CN203668444U - Slag blocking body for bottom pouring of tapping or refining ladle of electric furnace - Google Patents
Slag blocking body for bottom pouring of tapping or refining ladle of electric furnace Download PDFInfo
- Publication number
- CN203668444U CN203668444U CN201320861012.4U CN201320861012U CN203668444U CN 203668444 U CN203668444 U CN 203668444U CN 201320861012 U CN201320861012 U CN 201320861012U CN 203668444 U CN203668444 U CN 203668444U
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- CN
- China
- Prior art keywords
- slag
- electric furnace
- housing
- refining ladle
- slag pushing
- 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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- 239000002893 slag Substances 0.000 title claims abstract description 72
- 238000010079 rubber tapping Methods 0.000 title claims abstract description 24
- 238000007670 refining Methods 0.000 title claims abstract description 23
- 230000000903 blocking effect Effects 0.000 title abstract 7
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 58
- 239000010959 steel Substances 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 9
- 230000000630 rising effect Effects 0.000 claims description 20
- 239000011819 refractory material Substances 0.000 claims description 11
- 210000002683 foot Anatomy 0.000 claims description 6
- 230000008034 disappearance Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000005336 cracking Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 10
- 238000005266 casting Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 7
- 239000004568 cement Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 239000000395 magnesium oxide Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052749 magnesium Inorganic materials 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 229910001208 Crucible steel Inorganic materials 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 238000005056 compaction Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- -1 after mixing Substances 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Treatment Of Steel In Its Molten State (AREA)
Abstract
The utility model discloses a slag blocking body for bottom pouring of a tapping or refining ladle of an electric furnace. The slag blocking body comprises a shell (1), wherein a cavity (2) is formed in the shell (1); the gravity (11) of the slag blocking body is arranged below the geometric center of the shape of the slag blocking body; a process hole (11) is formed in the upper part of the shell (1); a cover plate (12) is welded at the process hole (11) in the shell (1); three or more supporting legs (3) are arranged at the bottom of the shell (1); the cavity (2) is filled with a dry light fireproof material (4); the shell (1) is spherical, hemispherical, cylindrical or circular-truncated-cone-shaped. According to the slag blocking body, the slag blocking time is long and the cracking can be avoided; molten steel can flow out completely and can be recycled; the stability is good; the structure is simple and the manufacturing process is convenient.
Description
Technical field
The utility model relates to the slag blocking-up utensil of the tapping of a kind of electric furnace with eccentric bottom or refining ladle rising pouring, and it is the slag pushing off body of a kind of electric furnace steel tapping or refining ladle rising pouring particularly.
Background technology
In steelmaking process, for prevent slag with molten steel (comprise molten iron, lower with, repeat no more) flow out, mainly adopt slag-blocking ball to float on molten steel, can block slag and flow out with molten steel, to guarantee the purity of molten steel.Current slag-blocking ball be mainly ball peripheral hardware one deck refractory materials or directly adopt refractory materials make, refractory materials mainly: the compositions such as magnesia, iron ore, sodium silicate binder, high-alumina cement; Its making method is mainly to combine by above composition different ratios or proportion, and then broken, stirring, puts into particular manufacturing craft by mixture, and on pressing machine, dry or sintering after extrusion forming, makes required slag-blocking ball.For example Chinese patent CN1219079C discloses a kind of homogeneous skimming ball and production method thereof, and it is made up of magnesia, iron ore, water glass caking agent, high-alumina cement; Production method is first the iron ore of magnesia refractory materials and different specific weight to be carried out to fragmentation, pulverizing, then sieve material is divided into various different grain sizes, magnesia, iron ore, high-alumina cement starting material are put into stirrer, and add water glass binder and mutually mix, after mixing, mixture is put into slag-blocking ball mould, vibratory compaction on shaking table, after moulding, put into the dry 5h-15h of loft drier, the naturally cooling demoulding, finished product is put into stockyard and is stored.Again for example, Chinese patent CN100374581C discloses a kind of full homogeneous barium-containing skimming ball for steel making in converter, and it belongs to the pushing off the slag material that converter steelmaking is used; Raw material and the weight percent content of its production are: huge sum of money stone 1-95, abrasive grit or steel grit 0-79, aluminate cement 5-15, the husky 0-5 of magnesium, by the mixing that adds water in proportion of huge sum of money stone, abrasive grit or steel grit, aluminate cement, magnesium sand, spheroid is made in the vibratory compaction of dress mould, is provided with the annular recesses that runs through spheroid largest circumference of square crossing at spherome surface; Its inside and outside homogeneous, whole ball even density, accurate positioning in molten steel.
