Separation of Non-metallic Inclusions from a Fe-Al-O Melt Using a Super-Gravity Field

Song, Gaoyang; Song, Bo; Guo, Zhen; Yang, Yunfeng; Song, Mingming

doi:10.1007/s11663-017-1099-1

Cited by 6 publications

(2 citation statements)

References 32 publications

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“…[31][32][33] Compared with the conventional gravity field, the interphase area is greatly increased, the diffusivity of substances is obviously improved, the phase interface is fast updated, and the micromixing of different phases is accelerated, to greatly enhance the mass transfer of substance. Thus the supergravity technology has been studied in the following metallurgy fields: (a) removal of impurity elements (such as Fe, Si, and Cu) from molten metals, 27,34) (b) enrichment of valuable elements (such as Ti, V, RE, and P) from metallurgical slags, 25,28,30,31,[35][36][37][38][39][40][41] (c) separation of non-metallic inclusions (such as Al 2 O 3 particle) from molten metal, [42][43][44] and (d) refinement of the solidification structure of metal alloy (such as Al-Cu alloy). 28,29,45) The research results have demonstrated that the supergravity technology is a high-efficiency method for purifying the molten metal, recycling the valuable elements, and refining the solidification structure according to three selective features (namely selective separating, selective concentrating and selective growing).…”

Section: Introductionmentioning

confidence: 99%

“…28,29,45) The research results have demonstrated that the supergravity technology is a high-efficiency method for purifying the molten metal, recycling the valuable elements, and refining the solidification structure according to three selective features (namely selective separating, selective concentrating and selective growing). [35][36][37][38][39][40][41][42][43][44][45] Vanadium slag is mainly composed of four oxides, namely FeO, SiO 2 , V 2 O 3 and TiO 2 , as shown in Table 1. 8,12) Si is mainly existed in the fayalite phase.…”

Section: Introductionmentioning

confidence: 99%

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Separation of Vanadium and Titanium Phase from the Vanadium Slag System Utilizing Supergravity

Huang

Liu

2021

ISIJ Int.

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To effectively recycle and utilize vanadium and titanium resource from the vanadium slag, the crystallization and separation behaviors of V-spinel phase and Ti-spinel phase in the FeO-SiO 2 -V 2 O 3 -TiO 2 system as the main components of vanadium slag were investigated. The results indicated that the suitable temperatures for precipitating V-spinel phase and Ti-spinel phase were chosen as 1 723 K and 1 623 K, respectively. With introduction supergravity at the parameter of G = 700, T = 1 723 K and t = 10 minutes, the solid V-containing phase was intercepted by the filter to form the V-enriched slag, while the residual melt went through the filter into the lower crucible to form the Ti-containing slag. And the mass fraction of V 2 O 3 in the V-enriched slag reached about 32.98 wt% and that of TiO 2 in the Ti-containing slag reached about 19.41 wt%; the recovery ratios of V 2 O 3 and TiO 2 were about 86.50% and 76.80%, respectively. In addition, the Ti-spinel phase was further separated and concentrated in the Ti-enriched slag from the Ti-containing slag with the gravity coefficient G = 500 at 1 623 K for 10 minutes. The mass fraction and the recovery ratio of TiO 2 in the Ti-enriched slag could reach 30.83 wt% and 89.80%, respectively. In the whole process, the comprehensive recovery ratio of TiO 2 could reach 68.97%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Separation of Vanadium and Titanium Phase from the Vanadium Slag System Utilizing Supergravity

Huang

Liu

2021

ISIJ Int.

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Supergravity-enhanced liquation crystallization for metal recovery from waste printed circuit boards

Feng

Wang

Meng

et al. 2022

Chemical Engineering and Processing - Process Intensification

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Separation of V-bearing phase from the vanadium slag system utilizing supergravity

Huang

Liu

2020

Metall. Res. Technol.

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The crystallization and separation behaviors of the V-spinel phase in the FeO-SiO2-V2O3-TiO2 system as the main components of vanadium slag were investigated to effectively concentrate and separate vanadium from the vanadium slag. Fine V-spinel precipitates were transformed into large lumps and strip crystals by decreasing the temperature from 1773 K to 1723 K. Ti-spinel phases began to crystallize from the molten slag by further decreasing the temperature to 1673 K. In order to adequately precipitate a single V-spinel phase with suitable grain size in the crystals from the molten slag, the temperature was chosen as 1723 K. With introduction of supergravity technology, the Ti-containing slag melt went through the filter to form the Ti-containing slag, while V-spinel crystals were intercepted by the filter to form the V-enriched slag. Consequently, with G = 700 at 1723 K for 10 minutes, the mass fraction of V2O3 was increased from 17.00 wt% before separation to 32.98 wt% in the enriched slag; the recovery ratio of V2O3 reached about 86.50%. In addition, the mass fraction of TiO2 reached about 19.41 wt% in the Ti-containing slag, which could be recycled as a titanium-bearing material in the metallurgical industry.

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Separation of Non-metallic Inclusions from a Fe-Al-O Melt Using a Super-Gravity Field

Cited by 6 publications

References 32 publications

Separation of Vanadium and Titanium Phase from the Vanadium Slag System Utilizing Supergravity

Separation of Vanadium and Titanium Phase from the Vanadium Slag System Utilizing Supergravity

Supergravity-enhanced liquation crystallization for metal recovery from waste printed circuit boards

Separation of V-bearing phase from the vanadium slag system utilizing supergravity

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