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Title: Low cost routes to high purity silicon and derivatives thereof

Abstract

The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount of the impurities; changing the ratio of carbon to silica; and reducing the silica to a high purity silicon (e.g., to photovoltaic silicon).

Inventors:
; ; ;
Issue Date:
Research Org.:
Mayaterials, Inc. (Ann Arbor, MI)
Sponsoring Org.:
USDOE
OSTI Identifier:
1086793
Patent Number(s):
8475758
Application Number:
13/057,058
Assignee:
Mayaterials, Inc. (Ann Arbor, MI)
Patent Classifications (CPCs):
C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
DOE Contract Number:  
FG36-08G018009
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
09 BIOMASS FUELS

Citation Formats

Laine, Richard M, Krug, David James, Marchal, Julien Claudius, and Mccolm, Andrew Stewart. Low cost routes to high purity silicon and derivatives thereof. United States: N. p., 2013. Web.
Laine, Richard M, Krug, David James, Marchal, Julien Claudius, & Mccolm, Andrew Stewart. Low cost routes to high purity silicon and derivatives thereof. United States.
Laine, Richard M, Krug, David James, Marchal, Julien Claudius, and Mccolm, Andrew Stewart. Tue . "Low cost routes to high purity silicon and derivatives thereof". United States. https://www.osti.gov/servlets/purl/1086793.
@article{osti_1086793,
title = {Low cost routes to high purity silicon and derivatives thereof},
author = {Laine, Richard M and Krug, David James and Marchal, Julien Claudius and Mccolm, Andrew Stewart},
abstractNote = {The present invention is directed to a method for providing an agricultural waste product having amorphous silica, carbon, and impurities; extracting from the agricultural waste product an amount of the impurities; changing the ratio of carbon to silica; and reducing the silica to a high purity silicon (e.g., to photovoltaic silicon).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 02 00:00:00 EDT 2013},
month = {Tue Jul 02 00:00:00 EDT 2013}
}

Works referenced in this record:

Method for producing solar cell-grade silicon from rice hulls
patent, July 1980


Purification of Rice Hulls as a Source of Solar Grade Silicon for Solar Cells
journal, April 1982


Rice Hulls as a Raw Material for Producing Silicon
journal, July 1984


Method for producing high purity Si for solar cells
patent, July 1984


Effect of thermal and chemical treatments on carbon and silica contents in rice husk
journal, July 1987


Silicon-Based Materials from Rice Husks and Their Applications
journal, December 2001


Extended arc furnace and process for melting particulate charge therein
patent, February 1977