Although these current slag-blocking balls have certain pushing off the slag effect, it has the following disadvantages:
(1), adopt the high temperature material (be also following refractory materials) such as magnesia (magnesium sand), high-alumina cement, cause cost higher because not reclaiming, waste resource;
(2), the use of sodium silicate binder has pollution to environment;
(3), refractory materials easily stops up electric steel and contracts out the mouth of a river, in the bag in the later stage that causes tapping, steel flow does not go out, and reduces molten steel Utilization rate, causes molten steel waste;
(4), refractory materials in molten steel easily cracking peel off, produce slag inclusion thereby pour into casting mold with molten steel, reduced casting quality; Slag-blocking ball has just lost pushing off the slag effect after melting; So this slag-blocking ball is difficult to use in refining ladle cast pushing off the slag;
(5) make this slag-blocking ball, need to make special mould, mould specification is relatively fixing; If formulate different size slag pushing off body, need change or again make corresponding mould, the cost that has high input is high;
(6) make this slag-blocking ball and need drop into press apparatus, cost of manufacture is high; And need long-time high-temperature roasting or dry, cause fabrication cycle long.
(7) each mix ingredients is difficult for stirring, and causes structural capacity poor, easily ftractures or scatters, and thoroughly loses pushing off the slag effect.
(8) due to melting molten steel be unlike material, so can naturally float, be real cored structure substantially, can be unstable in molten steel; Or need shaping-orientation bar, but complex structure.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of prior art and slag pushing off body that a kind of electric furnace steel tapping or refining ladle rising pouring are provided; Its pushing off the slag time is long, does not ftracture; Molten steel can flow totally, recoverable; Its good stability; It is simple in structure, easy to make.
The technical solution of the utility model is: the slag pushing off body of a kind of electric furnace steel tapping or refining ladle rising pouring, and it comprises housing; In housing, be provided with cavity, the center of gravity of slag pushing off body is positioned at the below of the geometric centre of the profile of slag pushing off body; Housing top is provided with technique mouth, is positioned at technique mouth place and is welded with cover plate on housing.
The further technical scheme of the utility model is: described cover plate is positioned at the inner or outer edge of technique mouth.
The utility model further technical scheme is: the bottom of described housing is provided with three above feets.
The utility model further technical scheme is: in described cavity, be also filled with dry lightweight refractory.
The further technical scheme of the utility model is: the profile of described housing is spherical in shape, and housing is transitioned into bottom heavy wall gradually from top thin-walled.
The further technical scheme of the utility model is: described housing is the segment-shaped that top is provided with disappearance part.
The further technical scheme of the utility model is: described housing is the segment-shaped that is equipped with up and down disappearance part.
The further technical scheme of the utility model is: described housing is cylindrical.
The further technical scheme of the utility model is: described housing is truncated cone-shaped.
Electric furnace of the present invention is mainly the electric arc furnace of converter and eccentric bottom tapping, and certainly, it can be also other similar electric furnace.
The utility model compared with prior art has following features:
(1), the center of gravity of housing is positioned at the below of the profile geometric centre of housing, can prevent from using time, slag pushing off body, in steel welter, can improve the stability of pushing off the slag.
(2), choose the steel that fusing point is slightly high and make slag pushing off body material, because fusing point is high, be difficult for fusing, can not ftracture, therefore pushing off the slag is effective; Before not melting completely, slag pushing off body there is pushing off the slag effect always, the pushing off the slag time is long, when pushing off the slag according to the thawing speed of the duration of pouring and slag pushing off body, can suitably increase slag pushing off body quantity, guarantee that steel (iron) slag whole process is blocked in ladle, steel (iron) liquid in bag can all flow out and not affect steel quality, therefore can realize the pushing off the slag of cast whole process, improve again molten steel Utilization rate, do not melted slag pushing off body recoverable.
