EP 2692460 A1 20140205 - Particulate refractory compositions for use in the manufacture of foundry moulds and cores, methods of preparing same and corresponding uses
Title (en)
Particulate refractory compositions for use in the manufacture of foundry moulds and cores, methods of preparing same and corresponding uses
Title (de)
Teilchenförmige Feuerfestmaterialzusammensetzungen zur Verwendung bei der Herstellung von Gussformen und -kernen, Verfahren zu ihrer Herstellung und entsprechende Verwendungen
Title (fr)
Compositions réfractaires particulaires destinées à être utilisées dans la fabrication de moules et de noyaux de fonderie, procédés de préparation et utilisations correspondantes
Publication
Application
Priority
EP 12178533 A 20120730
Abstract (en)
The invention relates to a method of preparing a particulate refractory composition for use in the manufacture of foundry moulds and cores from spent foundry moulds or cores formed of refractory material and an alkaline binder containing alkali metal ions, the method comprising the following steps: providing broken material from spent foundry moulds or cores or preparing broken material from spent foundry moulds or cores, mixing the broken material with an additive comprising or consisting of one or more particulate constituents selected from the group consisting of aluminum hydroxide, synthetic zeolites and natural zeolites and subjecting the mixture to a heat treatment at a temperature in the range of from 400 to 750 °C. Furthermore the invention relates to particulate refractory composition for use in the manufacture of foundry moulds and cores.
IPC 8 full level
B22C 1/18 (2006.01); B22C 1/22 (2006.01); B22C 5/18 (2006.01); B22D 29/00 (2006.01)
CPC (source: EP)
B22C 1/18 (2013.01); B22C 1/188 (2013.01); B22C 1/22 (2013.01); B22C 1/2246 (2013.01); B22C 1/2253 (2013.01); B22D 29/00 (2013.01); B22D 29/003 (2013.01)
Citation (applicant)
- EP 0085512 B1 19850327
- US 4980394 A 19901225 - LEMON PETER H R B [GB], et al
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- WO 9405448 A1 19940317 - ASHLAND CHEMICAL LTD [GB], et al
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- WO 2005107975 A1 20051117 - ASHLAND UK LTD [GB], et al
- EP 0556955 B1 19960313 - FOSECO INT [GB]
- US 6286580 B1 20010911 - WARD STUART P [GB], et al
- GB 2005001482 W 20050419
Citation (search report)
- [AD] WO 2005107975 A1 20051117 - ASHLAND UK LTD [GB], et al
- [A] EP 0644006 A1 19950322 - SUED CHEMIE AG [DE]
- [A] JP 2001205388 A 20010731 - GUNEI KAGAKU KOGYO KK
- [AD] WO 9426439 A1 19941124 - BORDEN UK LTD [GB], et al
- [A] LEIDEL D S: "THE INFLUENCE OF SAND AND BINDERS ON RECLAIMABILITY", FOUNDRY TRADE JOURNAL, INSTITUTE OF CAST METALS ENGINEERS, WEST BROMWICH, GB, vol. 168, no. 3497, 1 August 1994 (1994-08-01), XP000548242, ISSN: 0015-9042
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2692460 A1 20140205; EP 2692460 B1 20150225; TW 201412431 A 20140401; WO 2014019726 A1 20140206
DOCDB simple family (application)
EP 12178533 A 20120730; EP 2013059731 W 20130510; TW 102116964 A 20130513