CN210711613U - Layout structure of furnace bottom gas supply brick for reducing carbon-oxygen deposit at converter end point - Google Patents
Layout structure of furnace bottom gas supply brick for reducing carbon-oxygen deposit at converter end point Download PDFInfo
- Publication number
- CN210711613U CN210711613U CN201921380524.2U CN201921380524U CN210711613U CN 210711613 U CN210711613 U CN 210711613U CN 201921380524 U CN201921380524 U CN 201921380524U CN 210711613 U CN210711613 U CN 210711613U
- Authority
- CN
- China
- Prior art keywords
- bricks
- gas supply
- converter
- brick
- distributed
- 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.)
- Active
Links
Images
Landscapes
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model relates to a layout structure of furnace bottom air supply bricks for reducing the carbon and oxygen deposit at the end point of a converter, which comprises 12 to 18 air supply bricks distributed at the bottom of the converter, wherein the 12 to 18 air supply bricks are respectively arranged on the circumferences of three different diameters of an inner ring, a middle ring and an outer ring of the bottom of the converter; 4-6 air supply bricks are distributed on the inner ring, 4-6 air supply bricks are distributed on the middle ring, and 4-6 air supply bricks are distributed on the outer ring. The utility model discloses change the bottom blowing mode of arranging, the total flow of bottom blowing and air feed intensity reduce converter terminal point carbon oxygen deposit simultaneously, can make converter terminal point carbon oxygen deposit average value reach 0.0018, and the index is relatively stable. The smelting operation of the utility model is simple, the carbon-oxygen deposition index is relatively stable, and the molten steel cleanliness and the alloy yield are all improved to some extent.
Description
Technical Field
The utility model relates to a converter steelmaking technical field especially relates to a reduce long-pending stove bottom air feed brick layout structure of converter terminal point carbon oxygen.
Background
The method is characterized in that the level of the converter end point carbon oxygen deposit has important influence on the cleanliness of molten steel and the yield of alloy, the converter end point carbon oxygen deposit is a key index for producing high-quality clean steel, scientific researchers try various methods to reduce the converter end point carbon oxygen deposit, 1, waste magnesia carbon bricks are added into the molten steel, fluorite is introduced as a catalyst, and 2, the oxygen lance position, the oxygen supply intensity and the bottom blowing argon blowing intensity are reasonably adjusted to achieve the aim of reducing the converter end point carbon oxygen deposit by 0.0018. The method has relatively complex process operation and is not easy to control, and in addition, the carbon oxygen deposit index is unstable, so the research of a simple and effective mode for reducing the converter end point carbon oxygen deposit has important practical significance for improving the quality of steel.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a reduce stove bottom air feed brick layout structure of converter terminal point carbon oxygen deposit changes the bottom blowing mode of arranging, and the total flow of bottom blowing and air feed intensity reduce converter terminal point carbon oxygen deposit simultaneously, and this method can make converter terminal point carbon oxygen deposit average value reach 0.0018, and the index is relatively stable.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the layout structure of the furnace bottom gas supply bricks for reducing the carbon-oxygen deposit at the end point of the converter comprises 12-18 gas supply bricks distributed at the bottom of the converter, wherein the 12-18 gas supply bricks are respectively arranged on the circumferences of an inner ring, a middle ring and an outer ring of the bottom of the converter, which have different diameters; 4-6 air supply bricks are distributed on the inner ring, 4-6 air supply bricks are distributed on the middle ring, and 4-6 air supply bricks are distributed on the outer ring.
The layout structure of the furnace bottom gas supply bricks for reducing the endpoint carbon and oxygen deposit of the converter comprises 12 gas supply bricks distributed at the bottom of the converter, wherein the 12 gas supply bricks are respectively arranged on three circumferences of an inner ring, a middle ring and an outer ring of the furnace bottom, which have different diameters; 4 air supply bricks are distributed on the inner ring, wherein two air supply bricks are symmetrically arranged on a connecting line of the trunnion, and the other two air supply bricks are symmetrically arranged on a connecting line of the steel tapping side and the feeding side; the middle ring is distributed with 4 air supply bricks which are symmetrically arranged on a straight line which forms an angle of 45 degrees with the connecting line of the trunnion; the outer ring is provided with 4 air supply bricks which are symmetrically arranged on a straight line forming an angle of 22.5 degrees with the connecting line of the trunnion.
