Ανάκτηση νικελίου από τις σκουριές ηλεκτροκαμίνων της Γ.Μ.Μ.Α.Ε. ΛΑΡΚΟ

Σακάρογλου, Μαριάννα; Sakaroglou, Marianna

dc.contributor.author	Σακάρογλου, Μαριάννα	el
dc.contributor.author	Sakaroglou, Marianna	en
dc.date.accessioned	2016-04-01T09:45:05Z
dc.date.available	2016-04-01T09:45:05Z
dc.date.issued	2016-04-01
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/42303
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.11655
dc.rights	Default License
dc.subject	Εμπλουτισμός	el
dc.subject	Μεταλλουργία	el
dc.subject	Νικέλιο	el
dc.subject	Μαγνητικός διαχωρισμός	el
dc.subject	Διαχωρισμός	el
dc.title	Ανάκτηση νικελίου από τις σκουριές ηλεκτροκαμίνων της Γ.Μ.Μ.Α.Ε. ΛΑΡΚΟ	el
heal.type	bachelorThesis
heal.classification	Μεταλλουργία	el
heal.classification	Εμπλουτισμός	el
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2015-07-22
heal.abstract	Η παρούσα διπλωματική εργασία αφορά στην ανάκτηση του νικελίου σε δείγμα σκουριάς των ηλεκτροκαμίνων της εταιρείας Γ.Μ.Μ.Α.Ε. ΛΑΡΚΟ με περιεκτικότητα σε νικέλιο (Ni) 0,12%. Αρχικά έγινε ορυκτολογική μελέτη της σκουριάς και στη συνέχεια διερευνήθηκε η δυνατότητα ανάκτησης του περιεχόμενου νικελίου με μαγνητικό διαχωρισμό.	el
heal.abstract	The present Diploma Thesis deals with the nickel recovery from electric arc furnace slag wit h 0,12% Ni, which originated from the metallurgical plant of G.M.M. S.A. LARC O. After m ineralogical examination , the recovery of nickel from the slag was attempted by applying magnetic separation. The effect of the following parameters was studied: grain size, magnetic field intensity, thickness of slag layer, and moisture content. In the current study, tests were carried out using a hand - magnet or high intensity magnetic separator (HIMS). In the case of hand - magnet, the magnetic field intensity was regula ted by changing the distance of the magnet from the material. In the case of HIMS, tests were carried out at two levels of electric current intensity, e.g. at a low level of 0.5 and a high - level of 1A. Finally , there was investigated the effect size reduct ion of the slag. The chemical analysis of the sieve fractions clearly shows that nickel content in the coarser particles is higher than that in the finer. More specifically , the nickel content of the particles with size - 8.00+2.80 mm is 0,84% Ni . In respec t to HIMS , the results show that the magnetic products are characterized by low nickel conte nt and high recovery ( higher than 90%). Also, there was obse rved no significant difference between magnetic and non - magnetic products as regards their grade while, in some cases, the nickel content was low enough, not exceeding 0.10% Ni. On the contrary , tests with hand - magnet at the minimum separation distance resulted in products of both high grade (higher than 1% Ni) and recovery. Best results were obtained for th e sieve fraction - 8 . 00 +4 . 70 mm , with the grade of the magnetic product reaching 1 . 31% Ni and the recovery exceeding 97%. In respect to the layer thickness of the slag , better results as concerns recovery are obtained at a monolayer separation. Also, the si ze reduction of the material didn’t improve nickel recovery . Finally, small increase of the moisture content in the finer particles of the feed (below 2.80mm) seems to result in slightly better results, but, for safe conclusions, more detailed investigatio n of moisture effect is necessary. The current Diploma Thesis investigates the possibility to recover nickel from the electric furnace slag from the metallurgical plant of G . M . M . S . A . LARCO Ferronickel Ανάκτηση Νικελίου από τις Σκουριές Ηλεκτροκαμίνων της Γ.Μ.Μ.Α.Ε. ΛΑΡΚΟ vii Co . by studying the effect of the process determinin g factors . Tests were carried out at lab - scale level ; further testing at industrial level have to be carried out aiming at the optimization of the process .	en
heal.advisorName	Αναστασάκης, Γεώργιος	el
heal.committeeMemberName	Αγατζίνη - Λεονάρδου, Στυλιανή	el
heal.committeeMemberName	Τσακαλάκης, Κων/νος	el
heal.committeeMemberName	Αναστασάκης, Γεώργιος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Μηχανικών Μεταλλείων Μεταλλουργών. Τομέας Μεταλλουργίας και Τεχνολογίας Υλικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	90 σ.
heal.fullTextAvailability	true