EP1745872A3 - Process for handling foundry moulding materials - Google Patents

Process for handling foundry moulding materials Download PDF

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Publication number
EP1745872A3
EP1745872A3 EP06012822A EP06012822A EP1745872A3 EP 1745872 A3 EP1745872 A3 EP 1745872A3 EP 06012822 A EP06012822 A EP 06012822A EP 06012822 A EP06012822 A EP 06012822A EP 1745872 A3 EP1745872 A3 EP 1745872A3
Authority
EP
European Patent Office
Prior art keywords
binder
core sand
sand
regenerated
fed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06012822A
Other languages
German (de)
French (fr)
Other versions
EP1745872A2 (en
Inventor
Bernd Federhen
Heinz Schmidt
Markus Jendrock
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Klein Anlagenbau AG
Original Assignee
Klein Anlagenbau AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Klein Anlagenbau AG filed Critical Klein Anlagenbau AG
Publication of EP1745872A2 publication Critical patent/EP1745872A2/en
Publication of EP1745872A3 publication Critical patent/EP1745872A3/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/06—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sieving or magnetic separating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/04—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by grinding, blending, mixing, kneading, or stirring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
    • B22C5/085—Cooling or drying the sand together with the castings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C5/00—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose
    • B22C5/18—Plants for preparing mould materials
    • B22C5/185—Plants for preparing mould materials comprising a wet reclamation step

Abstract

Bei einem Verfahren zum Behandeln von Kernsand und Bindemittel enthaltenden Gießereiformstoffen wird der mit anorganischem/anorganischen Bindemittel/n gebundene Kernsand nach einem Gießvorgang von dabei entstandenen Gussstücken trocken getrennt, und stückige Teile werden trocken zerkleinert. Der Kernsand wird auf eine vorgegebene Korngröße abgesiebt, und unerwünschte Feinteile werden entfernt, wonach der durch Feuchteentzug ausgehärtete Kernsand in zwei Teilströme (S1, S2) unterteilt sowie der eine Teilstrom einem Zwischenlager zugeführt und der andere regeneriert wird. Der zu regenerierende Teilstrom (S2) wird einem Reaktor mit Flüssigkeit zugeführt und der eingebrachte Sand behandelt, bis die Kornoberfläche ausreichend von Binderresten und Produkten des Gussvorganges gereinigt ist. Jener Flüssigkeit -- insbesondere Wasser -- werden Zusätze beigegeben, beispielsweise Natronlauge bei Wasserglasbinder.

Figure imgaf001
In a method for treating foundry mold materials containing core sand and binder, the core sand bonded with inorganic / inorganic binder (s) is dry-separated after casting of resulting castings, and pieces are dry-shredded. The core sand is screened to a predetermined grain size, and unwanted fines are removed, after which the hardened by dehumidification core sand into two streams (S 1 , S 2 ) divided and fed a partial flow to a temporary storage and the other is regenerated. The partial stream to be regenerated (S 2 ) is fed to a reactor with liquid and the introduced sand is treated until the grain surface is sufficiently cleaned of binder residues and products of the casting process. The liquid - especially water - additives are added, for example, sodium hydroxide in water glass binder.
Figure imgaf001
EP06012822A 2005-06-24 2006-06-22 Process for handling foundry moulding materials Withdrawn EP1745872A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510029742 DE102005029742B3 (en) 2005-06-24 2005-06-24 Treating foundry molding material containing core sand and inorganic binder, to regenerate the core sand, by crushing, screening, wet-regenerating part of product and recombining with remainder

Publications (2)

Publication Number Publication Date
EP1745872A2 EP1745872A2 (en) 2007-01-24
EP1745872A3 true EP1745872A3 (en) 2009-03-11

Family

ID=36776456

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06012822A Withdrawn EP1745872A3 (en) 2005-06-24 2006-06-22 Process for handling foundry moulding materials

Country Status (2)

Country Link
EP (1) EP1745872A3 (en)
DE (1) DE102005029742B3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008149A1 (en) 2007-02-19 2008-08-21 Ashland-Südchemie-Kernfest GmbH Thermal regeneration of foundry sand
DE102012011384A1 (en) * 2012-06-11 2013-12-12 DEANTEC GmbH Apparatus for regenerating inorganically bound foundry sands
EP3202927B1 (en) 2016-02-08 2018-03-28 Klein Anlagenbau AG Method of and device for regeneration of foundry sand
TR201608569A2 (en) * 2016-06-21 2017-01-23 Hema Enduestri Anonim Sirketi RECOVERY METHOD OF WASTE CASTING SAND

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445436A2 (en) * 1990-03-05 1991-09-11 Alb. Klein GmbH & Co. KG Apparatus for mixing foundry moulding materials
EP0465778A2 (en) * 1990-06-28 1992-01-15 Fried. Krupp AG Hoesch-Krupp Process for reclaiming used foundry sand
DE4126976C1 (en) * 1991-08-14 1993-01-07 Kuenkel-Wagner Gmbh & Co Kg, 3220 Alfeld, De
DE4321297A1 (en) * 1993-06-26 1995-01-05 Noell Abfall & Energietech Process for the wet regeneration of bulk goods contaminated with impurities and pollutants
DE19631788A1 (en) * 1996-08-07 1998-02-12 Inutec Ingenieure Fuer Ind Umw Apparatus for thermal treatment of moulding sand

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681434A5 (en) * 1990-01-31 1993-03-31 Fischer Ag Georg
WO2001064371A1 (en) * 2000-03-02 2001-09-07 Sintokogio, Ltd. Collected sand processing method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0445436A2 (en) * 1990-03-05 1991-09-11 Alb. Klein GmbH & Co. KG Apparatus for mixing foundry moulding materials
EP0465778A2 (en) * 1990-06-28 1992-01-15 Fried. Krupp AG Hoesch-Krupp Process for reclaiming used foundry sand
DE4126976C1 (en) * 1991-08-14 1993-01-07 Kuenkel-Wagner Gmbh & Co Kg, 3220 Alfeld, De
DE4321297A1 (en) * 1993-06-26 1995-01-05 Noell Abfall & Energietech Process for the wet regeneration of bulk goods contaminated with impurities and pollutants
DE19631788A1 (en) * 1996-08-07 1998-02-12 Inutec Ingenieure Fuer Ind Umw Apparatus for thermal treatment of moulding sand

Also Published As

Publication number Publication date
EP1745872A2 (en) 2007-01-24
DE102005029742B3 (en) 2006-08-24

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