{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,2]],"date-time":"2026-10-02T19:56:02Z","timestamp":1790970962237,"version":"4.1.0"},"reference-count":26,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2020,4,14]],"date-time":"2020-04-14T00:00:00Z","timestamp":1586822400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["U1560203"],"award-info":[{"award-number":["U1560203"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Science and Technology Program of Sichuan Province China","award":["18SYXHZ0069"],"award-info":[{"award-number":["18SYXHZ0069"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>In this study, high-purity iron with purity of 99.987 wt.% was prepared employing a process of direct reduction\u2013melting separation\u2013slag refining. The iron ore after pelletizing and roasting was reduced by hydrogen to obtain direct reduced iron (DRI). Carbon and sulfur were removed in this step and other impurities such as silicon, manganese, titanium and aluminum were excluded from metallic iron. Dephosphorization was implemented simultaneously during the melting separation step by making use of the ferrous oxide (FeO) contained in DRI. The problem of deoxidization for pure iron was solved, and the oxygen content of pure iron was reduced to 10 ppm by refining with a high basicity slag. Compared with electrolytic iron, the pure iron prepared by this method has tremendous advantages in cost and scale and has more outstanding quality than technically pure iron, making it possible to produce high-purity iron in a short-flow, large-scale, low-cost and environmentally friendly way.<\/jats:p>","DOI":"10.3390\/ma13081839","type":"journal-article","created":{"date-parts":[[2020,4,15]],"date-time":"2020-04-15T04:01:46Z","timestamp":1586923306000},"page":"1839","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["The Preparation of High-Purity Iron (99.987%) Employing a Process of Direct Reduction\u2013Melting Separation\u2013Slag Refining"],"prefix":"10.3390","volume":"13","author":[{"given":"Bin","family":"Li","sequence":"first","affiliation":[{"name":"School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China"},{"name":"Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2163-6430","authenticated-orcid":false,"given":"Guanyong","family":"Sun","sequence":"additional","affiliation":[{"name":"School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China"},{"name":"Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shaoying","family":"Li","sequence":"additional","affiliation":[{"name":"School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China"},{"name":"Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hanjie","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China"},{"name":"Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jing","family":"Guo","sequence":"additional","affiliation":[{"name":"School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China"},{"name":"Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"761","DOI":"10.1016\/0022-3697(87)90073-4","article-title":"Elaboration of high purity iron (RRR4000) by horizontal zone melting\u2014Attempts for chemical characterization","volume":"48","author":"Faudot","year":"1987","journal-title":"J. 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