Method for the production of a core sand and/or molding sand for casting purposes
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United States of America Patent
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Oct 16, 2007
Grant Date -
Jul 13, 2006
app pub date -
Jun 11, 2004
filing date -
Jun 12, 2003
priority date (Note) -
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Abstract
A method for producing a core sand and/or molding sand for casting purposes mixes a basic granular mineral molding material such as silica sand with an additive based on an organic or inorganic component, a binding agent being optionally added. The additive is coarsely ground prior to the mixing process, more than 50 percent by weight of the grains having a minimum size of approximately 0.05 mm.
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