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CREATED:20260513T082743Z
LAST-MODIFIED:20260513T082743Z
DTSTAMP:20261014T045236Z
UID:1791942756@tuc.gr
SUMMARY:Παρουσίαση Μεταπτυχιακής Εργασίας κ.
  Αλεξόπουλου Ηλία, Σχολή ΜΗΧΟΠ
LOCATION:Μ3 - Κτίριο ΜΗΧΟΠ, Μ3.108, ΔΙΑ ΖΩΣΗΣ
DESCRIPTION:https://www.tuc.gr/el/to-polytechnei
 o/ilektronikes-ypiresies/imerologio/
 imerologio-ekdiloseon-1?tx_tucevents
 2_tuceventsdisplay%5Baction%5D=show&
 tx_tucevents2_tuceventsdisplay%5Bcon
 troller%5D=Event&tx_tucevents2_tucev
 entsdisplay%5Bevent%5D=8411&cHash=b6
 76e25031d9748adcd92300f6a785bb\nΤίτλ
 ος εργασίας (αγγλικά): Advances in b
 eneficiation of a low-grade petalite
  ore.\n (Ελληνικά) : Πρόοδοι στον εμ
 πλουτισμό χαμηλής ποιότητας μεταλλεύ
 ματος πεταλίτη.\n  \n Tριμελής εξετα
 στική επιτροπή\n 1. Ευάγγελος Πετράκ
 ης, επικ. καθηγητής σχολής ΜΗΧΟΠ (Επ
 ιβλέπων)\n 2.Κωνσταντίνος Κομνίτσας,
  καθηγητής σχολής ΜΗΧΟΠ\n 3. Μιχαήλ 
 Γαλετάκης, καθηγητής σχολής ΜΗΧΟΠ\n 
  \n Περίληψη\n The importance of lit
 hium (Li) is recognized by major eco
 nomies, with the United States (US) 
 and European Union (EU) designating 
 it as a strategic raw material (SRM)
  necessary for technological breakth
 rough towards the green and digital 
 transition.\n Over the last few year
 s both industry and academia focused
  on the production of battery-grade 
 concentrates (typical targets >6%
  Li2O and <1.0% Fe2O3), suitable 
 for lithium carbonate (LiCO3) and/or
  lithium hydroxide (LiOH) conversion
 , from hard-rock lithium-bearing min
 erals, such as spodumene, lepidolite
  and petalite. The beneficiation of 
 petalite-type pegmatites presents si
 gnificant challenges due to their lo
 w Li2O content, complex mineralogy a
 nd the presence of gangue minerals t
 hat exhibit similar physical and che
 mical properties to petalite.\n In t
 his dissertation the laboratory-scal
 e beneficiation of a low-grade petal
 ite ore (0.92% Li2O), to pre-concent
 rate petalite or produce high-grade 
 petalite concentrate, by heavy-liqui
 ds separation (HLS), wet high intens
 ity magnetic separation (WHIMS) and 
 froth flotation is being discussed. 
 Heavy-liquids separation shows that 
 both the sink 2.65 and the float 2.5
 5 fractions are enriched in Li2O (1.
 99% and 1.54%, respectively) compare
 d to the intermediate gravimetric fr
 action (0.43% Li2O). Magnetic separa
 tion shows that magnetic products ar
 e enriched in Li2O (~1.2%) compared 
 to non-magnetic product (0.84% Li2O)
 . Froth flotation tests after severa
 l rougher and cleaner stages result 
 in a final float product containing 
 1.16% Li2O.\n Λέξεις κλειδιά (Ελληνι
 κά): λίθιο, πεταλίτης, εμπλουτισμός,
  βαρέα υγρά, μαγνητικός διαχωρισμός,
  επίπλευση.\n Λέξεις κλειδιά (Αγγλικ
 ά): lithium; petalite; ore beneficia
 tion; heavy-liquids separation (HLS)
 ; magnetic separation;\n froth flota
 tion.\n
STATUS:CONFIRMED
ORGANIZER;RSVP=FALSE;CN=TUC;CUTYPE=TUC:mailto:webmaster@tuc.gr
DTSTART:20260521T110000
DTEND:20260521T120000
TRANSP:OPAQUE
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