Simultaneous recycling of Si and Ti from diamond wire saw silicon powder and Ti-bearing blast furnace slag via reduction smelting : An investigation of the effects of refractories on recycling

Copyright © 2022 Elsevier Ltd. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 157(2023) vom: 15. Feb., Seite 36-46
1. Verfasser: Zhang, Yakun (VerfasserIn)
Weitere Verfasser: Lei, Yun, Ma, Wenhui, Ren, Yongsheng
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Extraction and Separation Refractories Si reduction Si-Ti alloys Waste recycling Silicon Z4152N8IUI Powders Titanium mehr... D1JT611TNE Magnesium Oxide 3A3U0GI71G Aluminum CPD4NFA903 Diamond 7782-40-3 Alloys Aluminum Oxide LMI26O6933
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100 1 |a Zhang, Yakun  |e verfasserin  |4 aut 
245 1 0 |a Simultaneous recycling of Si and Ti from diamond wire saw silicon powder and Ti-bearing blast furnace slag via reduction smelting  |b An investigation of the effects of refractories on recycling 
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520 |a The industrial wastes diamond wire saw silicon powder (DWSSP) and Ti-bearing blast furnace slag (TBFS) are important Si and Ti secondary resources, respectively. During the industrial application of recycling DWSSP and TBFS via reduction smelting, the refractories can dissolve into the molten slag, which can change the composition of the slag and influence the extraction of Si and Ti. Unfortunately, few studies on the reduction smelting of DWSSP and TBFS related to refractories have been reported, making such studies urgently needed. Therefore, the main purpose of this work was to reveal the dissolution mechanism of refractories (alumina and magnesia bricks) and the effect of refractory dissolution on Si-Ti alloy preparation. The results show that during the reduction smelting, the dissolution of alumina and magnesia bricks changed from direct dissolution into the molten slag to indirect dissolution, and the amount of magnesia bricks dissolved was less than that of aluminum bricks. Al3+ (aluminum brick) entering the slag could replace Si4+ in [SinO2n] to form [AlxSin-xO2n]x-, increasing the viscosity of the slag. The O2- (magnesia brick) entering the slag could dissociate [AlxSin-xO2n]x-, decreasing the viscosity of the slag. Therefore, compared with alumina bricks, magnesia bricks can promote slag-alloy separation and improve the extraction ratios of Ti and Si. In the case of magnesia bricks, the maximum reduction ratio of TiO2 was 98.4 %, and the maximum extraction ratio of Si was 95.8 %. This work provides essential experimental data for the Si-Ti alloys prepared via recycling DWSSP and TBFS 
650 4 |a Journal Article 
650 4 |a Extraction and Separation 
650 4 |a Refractories 
650 4 |a Si reduction 
650 4 |a Si-Ti alloys 
650 4 |a Waste recycling 
650 7 |a Silicon  |2 NLM 
650 7 |a Z4152N8IUI  |2 NLM 
650 7 |a Powders  |2 NLM 
650 7 |a Titanium  |2 NLM 
650 7 |a D1JT611TNE  |2 NLM 
650 7 |a Magnesium Oxide  |2 NLM 
650 7 |a 3A3U0GI71G  |2 NLM 
650 7 |a Aluminum  |2 NLM 
650 7 |a CPD4NFA903  |2 NLM 
650 7 |a Diamond  |2 NLM 
650 7 |a 7782-40-3  |2 NLM 
650 7 |a Alloys  |2 NLM 
650 7 |a Aluminum Oxide  |2 NLM 
650 7 |a LMI26O6933  |2 NLM 
700 1 |a Lei, Yun  |e verfasserin  |4 aut 
700 1 |a Ma, Wenhui  |e verfasserin  |4 aut 
700 1 |a Ren, Yongsheng  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Waste management (New York, N.Y.)  |d 1999  |g 157(2023) vom: 15. Feb., Seite 36-46  |w (DE-627)NLM098197061  |x 1879-2456  |7 nnas 
773 1 8 |g volume:157  |g year:2023  |g day:15  |g month:02  |g pages:36-46 
856 4 0 |u http://dx.doi.org/10.1016/j.wasman.2022.12.008  |3 Volltext 
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