Recycling of silicon kerf loss derived from diamond-wire saw cutting process to prepare silicon nitride

Jin, Xing; Kong, Jian; Zhou, Xuetong; Xing, Pengfei; Zhuang, Yanxin

doi:10.1016/j.jclepro.2019.119163

Cited by 32 publications

(9 citation statements)

References 39 publications

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“…Before the nitriding and sintering experiments, DWSSW was purified by 12 wt% H 2 SO 4 (Lai Bo science & trade Co., LTD. Shenyang, Chian) to remove the metal and their oxide impurities. The phase composition and morphology of DWSSW after acid leaching were already investigated in our previous study 18 . Fe 2 O 3 powder (Lai Bo science & trade Co., LTD. Shenyang, Chian) with ∼1.1 μm was used as the additive.…”

Section: Methodsmentioning

confidence: 99%

Effect of Fe₂O₃ additive on the preparation of Si₃N₄−Si₂N₂O composite ceramics via diamond‐wire saw silicon waste

Fang

Sun

et al. 2023

Int J Applied Ceramic Tech

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In this study, Si3N4−Si2N2O composite ceramics were prepared through a two‐step combination of the direct nitriding method and spark plasma sintering method with diamond‐wire saw silicon waste in the photovoltaic industry as raw material. The whole holding time at the constant temperature of the preparing process only lasts 35 min, in which the nitriding time only takes 30 min and the sintering time only takes 5 min. The effects of the Fe2O3 additive on the nitriding and sintering process were investigated in detail. The results show that the Fe2O3 additive accelerates the nitriding process by promoting the formation and diffusion of the gas phase and reducing the apparent activation energy of the reaction between the gas phase containing silicon and N2. Meanwhile, the Fe2O3 additive also promotes the sintering process by lowering the eutectic temperature of the SiO2−Al2O3 and the SiO2−Y2O3 binary system. The optimal technical parameters follow the nitriding temperature of 1400°C, the nitriding time of 30 min, the sintering temperature of 1800°C, and the sintering time of 5 min. The Si3N4−Si2N2O composite ceramic prepared under the above conditions exhibits good performance with an apparent porosity of 2.7%, Vickers hardness of 16.54 GPa, and fracture toughness of 4.1 MPa·m1/2.

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Section: Methodsmentioning

confidence: 99%

Effect of Fe₂O₃ additive on the preparation of Si₃N₄−Si₂N₂O composite ceramics via diamond‐wire saw silicon waste

Fang

Sun

et al. 2023

Int J Applied Ceramic Tech

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“…Moreover, improper disposal of these cutting fluids would cause water pollution and soil pollution for the diameter of Si waste is just several micrometers. , Extensive research studies have reported recycling the Si waste to prepare crystalline polysilicon applied in solar cells again. − However, it often needs a complicated process and a high cost because the purity of Si must be upgraded to 99.9999% to meet the demand of solar cells. Thus, looking for more economical and green routes to recycle silicon waste has attracted widespread attention …”

Section: Introductionmentioning

confidence: 99%

Constructing a Sheet-Stacked Si/C Composite by Recycling Photovoltaic Si Waste for Li-Ion Batteries

Chen

Duan

Zhong

et al. 2022

Ind. Eng. Chem. Res.

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Massive silicon (Si) waste is generated during the diamond wire cutting process in the photovoltaic industry. Recycling the Si waste to prepare anode materials for lithium-ion batteries is an important way to realize its value-increment utilization. However, controlled preparation of a waste-derived Si/C anode with superior performance still remains a great challenge. Herein, focusing on the pristine sheet-like morphology of Si waste from diamond wire cutting, Mg reduction is employed to reduce the size in the lamellar direction to form a sheet-stacked structure. Combined with CO 2 -derived carbon coating, a sheet-stacked Si/C composite anode with a porous structure is successfully constructed via subtle optimization of the Mg reduction time. The optimized Si/C electrode can release a remaining capacity of 693 mA h g −1 after 300 cycles at 1.0 A g −1 . This work provides an efficient way for recycling Si waste as anode materials for LIBs.

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“…Since the SCW is mainly composed of Si, a small amount of SiO 2 , and metal oxides, the reported methods were basically devoted to the separation of Si and SiO 2 to obtain a high-purity Si. [9][10][11][12] For example, Maeda et al attempted to extract Si nanoparticles from SCW with a bead milling method. 13 De Sousa et al adopted a two-stage thermal plasma method to purify the SCW to obtain pure Si.…”

Section: Introductionmentioning

confidence: 99%

“…Since the SCW is mainly composed of Si, a small amount of SiO 2 , and metal oxides, the reported methods were basically devoted to the separation of Si and SiO 2 to obtain a high‐purity Si 9–12 . For example, Maeda et al.…”

Section: Introductionmentioning

confidence: 99%

Effects and function mechanism of Fe‐containing additives on SiC synthesis with silicon cutting waste

Gao

Jiang

Xing

2021

Int J Applied Ceramic Tech

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With the rapid development of the photovoltaic industry, a great amount of silicon cutting waste (SCW) are being generated, which lead to a heavy environmental burden as well as a high cost of the photovoltaic industry. In this paper, the effects of Fe-containing additives and their function mechanism on recycling SCW to synthesize high-purity SiC were studied. The results show that Fecontaining additives, including Fe, Fe 2 O 3 , and Fe(NO 3 ) 3 , have obvious effect on recycling SCW to synthesize SiC. And Fe(NO 3 ) 3 additive achieves the best effect.Fe(NO 3 ) 3 can effectively destroy the SiO 2 film wrapped on the Si particles, so that expose the inner Si to C at lower temperatures than that of the reaction between C and SiO 2 . Besides, Fe(NO 3 ) 3 additive can effectively reduce the activation energy both for Si and C reactions and SiO 2 and C reactions, and contribute to the transport of the raw materials as well as the dissolution and precipitation of Si and C due to the formation of the FeSi melt at low temperatures. The optimal processing conditions are determined as Fe(NO 3 ) 3 addition of 1-3 wt.% and smelting temperature of 1200-1300°C.

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Recycling of silicon kerf loss derived from diamond-wire saw cutting process to prepare silicon nitride

Cited by 32 publications

References 39 publications

Effect of Fe₂O₃ additive on the preparation of Si₃N₄−Si₂N₂O composite ceramics via diamond‐wire saw silicon waste

Effect of Fe₂O₃ additive on the preparation of Si₃N₄−Si₂N₂O composite ceramics via diamond‐wire saw silicon waste

Constructing a Sheet-Stacked Si/C Composite by Recycling Photovoltaic Si Waste for Li-Ion Batteries

Effects and function mechanism of Fe‐containing additives on SiC synthesis with silicon cutting waste

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Recycling of silicon kerf loss derived from diamond-wire saw cutting process to prepare silicon nitride

Cited by 32 publications

References 39 publications

Effect of Fe2O3 additive on the preparation of Si3N4−Si2N2O composite ceramics via diamond‐wire saw silicon waste

Effect of Fe2O3 additive on the preparation of Si3N4−Si2N2O composite ceramics via diamond‐wire saw silicon waste

Constructing a Sheet-Stacked Si/C Composite by Recycling Photovoltaic Si Waste for Li-Ion Batteries

Effects and function mechanism of Fe‐containing additives on SiC synthesis with silicon cutting waste

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Effect of Fe₂O₃ additive on the preparation of Si₃N₄−Si₂N₂O composite ceramics via diamond‐wire saw silicon waste

Effect of Fe₂O₃ additive on the preparation of Si₃N₄−Si₂N₂O composite ceramics via diamond‐wire saw silicon waste