technology
ArticleAuthor Gel V. I., Rudakov D. N.
ArticleAuthorData

“MetalTech-Engineering” LLC, Nizhny Novgorod:

V. I. Gel, Chief Executive Officer, e-mail: gel942@yandex.ru

 

“Metalimport” LLC, Korolev, Russia:

D. N. Rudakov, Deputy Chief Executive Officer on Production

Abstract

The article shares the problems of development of technology of melting of aluminium scrap and wastes on the secondary metallurgy enterprises of the Soviet Union and modern Russia. An overview of fuel melting furnaces, applied on these enterprises is given together with modern tendencies of development of secondary aluminium metallurgy. There is given a brief review of technology of melting and refining of secondary aluminium alloys. There is given a detail description of technology of melting of aluminium scrap and wastes in rotor furnace with inclined axis “UNIVERSAL-180”. The results of melting of various aluminium-containing wastes are given together with the comparative characteristics of Russian rotary furnaces with inclined axis and their import analogues. There is described the operation of the furnaces with external metal receiver and circulation of melt with usage of mechanical mixing devices and devices with a MHD-pumps. Usage of this type of furnaces makes it possible to reach high extraction of metal in the process of melting of swarf and fire scrap. However, this usage requires a careful preparation of this metal for melting: crushing, roasting, separation. The inclined rotary furnaces and rotary furnace with inclined axis do not have such disadvantages – they do not require any special preparation of the scrap and waste for melting. Melting of various types of scrap (including low-quality scrap in these rotor furnaces to reach high technological values. This article also shows the disadvantages of rotary furnace, increased removal of dust, application of special burners, high qualification of the personnel.

keywords Fuel furnaces, circulation of the melt, the quality of alloys, melting of aluminium scrap, preparation of scrap, rotary kiln, burners, salt slags, technological indicators
References

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3. Gel V. I. Tsvetnye Metally – Non-ferrous metals. 1990. No. 4. pp. 83–84
4. Altman M. B., Glotov E. B., Ryabinina R. M., Smirnov T. I. Rafi nirovanie alyuminievykh splavov v vakuume (Vacuum refining of alumi nium alloys). Mocow : Metallurgiya, 1970.
5. Gel V. I. Issledovanie dinamiki prinuditelnoy tsirkulyatsii rasplava v pechakh i ustroystvakh s “vynosnym metallopriemni kom” (Research of dynamics of the forced circulation of melt in the furnaces and facilities with “detacable well”). Trudy Instituta Titana (Proceedings of Titanium Institute). Zaporozhye, 1990.
6. Gel V. I. O povyshenii effektivnosti proizvodstva vtorichnykh alyuminievykh splavov (About the efficiency increasing of the production of secondary aluminium alloys). Vtorichnye resursy – Secondary recources. 2002. No. 6.
7. Schmitz Сh., Domagala J., Haag P. Handbook aluminium recycling. Essen : Vulkan-Verlag Gmbh, 2006.
8. Gel V. I. Pererabotka otkhodov pervogo i vtorogo klassov opasnosti (Processing of wastes of first and second hazard classes). Materialy konferentsii WASMA (Materials of WASMA Conference). Moscow, 2008.
9. Gel V. I. Pererabotka alyuminievykh shlakov v rotornoy pechi s naklonyaemoy osyu (Processing of aluminium slags in rotor furnace with inclinable axle). Materialy mezhdunarodnoy konferentsii “ALUSIL”, Retsikling alyuminiya (Materials of International Conference “ALUSIL”, Aluminium Recycling). Saint Petersburg, 2008.
10. Gel V. I., Nikitin P. N. Plavka v rotornykh pechakh s naklonyaemoy osyu (Fusion in rotor furnaces with inclinable axle). Materialy mezhdunarodnoy konferentsii “ALUSIL”, Lite alyuminiya (Materials of International Conference “ALUSIL”, Aluminium Casting). Saint Petersburg, 2012.

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