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| 001 | 632236 | ||
| 005 | 20250723110056.0 | ||
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| 100 | 1 | _ | |a Wunderlich, Sophie |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a A microfocus study on basic-oxygen-furnace slag thin sections to understand the principles of vanadium incorporation |
| 260 | _ | _ | |a Chester |c 2025 |b IUCr |
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| 520 | _ | _ | |a Vanadium in basic-oxygen-furnace (BOF) slags is particularly interestingregarding the recovery of this element, which has been further strengthened byits inclusion in the list of critical raw materials by the European Union in 2017.As BOF slags can have a significant vanadium content, they continue to be apromising secondary vanadium source. Therefore, the binding mechanisms ofvanadium in the respective slag minerals must be fundamentally understood toadapt a recovery process, which enables a sufficient yield and is environmentallyfriendly and resource-saving. This study presents a synchrotron chemical-imaging investigation based on a combined micro X-ray fluorescence, microX-ray diffraction and micro X-ray absorption near-edge structure analysis,enabling new insights into vanadium incorporation in BOF slags. In contrast tothe previously assumed incorporation of vanadium directly into the calciumsilicates, it was shown that vanadium accumulates in their boundary regions astetrahedral V5+ in a structure deviating from calcium silicates. This structure ismost likely a poorly crystalline residuum consisting mainly of calcium, siliconand vanadium (and oxygen) but shows no evidence of a glass phase. Addi-tionally, vanadium occurs as octahedral V4+ in calcium ferrites and as tetra-hedral V5+ in very small quantities directly in the calcium silicates. Thesignificant enrichment of vanadium in the boundary regions of calcium silicatestogether with the high oxidations states, resulting in high mobility, can beregarded as advantageous for future recycling strategies |
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| 536 | _ | _ | |a DFG project G:(GEPRIS)470367641 - Entstehung kritischer Verbindungen in Recycling Schlacken - eine Studie der Chemie der Schmelze mit MD Simulation und der festen Produkte in einem mikropraeparativen Ansatz (470367641) |0 G:(GEPRIS)470367641 |c 470367641 |x 1 |
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| 700 | 1 | _ | |a Fittschen, Ursula |0 P:(DE-H253)PIP1009675 |b 4 |
| 773 | _ | _ | |a 10.1107/S1600577525003868 |g Vol. 32, no. 4, p. 986 - 993 |0 PERI:(DE-600)2021413-3 |n 4 |p 986 - 993 |t Journal of synchrotron radiation |v 32 |y 2025 |x 0909-0495 |
| 856 | 4 | _ | |y OpenAccess |u https://bib-pubdb1.desy.de/record/632236/files/vl5041.pdf |
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