ES2028707A6 - Drying used sand, before cleaning by attrition - Google Patents
Drying used sand, before cleaning by attritionInfo
- Publication number
- ES2028707A6 ES2028707A6 ES9100561A ES9100561A ES2028707A6 ES 2028707 A6 ES2028707 A6 ES 2028707A6 ES 9100561 A ES9100561 A ES 9100561A ES 9100561 A ES9100561 A ES 9100561A ES 2028707 A6 ES2028707 A6 ES 2028707A6
- Authority
- ES
- Spain
- Prior art keywords
- sand
- stress
- water content
- attrition
- before cleaning
- 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)
- Processing Of Solid Wastes (AREA)
- Treatment Of Sludge (AREA)
Abstract
A process is described for the recovery treatment of predominantly clay-bonded used foundry sand to allow its re-use in place of new sand. In such processes the sand grains are repeatedly accelerated and decelerated and are rubbed against one another by a combined impact stress and shearing stress so as to free the adherent shell from the sand cores and the shell material thus freed is removed pneumatically. According to the invention the process further comprises the step of setting the water content of the old sand before the stress treatment at most one per cent by weight. The low water content avoids the formation of lumps during the recovery process.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH749/90A CH682056A5 (en) | 1990-03-08 | 1990-03-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2028707A6 true ES2028707A6 (en) | 1992-07-01 |
Family
ID=4194306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES9100561A Expired - Fee Related ES2028707A6 (en) | 1990-03-08 | 1991-03-06 | Drying used sand, before cleaning by attrition |
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 |
| EP0041774B1 (en) * | 1980-06-05 | 1983-06-22 | Foseco International Limited | 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 |
| DE3400656A1 (en) * | 1984-01-11 | 1985-07-18 | Delta Engineering Beratung und Vermittlung Gesellschaft mbH, Irdning | Process for the regeneration of waste foundry sands |
| EP0149595B1 (en) * | 1984-01-11 | 1988-03-23 | KGT GIESSEREITECHNIK GmbH | Process and machine for regenerating used foundry sand |
| 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 |
| DE3873522D1 (en) * | 1988-05-26 | 1992-09-10 | Pohl Giessereitechnik | METHOD AND DEVICE FOR REGENERATING FOUNDRY SAND. |
| 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 AT AT0046891A patent/AT401244B/en not_active IP Right Cessation
- 1991-03-05 NZ NZ237328A patent/NZ237328A/en unknown
- 1991-03-06 BE BE9100211A patent/BE1006644A5/en not_active IP Right Cessation
- 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
- 1991-03-06 NL NL9100402A patent/NL9100402A/en not_active Application Discontinuation
- 1991-03-06 AU AU72675/91A patent/AU7267591A/en not_active Abandoned
- 1991-03-07 CA CA002037737A patent/CA2037737A1/en not_active Abandoned
- 1991-03-07 DK DK040791A patent/DK40791A/en not_active Application Discontinuation
- 1991-03-07 JP JP3065299A patent/JPH06134546A/en active Pending
- 1991-03-07 HU HU91743A patent/HU209909B/en not_active IP Right Cessation
- 1991-03-07 PL PL28933691A patent/PL289336A1/en unknown
- 1991-03-07 MX MX024815A patent/MX170860B/en unknown
- 1991-03-08 YU YU42391A patent/YU42391A/en unknown
- 1991-03-08 BR BR919100949A patent/BR9100949A/en active Search and Examination
- 1991-03-08 GB GB9104901A patent/GB2241658B/en not_active Expired - Fee Related
- 1991-03-08 IT ITMI910608A patent/IT1251543B/en active IP Right Grant
- 1991-03-08 PT PT96990A patent/PT96990A/en not_active Application Discontinuation
- 1991-03-08 ZA ZA911737A patent/ZA911737B/en unknown
- 1991-03-08 CS CS91610A patent/CS61091A2/en unknown
- 1991-03-08 FI FI911176A patent/FI911176A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| ATA46891A (en) | 1995-12-15 |
| DE4106736C2 (en) | 1995-02-02 |
| BE1006644A5 (en) | 1994-11-08 |
| IT1251543B (en) | 1995-05-17 |
| AU7267591A (en) | 1991-09-12 |
| FI911176A (en) | 1991-09-09 |
| BR9100949A (en) | 1991-11-05 |
| HU910743D0 (en) | 1991-09-30 |
| GB2241658B (en) | 1994-07-13 |
| SE9100672L (en) | 1991-09-09 |
| GB2241658A (en) | 1991-09-11 |
| ITMI910608A1 (en) | 1992-09-08 |
| GB9104901D0 (en) | 1991-04-24 |
| HUT56748A (en) | 1991-10-28 |
| NZ237328A (en) | 1993-03-26 |
| CA2037737A1 (en) | 1991-09-09 |
| YU42391A (en) | 1993-11-16 |
| DK40791D0 (en) | 1991-03-07 |
| PT96990A (en) | 1993-02-26 |
| CS61091A2 (en) | 1991-09-15 |
| SE9100672D0 (en) | 1991-03-06 |
| NL9100402A (en) | 1991-10-01 |
| HU209909B (en) | 1994-11-28 |
| FR2659255A1 (en) | 1991-09-13 |
| ZA911737B (en) | 1991-12-24 |
| PL289336A1 (en) | 1991-10-21 |
| JPH06134546A (en) | 1994-05-17 |
| DK40791A (en) | 1991-09-09 |
| DE4106736A1 (en) | 1991-09-12 |
| FR2659255B1 (en) | 1995-05-24 |
| MX170860B (en) | 1993-09-20 |
| FI911176A0 (en) | 1991-03-08 |
| ITMI910608A0 (en) | 1991-03-08 |
| AT401244B (en) | 1996-07-25 |
| CH682056A5 (en) | 1993-07-15 |
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| EP0041774B1 (en) | Sand reclamation | |
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| US3738415A (en) | Method of molding articles and reclaiming the foundry sand used | |
| CA2037736A1 (en) | Process for the regeneration treatment of predominantly clay-bonded casting old sand | |
| IT9022051A1 (en) | PROCEDURE FOR THE TREATMENT OF GROUND REGENERATION EXHAUSTED FROM FOUNDRY PREVIOUSLY LINKED TO CLAY | |
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| Weller | Method of Regenerating Used Foundry Sand Makes Used Sand as Good as New | |
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| Charmeau et al. | The Fabrication of Large Castings in Steel Foundries Over 40 Years: an Evolution Oriented Toward Quality | |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FD1A | Patent lapsed |
Effective date: 19990301 |