DE1608041A1 - Method for operating a molding sand preparation plant with wet dust extractor - Google Patents
Method for operating a molding sand preparation plant with wet dust extractorInfo
- Publication number
- DE1608041A1 DE1608041A1 DE19681608041 DE1608041A DE1608041A1 DE 1608041 A1 DE1608041 A1 DE 1608041A1 DE 19681608041 DE19681608041 DE 19681608041 DE 1608041 A DE1608041 A DE 1608041A DE 1608041 A1 DE1608041 A1 DE 1608041A1
- Authority
- DE
- Germany
- Prior art keywords
- molding sand
- operating
- wet dust
- dust extractor
- preparation plant
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 9
- 239000003110 molding sand Substances 0.000 title claims description 7
- 239000000428 dust Substances 0.000 title description 5
- 238000002360 preparation method Methods 0.000 title description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000002817 coal dust Substances 0.000 description 8
- 239000000440 bentonite Substances 0.000 description 7
- 229910000278 bentonite Inorganic materials 0.000 description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000004576 sand Substances 0.000 description 3
- 238000001035 drying Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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)
Description
Verfahren zum Betrieb einer Formsandaufbereitungsanlage mit Naßentstauber Die Erfindung betrifft ein Verfahren zum Betrieb eines Naßentstaubers, insbesondere innerhalb einer Gießereiformsandaufbereitungsanlage. Gießereisand enthält Bentonit und Kohlenstaub, welche teure Bestandteile sind. Method for operating a molding sand preparation plant with wet dust extractor The invention relates to a method for operating a wet deduster, in particular within a foundry molding sand treatment plant. Foundry sand contains bentonite and coal dust, which are expensive components .
Der Sand Wird nach jedem Umlauf durch die verschiedenen Prozesse in einer Aufbereitungsanlage wieder regeneriert. Hierbei muß auch der während dem Prozess verbrauchte Bentonit- und Kohlen- staubanteil wieder ersetzt werden. Eine Aufbereitungsanlage muß entstaubt werden, um verbrauchtes Quarzkorn, welches zu Quarz- staub zerfallen ist, herauszuziehen, da dies dem Arbeitsprozess schadet. An Stellen in der Aufbereitung, wo der Sand feinverteilt anfällt, also vor allem im Sieb und in der Schleuder, wird daher Luft durch diese Maschinen hindurchgezogen, wobei alle staubartigem Bestandteile aus dem Formsand herausgezogen "werden. Da der Quarzstaub einerseits und der Kohlenstaub und Bentonit anderer- seits etwa gleiche Korngrößen und spezifisches Gewicht haben, wird bei diesem trockenen Windsiahtverfahren unvermeidlich teurer Kohlenstaub und Be»tonit der Anlage entzogen. Die abgesaugte Staubluft Wird einem Entstauber eugeführt. Ar- beitet der Entstauber nach einem trockenen Verfahren, also als Elektrofilter oder Zyklon, so ist der zwangsläufig mit heraus- gezogene Bentonit und Kohlenstaub verloren, weil er trotz bis-herigen Versuche nicht wirtschaftlich von Quarzstaub getrennt werden kann. The sand is regenerated after each cycle through the various processes in a processing plant. The bentonite and coal dust components used up during the process must also be replaced. A processing plant must be dedusted in order to pull out used quartz grain, which has disintegrated into quartz dust, as this damages the work process. At points in the processing where the sand accumulates finely dispersed, ie primarily in the sieve, and in the sling, thus air is drawn through these machines, "wherein all dust-like components withdrawn from the molding sand. Since the fumed silica on the one hand and the coal dust and bentonite on the other hand, have approximately the same particle sizes and specific gravity, in this dry Windsiahtverfahren inevitably more expensive coal dust and be "tonit removed from the plant. the extracted dust air is eugeführt a dust collector. working beitet the dust collector after a dry process, so as electrostatic precipitators or cyclone , is the inevitably lost with challenges drawn bentonite and coal dust because it can not be economically separated from quartz dust despite bis take precedence attempts.
Die Rückgewinnung dieses Bentonits und Kohlenstaubes ist Gegen- stand des erfindungsgemäßen Verfahrens, denn es hat sich gezeigt und ist durch Versuche im Betrieb erwiesen, daß Bentonit im Wasser eines jeden'Naßentstaubers sich anreichert und nicht ab- setzt, und das Kohlenstaub infolge seiner Unbenetzbarkeit auf dem Wasserspiegel. schwiimt oder sumindest eine längere Absatzzeit benötigt als Quarzstaub. The recovery of this bentonite and coal dust is subject of the novel process, because it has been found and has been proven by experiments in operation that bentonite accumulates in the water of a jeden'Naßentstaubers and is not exhaustive, and the coal dust due to its non-wettability on the water level. floats or at least needs a longer sales period than quartz dust.
Das Kennzeichnende der Erfindung ist daher darin zu sehen, daßr der laufende Wasserbedarf der Aufbereitungsanlage, der dem Formsend zugegeben werden mußg als Ausgleich für die während dem ganzen Prozess verlorene Feuohtigkeit,aus dem Wasservorrat des Naßentstaubers gedeckt wird, und daß der im Wasser enthaltene Bentonit und Kohlenstaub mit diesem Naßentstauberwasser dem Form- sand zurückgegeben wird. The characteristic of the invention is therefore to be seen in the fact that the current water requirement of the treatment system, which must be added to the molding end to compensate for the fire lost during the entire process , is covered from the water supply of the wet deduster, and that the bentonite and contained in the water Coal dust is returned to the molding sand with this wet dedusting water.
Eine erhebliche Einsparung dieser sonst verlorenen, teuren Bestandteile ist das Ergebnis. The result is a considerable saving in these otherwise lost, expensive components .
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEB0096753 | 1968-02-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1608041A1 true DE1608041A1 (en) | 1970-10-22 |
Family
ID=6988893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19681608041 Pending DE1608041A1 (en) | 1968-02-21 | 1968-02-21 | Method for operating a molding sand preparation plant with wet dust extractor |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1608041A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT401743B (en) * | 1990-03-08 | 1996-11-25 | Fischer Ag Georg | METHOD FOR BATCHLY REGENERATING TREATMENT OF PRIMARY SAND-CONTAINED FOUNDRY SAND |
-
1968
- 1968-02-21 DE DE19681608041 patent/DE1608041A1/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT401743B (en) * | 1990-03-08 | 1996-11-25 | Fischer Ag Georg | METHOD FOR BATCHLY REGENERATING TREATMENT OF PRIMARY SAND-CONTAINED FOUNDRY SAND |
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