CN201626965U - Oxygen lance for blast furnace - Google Patents
Oxygen lance for blast furnace Download PDFInfo
- Publication number
- CN201626965U CN201626965U CN2009202013246U CN200920201324U CN201626965U CN 201626965 U CN201626965 U CN 201626965U CN 2009202013246 U CN2009202013246 U CN 2009202013246U CN 200920201324 U CN200920201324 U CN 200920201324U CN 201626965 U CN201626965 U CN 201626965U
- Authority
- CN
- China
- Prior art keywords
- oxygen lance
- compact high
- oxygen
- blast furnaces
- blast furnace
- 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
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 77
- 239000001301 oxygen Substances 0.000 title claims abstract description 77
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 76
- 239000000463 material Substances 0.000 claims description 25
- 238000005266 casting Methods 0.000 claims description 15
- 230000009970 fire resistant effect Effects 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 3
- 239000000835 fiber Substances 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 9
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000796 flavoring agent Substances 0.000 description 2
- 235000019634 flavors Nutrition 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000002086 nanomaterial Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002926 oxygen Chemical class 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
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- Blast Furnaces (AREA)
Abstract
The utility model discloses an oxygen lance for a blast furnace, which comprises an oxygen lance body, wherein a compact high-strength fire-resistant pouring layer is poured and connected on the outer surface of the oxygen lance body. The thickness of the compact high-strength fire-resistant pouring layer on the surface of the oxygen lance is larger or equal to 20mm and is smaller than or equal to 30mm. An explosion-proof fiber structure preventing cracking is disposed in the compact high-strength fire-resistant pouring layer. The oxygen lance for a blast furnace is environment-friendly and energy-saving, reduces cost and labor intensity and has high opening accuracy.
Description
Technical field
The utility model relates to a kind of oxygen lance for blast furnaces.
Background technology
Before putting molten iron, all can block the molten iron mouth for blast-melted mouthful with stemming.Because storing time is long, cause stemming hardening strength height in blow-on, the drill bit of taphole drilling machine is difficult to drill through stemming, is difficult to open the molten iron mouth molten iron is flowed out.Generally be earlier in molten iron mouth central authorities refractory materials nearly to be burnt 90%, use the taphole drilling machine opening at last again with oxygen lance.The blast furnace oxygen lance that uses has two kinds of schemes as follows at present:
A) directly use oxygen lance;
B) be coated with refractory mortar or fire-resistant coating on the oxygen lance surface.It as application number 200310105010.3 the disclosed high temperature-resistant coating oxygen blowpipe of Chinese utility model patent.
But prior art has following defective:
A, directly use its technical disadvantages of oxygen lance as follows:
1, pollute big.Thermal-flame melts impurity such as the S in the oxygen lance, P etc.Produce a large amount of dense smoke and obnoxious flavour, contaminate environment rapidly.
2, be not durable, the oxygen lance consumption is big.The new blast furnace opening of common 2500m3 is too big in 3t left and right sides consumption with no coating blast furnace opening oxygen lance.
3, labour intensity is big.It is fast that oxygen lance melts speed, and the stokehold workman needs the frequent oxygen lance of changing, and causes labour intensity big.
4, locate inaccurate.Uncoated oxygen lance is when burning the fire door stemming, and the oxidation easy deformation causes opening angle inaccurate, influences molten iron mouth effect.
B, the technical disadvantages of use refractory mortar or fire-resistant coating:
1, in conjunction with insecure.High-temperaure coating can't and oxygen lance between combine closely.Crack after causing burning, come off.Influenced its work-ing life greatly.
2, the thickness of anti-the material lacks handiness.Coating or refractory mortar, institute's smearing thickness are limited (surpassing 5mm peel off with regard to the cracking that makes moist easily), therefore can't pour into a mould reasonable opening oxygen lance according to blast-melted mouthful of size of difference.
The utility model content
Technical problem to be solved in the utility model just provides a kind of oxygen lance for blast furnaces, combines closely the thickness of anti-material handiness height, long service life between this oxygen lance for blast furnaces high-temperature-resistant layer and the oxygen lance.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of oxygen lance for blast furnaces, comprise the oxygen lance body, and it is characterized in that: described this external surface of oxygen lance is also poured into a mould and is connected with the compact high-strength refractory casting bed of material.
