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Gas-lift pumps for flowing and purifying molten silicon

United States Patent

February 23, 2016
View the Complete Patent at the US Patent & Trademark Office
The embodiments herein relate to a sheet production apparatus. A vessel is configured to hold a melt of a material and a cooling plate is disposed proximate the melt. This cooling plate configured to form a sheet of the material on the melt. A pump is used. In one instance, this pump includes a gas source and a conduit in fluid communication with the gas source. In another instance, this pump injects a gas into a melt. The gas can raise the melt or provide momentum to the melt.
Kellerman; Peter L. (Essex, MA), Carlson; Frederick (Potsdam, NY)
Varian Semiconductor Equipment Associates, Inc. (Gloucester, MA)
13/ 039,789
March 3, 2011
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The U.S. Government has a paid-up license in this invention and the right in limited circumstances to require the patent owner to license others on reasonable terms as provided for by the terms of contract number DE-EE0000595 awarded by the U.S. Department of Energy.