20.500.12556/DKUM-27978 Ekonomski učinki predelave stranskih produktov recikliranja odpadnega aluminija in aluminijeve žlindre v tržno zanimive in okolju neškodljive izdelke The economics of converting aluminium wastes into valuable and environmentally friendly products 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". 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. aluminijeve zlitine recikliranje odpadni aluminij aluminijeva žlindra pretaljevanje v rotacijski peči stranski produkti slani kolač nekovinski ostanek aluminium alloys recycling aluminium scrap aluminium dross remelting in rotary furnace aluminium wastes salt cake residue oxides true false true Inštitut za kovinske materiale in tehnologije Ljubljana Slovenski jezik Angleški jezik Znanstveno delo 2012-06-01 13:25:12 2012-06-01 13:25:12 2022-04-15 13:46:26 2021-04-11 03:28:53 2001 0 0 str. 277-282 št. 5 Letn. 35 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1580-2949 669.71.004.8 106193664 6667798 1580-2949 URN:SI:UM:DK:AJ8FQXP0 Materiali_in_tehnologije_2001_Kevorkijan_Ekonomski_ucinki_predelave_stranskih_produktov_recikliranja_odpadnega_aluminija_in_aluminijeve.pdf Materiali_in_tehnologije_2001_Kevorkijan_Ekonomski_ucinki_predelave_stranskih_produktov_recikliranja_odpadnega_aluminija_in_aluminijeve.pdf 1 CBD6F58A6D027657263D71B9C4F748F2 0a6bc2790c3490f5dae3050ae21ccd4eb49b4d84d4a6193e72abb89d72a2c302 fd3e505f-7c0d-11eb-bb7a-00155d0001ca 20.500.12556/dkum/872c0232-b348-4ede-989b-ea13712db07f https://dk.um.si/Dokument.php?lang=slv&id=109833 http://mit.imt.si/Revija/izvodi/mit015/kevorkijan.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=109832 Fakulteta za strojništvo 0 0 0