The layout structure of the furnace bottom gas supply bricks for reducing the endpoint carbon and oxygen deposit of the converter comprises 18 gas supply bricks distributed at the bottom of the converter, wherein the 18 gas supply bricks are respectively arranged on three circumferences of an inner ring, a middle ring and an outer ring of the furnace bottom, which have different diameters; 6 air feed bricks are evenly distributed on the inner ring, 6 air feed bricks are evenly distributed on the middle ring, 6 air feed bricks are evenly distributed on the outer ring, the air feed bricks on the inner ring and the air feed bricks on the outer ring are arranged at the same angle, and the air feed bricks on the middle ring, the air feed bricks on the inner ring and the air feed bricks on the outer ring are arranged at a staggered angle of 30 degrees.
The circumference diameter of the inner ring is 1800-2600mm, the circumference diameter of the middle ring is 2200-3200mm, and the circumference diameter of the outer ring is 2700-4000 mm.
The gas supply brick comprises a magnesia carbon brick and a cluster pipe, wherein the cluster pipe is prefabricated in the magnesia carbon brick.
The magnesia carbon brick is a large-scale hearth brick, the brick shape is wedge-shaped, two opposite sides of the brick body are arc-shaped, the other two opposite sides are straight edges, and the brick length L is 1300 mm; chord length D of large arc of large end face of brick body1500-720mm, radius R of the large arc1900 plus 2000mm, chord length d of small circular arc1Is 400-620mm, and the radius r of the small circular arc1800-1900 mm; chord length D of large arc of small end face of brick body2400-640mm, the radius R of the large arc2800-1850mm, chord length d of small arc2Is 350-580mm, and the radius r of the small circular arc2Is 650 and 1660 mm.
The bundling tube comprises a main tube and a plurality of single-branch bundling tubes, the main tube is communicated with the single-branch bundling tubes, and the distribution range of the single-branch bundling tubes is phi 90 mm-phi 200 mm.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses change the bottom blowing mode of arranging, the total flow of bottom blowing and air feed intensity reduce converter terminal point carbon oxygen deposit simultaneously, can make converter terminal point carbon oxygen deposit average value reach 0.0018, and the index is relatively stable. The smelting operation of the utility model is simple, the carbon-oxygen deposition index is relatively stable, and the molten steel cleanliness and the alloy yield are all improved to some extent.
Drawings
Fig. 1 is a schematic diagram (one) of the distribution structure of the furnace bottom air supply brick of the utility model.
Fig. 2 is a schematic diagram (two) of the distribution structure of the furnace bottom air supply brick of the utility model.
FIG. 3 is a schematic structural view of the single furnace bottom air supply brick of the present invention.
Fig. 4 is a schematic structural view of the middle bundling tube of the present invention.
In the figure: 1-outer ring air supply brick, 2-middle ring air supply brick, 3-inner ring air supply brick, 4-bundling tube, 5-magnesia carbon brick, 6-single bundling tube, 7-header pipe.
Detailed Description
The following further describes the embodiments of the present invention:
the layout structure of the furnace bottom gas supply bricks for reducing the carbon-oxygen deposit at the end point of the converter comprises 12-18 gas supply bricks distributed at the bottom of the converter, wherein the 12-18 gas supply bricks are respectively arranged on the circumferences of an inner ring, a middle ring and an outer ring of the bottom of the converter, which have different diameters; 4-6 air supply bricks are distributed on the inner ring, 4-6 air supply bricks are distributed on the middle ring, and 4-6 air supply bricks are distributed on the outer ring.
The first embodiment of the layout structure of the furnace bottom gas supply bricks for reducing the carbon-oxygen deposit at the end point of the converter comprises 12 gas supply bricks distributed at the bottom of the converter as shown in figure 1, wherein the 12 gas supply bricks are respectively arranged on the circumferences of an inner ring, a middle ring and an outer ring of the furnace bottom with different diameters; 4 air supply bricks are distributed on the inner ring, wherein two air supply bricks are symmetrically arranged on a connecting line of the trunnion, and the other two air supply bricks are symmetrically arranged on a connecting line of the steel tapping side and the feeding side; the middle ring is distributed with 4 air supply bricks which are symmetrically arranged on a straight line which forms an angle of 45 degrees with the connecting line of the trunnion; the outer ring is provided with 4 air supply bricks which are symmetrically arranged on a straight line forming an angle of 22.5 degrees with the connecting line of the trunnion.
