Settling of inclusions in top-cut solar grade silicon (SOG-SI) under electromagnetic field

Lucas Nana Wiredu Damoah, Lifeng Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Citations (Scopus)

Abstract

Increasing demand for Solar Grade Silicon (SoG-Si) due to rising interest in renewable energy has lead to increased SoG-Si Top - cut scraps generated from the multi-crystalline silicon making process. Due to the high cost of SoG-Si and the potential to use the top-cut scraps as feedstock material, there has been increased effort to develop cost effective and efficient technologies. As a result, several methods to recycle the top-cut scraps are currently been applied, and researched. These include settling under gravitation field, which is a slow process to be industrially applicable. Natural settling of inclusions by gravitational force is a slow process and not attractive to the industry. Recent experiments on Top-cut SoG-Si scrap under high frequency, high voltage, electromagnetic field showed that SiC inclusions settled within a short time to the bottom of the crucible and the characteristic rod-like morphologies of Si 3N 4 inclusions in SoG-Si were not detected. This study investigates the enhanced settling of SiC inclusions and the behavior of Si 3N 4 particles under the influence of high frequency, high voltage, electromagnetic field in Top-cut SoG-Si.

Original languageEnglish
Title of host publication3rd International Symposium on High-Temperature Metallurgical Processing - Held During the TMS 2012 Annual Meeting and Exhibition
Pages271-278
Number of pages8
Publication statusPublished - 2012
Externally publishedYes
Event3rd International Symposium on High-Temperature Metallurgical Processing - TMS 2012 Annual Meeting and Exhibition - Orlando, FL
Duration: 11 Mar 201215 Mar 2012

Publication series

NameTMS Annual Meeting

Conference

Conference3rd International Symposium on High-Temperature Metallurgical Processing - TMS 2012 Annual Meeting and Exhibition
Country/TerritoryUnited States
CityOrlando, FL
Period11/03/1215/03/12

Keywords

  • Electromagnetic
  • Inclusions
  • Settling
  • Silicon

Fingerprint

Dive into the research topics of 'Settling of inclusions in top-cut solar grade silicon (SOG-SI) under electromagnetic field'. Together they form a unique fingerprint.

Cite this