Scientific basis of processing aluminum-containing waste
- Ph.D., Dr.Sci. professor Saint-Petersburg Mining University
Abstract
Changing raw material base for the production of aluminium and the emergence of a huge number of secondary glinozemservice waste (foundry slag, sludge, spent catalysts, mineral part of coals and other are formed in various industrial enterprises) demanded the creation of a scientific and theoretical basis for their processing. In this work, as aluminium-containing component used aluminum alloys (GOST 4784-97), aluminum containing component is obtained as a chip on Mashinostroitel-governmental enterprises. Aluminum waste is a whole range of metal alloys of aluminium with cumtion of the elements: magnesium, copper, silica, zinc, iron. Analysis of waste aluminum Al – Zn – Cu – Si – Fe shows that, depending on the content of a particular metal and the dissolution process of aluminum alloy should be viewed as the result of chemical interaction of the metal with an alkaline solution. It is necessary to consider the behavior of the main components of the alloy in alkaline solution, with respect to the system Na2O – Al2O3 – SiO2 – ®CO2 – H2O. Since the final contents of the components in an alkaline solution is determined by its soluble Pro-vide experimental evaluation of the possibility of dissolution of iron and other elements of aluminum alloy-VA in alkaline solution of different concentrations at temperature 80-90 °C., that show that for pH alkaltion of solutions containing 100-300 g/l Na2Oкy the solubility of ferric hydroxide is (0,003-0.05) g/l Fe2O3.
References
- Alekseev A.I. Kompleksnaya pererabotka apatit-nefelinovykh rud na osnove sozdaniya zamknutykh tekhnologicheskikh skhem (Complex processing of Apatite-nepheline ores based on the creation of closed technological schemes). Zapiski Gornogo instituta. Vol.215, p.75-83.
- Alekseev A.I., Nikolaeva N.V., Kononchuk O.O. Peredovye khimicheskie tekhnologii pererabotki alyuminievykh otkhodov (Advanced chemical processing technology, aluminumevye of waste). Vysokie tekhnologii: potentsial i perspektivy: Sb. dokladov kruglogo stola. St. Petersburg: Izd-vo SPbGEU, 2014, p.20-23.
- Abramov V.Ya., Alekseev A.I., Badal'yants Kh.A. Kompleksnaya pererabotka nefelin-apatitovogo syr'ya (Complex processing of nepheline-Apatite raw materials). Moscow: Metallurgiya, 1990, p.392.
- Alekseev A.I. Gidroalyuminaty i gidrogranaty kal'tsiya (sintez, svoistva, primenenie) (Hydroaluminate and hydrogenate calcium (synthesis, properties, application)). Leningrad: Izd-vo LGU, 1985, p.184.
- Brichkin V.N., Kraslavskii A. Yavlenie izotermicheskogo perekhoda metastabil'nykh alyuminatnykh rastvorov v labil'nuyu oblast' i perspektivy ego promyshlennogo ispol'zovaniya (Phenomenon of isothermal transition of metastable aluminate races tworow in labile region and the prospects for its industrial use). Zapiski Gornogo instituta. 2016. Vol.217, p.80-87.
- Belov N.A., Titov V.I. Vliyanie kal'tsiya na strukturu i uprochnenie alyuminievykh splavov, legirovannykh tsinkom i magniem (The influence of calcium on the structure and hardening of aluminum alloys doped with zinc and magnesium). Tsvetnye metally. 2008. N 12, p.64-67.
- Zolotorevskii S.V., Belov N.A. Metallovedenie liteinykh alyuminievykh cplavov (Physical Metallurgy of cast aluminum alloys). MiSiS. Moscow, 2005, p.376.
- Kulinich O.V. Fiziko-khimicheskie osnovy gidrokhimicheskoi pererabotki otkhodov, soderzhashchikh alyuminii (Physicochemical fundamentals of hydro-chemical processing of waste containing aluminumtions). Avtoref. dis… kand. tekhn. nauk. Sankt-Peterburgskii tekhnologicheskii institut. St. Petersburg, 1998, р.21.
- Luts A.R., Suslina A.A. Alyuminii i ego splavy (Aluminium and its alloys).Samar. gos. tekhn. un-t. Samara, 2013, p.81.
- Sizyakov V.M. Khimiko-tekhnologicheskie zakonomernosti protsessov spekaniya shchelochnykh alyumosilikatov i gidrokhimicheskoi pererabotki spekov (Chemical and technological regularities of the processes of sintering alkaline Alu-Basilicata and hydrochemical processing of cakes). Zapiski Gornogo instituta. 2016. Vol.217, p.102-112.
- Sizyakov V.M. Problemy razvitiya proizvodstva glinozema v Rossii (Problems of development of alumina production in Russia). I Mezhdunarodnyi kongress «Tsvetnye metally Sibiri-2009»: Sb. dokladov. Krasnoyarsk, 2009, p.120-134.
- Sizyakov V.M. Modernizatsiya tekhnologii kompleksnoi pererabotki nefelinovykh kontsentratov na Pikalevskom glinozemom kombinate (Modernization of technology of complex processing of nepheline concentrates on Peak-Levski alumina plant). II Mezhdunarodnyi kongress «Tsvetnye metally-2010»: Sb. dokladov. Krasnoyarsk, 2010, p.219-230.
- Sizyakov V.M., Bazhin V.Yu. Tekhnologicheskie i metodologicheskie osnovy polucheniya alyuminiya na moshchnykh elektrolizerakh (Technological and methodological basis for the production of aluminium and on the powerful electrolysis-RAH). Sankt-Peterburgskii gornyi universitet. 2011, p.130.
- Fedorov V. Vtorichnyi alyuminii – vazhnoe syr'e XXI veka! (Recycled aluminium an important raw material of the XXI century!). Vtorichnye resursy. 2001. N 4-5, p.58-59.
- Eksperimental'nye dannye po rastvorimosti mnogokomponentnykh vodno-solevykh sistemchnik (Experimental data on the solubility of multicomponent water-salt systems). In 2 vols., 4 books. St. Petersburg: Khimizdat, 2003. Vol.1, book 2, p.609-1152.