The second embodiment of the layout structure of the furnace bottom gas supply bricks for reducing the carbon-oxygen deposit at the end point of the converter comprises 18 gas supply bricks distributed at the bottom of the converter as shown in figure 2, wherein the 18 gas supply bricks are respectively arranged on the circumferences of an inner ring, a middle ring and an outer ring of the furnace bottom with different diameters; 6 air feed bricks of inner ring equipartition, 6 air feed bricks of zhonghuan equipartition, 6 air feed bricks of outer ring equipartition, inner ring air feed brick 3 and outer ring air feed brick 1 are arranged at same angle, zhonghuan air feed brick 2 and inner ring air feed brick 3 and outer ring air feed brick 1 stagger 30 jiaos and arrange.
The circumference diameter of the inner ring is 1800-2600mm, the circumference diameter of the middle ring is 2200-3200mm, and the circumference diameter of the outer ring is 2700-4000 mm. The circumferential diameter of the inner ring is preferably 1850.8mm, the circumferential diameter of the middle ring is preferably 2236.8mm, and the circumferential diameter of the outer ring is preferably 2798.6 mm.
The gas supply brick comprises a magnesia carbon brick 5 and a bundling pipe 4, wherein the bundling pipe 4 is prefabricated in the magnesia carbon brick 5.
See fig. 3, magnesia carbon brick 5 is large-scale bottom brick, and the brick type is the wedge, and the relative both sides of the brick body are the circular arc type, and relative both sides are the straight flange in addition, and the preferred size of magnesia carbon brick 5 is: the brick length L is 1100 mm; chord length D of large arc of large end face of brick body1567.7mm, radius R of the great circle arc11766mm, the chord length d of the small arc1432.9mm, radius r of the small circular arc11347 mm; chord length D of large arc of small end face of brick body2460.3mm, radius R of the great circle2Is 1432mm, the chord length d of the small circular arc2Is 351mm, the radius r of the small circular arc2Is 1092 mm.
Referring to fig. 4, the bundling tube 4 comprises a main tube 7 and a plurality of single-branch bundling tubes 6, the main tube 7 is communicated with the single-branch bundling tubes 6, and the distribution range of the single-branch bundling tubes 6 is phi 90 mm-phi 200 mm.
The diameter of a single-branch bundling tube 6 in the bundling tube is 2-3mm, the single-branch bundling tube 6 is arranged in 4-6 rings, and the number of the arranged branches of each ring is 3-5 branches of a 1 st ring, 5-8 branches of a 2 nd ring, 8-10 branches of a 3 rd ring, 10-12 branches of a 4 th ring, 12-15 branches of a 5 th ring and 15-18 branches of a 6 th ring.
Example 1:
taking a 200-ton converter in a certain steel mill as an example, the smelting conditions are as follows: the average tapping temperature is 1665 ℃, the maximum tapping temperature is 1720 ℃, the smelting period is 48min, and the tapping amount: 200 t. The design scheme of the furnace bottom gas supply brick is as follows: 12 air supply bricks are distributed at the bottom of the furnace, and the 12 air supply bricks are respectively arranged on the three circumferences of the inner ring, the middle ring and the outer ring of the bottom of the furnace, which have different diameters; the circumference diameter of the inner ring is 2000mm, the circumference diameter of the middle ring is 3100mm, and the circumference diameter of the outer ring is 4000 mm.
4 air supply bricks are distributed on the inner ring, wherein two air supply bricks are symmetrically arranged on a connecting line of the trunnion, and the other two air supply bricks are symmetrically arranged on a connecting line of the steel tapping side and the feeding side; the middle ring is distributed with 4 air supply bricks which are symmetrically arranged on a straight line which forms an angle of 45 degrees with the connecting line of the trunnion; the outer ring is provided with 4 air supply bricks which are symmetrically arranged on a straight line forming an angle of 22.5 degrees with the connecting line of the trunnion.
