METHOD FOR PROTECTING THE VALVE OF A MOLTEN-METAL LADLE AND FACILITATING FREE OPENING THEREOF
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United States of America Patent
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app pub date -
Aug 3, 2010
filing date -
Aug 3, 2009
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Abstract
Spout-filling compositions and a method for protecting and facilitating free opening of a spout valve of a ladle are disclosed. The spout-filling compositions may comprise an iron-based ilmenite sand. More particularly, the compositions may comprise ilmenite sand in combination with a quartz and/or carbon black and/or chromite and zircon. The compositions described herein may be placed in a ladle to insulate the valve from molten metal.
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