CN2547439Y - Grate skimming drag - Google Patents
Grate skimming drag Download PDFInfo
- Publication number
- CN2547439Y CN2547439Y CN 02273430 CN02273430U CN2547439Y CN 2547439 Y CN2547439 Y CN 2547439Y CN 02273430 CN02273430 CN 02273430 CN 02273430 U CN02273430 U CN 02273430U CN 2547439 Y CN2547439 Y CN 2547439Y
- Authority
- CN
- China
- Prior art keywords
- drag head
- skimming
- grate
- molten iron
- drag
- 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
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- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
The utility model relates to a grate skimming drag head for molten iron skimmer used in steel plants. Two or more than two rectangular grate holes are arranged on the lower part of the drag head, the grate holes are vertical holes, arcs bending inwardly are arranged on both sides of the drag head, and the bottom side of each rectangular grate hole is aslope. Compared with the prior skimming drag head, the utility model reduces molten iron consumption with a daily average skim of 30 cans and 21600 tons of molten iron saved annually, improves working efficiency with little refuse flowing back to a pot along the two sides of the drag head and working efficiency improvement by more than one fold, and puts an end to resulfurization of molten iron because sufficient time is provided for skimming all desulfurized refuse in the molten iron pot due to reduced working time. The utility model puts an end to resulfurization of molten iron with high temperature resistance, friction resistance, long service life and reduced work load of replacing the drag head.
Description
Technical field
The utility model relates to a kind of steel mill molten iron Cinder Machine grate formula drag head of skimming.
Background technology
At present, the molten iron Cinder Machine that the preliminary treatment of steel mill molten iron the is used drag head of skimming, it is a kind of common rectangle steel plate, the drag head of skimming does not have the grate hole, skims and takes away molten iron simultaneously, 100 tons of every jar of molten iron, take off one jar desulfurization slag and taken 3 tons of molten iron at least out of, steel mill is per day to skim 30 jars, just loses 21600 tons of molten iron in 1 year, and loss is serious; Desulfurization slag is light, when skimming slag in the return tank of drag head both sides, the motion of whenever once skimming, the bits that just have half are sneaked off from the both sides of drag head and are still stayed in the hot-metal bottle, cause the efficient of skimming low, and the shock wave of speed is big during work, reduce the speed of skimming, operating efficiency reduces.
Summary of the invention
The purpose of this utility model provides a kind of efficient height of skimming, carry the few grate formula of the molten iron drag head of skimming.
The purpose of this utility model is achieved in that
A kind of grate formula drag head of skimming, it is characterized in that: two or more rectangle grates hole is arranged at the drag head bottom, and the grate hole is a vertical core.
The above-mentioned grate formula drag head of skimming, it is characterized in that: there is aduncate circular arc the drag head both sides.
The above-mentioned grate formula drag head of skimming, it is characterized in that: base, rectangle grate hole has the gradient.
The above-mentioned grate formula drag head of skimming is characterized in that: the long 700mm of drag head, and wide 400mm, thickness 10～15mm, the grate hole is 100mm * 200mm, apart from base 50mm.
The above-mentioned grate formula drag head of skimming is characterized in that: drag head adopts high-temperature alloy steel plate or structural ceramics plate.
The utility model is compared with the former drag head of skimming:
One, reduces molten steel consumption: use the novel grate formula drag head of skimming that the grate hole is arranged, reduce molten iron in clean and take out of skimming, 100 tons of every jar of molten iron, take off one jar with the old-fashioned drag head of skimming and taken 3 tons of molten iron at least out of, use the utility model grate formula drag head to scratch clean one jar and take 1 ton of molten iron at most out of, steel mill is per day to skim 30 jars, just loses 21600 tons of molten iron less in 1 year.
Two, increase work efficiency: the motion of whenever once skimming of the old-fashioned drag head of skimming, slag is in the return tank of drag head both sides, the bits that just have half are sneaked off from the both sides of drag head and are still stayed in the hot-metal bottle, cause the efficient of skimming low, use this novel grate formula drag head both sides of skimming that aduncate circular arc is arranged, slag in the return tank of drag head both sides seldom can be increased work efficiency more than one times.
Three, stop molten iron and return sulphur: use the grate formula to skim behind the drag head, because the shortening of working time has the sufficient time that the desulfurization slag in the hot-metal bottle is scratched clean, that has stopped molten iron returns the sulphur phenomenon.
Four, high temperature resistant, the rub resistance of the utility model, long service life reduces drag head and changes workload.
Description of drawings
Fig. 1 grate formula drag head front view of skimming
Fig. 2 grate formula drag head vertical view of skimming
The specific embodiment
As shown in the figure, a kind of grate formula drag head of skimming, three rectangle grate hole 2 is arranged at drag head 1 bottom, the grate hole is a vertical core, forms crossbeam 3 below the grate hole, and crossbeam can reduce the drag head distortion, can also play the effect of the thin slag of rake, there is aduncate circular arc 4 drag head 1 both sides, avoid slag in the return tank of drag head both sides, base, rectangle grate hole has the gradient, reduces grate hole dross, the long 700mm of drag head, wide 400mm, thickness 10～15mm, the grate hole is 100mm * 200mm, apart from base 50mm.The drag head employing is high temperature resistant down can not modification or high-temperature alloy steel plate that dissolves or structural ceramics plate at 1550 ℃.
Claims (5)
1. grate formula drag head of skimming, it is characterized in that: two or more rectangle grates hole is arranged at the drag head bottom, and the grate hole is a vertical core.
2. the grate formula according to claim 1 drag head of skimming, it is characterized in that: there is aduncate circular arc the drag head both sides.
3. the grate formula according to claim 1 drag head of skimming, it is characterized in that: base, rectangle grate hole has the gradient.
4. the grate formula according to claim 1 drag head of skimming is characterized in that: the long 700mm of drag head, and wide 400mm, thickness 10～15mm, the grate hole is 100mm * 200mm, apart from base 50mm.
5. the grate formula according to claim 1 drag head of skimming is characterized in that: drag head adopts high-temperature alloy steel plate or structural ceramics plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02273430 CN2547439Y (en) | 2002-06-03 | 2002-06-03 | Grate skimming drag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02273430 CN2547439Y (en) | 2002-06-03 | 2002-06-03 | Grate skimming drag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2547439Y true CN2547439Y (en) | 2003-04-30 |
Family
ID=33737907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02273430 Expired - Fee Related CN2547439Y (en) | 2002-06-03 | 2002-06-03 | Grate skimming drag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2547439Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559992A (en) * | 2012-03-01 | 2012-07-11 | 首钢总公司 | Vehicle-mounted slag-raking machine for converter, and use method |
-
2002
- 2002-06-03 CN CN 02273430 patent/CN2547439Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102559992A (en) * | 2012-03-01 | 2012-07-11 | 首钢总公司 | Vehicle-mounted slag-raking machine for converter, and use method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |