{"id":655,"date":"2020-06-18T15:38:40","date_gmt":"2020-06-18T12:38:40","guid":{"rendered":"https:\/\/www.slts.fi\/development-and-modification-of-scandium-production-process\/"},"modified":"2024-11-22T15:13:33","modified_gmt":"2024-11-22T13:13:33","slug":"development-and-modification-of-scandium-production-process","status":"publish","type":"post","link":"https:\/\/www.slts.fi\/en\/development-and-modification-of-scandium-production-process\/","title":{"rendered":"Development and modification of Scandium production process"},"content":{"rendered":"<p>Ended year 2021<\/p>\n<h3>Researcher<\/h3>\n<p><strong>M.Sc. Rita Kallio<\/strong><\/p>\n<h3>Supervisors<\/h3>\n<p>Professors Timo Fabritius (Metallurgy), Saija Luukkanen (Mineral processing) and Ulla Lassi (Hydrometallurgy)<\/p>\n<h3><strong>Description of the project:<\/strong><\/h3>\n<p>Scandium provides technological advantages, particularly in solid oxide fuel cells and aluminum alloys, in respect of transportation applications due to its capacity to increase strength and weldability. The focus of this project is to develop a material and cost-efficient process to extract scandium from the recently discovered Kiviniemi mafic intrusion, which is a primary scandium occurrence with estimated 13.4 Mt @ 163 ppm Sc. Based on the geochemical characteristics of scandium, its enrichment to ore grades by geological processes is scarce. Consequently, the estimated global scandium production is currently only 15 t\/a. Given the limited volume of the current global scandium production, the Kiviniemi deposit provides a potential new source for the expectedly increasing demand of this unique rare earth metal, classified as a critical raw material for the European Union. There are no other Kiviniemi-type scandium deposits known in Europe. In the Kiviniemi deposit, scandium occurs in pyroxene and amphibole, which respond well to magnetic preconcentration (Figure 1). In addition to the conventional preconcentration methods, the proposed processing scheme investigated in this research project includes high-temperature upgrading of the concentrate to produce Sc-containing amorphous phase along with crude iron. The Sc-containing amorphous phase is further treated with hydrometallurgical processes to produce the desired Sc<sub>2<\/sub>O<sub>3<\/sub>-product. The purpose of this research is to investigate the main features and boundary conditions related to each proposed step, the results of which will be published in relevant journals. This project promotes the beneficiation of the Kiviniemi scandium deposit through interdisciplinary research, extending from mineral processing to the pyrometallurgical treatment and hydrometallurgical aspects of scandium extraction.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-468\" src=\"https:\/\/www.slts.fi\/wpc\/uploads\/2024\/10\/Skatumo-kuvat.jpg\" alt=\"\" width=\"774\" height=\"463\" srcset=\"https:\/\/www.slts.fi\/wpc\/uploads\/2024\/10\/Skatumo-kuvat.jpg 774w, https:\/\/www.slts.fi\/wpc\/uploads\/2024\/10\/Skatumo-kuvat-300x179.jpg 300w, https:\/\/www.slts.fi\/wpc\/uploads\/2024\/10\/Skatumo-kuvat-768x459.jpg 768w, https:\/\/www.slts.fi\/wpc\/uploads\/2024\/10\/Skatumo-kuvat-90x54.jpg 90w\" sizes=\"auto, (max-width: 774px) 100vw, 774px\" \/><\/p>\n<p><strong>Figure 1<\/strong>. Stereomicroscope images of dry magnetic separated fractions from the Kiviniemi sample. The dark particles (black and green) represent scandium-containing pyroxene and amphibole, together with ilmenite, iron oxides and sulphides. The red grains are garnet (almandine) and the colourless or slightly yellow\/orange grains are mainly plagioclase and potassium feldspar. A-D): 250-500 \u00b5m size fraction separated with A) hand magnet, B) Frantz 0.4 A, C) Frantz 0.8 A and D) Nmags; E-H): 125-250 \u00b5m size fraction; I-L): 63-125 \u00b5m size fraction; and M-P): 32-63 \u00b5m size fraction, separated in respective order.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-155\" src=\"https:\/\/www.slts.fi\/wpc\/uploads\/2024\/11\/M.Sc_.-Rita-Kallio-investigating-the-mineralogy-of-Kiviniemi-sample.jpg\" alt=\"\" width=\"622\" height=\"839\" srcset=\"https:\/\/www.slts.fi\/wpc\/uploads\/2024\/11\/M.Sc_.-Rita-Kallio-investigating-the-mineralogy-of-Kiviniemi-sample.jpg 622w, https:\/\/www.slts.fi\/wpc\/uploads\/2024\/11\/M.Sc_.-Rita-Kallio-investigating-the-mineralogy-of-Kiviniemi-sample-222x300.jpg 222w, https:\/\/www.slts.fi\/wpc\/uploads\/2024\/11\/M.Sc_.-Rita-Kallio-investigating-the-mineralogy-of-Kiviniemi-sample-67x90.jpg 67w\" sizes=\"auto, (max-width: 622px) 100vw, 622px\" \/><\/p>\n<p><em>M.Sc. Rita Kallio<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Ended year 2021 Researcher M.Sc. Rita Kallio Supervisors Professors Timo Fabritius (Metallurgy), Saija Luukkanen (Mineral processing) and Ulla Lassi (Hydrometallurgy) Description of the project: Scandium&#8230;<\/p>\n","protected":false},"author":1,"featured_media":220,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[42,22,45],"tags":[],"class_list":["post-655","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-completed-projects","category-news","category-projects"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Development and modification of Scandium production process - Suomen Luonnonvarain Tutkimuss\u00e4\u00e4ti\u00f6<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.slts.fi\/en\/development-and-modification-of-scandium-production-process\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Development and modification of Scandium production process - Suomen Luonnonvarain Tutkimuss\u00e4\u00e4ti\u00f6\" \/>\n<meta property=\"og:description\" content=\"Ended year 2021 Researcher M.Sc. 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