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Title: Control of carbon balance in a silicon smelting furnace

Abstract

The present invention is a process for the carbothermic reduction of silicon dioxide to form elemental silicon. Carbon balance of the process is assessed by measuring the amount of carbon monoxide evolved in offgas exiting the furnace. A ratio of the amount of carbon monoxide evolved and the amount of silicon dioxide added to the furnace is determined. Based on this ratio, the carbon balance of the furnace can be determined and carbon feed can be adjusted to maintain the furnace in carbon balance.

Inventors:
 [1];  [1];  [1];  [1]
  1. (Midland, MI)
Issue Date:
Research Org.:
DOW CORNING CORP
OSTI Identifier:
868614
Patent Number(s):
5174982
Application Number:
07/626,151
Assignee:
Dow Corning Corporation (Midland, MI) SNL
DOE Contract Number:  
AC04-87ID12624
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
control; carbon; balance; silicon; smelting; furnace; process; carbothermic; reduction; dioxide; form; elemental; assessed; measuring; amount; monoxide; evolved; offgas; exiting; ratio; added; determined; based; feed; adjusted; maintain; carbothermic reduction; carbon monoxide; silicon dioxide; gas exit; carbon balance; elemental silicon; gas exiting; melting furnace; silicon smelting; /423/75/204/

Citation Formats

Dosaj, Vishu D., Haines, Cathryn M., May, James B., and Oleson, John D. Control of carbon balance in a silicon smelting furnace. United States: N. p., 1992. Web.
Dosaj, Vishu D., Haines, Cathryn M., May, James B., & Oleson, John D. Control of carbon balance in a silicon smelting furnace. United States.
Dosaj, Vishu D., Haines, Cathryn M., May, James B., and Oleson, John D. Tue . "Control of carbon balance in a silicon smelting furnace". United States. https://www.osti.gov/servlets/purl/868614.
@article{osti_868614,
title = {Control of carbon balance in a silicon smelting furnace},
author = {Dosaj, Vishu D. and Haines, Cathryn M. and May, James B. and Oleson, John D.},
abstractNote = {The present invention is a process for the carbothermic reduction of silicon dioxide to form elemental silicon. Carbon balance of the process is assessed by measuring the amount of carbon monoxide evolved in offgas exiting the furnace. A ratio of the amount of carbon monoxide evolved and the amount of silicon dioxide added to the furnace is determined. Based on this ratio, the carbon balance of the furnace can be determined and carbon feed can be adjusted to maintain the furnace in carbon balance.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {12}
}

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