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EP0465778A3 - Process for reclaiming used foundry sand - Google Patents

Process for reclaiming used foundry sand Download PDF

Info

Publication number
EP0465778A3
EP0465778A3 EP19910106513 EP91106513A EP0465778A3 EP 0465778 A3 EP0465778 A3 EP 0465778A3 EP 19910106513 EP19910106513 EP 19910106513 EP 91106513 A EP91106513 A EP 91106513A EP 0465778 A3 EP0465778 A3 EP 0465778A3
Authority
EP
European Patent Office
Prior art keywords
foundry sand
air
gas mixture
process temperature
used foundry
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
EP19910106513
Other languages
German (de)
Other versions
EP0465778A2 (en
EP0465778B1 (en
Inventor
Ekart Dr. Dipl.-Ing. Schaarschmidt
Horst Dipl.-Ing. Rademacher
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.)
Fried Krupp AG Hoesch Krupp
Kuenkel Wagner Service und Vertriebs GmbH
Original Assignee
Kuenkel Wagner GmbH and Co KG
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
Priority claimed from DE4100520A external-priority patent/DE4100520C2/en
Application filed by Kuenkel Wagner GmbH and Co KG filed Critical Kuenkel Wagner GmbH and Co KG
Publication of EP0465778A2 publication Critical patent/EP0465778A2/en
Publication of EP0465778A3 publication Critical patent/EP0465778A3/en
Application granted granted Critical
Publication of EP0465778B1 publication Critical patent/EP0465778B1/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

Landscapes

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

Abstract

Although an elevated process temperature is used for reprocessing used sands having high clay-like portions, the upper limit thereof is fixed such that chamottization of the sand and combustion of organic binder components do not occur. The air-gas mixture is circulated in a drier and a mechanical reprocessing step arranged downstream thereof and heated to process temperature by utilizing thermal energy obtained by branching off and burning part of the air-gas mixture from the circulation.
EP91106513A 1990-06-28 1991-04-23 Process for reclaiming used foundry sand Expired - Lifetime EP0465778B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4020576 1990-06-28
DE4020576 1990-06-28
DE4100520A DE4100520C2 (en) 1990-06-28 1991-01-10 Process for regenerating old foundry sands
DE4100520 1991-01-10

Publications (3)

Publication Number Publication Date
EP0465778A2 EP0465778A2 (en) 1992-01-15
EP0465778A3 true EP0465778A3 (en) 1993-04-14
EP0465778B1 EP0465778B1 (en) 1997-10-01

Family

ID=25894545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91106513A Expired - Lifetime EP0465778B1 (en) 1990-06-28 1991-04-23 Process for reclaiming used foundry sand

Country Status (4)

Country Link
US (1) US5233765A (en)
EP (1) EP0465778B1 (en)
JP (1) JPH0596340A (en)
AT (1) ATE158731T1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681283A5 (en) * 1990-08-16 1993-02-26 Fischer Ag Georg
DE4212097A1 (en) * 1992-04-10 1993-10-14 Boenisch Dietmar Method and device for regenerating foundry sand
DE4224493A1 (en) * 1992-07-24 1994-01-27 Boenisch Dietmar Regenerating process and equipment for foundry sand
US7097871B2 (en) * 2003-11-19 2006-08-29 Soylink Deflavored vegetable powders, methods of making them, and systems for vegetable milling
DE102005029742B3 (en) * 2005-06-24 2006-08-24 Klein Anlagenbau Ag 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
DE102005041519A1 (en) * 2005-08-31 2007-03-01 Klein Anlagenbau Ag Treating foundry mold material containing core sand and binder, to regenerate the sand for reuse, by subdividing the sand while still hot into stream for wet regeneration and stream for use as drying heat source
US20070160728A1 (en) * 2005-10-13 2007-07-12 Noel Rudie Gluten-free food products including deflavored bean powder
US7908765B2 (en) * 2006-12-22 2011-03-22 Collette Nv Continuous granulating and drying apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054288A1 (en) * 1980-12-16 1982-06-23 Cosworth Research And Development Limited Method of and apparatus for treating granular material
EP0149595A2 (en) * 1984-01-11 1985-07-24 KGT GIESSEREITECHNIK GmbH Process and machine for regenerating used foundry sand
EP0265707B1 (en) * 1986-10-27 1992-06-03 Förder- und Anlagentechnik GmbH Method of and device for thermo-mechanical regeneration of bulk goods especially foundry returned sand

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4177952A (en) * 1978-04-24 1979-12-11 National Engineering Company Impact scrubber
DE3110578A1 (en) * 1981-03-18 1982-09-30 Hermann 2105 Seevetal Jacob DEVICE FOR CLEANING FOUNDRY SAND
US4415444A (en) * 1981-10-08 1983-11-15 General Kinematics Corporation Air cooling system for a vibratory sand reclaiming apparatus
DE3400656A1 (en) * 1984-01-11 1985-07-18 Delta Engineering Beratung und Vermittlung Gesellschaft mbH, Irdning Process for the regeneration of waste foundry sands
DE3825361A1 (en) * 1988-07-26 1990-02-08 Hermann Jacob Method and installation for regenerating mixtures of used foundry sand

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0054288A1 (en) * 1980-12-16 1982-06-23 Cosworth Research And Development Limited Method of and apparatus for treating granular material
EP0149595A2 (en) * 1984-01-11 1985-07-24 KGT GIESSEREITECHNIK GmbH Process and machine for regenerating used foundry sand
EP0265707B1 (en) * 1986-10-27 1992-06-03 Förder- und Anlagentechnik GmbH Method of and device for thermo-mechanical regeneration of bulk goods especially foundry returned sand

Also Published As

Publication number Publication date
ATE158731T1 (en) 1997-10-15
EP0465778A2 (en) 1992-01-15
US5233765A (en) 1993-08-10
EP0465778B1 (en) 1997-10-01
JPH0596340A (en) 1993-04-20

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