CN202591608U - Under slag pushing device of novel steel ladle - Google Patents
Under slag pushing device of novel steel ladle Download PDFInfo
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- CN202591608U CN202591608U CN 201220246619 CN201220246619U CN202591608U CN 202591608 U CN202591608 U CN 202591608U CN 201220246619 CN201220246619 CN 201220246619 CN 201220246619 U CN201220246619 U CN 201220246619U CN 202591608 U CN202591608 U CN 202591608U
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- ladle
- molten steel
- pushing device
- slag
- retaining wall
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Abstract
The utility model discloses an under slag pushing device of a novel steel ladle, belonging to the technical field of ferrous metallurgy. The under slag pushing device is positioned between a steel ladle 1 and a tundish 8 and is respectively connected with the steel ladle 1 and the tundish 8 through an upper molten steel hole 2 and a lower molten steel hole 7. The under slag pushing device is characterized by being internally provided with an upper baffle wall 4 on one side of the upper molten steel hole 2, a lower baffle wall 5 is arranged on one side of the lower molten steel hole 7, and the under slag pushing device is segmented into a cavity A, a cavity B and a cavity C by using the upper baffle wall 4 and the lower baffle wall 5, and a sliding slag hole 6 is arranged in the lower part of the cavity A. The under slag pushing device can thoroughly solve the problem of slag discharge, is improved in cleanness of molten steel, is increased in metal yield, and improved in quality, and has the advantages of simpleness in processing, low cost, convenience for installation and long service life.
Description
Technical field
The utility model belongs to technical field of ferrous metallurgy, is specifically related to the skimming device between a kind of ladle and the tundish.
Background technology
In the production process of continuous casting process, molten steel flows into tundish from big bag through the long nozzle protective casing.Decline along with casting later stage liquid steel level can produce the vortex that confluxes, and grow in intensity, and promotes the emulsification of slag steel, makes slag flow into tundish with steel.The vortex that confluxes is in container current drainage process, and liquid is vertical earlier to descend, and when dropping to certain altitude, liquid just begins to compile to going out the head piece center line, and forms recessed whirlpool on the slag blanket surface, and liquid level at this moment is commonly referred to as critical and revolves height.It is indefinite to cruise in the position, recessed whirlpool that has just produced, and this moment, slag steel interface began to blur, and slag particle begins emulsification and get in the molten steel, but can not make slag with steel flow into the mouth of a river because position, recessed whirlpool is higher this moment.Along with the further decline of liquid level, recessed whirlpool is more and more obvious, and swirl velocity is also increasing, and until connecting the mouth of a river, liquid level at this moment is called the perforation height, and a large amount of slags has got into the mouth of a river.When liquid level drops to certain altitude; Originally to going out the fluid particle that the head piece center line confluxes; Because action of centrifugal force produces tangential velocity (angular speed); Make its movement locus more and more Off-Radial and developing into around the rotation of center line flow, up to finally developing into the funnel-form vortex that the perforation with strong swabbing action goes out head piece, cause whirlpool core volume gas or volume slag and descend.
The harm that ladle vortex volume slag brings mainly contains: the opourability of molten steel is worsened in (1), makes nozzle blocking, and casting can not normally be carried out; (2) cause the alloying element oxidation, and produce the degree of purity that field trash influences molten steel; (3) dissolved aluminum content descends in the strand, and tundish and long nozzle seriously corrode; (4) big cinder inclusion entering tundish causes the interior slag of tundish to gather, and causes harmful effect to casting process; (5) tundish cleaning work amount increases.In actual production, usually slag checkout gear down is being installed near the ladle bottom mouth of a river, when getting into the quantity of slag of molten steel in flowing when accounting for certain proportion; Close slide gate nozzle in advance; With the quantity of slag under reducing, but the method can make residual too much molten steel in the ladle, has reduced recovery rate of iron.
Domestic disclosed patent documentation has CN101774014A CN201755636U CN2471449CN2262967, CN2565566, CN201728365U etc., is the critical altitude incision that produces the vortex that confluxes from reducing mostly, reduces the quantity of slag down.Existing pushing off the slag technology mainly comprises following several kinds: 1, use band to suppress the skimming device of eddy current function; The 2nd, disturb eddy current through blowing at tapping hole; 3, be to adopt to keep away the pushing off the slag of slag cover method; 4 are to use mop.These technology have plenty of owing to bring certain difficulty to current technology, have plenty of owing to service life, and are all not fully up to expectations.
Summary of the invention
The utility model provides a kind of novel ladle underlying skimming device to the deficiency of prior art, can effectively eliminate the ladle roughing slag amount, improves recovery rate of iron, and simple, easy to operate, the long service life of constructing, cost are low.
The technical scheme that the utility model adopted is: novel ladle underlying skimming device; Between ladle 1 and tundish 8; And be connected with ladle 1 and tundish 8 through the filling pipe end 2 and the following mouth of a river 7 respectively, the inherent filling pipe end of novel ladle underlying skimming device 2 inboards are provided with top retaining wall 4, in following 7 inboards, the mouth of a river lower retaining wall 5 are set; Top retaining wall 4 is divided into A, B, three cavitys of C with lower retaining wall 5 with novel ladle underlying skimming device, in the bottom in A chamber slip slag notch 6 is set.
