Anti-oxidative agent for molten metal, method of preparing and method of using thereof
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United States of America Patent
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Dec 13, 2011
Grant Date -
Jul 22, 2010
app pub date -
Mar 29, 2010
filing date -
Jan 14, 2008
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Abstract
An anti-oxidative agent for molten metal containing at least nonylphenol polyoxyethylene ether, organic amine, phosphoric acid, and phytic acid. A method of preparing the anti-oxidative agent for molten metal, by a) heating an organic amine to between 60 and 100° C., adding a nonylphenol polyoxyethylene ether, and stirring for between 3 and 5 min to yield a mixture; and b) cooling the mixture to between 30 and 100° C., and adding phosphoric acid and phytic acid and stirring for between 10 and 15 min. The anti-oxidative agent for molten metal has no flash point and spreads quickly on the liquid surface, providing high reduction efficiency at lost cost.
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