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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:
; ; ;
Issue Date:
OSTI Identifier:
7046870
Patent Number(s):
5174982 A
Application Number:
PPN: US 7-626151
Assignee:
Dow Corning Corp., Midland, MI (United States) PTO; EDB-94-088630
DOE Contract Number:  
AC04-87ID12624
Resource Type:
Patent
Resource Relation:
Patent File Date: 12 Dec 1990
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; SILICON; PRODUCTION; SILICON OXIDES; REDUCTION; SMELTERS; PROCESS CONTROL; ON-LINE MEASUREMENT SYSTEMS; CHALCOGENIDES; CHEMICAL REACTIONS; CONTROL; ELEMENTS; ON-LINE SYSTEMS; OXIDES; OXYGEN COMPOUNDS; SEMIMETALS; SILICON COMPOUNDS; 320303* - Energy Conservation, Consumption, & Utilization- Industrial & Agricultural Processes- Equipment & Processes

Citation Formats

Dosaj, V.D., Haines, C.M., May, J.B., and Oleson, J.D. Control of carbon balance in a silicon smelting furnace. United States: N. p., 1992. Web.
Dosaj, V.D., Haines, C.M., May, J.B., & Oleson, J.D. Control of carbon balance in a silicon smelting furnace. United States.
Dosaj, V.D., Haines, C.M., May, J.B., and Oleson, J.D. Tue . "Control of carbon balance in a silicon smelting furnace". United States.
@article{osti_7046870,
title = {Control of carbon balance in a silicon smelting furnace},
author = {Dosaj, V.D. and Haines, C.M. and May, J.B. and Oleson, J.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}
}