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Systems and Methods For Manufacturing Cast Silicon

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
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Apparatus and methods are provided for manufacturing cast silicon. The systems and methods include a plurality of inductive coils configured to form a space to contain molten silicon, and configured to generate an electromagnetic field when an electrical current is supplied to the inductive coils to support the molten silicon so that a gap is maintained in a portion of the space between at least one substantially vertical wall of the molten silicon and at least one of the inductive coils, and when a portion of the molten silicon solidifies into a solid silicon ingot as the molten silicon is cooled by the cooling device, a concave liquid/solid interface is formed between the molten silicon and the solid silicon ingot.
Stoddard, Nathan G. (Gettysburg, PA), Clark, Roger F. (Knoxville, MD)
BP Corporation North America Inc. (Warrenville IL)
12/ 638,023
December 15, 2009
[0002] This invention was made with U.S. Government support under National Renewable Energy Laboratory (NREL) Subcontract No. ZDO-2-30628-03 under Department of Energy (DOE) Contract No. DE-AC36-98GO10337, awarded by DOE. The U.S. Government has certain rights in this invention.