EP0257446A3 - Process and apparatus for wet-regenerating used foundry sand - Google Patents

Process and apparatus for wet-regenerating used foundry sand Download PDF

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Publication number
EP0257446A3
EP0257446A3 EP87111654A EP87111654A EP0257446A3 EP 0257446 A3 EP0257446 A3 EP 0257446A3 EP 87111654 A EP87111654 A EP 87111654A EP 87111654 A EP87111654 A EP 87111654A EP 0257446 A3 EP0257446 A3 EP 0257446A3
Authority
EP
European Patent Office
Prior art keywords
mixture
washer
attraction
washed
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Withdrawn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
EP87111654A
Other languages
German (de)
French (fr)
Other versions
EP0257446A2 (en
Inventor
Heinz Sagmeister
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.)
BMD Badische Maschinenfabrik Durlach GmbH
Original Assignee
BMD Badische Maschinenfabrik Durlach 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 BMD Badische Maschinenfabrik Durlach GmbH filed Critical BMD Badische Maschinenfabrik Durlach GmbH
Publication of EP0257446A2 publication Critical patent/EP0257446A2/en
Publication of EP0257446A3 publication Critical patent/EP0257446A3/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Withdrawn legal-status Critical Current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
    • B22C5/18—Plants for preparing mould materials
    • B22C5/185—Plants for preparing mould materials comprising a wet reclamation step

Abstract

Gießerei-Altsande, insbesondere tongebundene Altsande, werden auf nassem Wege dadurch regeneriert, daß der mit Wasser versetzte Altsand vorentschlämmt, das Altsand/Wasser-Gemisch in mehreren hintereinander geschalteten Attritionsstufen einer Reibwaschanlage behandelt, das Gemisch jeder Attritionsstufe abgezogen und entschlämmt und das entschlämmte Gemisch der jeweils nächsten Attritionsstufe zugeführt wird und schließlich der erhaltene Regenerat-Sand entwässert und getrocknet wird. Eine Vorrichtung zur Durchführung des vorgenannten Verfahrens besteht aus wenigstens zwei Reibwaschanlagen (7, 9) mit höchstens drei Attritionszellen und je einem Klassierer (6, 8, 10) zwischen zwei aufeinander folgenden Reibwaschanlagen, denen das in der vorangehenden Reibwaschanlage anfallende Gemisch zum Entschlämmen zugeführt wird und aus dem das entschlämmte Gemisch der nächsten Reibwaschanlage zugeführt wird. Foundry sands, in particular clay-bound sands, are opened regenerated wet way in that the with water treated old sand, the old sand / water mixture in several successive levels of one Rubbing washer treated, the mixture of each attraction level deducted and washed up and the washed up mixture of the next attraction level and finally the obtained regenerated sand is dewatered and dried. An apparatus for performing the aforementioned method exists with at least two friction washers (7, 9) a maximum of three attraction cells and one classifier each (6, 8, 10) between two successive friction washers, the the resulting mixture in the previous washer for Desludging is fed and from which the desludged Mixture is fed to the next washer.

EP87111654A 1986-08-21 1987-08-12 Process and apparatus for wet-regenerating used foundry sand Withdrawn EP0257446A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT224686A AT387921B (en) 1986-08-21 1986-08-21 METHOD AND DEVICE FOR THE WET REGENERATION OF CLAY-TIED FOUNDRY SAND
AT2246/86 1986-08-21

Publications (2)

Publication Number Publication Date
EP0257446A2 EP0257446A2 (en) 1988-03-02
EP0257446A3 true EP0257446A3 (en) 1988-05-11

Family

ID=3530744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87111654A Withdrawn EP0257446A3 (en) 1986-08-21 1987-08-12 Process and apparatus for wet-regenerating used foundry sand

Country Status (2)

Country Link
EP (1) EP0257446A3 (en)
AT (1) AT387921B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4190731C1 (en) * 1990-03-20 1993-02-11 Kuettner Gmbh & Co. Kg, 4300 Essen, De
DE4321297C2 (en) * 1993-06-26 1999-06-17 Krc Umwelttechnik Gmbh Process for the wet regeneration of granular bulk goods contaminated with contaminants and pollutants
DE4321296A1 (en) * 1993-06-26 1995-01-05 Noell Abfall & Energietech Process and plant for the wet regeneration of granular bulk goods contaminated with impurities and pollutants
WO2017127996A1 (en) * 2016-01-25 2017-08-03 苏州明志科技有限公司 One-stop core-making unit and installation method therefor
CN114130949A (en) * 2021-12-10 2022-03-04 南阳仁创再生资源有限公司 Regeneration method for reducing ignition loss of washed casting ceramsite sand

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783511A (en) * 1954-02-01 1957-03-05 Hydro Blast Corp Method for reclaiming used foundry sand
DE3019096A1 (en) * 1979-06-06 1981-02-05 Foundry Design Corp Europ METHOD AND SYSTEM FOR WET SANDING AND CLEANING OF CASTING PIECES

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2783511A (en) * 1954-02-01 1957-03-05 Hydro Blast Corp Method for reclaiming used foundry sand
DE3019096A1 (en) * 1979-06-06 1981-02-05 Foundry Design Corp Europ METHOD AND SYSTEM FOR WET SANDING AND CLEANING OF CASTING PIECES

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GIEBEREI, Jahrgang 59, Nr. 20, 5. Oktober 1972, Chikago, USA HENRY W. ZIMNAWODA "Verfahren zur Sandruckgewinnung" seiten 593-599 *
GIEBEREI-RUNDSCHAU, Jahrgang 31, Nr. 4, April 1984, Wien H. SAGMEISTER "Versuche zur Regenerierung von Bentonitgebundenen Altformstoffen fur die Kernherstellung" seiten 11-16 & Gieberei-Praxis, Nr. 12, 22. Juni 1984, Fachverlag Schiele & Schon GmbH, Berlin H. SAGMEISTER "Versuche zur Regenerierung von Bentonitgebundenen Altformstoffen fur die Kernherstellung" seiten 206-211 *

Also Published As

Publication number Publication date
ATA224686A (en) 1988-09-15
EP0257446A2 (en) 1988-03-02
AT387921B (en) 1989-04-10

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Inventor name: SAGMEISTER, HEINZ