Oslobađanje elektrodnog materijala iz litij-ionskih baterija atricijskim čišćenjem

master's thesis

• Title: Oslobađanje elektrodnog materijala iz litij-ionskih baterija atricijskim čišćenjem : diplomski rad
• Title (english): Recovery of electrode material from lithium-ion batteries by attrition scrubbing : master's thesis
• Author: David Tenjer
• Mentor: Gordan Bedeković (mentor)
• Committee member: Gordan Bedeković (predsjednik povjerenstva)
• Committee member: Ivan Sobota (član povjerenstva)
• Committee member: Dalibor Kuhinek (član povjerenstva)
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Mining and Geotechnical Engineering); Zagreb
• Defense date and country: 2020-09-11, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mining, Petroleum and Geology Engineering; Mining

Abstract

Električni i elektronički (EE) otpad predstavlja sve veći problem za sustav gospodarenja otpadom. Recikliranje EE otpada se nameće kao rješenje tih problema. Recikliranjem, osim što se smanjuju količine otpada i štetnost za okoliš, dobivaju se i vrijedne sekundarne sirovine. Litij-ionske baterije čine značajan udio u ukupnim količinama EE otpada s tendencijom povećanja zbog sve raširenije primjene, ponajprije u pametnim telefonima, prijenosnim računalima te električnim i hibridnim vozilima. Postojeće tehnike i tehnologije recikliranja Li-ionskih baterija ostavljaju prostora za napredak, ponajprije u pogledu utjecaja na okoliš. Stoga je u ovome radu ispitana učinkovitost oslobađanja elektrodnog materijala (litij-kobalt oksida i grafita) iz litij-ionskih baterija, kao jednog od segmenata reciklažnog procesa, primjenom atricijskog čišćenja pri različitim vrijednostima radnih parametara. Usitnjeni materijal je preduvjet za primjenu atricijskog čišćenja. Stoga je ispitana i učinkovitost oslobađanja elektrodnog materijala uslijed sitnjenja u reznom mlinu te je određena ukupna učinkovitost reciklažnog procesa koji uključuje oba postupka. Rezultati ispitivanja ukazuju da atricijsko čišćenje elektroda Li-ionskih baterija, kao postupak oslobađanja elektrodnog materijala, ima značajno manji štetan utjecaj na okoliš i manje pogonske troškove u odnosu na konkurentske postupke uz relativno visoku učinkovitost. Obzirom na takve rezultate postoji potencijal za primjenu atricijskog čišćenja u procesima recikliranja litij-ionskih baterija.

Abstract (english)

Electrical and electronic (EE) waste is a growing problem for the waste management. Recycling of EE waste is a solution for these problems. In addition to reduce waste and environmental damage, recycling also provides valuable secondary raw materials. Lithium-ion batteries make a significant share of total EE waste with a tendency to increase. Existing techniques and technologies for recycling Li-ion batteries leave room for improvement, primarily in terms of environmental impact. Therefore, the separation efficiency of electrode material (lithium-cobalt oxide and graphite) from lithium-ion batteries is determineted in this paper, as one of the segments of the recycling process, by using attrition scrubbing. Shredded material is a prerequisite for the application of attrition scrubbing. Therefore, the separation efficiency of electrode material due to grinding in a mill to the class of -8 mm was examined and the overall efficiency of the recycling process, which involves both procedures, was determined. Test results indicate that attrition scrubbing of the electrodes of Li-ion batteries, as the process of the separation of electrode material from metal foils, has significantly lower negative impact on the environment and lower operating costs compared to competing processes with relatively high efficiency. Given such results, there is potential for the application of attrition scrubbing in lithium-ion battery recycling processes.

• Keywords: oslobađanje; raščin; elektrodni materijal; litij-kobalt oksid; grafit; litij-ionske baterije; atricijsko čišćenje; recikliranje
• Keywords (english): separation; carbon; graphite; lithium-cobalt oxide; Li-ion battery; attrition scrubbing; recycling
• Language: croatian
• URN:NBN: urn:nbn:hr:169:111110
• Study programme: Title: Mining Engineering; specializations in: Mining engineering, Geotechnical engineering, Waste treatment and disposal; Course: Mining engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka rudarstva (magistar/magistra inženjer/inženjerka rudarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-10-15 13:13:42