EP1541257A3 - Device for regenerating foundry sand - Google Patents

Device for regenerating foundry sand Download PDF

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Publication number
EP1541257A3
EP1541257A3 EP04028400A EP04028400A EP1541257A3 EP 1541257 A3 EP1541257 A3 EP 1541257A3 EP 04028400 A EP04028400 A EP 04028400A EP 04028400 A EP04028400 A EP 04028400A EP 1541257 A3 EP1541257 A3 EP 1541257A3
Authority
EP
European Patent Office
Prior art keywords
sand
foundry sand
additives
grains
crushed
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Withdrawn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
EP04028400A
Other languages
German (de)
French (fr)
Other versions
EP1541257A2 (en
Inventor
Jörg Häring
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1541257A2 publication Critical patent/EP1541257A2/en
Publication of EP1541257A3 publication Critical patent/EP1541257A3/en
Withdrawn legal-status Critical Current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
    • B22C5/04—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
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C7/00—Crushing or disintegrating by disc mills
    • B02C7/02—Crushing or disintegrating by disc mills with coaxial discs
    • B02C7/08—Crushing or disintegrating by disc mills with coaxial discs with vertical axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Crushing And Grinding (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

Gebrauchter Giessereisand, Formsand und ganz besonders Kernsand wird beim Regenerieren von den Zusatzstoffen befreit. Die Sandkörner werden durch trockene, mechanische Bearbeitung insbesondere von den irreversiblen und nicht löslichen Zusatzstoffen getrennt. Der gebrauchte Formsand muss zuerst abgekühlt und nach bekannten Verfahren zertrümmert und zerkleinert werden. Nun erfolgt das eigentliche Trennen der Bindemittelhaut, das heisst der verfestigten Zusatzstoffe von den Sandkörnern. Dies erfolgt erfindungsgemäss mit einer Mühle mit zwei einander gegenüberliegenden Mahlscheiben (21, 22) mit einer vertikalen Rotationsachse (20). Zwischen beiden Mahlscheiben (21, 22) ist ein schmaler Mahlspalt (25) vorhanden.

Figure 00000001
Used foundry sand, foundry sand and especially core sand is removed from the additives during regeneration. The grains of sand are separated by dry, mechanical processing in particular from the irreversible and non-soluble additives. The used foundry sand must first be cooled and crushed and crushed by known methods. Now, the actual separation of the binder skin, that is, the solidified additives of the grains of sand. This is done according to the invention with a mill with two grinding discs (21, 22) opposite one another with a vertical axis of rotation (20). Between the two grinding discs (21, 22) a narrow grinding gap (25) is present.
Figure 00000001
EP04028400A 2003-12-13 2004-12-01 Device for regenerating foundry sand Withdrawn EP1541257A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003158416 DE10358416B3 (en) 2003-12-13 2003-12-13 Device for regenerating foundry sand comprises a breaker consisting of a fixed grinding plate and a rotating grinding disk with a vertical axis of rotation
DE10358416 2003-12-13

Publications (2)

Publication Number Publication Date
EP1541257A2 EP1541257A2 (en) 2005-06-15
EP1541257A3 true EP1541257A3 (en) 2005-10-05

Family

ID=34399711

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04028400A Withdrawn EP1541257A3 (en) 2003-12-13 2004-12-01 Device for regenerating foundry sand

Country Status (2)

Country Link
EP (1) EP1541257A3 (en)
DE (1) DE10358416B3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MD4094B1 (en) * 2009-05-04 2011-02-28 Михаил ЧЕМЫРТАН Grain milling device
CN102794390B (en) * 2012-07-23 2015-09-23 机械工业第四设计研究院 A kind of (sand) reclaimer
CN105945219B (en) * 2016-06-27 2019-01-22 苏州欣苏诚铸造机械有限公司 Rubbing regenerating device
CN110640133A (en) * 2019-11-05 2020-01-03 烟台乐泰汽车配件有限公司 Casting process of automobile brake disc and used sand recovery system
CN113231143B (en) * 2021-05-10 2022-08-09 重庆市平易粮油有限公司 Edible oil production is with high-efficient grinder
CN114210413A (en) * 2021-12-06 2022-03-22 河南省康华药业股份有限公司 Device for extracting active ingredients of radix aucklandiae shunqi pill medicine and preparation method and application thereof

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE577496C (en) * 1931-12-29 1933-06-01 Ley Maschf W Undercut grinding
GB737021A (en) * 1952-03-15 1955-09-21 Herbert Alfred Merges Crushing machine with grinding discs moving relatively to each other
GB1229631A (en) * 1967-03-29 1971-04-28
US4930708A (en) * 1989-06-23 1990-06-05 Chen Chi Shiang Grinding apparatus
US5330265A (en) * 1993-08-16 1994-07-19 Hartley Controls Corporation Apparatus and apparatus for mixing and cooling molding sand
US5836523A (en) * 1997-03-10 1998-11-17 Johnson; Norman W. Apparatus and method for reducing material
WO1999059932A1 (en) * 1998-05-21 1999-11-25 Hiromi Yamamoto Cement grinder
DE10343602A1 (en) * 2003-09-20 2005-04-14 Schmid, Andreas, Dr.-Ing. M.Sc. Apparatus and method for treating a medium such as sewage, sewage sludge or the like

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2115097B1 (en) * 1970-11-30 1975-04-18 Sigma Applic Produits
CH572773A5 (en) * 1974-06-07 1976-02-27 Wyhlen Ag Eisenbau Recovery of used, cold-bonded resin sand - using ball-mill linked to air sifter to obtain max. recovery
US4050635A (en) * 1976-08-19 1977-09-27 Whirl-Air-Flow Corporation Method and apparatus for reclaiming sand
DD138516A1 (en) * 1978-08-29 1979-11-07 Werner Tilch PROCESS FOR THE PREPARATION OF RAW TONES AND RAW BENTONITES

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE577496C (en) * 1931-12-29 1933-06-01 Ley Maschf W Undercut grinding
GB737021A (en) * 1952-03-15 1955-09-21 Herbert Alfred Merges Crushing machine with grinding discs moving relatively to each other
GB1229631A (en) * 1967-03-29 1971-04-28
US4930708A (en) * 1989-06-23 1990-06-05 Chen Chi Shiang Grinding apparatus
US5330265A (en) * 1993-08-16 1994-07-19 Hartley Controls Corporation Apparatus and apparatus for mixing and cooling molding sand
US5836523A (en) * 1997-03-10 1998-11-17 Johnson; Norman W. Apparatus and method for reducing material
WO1999059932A1 (en) * 1998-05-21 1999-11-25 Hiromi Yamamoto Cement grinder
DE10343602A1 (en) * 2003-09-20 2005-04-14 Schmid, Andreas, Dr.-Ing. M.Sc. Apparatus and method for treating a medium such as sewage, sewage sludge or the like

Also Published As

Publication number Publication date
DE10358416B3 (en) 2005-04-28
EP1541257A2 (en) 2005-06-15

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