(3), adopt single metallic steel material, the composition of slag pushing off body partial melting enters the quality that can not affect this steel casting after casting metal liquid (molten metal of cast steel foundry goods), because all belong to steel, can not pollute casting metal liquid, guaranteed the purity of casting metal liquid, more not can as traditional refractory materials do slag-blocking ball in molten steel, ftracture peel off with molten steel flow into casting mold cause steel casting slag inclusion.
(4), design internal cavity, can pass through the density of design modifying slag pushing off body, be convenient to can float on molten steel in use, realize slag stopping function.
(5), feet can allow molten steel in the time soon having flowed, and makes slag pushing off body support, between slag pushing off body and molten steel outlet, form clearance channel at stove (bag) at the end, so that steel flow obtains totally, after black furnace, easily clears up slag pushing off body on the other hand.
(6), be also filled with the refractory materials of dry lightweight in cavity, to guarantee that slag pushing off body uses safety.
In order to be illustrated more clearly in the utility model, enumerate following examples, but it is without any restrictions to scope of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment 1;
Fig. 2 is the upward view of Fig. 1;
Fig. 3 is the structural representation of the another kind of form of the utility model embodiment 1;
Fig. 4 is the structural representation of the utility model embodiment 2;
Fig. 5 is the structural representation of the another kind of form of the utility model embodiment 2;
Fig. 6 is the structural representation of the utility model embodiment 3;
Fig. 7 is the structural representation of the another kind of form of the utility model embodiment 3;
Fig. 8 is the structural representation of the utility model embodiment 4;
Fig. 9 is the upward view of Fig. 8;
Figure 10 is the structural representation of the another kind of form of the utility model embodiment 4;
Figure 11 is the structural representation of the utility model embodiment 5;
Figure 12 is the structural representation of the another kind of form of the utility model embodiment 5;
Embodiment
As shown in Figure 1-2, the slag pushing off body of a kind of electric furnace steel tapping or refining ladle rising pouring, it comprises housing 1, the profile of housing 1 is spherical in shape, in housing 1, be provided with spherical hollow space 2, to reduce the mean density of slag pushing off body, be convenient to can float in use on molten steel, housing 1 is transitioned into bottom heavy wall gradually from top thin-walled, be that the geometric centre 21 of cavity 2 and the center of gravity 13 of housing 1 do not overlap, the geometric centre 21 of cavity 2 is positioned at the top (so that orientation of used time) of the center of gravity 11 of housing 1, to make the center of gravity 11 of whole slag pushing off body be positioned at the below of the geometric centre of the profile of slag pushing off body, with the center of gravity of guaranteeing whole slag pushing off body in bottom, can guarantee that like this pushing off the slag physical efficiency stably floats in molten steel, can prevent from using time, slag pushing off body be in steel welter, certainly, cavity 2 also can design mix every several cavitys, this is only that simple equivalent technologies is replaced, housing 1 top is provided with technique mouth 11, on housing 1, be positioned at technique mouth 11 places and be welded with cover plate 12, cover plate 12 can be positioned at technique mouth 11 (as shown in Figure 1), also can be positioned at technique mouth 11 outer edge places (as shown in Figure 3), in order to block technique mouth 11, the bottom of housing is provided with the feet 3 of three above (being generally 3-6), feet 3 can allow molten steel in the time soon having flowed, prop up housing 1, between housing 1 and molten steel outlet, leaves gap, facilitates steel flow to obtain totally, after black furnace, easily clear up slag pushing off body on the other hand, housing 1, cover plate 12, feet 3 all adopt the cast steel material of homogeneity to be made.
In cavity 2, be also filled with the refractory materials 4 of dry lightweight, to guarantee that slag pushing off body uses safety.
Embodiment 2
As shown in Fig. 4-5, a slag pushing off body for electric furnace steel tapping or refining ladle rising pouring, the key distinction of itself and embodiment 1 is: housing 1 be segment-shaped, the top of housing 1 is provided with a platform 14, technique mouth 11 is positioned at platform 14 places, and the cavity 2 in it adapts with its profile; Other structure technology feature is with embodiment 1.
