magistrsko delo
Klara Merše (Author), Marjan Marinšek (Mentor), Igor Plazl (Thesis defence commission member), Boštjan Genorio (Thesis defence commission member)

Abstract

Pri proizvodnji aluminija nastaja v velikih količinah toksičen odpadek rdeče blato, ki še vedno vsebuje mnoge iskane kovine, kot je skandij. Razvijanje postopka pridobivanja skandija iz alternativnega vira je pomembno, saj gre za zelo perspektiven material za razvoj novih tehnologij, ki pa ga trenutno omejuje visoka cena. Poleg tega ima tudi geopolitični pomen za doseganje neodvisnosti Evropske unije pri oskrbi s kritičnimi surovinami. V magistrskem delu je bila s postopkom tekočinske ekstrakcije dosežena selektivna ekstrakcija skandija iz lužnice rdečega blata v organsko fazo pri 20 mM koncentraciji ekstraktanta DEHPA. Pogoji ekstrakcije so bili prilagojeni za vzorec rdečega blata iz Podgorice, Črna gora. Poleg osnovnih šaržnih poizkusov je bila ekstrakcija izvedena tudi na kontinuirnem nivoju v mešalniku-usedalniku, s čimer se je raziskava približala industrijskemu nivoju reciklaže rdečega blata z namenom pridobivanja skandija.

Keywords

rdeče blato;predelava rdečega blata;tekočinska ekstrakcija;magistrska dela;

Data

Language: Slovenian
Year of publishing:
Typology: 2.09 - Master's Thesis
Organization: UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher: [K. Ogorevc]
UDC: 66.061:669.793(043.2)
COBISS: 127856131 Link will open in a new window
Views: 52
Downloads: 11
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Other data

Secondary language: English
Secondary title: Recovery of scandium from red mud by leaching extraction
Secondary abstract: Aluminum production produces large amounts of toxic red mud waste, which contains many valuable metals such as scandium. Developing the process of scandium extraction from an alternative source is important, as it is a very promising material for the development of new technologies, which is currently limited by its high price. In addition, it also has geopolitical significance for achieving the independence of the European Union in the supply of critical raw materials. In the Master's work, the selective extraction of scandium from red mud leach solution into the organic phase was achieved using a liquid extraction process at a 20 mM concentration of the DEHPA extractant. The extraction conditions were adapted for a sample of red mud from Podgorica, Montenegro. In addition to the basic batch experiments, the extraction was also carried out on a continuous level in a mixer-settler, which brought the research closer to the industrial level of red mud recycling for the purpose of scandium recovery.
Secondary keywords: red mud;solvent extraction;scandium;Ekstrakcija (kemija);Skandij;Univerzitetna in visokošolska dela;
Type (COBISS): Master's thesis/paper
Study programme: 1000376
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, smer Kemijsko inženirstvo
Pages: 52 str.
ID: 16391448