As preferably, the described compact high-strength refractory casting bed of material more than or equal to 20mm, is less than or equal to 30mm at the thickness on oxygen lance surface.The thickness of generally choosing is 20mm, 25mm or 30mm.The thickness of anti-material handiness height, compact high-strength refractory casting bed thickness is poured into a mould reasonable opening oxygen lance according to blast-melted mouthful of size of difference.
As preferably, also be provided with in the described compact high-strength refractory casting bed of material and prevent the explosion-proof fibrous texture of rimose.Described explosion-proof fibrous texture is with granular, wire or cotton-shaped being located in the described compact high-strength refractory casting bed of material.
As preferably, the design of described oxygen lance body two ends has the connected structure that is connected with other oxygen lances.Many oxygen lances can be coupled together from beginning to end, increase its length.
Further, described connected structure comprises the hydraucone structure and the corresponding pyramidal structure of the other end of oxygen lance body one end.Connect efficient and convenient.
The utility model has following beneficial effect owing to adopted technique scheme:
1, environmental protection.Used after the novel oxygen lance, do not had dense smoke and obnoxious flavour substantially and produce;
2, energy-conservation.Because greatly reduce the consumption of oxygen lance, just reduced the needed national energy of generation oxygen lance;
3, durable.Adopted novel high-strength refractory castable integral construction, anti-material is with not only tight with the oxygen lance surface bonding, or one well whole, the life-span of having improved product greatly.The new blast furnace opening of 2500m3 roughly needs 3t left and right sides oxygen lance, only needs about 12 later on but be used in oxygen lance surface construction compact high-strength refractory castable;
4, this falls.New blast furnace opening or overhaul once, it need be that purchase cost just needs about 1.65 ten thousand yuan (5500 yuan/ton of market prices) with 400 of oxygen lances (3 tons) that tapping outlet directly uses oxygen lance.And need consumption only to need 1.2 ten thousand (every about 25 kilograms of novel oxygen lances) at 12 (0.3 ton) costs with novel oxygen lance, save purchase cost and be blast furnace and nearly reduce by 30%.Be more than 30 times of common oxygen lance life-span the work-ing life of novel fireproof oxygen lance.In addition because the rapid minimizing of consumption, the decline of labour intensity can make each side such as labour cost reduce significantly.Be exactly to make the required manpower of these oxygen lances, material resources in addition for country saves.No matter comprehensive evaluation is to iron and steel enterprise, has still all reduced cost to society, creates profit;
5, low labour intensity.Need not frequently change the opening oxygen lance in the time of on-the-spot opening, significantly reduce working strength of workers;
6, opening rate of accuracy reached 100%.With the tripod location, novel blast furnace opening oxygen lance is placed on the spacer, so just can not be offset, it is accurate to reach out the molten iron mouth;
7, diversity.According to different blast furnace taphole demands, the compact high-strength refractory castable parcel of design different thickness on oxygen blast light pipe surface, so that open the molten iron mouth.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described:
Fig. 1 is the utility model blast furnace oxygen lance structural representation;
Fig. 2 is the left view of oxygen lance among Fig. 1.
Embodiment
As depicted in figs. 1 and 2, the embodiment of a kind of oxygen lance for blast furnaces of the utility model comprises oxygen lance body 1, and described this external surface of oxygen lance is also poured into a mould and is connected with the compact high-strength refractory casting bed of material 2.Wherein the compact high-strength refractory castable of the compact high-strength refractory casting bed of material 2 is ultra-fine micropowder compact high-strength high alumina castable or compact high-strength corundum castable, and has wherein comprised composite water-reducing agent again, and the material selection nano material.Also be provided with in the described compact high-strength refractory casting bed of material 2 and prevent the explosion-proof fibrous texture 3 of rimose.Described explosion-proof fibrous texture 3 is with granular, wire or cotton-shaped being located in the described compact high-strength refractory casting bed of material 2.The thickness thickness of the described compact high-strength refractory casting bed of material is less than or equal to 30mm more than or equal to 20mm.The thickness of generally choosing is 20mm, 25mm or 30mm.
