LAPSE:2020.0509
Published Article
LAPSE:2020.0509
Recovering Scandium from Scandium Rough Concentrate Using Roasting-Hydrolysis-Leaching Process
May 22, 2020
In this study, a roasting-hydrolysis-acid leaching process is used to extract scandium from the scandium rough concentrate. The scandium rough concentrate containing Sc2O3 of 76.98 g/t was obtained by magnetic separation, gravity separation, and electric separation from Sc-bearing Vi-Ti magnetite tailings in the Panxi area of China. The majority of scandium in scandium rough concentrate mainly occurs in diopside, titanopyroxene, montmorillonite, chlorite, talc, aluminosilicate minerals, and isomorphism. Sodium salt and scandium coarse concentrate are added into the roasting furnace for roasting, which makes the fusion reaction of silicon, aluminum and sodium salt to produce soluble salts such as sodium silicate and sodium metaaluminate. Scandium is further recovered from the hydrolysis residue by acid leaching. Test results show scandium leaching recovery of 95.12% and the acid leaching residue with Sc2O3 content of 8.12 g/t are obtained, while the extraction of scandium is obvious. There is no obvious peak value of Scandium spectrum in hydrochloric acid leach residue. Most of scandium in hydrolytic residue is dissolved into Sc3+ and enters into the liquid phase. The main minerals in leach residue are perovskite, ferric silicate, and olivine.
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Keywords
hydrolysis, leaching, roasting, scandium, scandium rough concentrate
Subject
Suggested Citation
Xiao J, Peng Y, Ding W, Chen T, Zou K, Wang Z. Recovering Scandium from Scandium Rough Concentrate Using Roasting-Hydrolysis-Leaching Process. (2020). LAPSE:2020.0509
Author Affiliations
Xiao J: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Sichuan Province for Comprehensive Utilization of Vanadium and Titani [ORCID]
Peng Y: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Ding W: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Chen T: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Zou K: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Wang Z: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Peng Y: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Ding W: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Chen T: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Zou K: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Wang Z: Sichuan Engineering Lab of Non-Metallic Mineral Powder Modification and High-Value Utilization, Southwest University of Science and Technology, Mianyang 621010, China; Key Laboratory of Ministry of Education for Solid Waste Treatment and Resource Recycle,
Journal Name
Processes
Volume
8
Issue
3
Article Number
E365
Year
2020
Publication Date
2020-03-22
Published Version
ISSN
2227-9717
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Original Submission
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PII: pr8030365, Publication Type: Journal Article
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LAPSE:2020.0509
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doi:10.3390/pr8030365
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[v1] (Original Submission)
May 22, 2020
Verified by curator on
May 22, 2020
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https://psecommunity.org/LAPSE:2020.0509
Original Submitter
Calvin Tsay
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