PT96990A - USED FOUNDATION SAND RECOVERY TREATMENT PROCESS PREDOMINATELY CONNECTED WITH CLAY - Google Patents
USED FOUNDATION SAND RECOVERY TREATMENT PROCESS PREDOMINATELY CONNECTED WITH CLAY Download PDFInfo
- Publication number
- PT96990A PT96990A PT96990A PT9699091A PT96990A PT 96990 A PT96990 A PT 96990A PT 96990 A PT96990 A PT 96990A PT 9699091 A PT9699091 A PT 9699091A PT 96990 A PT96990 A PT 96990A
- Authority
- PT
- Portugal
- Prior art keywords
- sand
- clay
- predominately
- treatment process
- recovery treatment
- Prior art date
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)
Description
72 28672 286
l 2703/GGG -2- memCria descritival 2703 / GGG -2- descriptive memory
0 presente invento diz respeito a um processo de tratamento para recuperação de areia de fundição usada ligada, predominante mente a argila, com a finalidade da sua reutilização, em vez de areia nova, processo no qual os grãos de areia são, repetidas vezes, acelerados e travados e, pela combinação das tensões de choque e de corte, esfregados uns contra os outros e, desta manei ra, libertados do invÕlucro aderente de substâncias aglutinantes e aditivas, com utilização de um dispositivo pneumático que remove o põ.The present invention relates to a treatment process for recovering used spent casting sand, predominantly clay, for the purpose of its reuse rather than new sand, in which the grains of sand are repeatedly accelerated and, by the combination of shock and shear stresses, are wiped against each other and are thus released from the bonding and bonding additive casing using a pneumatic device which removes the powder.
Para que os grãos de areia sejam completamente libertados do invólucro, ê absolutamente necessário que o invólucro seja removido sob forma de põ, por aspiração. No caso de o pó não ser removido, as tensões de choque e de corte são amortecidas e o tratamento de recuperação fortemente prejudicado.In order for the grains of sand to be completely released from the shell, it is absolutely necessary that the shell be removed in powder form by aspiration. In case the powder is not removed, the shock and shear stresses are damped and the recovery treatment is severely impaired.
Apesar da forte aspiração do pó em formação, o objectivo não ê alcançado se se formarem, durante o processo, pequenos aglo merados. Por meio de um agitador é possível partir estes aglomerados, o que só ê conseguido, no entanto, algum tempo depois, diminuindo-se, desta maneira, a quantidade que passa por uma tal instalação de recuperação.Despite the strong aspiration of the powder being formed, the aim is not achieved if small agglomerates form during the process. By means of an agitator it is possible to split these agglomerates, which is only achieved, however, some time later, thereby reducing the amount passing through such a recovery facility.
Partindo deste nível actual da técnica, o presente invento tem como objectivo resolver o problema da criação de um processo do tipo, inicialmente mencionado, que permita uma boa recuperação da areia usada e, ao mesmo tempo, mantenha o rendimento da instalação de recuperação de areia usada constante.Starting from this current level of the technique, the present invention aims at solving the problem of creating a process of the type mentioned initially, allowing a good recovery of the sand used and, at the same time, maintaining the yield of the sand recovery plant used constant.
Este problema ê resolvido de acordo com o invento ajustando -se, antes do tratamento de recuperação, o teor em água da areia usada, a um por cento em peso de água, no máximo. 0 facto de os aglomerados de areia ou de pó, respectivamen-te, poderem ser partidos, após um certo período de tempo, por um agitador, ê um indício de que o efeito mecânico se transformou num efeito térmico. 0 calor, desta forma fornecido aos aglomerados de areia ou de põ, respectivamente, não ê económico, por se tratar de energia eléctrica. É, por isso, mais vantajoso secar previamente a areia, de-This problem is solved in accordance with the invention by adjusting, prior to the recovery treatment, the water content of the sand used, to a maximum weight percent by weight of water. The fact that the sand or powder agglomerates respectively can be broken after a certain period of time by an agitator is an indication that the mechanical effect has turned into a thermal effect. The heat thus supplied to the sand or powder agglomerates, respectively, is not economical because it is electrical energy. It is therefore more advantageous to pre-dry the sand, de-
72 286 2703/GGG72 286 2703 / GGG
-3- vendo o teor de água, antes do tratamento de recuperação, atingir no máximo, um por cento em peso ou menos. Sob estas condi-’ ções, não se dá qualquer formação de aglomerados mantendo assim a instalação de recuperação de areia usada,o seu mãximo rendimento .The water content, before the recovery treatment, reaches a maximum of one percent by weight or less. Under these conditions, there is no formation of agglomerates thus maintaining the used sand reclamation facility, its maximum yield.
Claims (1)
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 |
|---|---|
| PT96990A true PT96990A (en) | 1993-02-26 |
Family
ID=4194306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT96990A PT96990A (en) | 1990-03-08 | 1991-03-08 | USED FOUNDATION SAND RECOVERY TREATMENT PROCESS PREDOMINATELY CONNECTED WITH CLAY |
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 |
| ES2028707A6 (en) | 1992-07-01 |
| 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 |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| BB1A | Laying open of patent application |
Effective date: 19921029 |
|
| FC3A | Refusal |
Effective date: 19981123 |