Production of foundry premix composition
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United States of America Patent
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Oct 10, 2023
Grant Date -
Feb 10, 2022
app pub date -
Sep 27, 2019
filing date -
Sep 28, 2018
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Abstract
A method of preparing a unique foundry premix composition that has a low bulk density of 30-45 lbs/ft3 and contains fine particles with an average particle size of 85-100 μm is described. The unique foundry premix composition is produced by using specially designed assemblies of mechanical equipment with improved efficiency so that the premix can be prepared at a site closer to a foundry. As a result, increase in premix density caused by handling and shipping across a long distance from a traditional premix manufacturing facility to a foundry can be suppressed; transportation cost can be saved; and safety would be of less concern. The use of the foundry premix composition to prepare a sand molding medium for casting molded articles is also described.
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