Separation of Si and SiC microparticles of solar grade silicon cutting slurry by micropore membrane

Suning Liu, Kai Huang, Hongmin Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Recovery of silicon particles from the cutting slurry for the manufacturing of solar grade silicon is very important to recycle this kind of special resource. The challenge is to separate the silicon particles from the mixed abrasive particles which contain SiC. Various methods such as sedimentation, centrifugation, and flotation have been conducted, while in present work, a simple and effective novel method was proposed to study the separation of Si and coexisting SiC particles in the cutting slurry. The new process is based on the size difference between the two kinds of microparticles. And the membranes with the different pore sizes of 1μm, 2 μm, 3μm and 5μm were used to test the pass ratio and separation efficiency of the suspension. Results shows that the effective separation of Si and SiC microparticles was obtained under the optimal conditions, and indicating great potential of practical enrichment of Si from the coexisting abrasive particles.

Original languageEnglish
Title of host publicationEnergy Technology 2014
Subtitle of host publicationCarbon Dioxide Management and Other Technologies - Held During TMS 2014 143rd Annual Meeting and Exhibition
PublisherMinerals, Metals and Materials Society
Pages321-329
Number of pages9
ISBN (Print)9781118888209
Publication statusPublished - 2014 Jan 1
Externally publishedYes
EventEnergy Technology 2014: Carbon Dioxide Management and Other Technologies - TMS 2014 143rd Annual Meeting and Exhibition - San Diego, CA, United States
Duration: 2014 Feb 162014 Feb 20

Publication series

NameTMS Annual Meeting

Other

OtherEnergy Technology 2014: Carbon Dioxide Management and Other Technologies - TMS 2014 143rd Annual Meeting and Exhibition
CountryUnited States
CitySan Diego, CA
Period14/2/1614/2/20

Keywords

  • Micropore membrane
  • Silicon
  • Silicon cutting slurry

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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