The requirements of smelting bottom blowing flow and strength of the converter in each period are as follows: controlling the total gas flow rate to 10Nm during iron charging3Min, strength 0.05Nm3T.t, required gas flow 30Nm in the converting period3Min, strength 0.15Nm3T/min.t, required flow rate at tapping of 10Nm3Min, strength 0.05Nm3T.t. total gas flow rate required in slag splashing period of 20Nm3Min, strength 0.1Nm3T.t, total gas flow rate in slag dumping and waiting period of 10Nm3Min, strength 0.05Nm3/min.t。
The effect evaluation after the furnace service is off-line: by adopting the bottom blowing distribution and the air supply system, the average value of the carbon-oxygen products at the end point of the whole furnace service can reach 0.00188, and the indexes are relatively stable and easy to control.
Claims (7)
1. The layout structure of the furnace bottom gas supply bricks for reducing the terminal carbon oxygen deposit of the converter is characterized by comprising 12-18 gas supply bricks distributed at the bottom of the converter, wherein the 12-18 gas supply bricks are respectively arranged on the circumferences of an inner ring, a middle ring and an outer ring of the furnace bottom, which have different diameters; 4-6 air supply bricks are distributed on the inner ring, 4-6 air supply bricks are distributed on the middle ring, and 4-6 air supply bricks are distributed on the outer ring.
2. The layout structure of the furnace bottom gas supply bricks for reducing the terminal carbon oxygen deposit of the converter according to claim 1, characterized by comprising 12 gas supply bricks distributed on the bottom of the converter, wherein the 12 gas supply bricks are respectively arranged on the three circumferences with different diameters of an inner ring, a middle ring and an outer ring of the bottom of the converter; 4 air supply bricks are distributed on the inner ring, wherein two air supply bricks are symmetrically arranged on a connecting line of the trunnion, and the other two air supply bricks are symmetrically arranged on a connecting line of the steel tapping side and the feeding side; the middle ring is distributed with 4 air supply bricks which are symmetrically arranged on a straight line which forms an angle of 45 degrees with the connecting line of the trunnion; the outer ring is provided with 4 air supply bricks which are symmetrically arranged on a straight line forming an angle of 22.5 degrees with the connecting line of the trunnion.
3. The layout structure of the furnace bottom gas supply bricks for reducing the terminal carbon oxygen deposit of the converter according to claim 1, characterized by comprising 18 gas supply bricks distributed on the bottom of the converter, wherein the 18 gas supply bricks are respectively arranged on the three circumferences with different diameters of an inner ring, a middle ring and an outer ring of the bottom of the converter; 6 air feed bricks are evenly distributed on the inner ring, 6 air feed bricks are evenly distributed on the middle ring, 6 air feed bricks are evenly distributed on the outer ring, the air feed bricks on the inner ring and the air feed bricks on the outer ring are arranged at the same angle, and the air feed bricks on the middle ring, the air feed bricks on the inner ring and the air feed bricks on the outer ring are arranged at a staggered angle of 30 degrees.
4. The layout structure of furnace bottom gas supply brick for reducing the terminal carbon oxygen deposit of the converter as claimed in any one of claims 1-3, wherein the circumference diameter of the inner ring is 2600mm, the circumference diameter of the middle ring is 2200-.
5. The layout structure of the furnace bottom gas supply brick for reducing the terminal carbon oxygen deposit of the converter according to any one of claims 1 to 3, characterized in that the gas supply brick comprises magnesia carbon bricks and a bundling pipe, and the bundling pipe is prefabricated in the magnesia carbon bricks.
6. The layout structure of the furnace bottom gas supply brick for reducing the terminal carbon oxygen deposit of the converter as claimed in claim 5, wherein the magnesia carbon brick is a large-sized furnace bottom brick, the brick shape is wedge-shaped, two opposite sides of the brick body are arc-shaped, the other two opposite sides are straight sides, and the brick length L is 900-; chord length D of large arc of large end face of brick body1500-720mm, radius R of the large arc1900 plus 2000mm, chord length d of small circular arc1Is 400-620mm, and the radius r of the small circular arc1800-1900 mm; chord length D of large arc of small end face of brick body2400-640mm, the radius R of the large arc2800-1850mm, chord length d of small arc2Is 350-580mm, and the radius r of the small circular arc2Is 650 and 1660 mm.