The lower end of lower retaining wall 5 was provided with steel passage 9, and the last interface of crossing steel passage 9 is lower than the lower surface of top retaining wall 4.
During casting, molten steel flows into the A chamber by ladle through filling pipe end, owing to UNICOM's effect, gets into the B chamber, and the top of crossing steel passage and lower retaining wall from lower retaining wall flows into the C chamber again, flows into tundish by the following mouth of a river at last.When ladle slag gets into the A chamber with molten steel because proportion is low, on float on top, A chamber, on top, A chamber, molten steel is owing to than great, flow out from the bottom of top retaining wall by the top retaining wall retaining.Thereby play control slag down, improve recovery rate of iron, the purpose of improving the quality of products.
The beneficial effect of the utility model is: can improve the Molten Steel Flow condition, maximum possible is removed nonmetallic inclusionsin steel; That is prevent short-circuit flow to reduce the dead band, improve grain direction, increase the time of staying of molten steel.We say by this device of design to a certain extent, increase the Molten Steel Flow route, have prolonged the profit reduction and reserving time, can effectively prolong floating foreign, reach the purpose of the cleanliness factor that improves molten steel.
(1) thoroughly solves slag problem down, improve the cleanliness factor of molten steel, improve recovery rate of iron, promote product quality;
(2) processing is simple, and cost is low;
(3) simple in structure, easy for installation, the life-span is high;
Description of drawings
Fig. 1 is the utility model structural representation;
Wherein: 1, ladle, 2, filling pipe end, 3, skimming device, 4, top retaining wall, 5, lower retaining wall, 6, slip slag notch 7, the mouth of a river down, 8, tundish, 9, cross the steel passage.
The specific embodiment
As shown in Figure 1; Novel ladle underlying skimming device; Between ladle 1 and tundish 8; And be connected with ladle 1 and tundish 8 through the filling pipe end 2 and the following mouth of a river 7 respectively, the inherent filling pipe end of novel ladle underlying skimming device 2 inboards (side near the following mouth of a river 7 is inboard) is provided with top retaining wall 4, and (side near filling pipe end 2 is the inboard) is provided with lower retaining wall 5 in following 7 inboards, the mouth of a river; Top retaining wall 4 is divided into A, B, three cavitys of C with lower retaining wall 5 with novel ladle underlying skimming device, in the bottom in A chamber slip slag notch 6 is set.
The lower end of lower retaining wall 5 was provided with steel passage 9, and the last interface of crossing steel passage 9 is lower than the lower surface of top retaining wall 4.
Molten steel is flowed in this novel ladle underlying skimming device 3 through filling pipe end 2 by ladle 1; At first molten steel gets into the A chamber, because the connection effect, molten steel enters into the B chamber immediately; Carrying out along with casting; Liquid level constantly rises, and molten steel flows into the C chamber from the top of crossing steel passage 9 and lower retaining wall 5, enters into tundish 8 by the following mouth of a river 7 at last.Because the bits light specific gravity in the ladle; Float on ladle top; So molten steel flows into earlier in the novel ladle underlying skimming device, when bits got into novel ladle underlying skimming device, the molten steel face was elevated to down the upper end height of slag blocking wall; Because the effect of last slag blocking wall, slag is hindered fully in the A chamber.In the casting gap, can open slip slag notch 6, slag is emitted.
Claims (2)
1. novel ladle underlying skimming device; Between ladle and tundish; And be connected with ladle (1) and tundish (8) through the filling pipe end (2) and the following mouth of a river (7) respectively; It is characterized in that: the inherent filling pipe end of novel ladle underlying skimming device (3) (2) inboard is provided with top retaining wall (4); In following inboard, the mouth of a river (7) lower retaining wall (5) is set, top retaining wall (4) is divided into A, B, three cavitys of C with lower retaining wall (5) with novel ladle underlying skimming device (3), and slip slag notch (6) is set in the bottom in A chamber.
2. novel ladle underlying skimming device according to claim 1, it is characterized in that: the lower end of lower retaining wall (5) was provided with steel passage (9), and the last interface of crossing steel passage (9) is lower than the lower surface of top retaining wall (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246619 CN202591608U (en) | 2012-05-29 | 2012-05-29 | Under slag pushing device of novel steel ladle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220246619 CN202591608U (en) | 2012-05-29 | 2012-05-29 | Under slag pushing device of novel steel ladle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202591608U true CN202591608U (en) | 2012-12-12 |
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ID=47309192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220246619 Expired - Fee Related CN202591608U (en) | 2012-05-29 | 2012-05-29 | Under slag pushing device of novel steel ladle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202591608U (en) |
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2012
- 2012-05-29 CN CN 201220246619 patent/CN202591608U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121212 Termination date: 20150529 |
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| EXPY | Termination of patent right or utility model |