{"id":{"repo_id":"greece","oai_identifier":"oai:10442/1521"},"canonical_url":"https://search.dev.ndltd.org/etd/greece/oai:10442/1521","repository":{"repo_id":"greece","name":"Greek National Archive of PhD Theses","base_url":"https://phdtheses.ekt.gr/eadd_oai/request"},"display":{"title":"ΕΚΧΥΛΙΣΗ ΛΑΤΕΡΙΤΩΝ ΜΕ ΘΕΙΙΚΟ ΟΞΥ ΥΠΟ ΠΙΕΣΗ","abstract":"THE EXTRACTION OF NICKEL AND COBALT FROM LOW GRADE GREEK LATERITE ORIS IS ACCELARATED AT CONDITIONS OF HIGH TEMPERATURE- PRESSURE. THE EXTRACTION VALUES REACH100% UNDER CONDITIONS OF 220-260 C TEMPERATURE, 40-60 BAR PRESSURE 2 H DURATION. NUTRALIZATION OF THE EFFLVENTS IS VERY SATISFACTORY. THE DESIGN OF A METALLURGICAL FACTORY FOR NICKEL PRODUCTION WAS STUDIED WITH THE USE OF A IBM COMPUTERAND THE \"FLEXMES\" COMPUTER PROGRAMME.","abstract_html":"THE EXTRACTION OF NICKEL AND COBALT FROM LOW GRADE GREEK LATERITE ORIS IS ACCELARATED AT CONDITIONS OF HIGH TEMPERATURE- PRESSURE. THE EXTRACTION VALUES REACH100% UNDER CONDITIONS OF 220-260 C TEMPERATURE, 40-60 BAR PRESSURE 2 H DURATION. NUTRALIZATION OF THE EFFLVENTS IS VERY SATISFACTORY. THE DESIGN OF A METALLURGICAL FACTORY FOR NICKEL PRODUCTION WAS STUDIED WITH THE USE OF A IBM COMPUTERAND THE "FLEXMES" COMPUTER PROGRAMME.","abstract_has_math":false,"creators":["Κομνίτσας, Κωνσταντίνος"],"institution":"Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":1991,"date_issued":"1991","date_published":"1991","updated_at":"2026-07-24T02:24:59Z","subjects":["AUTOCLANG","Cobalt","Hydrometallurgy","Laterites","Leaching","Nickel","PRESSURE LEACHING","SULFURIC ACID","ΑΥΤΟΚΛΕΙΣΤΟ","Εκχύλιση","ΘΕΙΙΚΟ ΟΞΥ","Κοβάλτιο","Λατερίτες","Νικέλιο","Πίεση","Υδρομεταλλουργία","Engineering and Technology","Environmental Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Περιβαλλοντική Μηχανική"],"languages":["gre"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1521"],"render_values":[{"text":"10.12681/eadd/1521","href":"https://doi.org/10.12681/eadd/1521","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10442/hedi/1521","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Κομνίτσας, Κωνσταντίνος"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["1991"]},{"key":"dc:publisher","label":"Institution","values":["Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","National Technical University of Athens (NTUA)"]},{"key":"dc:type","label":"Dc Type","values":["PhD Thesis"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["AUTOCLANG","Cobalt","Hydrometallurgy","Laterites","Leaching","Nickel","PRESSURE LEACHING","SULFURIC ACID","ΑΥΤΟΚΛΕΙΣΤΟ","Εκχύλιση","ΘΕΙΙΚΟ ΟΞΥ","Κοβάλτιο","Λατερίτες","Νικέλιο","Πίεση","Υδρομεταλλουργία","Engineering and Technology","Environmental Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Περιβαλλοντική Μηχανική"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["gre"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.12681/eadd/1521","http://hdl.handle.net/10442/hedi/1521"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["THE