金刚石线锯硅浆废硅分离研究：表面活性剂对分离性能的影响

IF 4.6 2区工程技术 Q2 ENGINEERING, CHEMICAL

Powder Technology Pub Date : 2025-06-11 DOI:10.1016/j.powtec.2025.121239

Yongze Zhu , Shicong Yang , Keqiang Xie , Kuixian Wei , Wenhui Ma

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引用次数: 0

摘要

金刚石线锯硅浆（DWSSS）废料分离速度慢，回收率低。因此，为了提高硅在DWSSS中的分离率和回收率，本研究考察了5种表面活性剂对DWSSS分离过程的影响。结果表明，十六烷基三甲基溴化铵（CTAB）是五种表面活性剂中最有效的表面活性剂。在5%的投加量下，硅的分离率由0.9 × 10−3 mL/（s × cm2）提高到3.6 × 10−3 mL/(s × cm2)，回收率由61%提高到85%。吸附行为和表面性质的研究表明，在CTAB吸附作用下，硅颗粒的电荷由负电荷变为正电荷。此外，CTAB降低了表面张力，提高了分离效率。中试实验进一步验证了CTAB促进DWSSS中硅分离的可行性，回收率达到98%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Study on silicon separation from diamond wire saw silicon slurry waste: Effect of surfactant on separation performance

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Study on silicon separation from diamond wire saw silicon slurry waste: Effect of surfactant on separation performance

The separation speed of diamond wire saw silicon slurry (DWSSS) waste is slow and the recovery rate is low. Therefore, to enhance the separation rate and recovery rate of silicon in DWSSS, this study investigates the effects of five surfactants on the DWSSS separation process. The results demonstrated that cetyltrimethylammonium bromide (CTAB) emerged as the most effective surfactant among the five surfactants in this study. At the dosage of 5 %, elevating the silicon separation rate from 0.9 × 10⁻³ mL/(s × cm²) to 3.6 × 10⁻³ mL/(s × cm²), while simultaneously boosting the recovery rate from 61 % to 85 %. The study of adsorption behavior and surface properties showed that the charge of the silicon particle changed from negative to positive under the effect of CTAB adsorption. Furthermore, the CTAB reduced the surface tension and improving the separation efficiency. The feasibility of CTAB in promoting silicon separation from DWSSS was further validated by the pilot experiment with a recovery rate of 98 %.

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来源期刊

Powder Technology 工程技术-工程：化工

CiteScore

9.90

自引率

15.40%

发文量

1047

审稿时长

46 days

期刊介绍： Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests: Formation and synthesis of particles by precipitation and other methods. Modification of particles by agglomeration, coating, comminution and attrition. Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces). Packing, failure, flow and permeability of assemblies of particles. Particle-particle interactions and suspension rheology. Handling and processing operations such as slurry flow, fluidization, pneumatic conveying. Interactions between particles and their environment, including delivery of particulate products to the body. Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters. For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.