METAL DROSS CONFINEMENT UNIT AND ASSOCIATED METHOD
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United States of America Patent
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Issued Date -
May 23, 2013
app pub date -
Jul 15, 2011
filing date -
Jul 16, 2010
priority date (Note) -
Abandoned
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Abstract
The present document describes a method and confinement unit for stopping a chemical reaction involving hot metal dross and a gas in the surrounding environment. The method comprises transferring the hot metal dross in a dross pan and placing the dross pan with the metal dross therein in the gastight chamber. Then, the dross pan is sealed with the hot metal dross therein into a gastight chamber of a fixed interior volume. The chemical reaction occurring inside the gastight chamber depletes a limited amount of gas present inside the gastight chamber, thereby stopping once the gas is completely depleted. The gastight chamber is shaped and sealed to withstand a pressure differential created by the depleting of the gas in the fixed interior volume, until the hot dross is cooled and the chemical reaction has stopped.
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