Dust emission reduction during metal casting
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United States of America Patent
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Sep 29, 2015
Grant Date -
Nov 13, 2014
app pub date -
Sep 27, 2012
filing date -
Sep 28, 2011
priority date (Note) -
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Abstract
Dust emissions can be reduced in a metal or slag casting apparatus by providing an endless conveyor having a plurality of casting molds with upper open tops wherein the conveyor is arranged to move the casting molds in a first section from a casting station to a discharge station and in a second section back to the casting station. The method for reducing dust emissions includes (a) providing a casing forming a bottomless box over at least part of the first section of the conveyor, (b) injecting within the casing a gas on the surface of the mold with an angle configured to blow off loose, solid particles, formed at the surface of the metal, during early stages of the cooling down and to start the solidification of a superficial layer of metal or slag, and (c) extracting the gas and the solid particles by suction from within the casing.
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