DE4106736C2 - Process for the regeneration treatment of old foundry sand - Google Patents
Process for the regeneration treatment of old foundry sandInfo
- Publication number
- DE4106736C2 DE4106736C2 DE4106736A DE4106736A DE4106736C2 DE 4106736 C2 DE4106736 C2 DE 4106736C2 DE 4106736 A DE4106736 A DE 4106736A DE 4106736 A DE4106736 A DE 4106736A DE 4106736 C2 DE4106736 C2 DE 4106736C2
- Authority
- DE
- Germany
- Prior art keywords
- sand
- regeneration treatment
- old
- foundry sand
- grains
- 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.)
- Expired - Fee Related
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
- B22C5/10—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)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Treatment Of Sludge (AREA)
- Processing Of Solid Wastes (AREA)
Description
Die vorliegende Erfindung betrifft ein Verfahren zur Regenerierbehandlung von überwiegend tongebundenem Gießerei-Altsand für dessen Wiederverwertung an Stelle von Neusand, wobei die Sandkörner wiederholt beschleunigt und abgebremst und durch kombinierte Schlag- und Scher beanspruchung aneinander gescheuert und dadurch von der auf den Sandkörnern haftenden Umhüllung aus Binder- und Zusatzstoffen unter dem Einsatz einer nach außen füh renden pneumatischen Entstaubungseinrichtung befreit werden.The present invention relates to a method for Regeneration treatment of predominantly clay-bound Old foundry sand for its recycling in place of new sand, the grains of sand repeatedly accelerating and braked and by combined impact and shear stress rubbed against each other and thereby by the coating of binder and Additives using an outside guide pneumatic dust removal device become.
Für die vollständige Befreiung der Sandkörner von der Um hüllung, ist es unbedingt notwendig, daß diese Umhüll ung in Staubform abgesaugt wird. Wenn der Staub nicht entfernt wird, wird die Schlag- und Scherbeanspruchung gedämpft und die Regenerierbehandlung stark beein trächtigt.For the complete release of the grains of sand from the um wrapping, it is imperative that this wrapping is sucked off in dust form. If the dust is not is removed, the impact and shear stress steamed and strongly affect the regeneration treatment is pregnant.
Trotz einer intensiven Absaugung des sich bildenden Staubes erreicht man das Ziel auch nicht wenn sich dabei kleine Knollen bilden. Man kann diese Knollen mittels ei nes Rührers zerschlagen, was aber erst nach einer ge wissen Zeit gelingt. Die Durchsatzleistung einer solchen Regenerierungsanlage wird dadurch gesenkt.Despite an intensive suction of the formed Dust does not reach the goal even when doing so form small tubers. You can egg these tubers by egg smashed a stirrer, but only after a certain know time succeeds. The throughput of such Regeneration plant is thereby lowered.
Ausgehend von diesem Stand der Technik liegt der vorlie genden Erfindung die Aufgabe zu Grunde, ein Verfahren der eingangs genannten Art zu schaffen, welches eine gute Altsandregenerierung zuläßt, und die Leistung der Alt sandregenerierungsanlage konstant aufrecht hält.Based on this state of the art, this is available underlying invention the task of a method of to create the kind mentioned above, which is a good one Used sand regeneration, and the performance of the old keeps sand regeneration plant constantly upright.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Wassergehalt des Altsandes vor der Regenerierbe handlung auf höchstens ein Gewichtsprozent Wasser ein gestellt wird.This object is achieved in that the water content of the old sand in front of the regeneration site a maximum of one percent by weight of water is provided.
Die Tatsache, daß sich die Sand- bzw. die Staubknollen durch einen Rührer nach einer bestimmten Zeit zerschla gen lassen, deutet darauf hin, daß die mechanische Wir kung in eine Wärmewirkung übergeht. Den Sand- bzw. Staub knollen so zugeführte Wärme ist nicht ökonomisch, da es sich um elektrische Energie handelt.The fact that the sand or dust bulbs crushed by a stirrer after a certain time leave indicates that the mechanical We effect turns into a heat effect. The sand or dust bulbous heat so supplied is not economical as it is electrical energy.
