Device for igniting an alumino-thermal composition, crucible containing same and related methods
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United States of America Patent
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Dec 4, 2012
Grant Date -
Jul 1, 2010
app pub date -
Feb 18, 2008
filing date -
Mar 6, 2007
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Abstract
The invention relates to a device for igniting an aluminothermic composition, characterized in that it comprises an electric resistor for connecting two electrodes and to be supplied by an electric current source of in order to generate heat by a Joule effect, said electric resistor being exposed to a medium comprising oxygen and carbon so that the temperature rise of the medium by the resistor results in the formation of carbon monoxide, and then in an exothermal reaction of the latter with oxygen, thus generating a flame capable of igniting of the aluminothermic composition.
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