EXTRACTION OF NICKEL AND COBALT FROM LOW GRADE GREEK LATERITE ORIS IS ACCELARATED AT CONDITIONS OF HIGH TEMPERATURE- PRESSURE. THE EXTRACTION VALUES REACH100% UNDER CONDITIONS OF 220-260 C TEMPERATURE, 40-60 BAR PRESSURE 2 H DURATION. NUTRALIZATION OF THE EFFLVENTS IS VERY SATISFACTORY. THE DESIGN OF A METALLURGICAL FACTORY FOR NICKEL PRODUCTION WAS STUDIED WITH THE USE OF A IBM COMPUTERAND THE \"FLEXMES\" COMPUTER PROGRAMME.","Η ΕΞΑΓΩΓΗ ΝΙΚΕΛΙΟΥ ΚΑΙ ΚΟΒΑΛΤΙΟΥ ΑΠΟ ΕΛΛΗΝΙΚΟΥΣ ΛΑΤΕΡΙΤΕΣ ΧΑΜΗΛΩΝ ΜΕΤΑΛΛΙΚΩΝ ΑΞΙΩΝ ΕΠΙΤΑΧΥΝΕΤΑΙ ΣΕ ΣΥΝΘΗΚΕΣ ΥΨΗΛΗΣ ΘΕΡΜΟΚΡΑΣΙΑΣ ΚΑΙ ΠΙΕΣΗΣ. Η ΕΞΑΓΩΓΗ ΠΛΗΣΙΑΖΕΙ ΤΟ 100% ΣΕ ΣΥΝΘΗΚΕΣ ΕΚΧΥΛΙΣΗΣ ΜΕ ΘΕΙΙΚΟ ΟΞΥ ΥΠΟ ΠΙΕΣΗ ΘΕΡΜΟΚΡΑΣΙΑΣ 220-260 C ΚΑΙ ΠΙΕΣΗΣ 40-60 BAR ΣΕ ΔΙΑΣΤΗΜΑ 2 Η. Η ΕΞΟΥΔΕΤΕΡΩΣΗ ΤΩΝ ΑΠΟΒΛΗΤΩΝ ΕΙΝΑΙ ΑΚΡΩΣ ΙΚΑΝΟΠΟΙΗΤΙΚΗ. ΚΑΤΑ ΤΗ ΔΙΑΡΚΕΙΑ ΤΗΣ ΔΙΑΤΡΙΒΗΣ ΕΞΕΤΑΣΤΗΚΕ Ο ΣΧΕΔΙΑΣΜΟΣ ΕΡΓΑΣΤΑΣΙΟΥ ΠΑΡΑΓΩΓΗΣ ΝΙΚΕΛΙΟΥ ΜΕ ΧΡΗΣΗ Η/Υ ΚΑΙ ΤΟ ΠΡΟΓΡΑΜΜΑ FLEXMES."]},{"key":"dc:title","label":"Title","values":["ΕΚΧΥΛΙΣΗ ΛΑΤΕΡΙΤΩΝ ΜΕ ΘΕΙΙΚΟ ΟΞΥ ΥΠΟ ΠΙΕΣΗ","EXTRACTION OF NICKEL AND COBALT FROM GREEK LATERITES UNDER SULFURIC ACID PRESSURE LEACHING"]}]}],"canonical_facts":{"dc:creator":["Κομνίτσας, Κωνσταντίνος"],"dc:date":["1991"],"dc:description":["THE EXTRACTION OF NICKEL AND COBALT FROM LOW GRADE GREEK LATERITE ORIS IS ACCELARATED AT CONDITIONS OF HIGH TEMPERATURE- PRESSURE. THE EXTRACTION VALUES REACH100% UNDER CONDITIONS OF 220-260 C TEMPERATURE, 40-60 BAR PRESSURE 2 H DURATION. NUTRALIZATION OF THE EFFLVENTS IS VERY SATISFACTORY. THE DESIGN OF A METALLURGICAL FACTORY FOR NICKEL PRODUCTION WAS STUDIED WITH THE USE OF A IBM COMPUTERAND THE \"FLEXMES\" COMPUTER PROGRAMME.","Η ΕΞΑΓΩΓΗ ΝΙΚΕΛΙΟΥ ΚΑΙ ΚΟΒΑΛΤΙΟΥ ΑΠΟ ΕΛΛΗΝΙΚΟΥΣ ΛΑΤΕΡΙΤΕΣ ΧΑΜΗΛΩΝ ΜΕΤΑΛΛΙΚΩΝ ΑΞΙΩΝ ΕΠΙΤΑΧΥΝΕΤΑΙ ΣΕ ΣΥΝΘΗΚΕΣ ΥΨΗΛΗΣ ΘΕΡΜΟΚΡΑΣΙΑΣ ΚΑΙ ΠΙΕΣΗΣ. Η ΕΞΑΓΩΓΗ ΠΛΗΣΙΑΖΕΙ ΤΟ 100% ΣΕ ΣΥΝΘΗΚΕΣ ΕΚΧΥΛΙΣΗΣ ΜΕ ΘΕΙΙΚΟ ΟΞΥ ΥΠΟ ΠΙΕΣΗ ΘΕΡΜΟΚΡΑΣΙΑΣ 220-260 C ΚΑΙ ΠΙΕΣΗΣ 40-60 BAR ΣΕ ΔΙΑΣΤΗΜΑ 2 Η. Η ΕΞΟΥΔΕΤΕΡΩΣΗ ΤΩΝ ΑΠΟΒΛΗΤΩΝ ΕΙΝΑΙ ΑΚΡΩΣ ΙΚΑΝΟΠΟΙΗΤΙΚΗ. ΚΑΤΑ ΤΗ ΔΙΑΡΚΕΙΑ ΤΗΣ ΔΙΑΤΡΙΒΗΣ ΕΞΕΤΑΣΤΗΚΕ Ο ΣΧΕΔΙΑΣΜΟΣ ΕΡΓΑΣΤΑΣΙΟΥ ΠΑΡΑΓΩΓΗΣ ΝΙΚΕΛΙΟΥ ΜΕ ΧΡΗΣΗ Η/Υ ΚΑΙ ΤΟ ΠΡΟΓΡΑΜΜΑ FLEXMES."],"dc:identifier":["10.12681/eadd/1521","http://hdl.handle.net/10442/hedi/1521"],"dc:language":["gre"],"dc:publisher":["Εθνικό Μετσόβιο Πολυτεχνείο (ΕΜΠ)","National Technical University of Athens (NTUA)"],"dc:subject":["AUTOCLANG","Cobalt","Hydrometallurgy","Laterites","Leaching","Nickel","PRESSURE LEACHING","SULFURIC ACID","ΑΥΤΟΚΛΕΙΣΤΟ","Εκχύλιση","ΘΕΙΙΚΟ ΟΞΥ","Κοβάλτιο","Λατερίτες","Νικέλιο","Πίεση","Υδρομεταλλουργία","Engineering and Technology","Environmental Engineering","Επιστήμες Μηχανικού και Τεχνολογία","Περιβαλλοντική Μηχανική"],"dc:title":["ΕΚΧΥΛΙΣΗ ΛΑΤΕΡΙΤΩΝ ΜΕ ΘΕΙΙΚΟ ΟΞΥ ΥΠΟ ΠΙΕΣΗ","EXTRACTION OF NICKEL AND COBALT FROM GREEK LATERITES UNDER SULFURIC ACID PRESSURE LEACHING"],"dc:type":["PhD Thesis"]},"updated_at":"2026-07-24T02:24:59Z"}