7. The layout structure of the furnace bottom gas supply brick for reducing the terminal carbon oxygen deposit of the converter according to claim 5, wherein the bundling pipe comprises a main pipe and a plurality of single bundling pipes, the main pipe is communicated with the single bundling pipes, and the distribution range of the single bundling pipes is between 90mm and 200 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921380524.2U CN210711613U (en) | 2019-08-23 | 2019-08-23 | Layout structure of furnace bottom gas supply brick for reducing carbon-oxygen deposit at converter end point |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921380524.2U CN210711613U (en) | 2019-08-23 | 2019-08-23 | Layout structure of furnace bottom gas supply brick for reducing carbon-oxygen deposit at converter end point |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210711613U true CN210711613U (en) | 2020-06-09 |
Family
ID=70964760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921380524.2U Active CN210711613U (en) | 2019-08-23 | 2019-08-23 | Layout structure of furnace bottom gas supply brick for reducing carbon-oxygen deposit at converter end point |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210711613U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396567A (en) * | 2019-08-23 | 2019-11-01 | 鞍山市和丰耐火材料有限公司 | Reduce the furnace bottom air supply brick layout structure and bottom blowing process of converter terminal carbon oxygen product |
| CN114045375A (en) * | 2021-10-15 | 2022-02-15 | 首钢集团有限公司 | Arrangement method of bottom blowing tuyere and bottom blowing converter |
| CN114250337A (en) * | 2021-12-13 | 2022-03-29 | 辽宁科技大学 | Group type bottom gun arrangement method |
-
2019
- 2019-08-23 CN CN201921380524.2U patent/CN210711613U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110396567A (en) * | 2019-08-23 | 2019-11-01 | 鞍山市和丰耐火材料有限公司 | Reduce the furnace bottom air supply brick layout structure and bottom blowing process of converter terminal carbon oxygen product |
| CN110396567B (en) * | 2019-08-23 | 2023-04-14 | 鞍山市和丰耐火材料有限公司 | Layout structure of furnace bottom gas supply bricks for reducing carbon-oxygen deposit at converter end point and bottom blowing process |
| CN114045375A (en) * | 2021-10-15 | 2022-02-15 | 首钢集团有限公司 | Arrangement method of bottom blowing tuyere and bottom blowing converter |
| CN114250337A (en) * | 2021-12-13 | 2022-03-29 | 辽宁科技大学 | Group type bottom gun arrangement method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110396567B (en) | Layout structure of furnace bottom gas supply bricks for reducing carbon-oxygen deposit at converter end point and bottom blowing process | |
| CN210711613U (en) | Layout structure of furnace bottom gas supply brick for reducing carbon-oxygen deposit at converter end point | |
| CN110846459B (en) | Converter and smelting method thereof | |
| CN108546797B (en) | Converter bottom blowing method and converter | |
| CN201924035U (en) | Swirl bottom-blowing air supply element for combined blown converter | |
| CN102031338B (en) | Method for nitriding molten steel stably | |
| CN111041149A (en) | Method for improving bottom blowing effect of converter | |
| CN110343800B (en) | Converter bottom blowing process for bottom blowing brick grouping blowing control | |
| CN211199267U (en) | Converter | |
| CN108977620A (en) | A kind of single channel Oxygen Lance With Secondary Combustion and its application method improving converter scrap ratio | |
| CN201942693U (en) | Multi-layer cast steel cooling wall | |
| CN114350884B (en) | Bottom blowing element of combined blown converter and gas supply method | |
| CN114196798A (en) | Single-channel secondary combustion oxygen lance and use method thereof | |
| CN110885933B (en) | Method for strengthening smelting effect of bottom-blowing smelting furnace and improving melt splashing | |
| CN210163472U (en) | Molten iron dephosphorization device | |
| CN101649373B (en) | Multifunctional nozzle of finery | |
| CN215856202U (en) | Extrusion combined type secondary combustion oxygen lance nozzle | |
| CN216712158U (en) | Converter bottom blowing brick masonry structure | |
| CN216712151U (en) | Efficient converter bottom blowing element | |
| CN201971856U (en) | Lance head of top lance for steel making by using Ruhrstahl Heraeus (RH) method | |
| CN207738836U (en) | One kind contributing to energy-efficient screw thread steel-making process equipment | |
| CN214842398U (en) | Wear-resisting kiln tail device of rotary kiln | |
| CN215162896U (en) | Annular baking can device for hot-metal bottle | |
| CN202450112U (en) | Novel rotating furnace bottom air blowing and supplying element | |
| CN219991642U (en) | Furnace body gas inlet device of hydrogen-rich carbon circulating furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |