CN214218777U - Improved special scrap steel bucket for laying pig iron - Google Patents
Improved special scrap steel bucket for laying pig iron Download PDFInfo
- Publication number
- CN214218777U CN214218777U CN202022299527.2U CN202022299527U CN214218777U CN 214218777 U CN214218777 U CN 214218777U CN 202022299527 U CN202022299527 U CN 202022299527U CN 214218777 U CN214218777 U CN 214218777U
- Authority
- CN
- China
- Prior art keywords
- pig iron
- steel
- laying
- converter
- arrangement groove
- 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
- 229910000805 Pig iron Inorganic materials 0.000 title claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002893 slag Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Abstract
The utility model discloses a special scrap steel fill of modified shop pig iron, including the steel fill body, setting up an outside V-arrangement groove of opening on the discharge gate bottom surface of steel fill body, the contained angle an in V-arrangement groove is 30, and the length in V-arrangement groove is 1 meter, highly is 30 centimetres. The steel hopper can prevent the pig iron blocks from being piled after being poured into the converter, ensure that the pig iron blocks can be uniformly and dispersedly paved on the required position, obviously improve the pig iron paving process quality, greatly reduce the invalid pig iron paving times, be fast and efficient, and further improve the production efficiency of the converter.
Description
Technical Field
The utility model relates to a special scrap steel fill of modified shop pig iron.
Background
All types of converters at home and abroad face the problem of lining erosion in the production process, and the furnace repairing is still a main measure for recovering the lining except for the conventional slag splashing means.
At present, a steel plant of eight-steel company searches out a set of quick and effective furnace lining maintenance means, namely a pig iron laying process, through continuous exploration and practice. The main principle of the process is that after the converter taps steel, slag splashing operation is not directly adopted, a certain amount of pig iron blocks (the block size is controlled to be 40mm multiplied by 80mm multiplied by 100 mm) are added into the waste steel hopper according to the carbon content at the end point of the converter, the converter is shaken to a proper angle according to the different parts of the furnace lining needing to be maintained, and the pig iron in the waste steel hopper is poured into the converter. The melting point of pig iron is basically 1200 ℃, the temperature of slag in the furnace before slag splashing is 1300-1400 ℃, after pig iron is added into the furnace, the pig iron sinks at the position of the furnace lining bricks because the density of the pig iron is larger than that of the slag, and the upper part of the pig iron is covered by the slag. The pig iron stands still in the furnace for 3-5min and is in a molten state after absorbing heat, and the furnace is shaken straight at the moment to directly splash slag. The pig iron is solidified into a solid state again under the action of nitrogen cooling, and the slag covered on the upper part has a certain erosion resistance effect, so that the effect of protecting the furnace lining is achieved.
During the execution of the "pig iron laying" process, whether the pig iron in the furnace is uniform or not is the key point for the execution of the process. In the process of executing the 'pig iron laying' process of the prior eight-steel 120t converter, the pig iron added from a scrap steel hopper is in a 'stack' shape after being poured into the converter, so that the pig iron is exposed, and the pig iron is melted because the pig iron cannot be effectively covered by slag in the slag splashing process, so that the effect of maintaining a furnace lining is not achieved. In addition, the pig iron in the furnace is in a pile shape, which causes the shape of the furnace to change violently, and is not beneficial to the normal smelting of the converter.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a special steel scrap fill of pig iron is spread to modified can prevent to be the heap form after the pig iron piece is poured into the stove, ensures that the pig iron piece evenly can be even, dispersed and spread at required position, obviously improves "spread pig iron" process quality, reduces invalid shop's pig iron number of times by a wide margin, and is swift, high-efficient, further improves the production efficiency of converter.
The utility model aims at realizing like this, a special steel scrap fill of modified shop pig iron, including the steel fill body, setting up an outside V-arrangement groove of opening on the discharge gate bottom surface of steel fill body, the contained angle an in V-arrangement groove is 30, and the length in V-arrangement groove is 1 meter, highly is 30 centimetres.
Adopt the utility model discloses the steel fill, the pig iron piece in the steel fill is even after the stove is added to pig iron through the reposition of redundant personnel and the carding in V-arrangement groove, "pile form" phenomenon disappears, and pig iron fettling effect is better. The effect of laying pig iron every shift is obviously improved, the frequency of laying pig iron can be reduced by 4-5 times, and the auxiliary operation time is saved by 30 min. The furnace shape is uniform and stable, and the phenomena of gun forming and splashing in the operation process are reduced by 25 percent. The utility model discloses make full use of original steel scrap hopper, installed a V-arrangement groove additional through the welded mode at the inside front end of steel scrap hopper, pig iron is going into the stove in-process and is dispersing by oneself. The scrap steel bucket is special for laying pig iron, and has the advantages of low manufacturing cost, obvious effect, simplicity and practicability.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is an enlarged schematic view of the V-shaped groove of fig. 1.
Detailed Description
An improved special scrap steel bucket for laying pig iron is shown in figures 1 and 2 and comprises a steel bucket body 1, wherein a V-shaped groove 2 with an outward opening is arranged on the bottom surface of a discharge port of the steel bucket body 1, the included angle a of the V-shaped groove 2 is 30 degrees, the length L of the V-shaped groove 2 is 1 meter, and the height H of the V-shaped groove 2 is 30 centimeters.
Claims (1)
1. The utility model provides a special scrap steel fill of pig iron is spread to modified, includes the steel fill body, characterized by: a V-shaped groove with an outward opening is arranged on the bottom surface of a discharge hole of the steel hopper body, the included angle a of the V-shaped groove is 30 degrees, the length of the V-shaped groove is 1 meter, and the height of the V-shaped groove is 30 centimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022299527.2U CN214218777U (en) | 2020-10-15 | 2020-10-15 | Improved special scrap steel bucket for laying pig iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022299527.2U CN214218777U (en) | 2020-10-15 | 2020-10-15 | Improved special scrap steel bucket for laying pig iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214218777U true CN214218777U (en) | 2021-09-17 |
Family
ID=77694600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022299527.2U Expired - Fee Related CN214218777U (en) | 2020-10-15 | 2020-10-15 | Improved special scrap steel bucket for laying pig iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214218777U (en) |
-
2020
- 2020-10-15 CN CN202022299527.2U patent/CN214218777U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210917 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |