Method for producing refractory composite particles and feeder elements for the foundry industry, corresponding feeder elements and uses

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United States of America Patent

PATENT NO 10919086
APP PUB NO 20180345356A1
SERIAL NO

15780838

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Abstract

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A method for producing a feeder element is described. The method includes (a) producing composite particles having a particle size of less than 2 mm in a matrix encapsulation method with the following steps: (a1) producing droplets of a suspension from at least (i) one or more refractory substances, (ii) one or more of fillers having a bulk density in the range from 10 to 350 g/L, expandants, and pyrolysable fillers, (iii) as continuous phase, a solidifiable liquid, (a2) solidifying the droplets with the refractory substance(s) and density-reducing substance(s) are encapsulated therein, (a3) treating the hardened droplets to form composite particles, (b) mixing the composite particles with a binder and, optionally, further constituents to give a feeder composition, (c) shaping and curing the feeder composition to give a feeder element. Also described are a method for producing refractory composite particles and the use of the composite particles.

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Patent Owner(s)

Patent OwnerAddress
HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG40549 DÜSSELDORF

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hübert, Jürgen Langenhagen, DE 10 10
Lehmann, Sandra Potsdam, DE 12 5
Lieber, Hermann Langenhagen, DE 10 10
Riemann, Klaus Wunstorf, DE 11 4
Zimmer, Nils Garbsen, DE 11 4

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