{"created":"2023-07-25T10:23:35.613607+00:00","id":3300,"links":{},"metadata":{"_buckets":{"deposit":"16c59c47-1c57-4245-854d-cdf2ec1b783b"},"_deposit":{"created_by":18,"id":"3300","owners":[18],"pid":{"revision_id":0,"type":"depid","value":"3300"},"status":"published"},"_oai":{"id":"oai:air.repo.nii.ac.jp:00003300","sets":["590:973:974:1172"]},"author_link":["11196"],"item_10006_alternative_title_32":{"attribute_name":"別タイトル","attribute_value_mlt":[{"subitem_alternative_title":"湿式分離プロセスを用いたアパタイト鉱石からのレアアース回収"}]},"item_10006_biblio_info_34":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2018-09-28","bibliographicIssueDateType":"Issued"},"bibliographic_titles":[{}]}]},"item_10006_date_granted_41":{"attribute_name":"学位授与年月日","attribute_value_mlt":[{"subitem_dategranted":"2018-09-28"}]},"item_10006_degree_grantor_40":{"attribute_name":"学位授与機関","attribute_value_mlt":[{"subitem_degreegrantor":[{"subitem_degreegrantor_name":"秋田大学"}],"subitem_degreegrantor_identifier":[{"subitem_degreegrantor_identifier_name":"11401","subitem_degreegrantor_identifier_scheme":"kakenhi"}]}]},"item_10006_degree_name_39":{"attribute_name":"学位名","attribute_value_mlt":[{"subitem_degreename":"博士（工学）"}]},"item_10006_description_27":{"attribute_name":"内容記述（抄録）","attribute_value_mlt":[{"subitem_description":"The demand for rare earth elements has increased in recent years due to uncertainty of supply and the high technological applications associated with their electronic, optical and magnetic properties. Currently, China has provided over 90% of the world's total output of rare earths. Commercially operating mines around the world mainly extract bastnasite, monazite and xenotime ores. Due to fast depletion of REEs reserves, the another rare earth sources need to be found. Apatite is one of the important REEs host minerals and can be a potential source for the REEs. Separation of REEs from apatite has not been studied extensively compared with other main minerals such as monazite, bastnasite and xenotime. The experimental trials for the selective leaching of REEs from apatite were still unsuccessful with sulphuric acid because calcium and most REEs contained in apatite were precipitated as a phosphogypsum. Therefore, it was essential to develop an effective method for extraction of REEs from apatite ores. This rsearch intended to cultivate REEs recovery process from apatite ores by leaching, solvent extraction, stripping, precipitation and calcination. This PhD thesis composes of (5) chapters: introduction, main (3) chapters, where an advanced hydrometallurgical process of REOs production from apatite were discussed, and the conclusion.","subitem_description_type":"Other"}]},"item_10006_dissertation_number_42":{"attribute_name":"学位授与番号","attribute_value_mlt":[{"subitem_dissertationnumber":"甲第1271号"}]},"item_10006_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.20569/00003660","subitem_identifier_reg_type":"JaLC"}]},"item_10006_publisher_28":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"秋田大学"}]},"item_10006_version_type_35":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"BATTSENGEL, ARIUNTUYA"}],"nameIdentifiers":[{"nameIdentifier":"11196","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-11-29"}],"displaytype":"detail","filename":"kouhakuyoushikou1271.pdf","filesize":[{"value":"260.4 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"内容要旨及び審査結果要旨","url":"https://air.repo.nii.ac.jp/record/3300/files/kouhakuyoushikou1271.pdf"},"version_id":"e4e1942a-3289-4794-b1d0-f0a83c021683"},{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2019-06-17"}],"displaytype":"detail","filename":"kouhakukou 1271.pdf","filesize":[{"value":"7.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"本文","url":"https://air.repo.nii.ac.jp/record/3300/files/kouhakukou 1271.pdf"},"version_id":"b4ddf8c6-83aa-40ee-a6cc-77b3335c7231"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"doctoral thesis","resourceuri":"http://purl.org/coar/resource_type/c_db06"}]},"item_title":"Recovery of Rare Earth Elements from Apatite Ores by Hydrometallurgical Prosess","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Recovery of Rare Earth Elements from Apatite Ores by Hydrometallurgical Prosess"}]},"item_type_id":"10006","owner":"18","path":["1172"],"pubdate":{"attribute_name":"公開日","attribute_value":"2018-11-29"},"publish_date":"2018-11-29","publish_status":"0","recid":"3300","relation_version_is_last":true,"title":["Recovery of Rare Earth Elements from Apatite Ores by Hydrometallurgical Prosess"],"weko_creator_id":"18","weko_shared_id":-1},"updated":"2023-07-25T11:21:03.338901+00:00"}