Es ist deshalb vorteilhafter, den Altsand vorher zu trocknen, wobei der Wassergehalt vor der Regenerierbe handlung bei höchstens einem Gewichtsprozent und we niger liegen soll. Unter diesen Umständen kommt es zu keiner Knollenbildung, und die Altsandregenerierungs anlage behält ihre volle Leistung.It is therefore more advantageous to close the old sand beforehand dry, taking the water content before the regeneration act at a maximum of one percent by weight and we niger should lie. In these circumstances it happens no tuber formation, and the old sand regeneration plant maintains its full performance.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH749/90A CH682056A5 (en) | 1990-03-08 | 1990-03-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE4106736A1 DE4106736A1 (en) | 1991-09-12 |
| DE4106736C2 true DE4106736C2 (en) | 1995-02-02 |
Family
ID=4194306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4106736A Expired - Fee Related DE4106736C2 (en) | 1990-03-08 | 1991-03-02 | Process for the regeneration treatment of old foundry sand |
Country Status (24)
| Country | Link |
|---|---|
| JP (1) | JPH06134546A (en) |
| AT (1) | AT401244B (en) |
| AU (1) | AU7267591A (en) |
| BE (1) | BE1006644A5 (en) |
| BR (1) | BR9100949A (en) |
| CA (1) | CA2037737A1 (en) |
| CH (1) | CH682056A5 (en) |
| CS (1) | CS61091A2 (en) |
| DE (1) | DE4106736C2 (en) |
| DK (1) | DK40791A (en) |
| ES (1) | ES2028707A6 (en) |
| FI (1) | FI911176A (en) |
| FR (1) | FR2659255B1 (en) |
| GB (1) | GB2241658B (en) |
| HU (1) | HU209909B (en) |
| IT (1) | IT1251543B (en) |
| MX (1) | MX170860B (en) |
| NL (1) | NL9100402A (en) |
| NZ (1) | NZ237328A (en) |
| PL (1) | PL289336A1 (en) |
| PT (1) | PT96990A (en) |
| SE (1) | SE9100672L (en) |
| YU (1) | YU42391A (en) |
| ZA (1) | ZA911737B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105170901B (en) * | 2015-10-26 | 2017-05-17 | 中车长江车辆有限公司 | Large-size cast steel wet type clay sand treatment system and sand treatment method |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB172221A (en) * | 1920-12-06 | 1921-12-08 | William Beard Lake | An improved method and apparatus for treating, cleaning, or preparing sand for casting moulds |
| NL6411744A (en) * | 1964-10-09 | 1966-04-12 | ||
| US3312403A (en) * | 1964-12-31 | 1967-04-04 | Zifferer Lothar Robert | Machine and process for reclaiming foundry sand |
| US3826476A (en) * | 1968-11-15 | 1974-07-30 | Eirich G Maschf | Apparatus for moistening mixable materials |
| FR2115097B1 (en) * | 1970-11-30 | 1975-04-18 | Sigma Applic Produits | |
| CH631643A5 (en) * | 1978-04-14 | 1982-08-31 | Fischer Ag Georg | METHOD FOR REGENERATING OLD FOUNDRY SAND AND DEVICE FOR CARRYING OUT THE METHOD AND PRODUCT OF THE METHOD. |
| GB2047588A (en) * | 1979-04-06 | 1980-12-03 | Distillers Co Carbon Dioxide | Reclamation of foundry sand |
| DE3160476D1 (en) * | 1980-06-05 | 1983-07-28 | Foseco Int | Sand reclamation |
| DE3103030C2 (en) * | 1981-01-30 | 1984-05-03 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Process for the extraction of foundry sand from used foundry sand |
| JPS58128247A (en) * | 1982-01-28 | 1983-07-30 | Nippon Chuzo Kk | Reconditioning method of old sand |
| JPS58128246A (en) * | 1982-01-28 | 1983-07-30 | Nippon Chuzo Kk | Reconditioning method of old sand |
| JPS59215243A (en) * | 1983-05-23 | 1984-12-05 | Nippon Kokan Keishiyu Kk | Reconditioning method of molding sand |
| EP0149595B1 (en) * | 1984-01-11 | 1988-03-23 | KGT GIESSEREITECHNIK GmbH | Process and machine for regenerating used foundry sand |
| DE3400656A1 (en) * | 1984-01-11 | 1985-07-18 | Delta Engineering Beratung und Vermittlung Gesellschaft mbH, Irdning | Process for the regeneration of waste foundry sands |
