FR2267845A2 - Recovery of foundry sand, e.g. shell moulding sand - using fluidised bed for complete combustion or organic matter - Google Patents
Recovery of foundry sand, e.g. shell moulding sand - using fluidised bed for complete combustion or organic matterInfo
- Publication number
- FR2267845A2 FR2267845A2 FR7428564A FR7428564A FR2267845A2 FR 2267845 A2 FR2267845 A2 FR 2267845A2 FR 7428564 A FR7428564 A FR 7428564A FR 7428564 A FR7428564 A FR 7428564A FR 2267845 A2 FR2267845 A2 FR 2267845A2
- Authority
- FR
- France
- Prior art keywords
- sand
- fluidised bed
- recovery
- organic matter
- vibratory conveyor
- 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.)
- Granted
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
- B22C5/08—Machines or devices specially designed for dressing or handling the mould material so far as specially adapted for that purpose by sprinkling, cooling, or drying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The parent patent described a process for the recovery of moulding sand covered with combustible foreign substances, e.g. shell moulding sand, by heating, where the heating was carried out on one or more vibratory conveyor chutes arranged in a row. In the present invention, after treatment in the vibratory conveyor, the hot sand is processed in a fluidised bed. The air used in the fluidised bed is pref. preheated by the heat arising from the recovery process. In the pref. plant, the vibratory conveyor chute(s) is/are followed by at least one fluidised bed fitted with transverse baffles and bodies made of a thermal insulant the dia and / or density of which is greater than that of the sand. The amt. of sand flowing through the plant can be increased and the operating temp. lowered, thus reducing the processing costs.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742419186 DE2419186C2 (en) | 1974-04-20 | Method and device for regenerating molding sand contaminated with combustible foreign matter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2267845A2 true FR2267845A2 (en) | 1975-11-14 |
| FR2267845B2 FR2267845B2 (en) | 1977-03-25 |
Family
ID=5913483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7428564A Granted FR2267845A2 (en) | 1974-04-20 | 1974-08-20 | Recovery of foundry sand, e.g. shell moulding sand - using fluidised bed for complete combustion or organic matter |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE828104R (en) |
| CH (1) | CH579956A5 (en) |
| FR (1) | FR2267845A2 (en) |
-
1974
- 1974-08-20 FR FR7428564A patent/FR2267845A2/en active Granted
-
1975
- 1975-04-18 CH CH498375A patent/CH579956A5/xx not_active IP Right Cessation
- 1975-04-18 BE BE155539A patent/BE828104R/en active
Also Published As
| Publication number | Publication date |
|---|---|
| FR2267845B2 (en) | 1977-03-25 |
| DE2419186A1 (en) | 1975-09-11 |
| CH579956A5 (en) | 1976-09-30 |
| BE828104R (en) | 1975-10-20 |
| DE2419186B1 (en) | 1975-09-11 |
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