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EP0628367A3 - Method of reclaiming used foundry sand. - Google Patents

Method of reclaiming used foundry sand. Download PDF

Info

Publication number
EP0628367A3
EP0628367A3 EP94108072A EP94108072A EP0628367A3 EP 0628367 A3 EP0628367 A3 EP 0628367A3 EP 94108072 A EP94108072 A EP 94108072A EP 94108072 A EP94108072 A EP 94108072A EP 0628367 A3 EP0628367 A3 EP 0628367A3
Authority
EP
European Patent Office
Prior art keywords
dust
rubbing apparatus
conveying device
rubbing
sand
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.)
Granted
Application number
EP94108072A
Other languages
German (de)
French (fr)
Other versions
EP0628367B1 (en
EP0628367A2 (en
Inventor
Norbert Ing Damm
Thomas Dr-Ing Parr
Tao Dr-Ing Wang
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.)
Badische Maschinenfabrik GmbH
Original Assignee
Badische Maschinenfabrik GmbH
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 Badische Maschinenfabrik GmbH filed Critical Badische Maschinenfabrik GmbH
Publication of EP0628367A2 publication Critical patent/EP0628367A2/en
Publication of EP0628367A3 publication Critical patent/EP0628367A3/en
Application granted granted Critical
Publication of EP0628367B1 publication Critical patent/EP0628367B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B22C5/18—Plants for preparing mould materials
    • 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
    • B22C5/10—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by dust separating

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

Used foundry sand is fed in batches to a rubbing apparatus which detaches the binder shell from the sand grain, is removed from the rubbing apparatus (19) by means of a conveying device into an intermediate container with a dust-removal device and is recirculated several times between the latter and the rubbing apparatus by means of a conveying device. To optimise process management, the rubbing (R), dust removal (E) and recirculation (U) steps of the process are combined to form a control module M and a plurality of control modules M1 to Mn are formed, these differing in the percentage of the nominal output of the individual stages (R), (E) and (U) of the process. The control modules M1 to Mn are stored in a control unit and the rubbing apparatus, the conveying device and the dust-removal device are driven by the control unit with a sequence of control modules selected in accordance with the quality of the used sand.
EP94108072A 1993-06-01 1994-05-26 Method of reclaiming used foundry sand Expired - Lifetime EP0628367B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4318136A DE4318136A1 (en) 1993-06-01 1993-06-01 Process for regenerating foundry old sands
DE4318136 1993-06-01

Publications (3)

Publication Number Publication Date
EP0628367A2 EP0628367A2 (en) 1994-12-14
EP0628367A3 true EP0628367A3 (en) 1995-04-26
EP0628367B1 EP0628367B1 (en) 1998-11-04

Family

ID=6489343

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108072A Expired - Lifetime EP0628367B1 (en) 1993-06-01 1994-05-26 Method of reclaiming used foundry sand

Country Status (3)

Country Link
EP (1) EP0628367B1 (en)
AT (1) ATE172902T1 (en)
DE (2) DE4318136A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075631B4 (en) * 2011-05-11 2021-10-28 Bayerische Motoren Werke Aktiengesellschaft Procedure for testing the quality of reclaimed sand
DE102011075630B4 (en) * 2011-05-11 2022-03-03 Bayerische Motoren Werke Aktiengesellschaft Procedure for testing the quality of regenerated sand

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU387778A1 (en) * 1971-05-31 1973-06-22 М. А. Осипов Оротуканский завод горного оборудовани INSTALLATION FOR DRY GRINNING REGENERATION
EP0343272A1 (en) * 1988-05-26 1989-11-29 Pohl Giessereitechnik Method of and installation for regeneration of returned sand of foundry
WO1993020964A1 (en) * 1992-04-10 1993-10-28 Dietmar Boenisch Foundry sand regenerating process and device
EP0580084A2 (en) * 1992-07-24 1994-01-26 Dietmar Prof. Dr.-Ing. Boenisch Apparatus for an method of reclaiming foundry sand
DE4237838A1 (en) * 1992-11-10 1994-05-11 Badische Maschf Gmbh Method and device for regenerating foundry sand

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU387778A1 (en) * 1971-05-31 1973-06-22 М. А. Осипов Оротуканский завод горного оборудовани INSTALLATION FOR DRY GRINNING REGENERATION
EP0343272A1 (en) * 1988-05-26 1989-11-29 Pohl Giessereitechnik Method of and installation for regeneration of returned sand of foundry
WO1993020964A1 (en) * 1992-04-10 1993-10-28 Dietmar Boenisch Foundry sand regenerating process and device
EP0580084A2 (en) * 1992-07-24 1994-01-26 Dietmar Prof. Dr.-Ing. Boenisch Apparatus for an method of reclaiming foundry sand
DE4237838A1 (en) * 1992-11-10 1994-05-11 Badische Maschf Gmbh Method and device for regenerating foundry sand

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 7412, Derwent World Patents Index; AN 74-22588V Ÿ12! *
WALTER STUZMANN ET AL.: "Ein- und mehrstufige Sandregenerieranlagen im Modulsystem- Anlagenkonzeption und Betriebsergebnisse", GIESSEREI 79 (1992) 3 FEBRUAR, NO 3, DüSSELDORF *

Also Published As

Publication number Publication date
DE4318136A1 (en) 1994-12-08
EP0628367B1 (en) 1998-11-04
DE59407204D1 (en) 1998-12-10
EP0628367A2 (en) 1994-12-14
ATE172902T1 (en) 1998-11-15

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