General compact high-strength degree refractory castable uses ultra-fine, and high-grade micro mist is as the basis, and such product has two shortcoming: A, and no matter much amount of water is, and overall flow is not fine.Because the adding of high-grade powder causes mobile very poor, can't well flow by the long tube wall behind 50mm; The at high temperature easy product crackle of B, the refractory materials of compact high-strength bursts apart, and influences work-ing life.In order to solve the characteristics of mobile difference, we have specially introduced composite water-reducing agent, in the fineness and class that reduce powder, need not reduce amount of water, and the overall flow that has increased material simultaneously is convenient to construction.Peel off this problem in order to solve to ftracture easily when sharply heating up, this utility model has specially been introduced novel explosion-proof fiber, adds after this material, just can melt at 80 ℃, forms internal porosity before the water vapour evaporation.The swelling pressure that water vapour is formed cause the material cracking.And refractory castable is cast on the so little surface of oxygen lance, and cohesiveness is not fine.Nano material used just arrives in the middle of the prescription of material, make material firm be combined in oxygen blast light pipe surface.
As the improvement of the foregoing description, the design of described oxygen lance body two ends has the connected structure that is connected with other oxygen lances.Described connected structure comprises the hydraucone structure and the corresponding pyramidal structure of the other end of oxygen lance body one end.
The method of making blast furnace oxygen lance in the utility model the foregoing description comprises the steps a, and common oxygen lance for blast furnaces is carried out surperficial scrubbing; B locatees oxygen lance with mould; C, the system film promptly is poured into the mould injection forming with the compact high-strength refractory castable; D is to oxygen lance room temperature health 24h behind the injection forming; E, the demoulding; F puts into the shuttle kiln baking with oxygen lance after the demoulding, and temperature is set at 250 ℃.
Claims (7)
1. an oxygen lance for blast furnaces comprises oxygen lance body (1), it is characterized in that: described oxygen lance body (1) outside surface is also poured into a mould and is connected the compact high-strength refractory casting bed of material (2).
2. oxygen lance for blast furnaces according to claim 1 is characterized in that: the thickness of the described compact high-strength refractory casting bed of material (2) is less than or equal to 30mm more than or equal to 20mm.
3. oxygen lance for blast furnaces according to claim 2 is characterized in that: the thickness of the described compact high-strength refractory casting bed of material (2) is 20mm, 25mm or 30mm.
4. according to each described oxygen lance for blast furnaces of claim 1 to 3, it is characterized in that: the design of described oxygen lance body (1) two ends has the connected structure that is connected with other oxygen lances.
5. oxygen lance for blast furnaces according to claim 4 is characterized in that: described connected structure comprises the hydraucone structure and the corresponding pyramidal structure of the other end of oxygen lance body one end.
6. oxygen lance for blast furnaces according to claim 4 is characterized in that: also be provided with in the described compact high-strength refractory casting bed of material (2) and prevent the explosion-proof fibrous texture of rimose (3).
7. oxygen lance for blast furnaces according to claim 6 is characterized in that: described explosion-proof fibrous texture (3) is with granular, wire or cotton-shaped being located in the described compact high-strength refractory casting bed of material (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202013246U CN201626965U (en) | 2009-12-03 | 2009-12-03 | Oxygen lance for blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202013246U CN201626965U (en) | 2009-12-03 | 2009-12-03 | Oxygen lance for blast furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201626965U true CN201626965U (en) | 2010-11-10 |
Family
ID=43058358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202013246U Expired - Fee Related CN201626965U (en) | 2009-12-03 | 2009-12-03 | Oxygen lance for blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201626965U (en) |
-
2009
- 2009-12-03 CN CN2009202013246U patent/CN201626965U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CHANGXING YUNFENG FURNACE BURDEN CO., LTD. Free format text: FORMER OWNER: SHE CHENGQI Effective date: 20110519 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 313117 CHANGXING YUNFENG FURNACE BURDEN CO., LTD., MEISHAN INDUSTRIAL PARK, CHANGXING COUNTY, ZHEJIANG PROVINCE TO: 313117 MEISHAN INDUSTRIAL PARK, CHANGXING COUNTY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110519 Address after: 313117 Changxing County Meishan Industrial Park in Zhejiang Province Patentee after: Changxing Furnace Material Co., Ltd. Address before: 313117 Zhejiang province Changxing County Meishan Industrial Park Changxin Yunfeng charge Ltd. Patentee before: She Chengqi |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20171203 |