| DE3400648A1 (en) * | 1984-01-11 | 1985-07-18 | Delta Engineering Beratung und Vermittlung Gesellschaft mbH, Irdning | DEVICE AND METHOD FOR REGENERATING FOUNDRY SCRAP |
| US4709862A (en) * | 1987-01-30 | 1987-12-01 | Leidel Dieter S | Method of reclaiming green sand |
| ES2034025T3 (en) * | 1988-05-26 | 1993-04-01 | Pohl Giessereitechnik | PROCEDURE FOR THE RECOVERY OF USED SAND FROM FOUNDRY AND ITS CORRESPONDING EQUIPMENT. |
| CH679135A5 (en) * | 1989-12-06 | 1991-12-31 | Fischer Ag Georg | |
| CH681283A5 (en) * | 1990-08-16 | 1993-02-26 | Fischer Ag Georg |
-
1990
- 1990-03-08 CH CH749/90A patent/CH682056A5/de not_active IP Right Cessation
-
1991
- 1991-03-02 DE DE4106736A patent/DE4106736C2/en not_active Expired - Fee Related
- 1991-03-04 FR FR9102539A patent/FR2659255B1/en not_active Expired - Fee Related
- 1991-03-05 NZ NZ237328A patent/NZ237328A/en unknown
- 1991-03-05 AT AT0046891A patent/AT401244B/en not_active IP Right Cessation
- 1991-03-06 AU AU72675/91A patent/AU7267591A/en not_active Abandoned
- 1991-03-06 BE BE9100211A patent/BE1006644A5/en not_active IP Right Cessation
- 1991-03-06 NL NL9100402A patent/NL9100402A/en not_active Application Discontinuation
- 1991-03-06 ES ES9100561A patent/ES2028707A6/en not_active Expired - Fee Related
- 1991-03-06 SE SE9100672A patent/SE9100672L/en not_active Application Discontinuation
- 1991-03-07 HU HU91743A patent/HU209909B/en not_active IP Right Cessation
- 1991-03-07 JP JP3065299A patent/JPH06134546A/en active Pending
- 1991-03-07 CA CA002037737A patent/CA2037737A1/en not_active Abandoned
- 1991-03-07 PL PL28933691A patent/PL289336A1/en unknown
- 1991-03-07 DK DK040791A patent/DK40791A/en not_active Application Discontinuation
- 1991-03-07 MX MX024815A patent/MX170860B/en unknown
- 1991-03-08 IT ITMI910608A patent/IT1251543B/en active IP Right Grant
- 1991-03-08 ZA ZA911737A patent/ZA911737B/en unknown
- 1991-03-08 PT PT96990A patent/PT96990A/en not_active Application Discontinuation
- 1991-03-08 GB GB9104901A patent/GB2241658B/en not_active Expired - Fee Related
- 1991-03-08 YU YU42391A patent/YU42391A/en unknown
- 1991-03-08 FI FI911176A patent/FI911176A/en not_active Application Discontinuation
- 1991-03-08 BR BR919100949A patent/BR9100949A/en active Search and Examination
- 1991-03-08 CS CS91610A patent/CS61091A2/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2659255A1 (en) | 1991-09-13 |
| HU910743D0 (en) | 1991-09-30 |
| DE4106736A1 (en) | 1991-09-12 |
| HUT56748A (en) | 1991-10-28 |
| GB2241658B (en) | 1994-07-13 |
| GB9104901D0 (en) | 1991-04-24 |
| YU42391A (en) | 1993-11-16 |
| JPH06134546A (en) | 1994-05-17 |
| FR2659255B1 (en) | 1995-05-24 |
| BR9100949A (en) | 1991-11-05 |
| SE9100672D0 (en) | 1991-03-06 |
| AT401244B (en) | 1996-07-25 |
| FI911176A (en) | 1991-09-09 |
| ITMI910608A1 (en) | 1992-09-08 |
| BE1006644A5 (en) | 1994-11-08 |
| ES2028707A6 (en) | 1992-07-01 |
| NL9100402A (en) | 1991-10-01 |
| NZ237328A (en) | 1993-03-26 |
| SE9100672L (en) | 1991-09-09 |
| DK40791A (en) | 1991-09-09 |
| PT96990A (en) | 1993-02-26 |
| ITMI910608A0 (en) | 1991-03-08 |
| AU7267591A (en) | 1991-09-12 |
| FI911176A0 (en) | 1991-03-08 |
| MX170860B (en) | 1993-09-20 |
| ATA46891A (en) | 1995-12-15 |
| HU209909B (en) | 1994-11-28 |
| CH682056A5 (en) | 1993-07-15 |
| ZA911737B (en) | 1991-12-24 |
| IT1251543B (en) | 1995-05-17 |
| CA2037737A1 (en) | 1991-09-09 |
| CS61091A2 (en) | 1991-09-15 |
| PL289336A1 (en) | 1991-10-21 |
| DK40791D0 (en) | 1991-03-07 |
| GB2241658A (en) | 1991-09-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |