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Title:Ekonomski učinki predelave stranskih produktov recikliranja odpadnega aluminija in aluminijeve žlindre v tržno zanimive in okolju neškodljive izdelke
Authors:ID Kevorkijan, Varužan (Author)
ID Inštitut za kovinske materiale in tehnologije (Copyright holder)
Files:.pdf Materiali_in_tehnologije_2001_Kevorkijan_Ekonomski_ucinki_predelave_stranskih_produktov_recikliranja_odpadnega_aluminija_in_aluminijeve.pdf (106,67 KB)
MD5: CBD6F58A6D027657263D71B9C4F748F2
PID: 20.500.12556/dkum/872c0232-b348-4ede-989b-ea13712db07f
 
URL http://mit.imt.si/Revija/izvodi/mit015/kevorkijan.pdf
 
Language:Slovenian
Work type:Scientific work
Typology:1.04 - Professional Article
Organization:FS - Faculty of Mechanical Engineering
Abstract:V delu obravnavamo postopke recikliranja aluminijevih zlitin iz odpadnega aluminija in aluminijeve žlindre s pretaljevanjem v rotacijski peči konvertorskega tipa, ogrevani z gorilnikom na zemeljski plin in kisik. Opisani so trije postopki pretaljevanja odpadnega materiala: klasični, "mokri" postopek z dodatkom soli v razmerju 1:1 glede na vsebnost nealuminijskih sestavin v odpadnem materialu, "suhi" postopek z dodatkom soli 0,6:1 glede na nealuminijske sestavine v odpadnem materialu in postopek pretaljevanja brez dodatka soli, ki se večinoma uporablja le za pretaljevanje aluminijeve žlindre. Osnovni problem, ki se pojavlja pri vseh treh postopkih recikliranja aluminijevih zlitin iz odpadnega aluminija in aluminijeve žlindre je predelava stranskih produktov pretaljevanja odpadnega materiala v koristne in okolju neškodljive izdelke oz. surovine za nadaljnjo uporabo. Pri "mokrem" in "suhem" postopku gre za predelavo t.i. "slanega kolača", pripostopku pretaljevanja brez dodatka solipa za predelavo "nekovinskega ostanka". Opisani so in ekonomsko ovrednoteni različni postopki recikliranja soli iz "slanega kolača" in predstavljeni možni postopki nadaljnje predelave "nekovinskega ostanka".
Keywords:aluminijeve zlitine, recikliranje, odpadni aluminij, aluminijeva žlindra, pretaljevanje v rotacijski peči, stranski produkti, slani kolač, nekovinski ostanek
Publication status:Published
Publication version:Version of Record
Publisher:Inštitut za kovinske materiale in tehnologije Ljubljana
Year of publishing:2001
Number of pages:str. 277-282
Numbering:Letn. 35, št. 5
PID:20.500.12556/DKUM-27978 New window
ISSN:1580-2949
UDC:669.71.004.8
ISSN on article:1580-2949
COBISS.SI-ID:6667798 New window
NUK URN:URN:SI:UM:DK:AJ8FQXP0
Publication date in DKUM:01.06.2012
Views:2720
Downloads:177
Metadata:XML DC-XML DC-RDF
Categories:Misc.
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Record is a part of a journal

Title:Materiali in tehnologije
Shortened title:Mater. tehnol.
Publisher:Inštitut za kovinske materiale in tehnologije
ISSN:1580-2949
COBISS.SI-ID:106193664 New window

Secondary language

Language:English
Title:The economics of converting aluminium wastes into valuable and environmentally friendly products
Abstract:The advanced aluminum-alloy recycling procedures, based on remelting of aluminum scrap and aluminum dross in a tilted rotary barrel furnace equipped with a multi-purpose oxy-fuel-based combustion system have been evaluated. These are: the "wet" process, in which typically 1 kg of salt flux is added to 1 kg of non-aluminum constituents of scrap and dross, the "dry" (low-salt) process, which uses 40% less salt flux compared to the "wet" process, and the "salt-free process", which is promising for the recovery of aluminum from aluminum dross. The common problem in all of above-listed procedures is an appropriate divertion of the recycling wastes produced by aluminum recycling in a variety of commercially valuable and environmentally friendly products. The "wet" and "dry" processes generate a so-called "salt cake", which consists of aluminum metal, spent salt flux and residue oxides while the"salt-free process" produces only residue oxides. Different procedures for salt recovery from salt the cake were described and the economics associated with these scenarios were evaluated. Moreover, various possiblities for the conversion of residue oxides into valuable products were listed and the economics associated with additional processing of residue oxides were also evaluated.
Keywords:aluminium alloys, recycling, aluminium scrap, aluminium dross, remelting in rotary furnace, aluminium wastes, salt cake, residue oxides


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