Embodiment 3
As shown in Fig. 6-7, the slag pushing off body of a kind of electric furnace steel tapping or refining ladle rising pouring, the key distinction of itself and embodiment 1 is: housing 1 for being equipped with up and down the segment-shaped of disappearance part, the top that is housing 1 is provided with a platform 14, technique mouth 11 is positioned at platform 14 places, and the bottom of housing 1 is also provided with platform 15; Cavity 2 in it adapts with its profile; Other structure technology feature is with embodiment 2.
Embodiment 4
As shown in Fig. 8-10, the slag pushing off body of a kind of electric furnace steel tapping or refining ladle rising pouring, the key distinction of itself and embodiment 1 is: housing 1 is cylindrical, the cavity 2 in it adapts with its profile; Other structure technology feature is with embodiment 1.
Embodiment 5
As shown in Figure 11-12, the slag pushing off body of a kind of electric furnace steel tapping or refining ladle rising pouring, the key distinction of itself and embodiment 1 is: the truncated cone-shaped that housing 1 is big up and small down, the cavity 2 in it adapts with its profile; Other structure technology feature is with embodiment 1.
The utility model is not limited to above-mentioned concrete structure, within the pushing off the slag utensil that is positioned at the center of gravity 13 of slag pushing off body as long as the interior geometric centre 21 with cavity 2 and cavity 2 just drops on protection domain of the present utility model.
Claims (10)
1. a slag pushing off body for electric furnace steel tapping or refining ladle rising pouring, is characterized in that: it comprises housing (1); In housing (1), be provided with cavity (2); The center of gravity (11) of slag pushing off body is positioned at the below of the geometric centre of the profile of slag pushing off body; Housing (1) top is provided with technique mouth (11), is positioned at technique mouth (11) and locates to be welded with cover plate (12) on housing (1).
2. the slag pushing off body of electric furnace steel tapping according to claim 1 or refining ladle rising pouring, is characterized in that: described cover plate (12) is positioned at the inner or outer edge of technique mouth (11).
3. the slag pushing off body of electric furnace steel tapping according to claim 1 and 2 or refining ladle rising pouring, is characterized in that: the bottom of described housing (1) is provided with three above feets (3).
4. the slag pushing off body of electric furnace steel tapping according to claim 1 and 2 or refining ladle rising pouring, is characterized in that: the refractory materials (4) that is filled with dry lightweight in described cavity (2).
5. the slag pushing off body of electric furnace steel tapping according to claim 1 and 2 or refining ladle rising pouring, is characterized in that: the profile of described housing (1) is spherical in shape, and housing (1) is transitioned into bottom heavy wall gradually from top thin-walled.
6. the slag pushing off body of electric furnace steel tapping according to claim 1 and 2 or refining ladle rising pouring, is characterized in that: described housing (1) lacks segment-shaped partly for top is provided with.
7. the slag pushing off body of electric furnace steel tapping according to claim 1 and 2 or refining ladle rising pouring, is characterized in that: described housing (1) is for being equipped with up and down the segment-shaped of disappearance part.
8. the slag pushing off body of electric furnace steel tapping according to claim 1 and 2 or refining ladle rising pouring, is characterized in that: described housing (1) is cylindrical.
9. the slag pushing off body of electric furnace steel tapping according to claim 1 and 2 or refining ladle rising pouring, is characterized in that: described housing (1) is truncated cone-shaped.
10. the slag pushing off body of electric furnace steel tapping according to claim 3 or refining ladle rising pouring, is characterized in that: described housing (1) is truncated cone-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861012.4U CN203668444U (en) | 2013-12-17 | 2013-12-17 | Slag blocking body for bottom pouring of tapping or refining ladle of electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320861012.4U CN203668444U (en) | 2013-12-17 | 2013-12-17 | Slag blocking body for bottom pouring of tapping or refining ladle of electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203668444U true CN203668444U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320861012.4U Expired - Fee Related CN203668444U (en) | 2013-12-17 | 2013-12-17 | Slag blocking body for bottom pouring of tapping or refining ladle of electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203668444U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906332A (en) * | 2017-04-06 | 2017-06-30 | 山东钢铁股份有限公司 | A kind of mop and mop manufacture craft |
-
2013
- 2013-12-17 CN CN201320861012.4U patent/CN203668444U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106906332A (en) * | 2017-04-06 | 2017-06-30 | 山东钢铁股份有限公司 | A kind of mop and mop manufacture craft |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140625 Termination date: 20161217 |