CN2557529Y - Slag stop cone for converter steel-tapping - Google Patents
Slag stop cone for converter steel-tapping Download PDFInfo
- Publication number
- CN2557529Y CN2557529Y CN 02232989 CN02232989U CN2557529Y CN 2557529 Y CN2557529 Y CN 2557529Y CN 02232989 CN02232989 CN 02232989 CN 02232989 U CN02232989 U CN 02232989U CN 2557529 Y CN2557529 Y CN 2557529Y
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- CN
- China
- Prior art keywords
- slag
- cone
- stopping
- converter tapping
- converter
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- 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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Abstract
The utility model discloses a slag-stopping awl for converter tapping, which is an integrated object combined by a round table body with a big upper part and a small lower part arranged at the upper portion and an inverted cone body with a big upper part and a small lower part disposed at the lower portion, a metal core is arranged inside the utility model, and a refractory material layer is casted on the outside of the cast iron core; the center of gravity of the slag-stopping awl falls on the inverted cone portion; and the proportion of the slag-stopping awl is 3.5-6 tons per cubic meter. The slag-stopping awl for converter tapping provided by the utility model has a very simple structure, and the structure of the lower inverted cone body and the upper round table can ensure the almost 100 percent slag-stopping rate, meanwhile, the discharging speed of the molten steel will not be slowed down, and the slag-stopping awl has good stability under strong vortex flow at the tap hole, thus ensuring the reliability of slag stopping.
Description
Technical field
The utility model belongs to field of metallurgical machine, and a kind of parts of converter steelmaking device are provided, especially a kind of slag retaining cone for converter tapping.
Background technology
In steelmaking process, slag float over molten steel above, in the converter tapping process, especially after most of molten steel is discharged, molten steel can form stronger eddy current at the tap hole place, will descend slag inevitably, and slag enters the decline that can cause alloy scaling loss and steel quality in the ingot casting.The steel-making industry is being sought a kind of effective pushing off the slag method and apparatus for slag under the control converter always.The Chinese patent publication number is that CN2167801Y discloses the obconic floating plug of a kind of vertex of a cone, this floating plug self stability in molten steel is relatively poor, therefore, need the molten steel in converter have poured out and put into the tap hole place again after a greater part of, and under the effect of the stronger eddy current at tap hole place, still understand the phenomenon of run-off the straight, make some slags flow out converter and enter in the mold along with molten steel.Also have a kind of slag-blocking ball in the prior art, but it is because the blocking surface at the tap hole place in converter is a sphere, and area is less, the pushing off the slag effect is general only about 80%.In addition, some slag-blocking apparatus of the prior art has just blocked up tap hole when entering into above the tap hole of converter the back at the also remaining more molten steel of converter, cause and stay more molten steel in the converter, like this, cause waste on the one hand, improve production cost, in addition, also increased the cleaning difficulty of converter.For the molten steel in the emptying converter as best one can, be that structure such as groove is set on the outside surface of pushing off the slag part in the prior art, or make polygonal outline, flow out residue molten steel in the converter by the gap that forms between said structure and the tap hole.And, for fear of slagging tap, all can not be too big between pushing off the slag part and the tap hole by the gap that groove or polygonized structure stayed, such slag-blocking apparatus is blocked tap hole by the groove of establishing on the slag-blocking apparatus discharge molten steel, the speed of tapping will be subjected to bigger influence.
Summary of the invention
The purpose of this utility model is to improve deficiency of the prior art, provides a kind of simple in structure, easy to use, and good stability can guarantee not make slag to flow to slag retaining cone for converter tapping in the ladle.
The purpose of this utility model is achieved in that
The slag stop cone that the utility model provides is the object that the up big and down small inverted cone of a Rotary-table by its top, bottom is combined into one, and its inside is metal-cored, is preferably the cast iron core, is provided with refractory masses in the casting of the outside of this cast iron core; The center of gravity of this slag stop cone is on described inverted cone part; The proportion of this slag stop cone is at 3.5～6 tons/meter
3
The outline of the described truncated cone-shaped part on the top of this slag stop cone is preferably parabolic shape.
The slag stop cone that the utility model provides can be inserted above the tap hole by Slag pushing-off vehicle in tapping process after converter smelting finishes, in tapping process, form stronger eddy current above the tap hole, and the long inverted cone in the bottom of this slag stop cone partly makes the stability of slag stop cone very high, can run-off the straight under the influence of eddy current.After molten steel is discharged some, because the proportion of this slag stop cone is between the proportion of molten steel and slag, it is in the molten steel below the slag, and the part of long bottom inverted cone just reaches in the tap hole, but when just having reached in the tap hole, molten steel surplus in the converter is also many, and the end size of inverted cone part is less, tap hole stopped that area is less, can't obviously slow down and the speed of molten steel, but minimizing along with the last surplus of molten steel in the converter, the degree of depth that the inverted cone of this slag stop cone is partly goed deep into tap hole strengthens, and by the shape decision of its inverted cone, this slag stop cone increases gradually to the area that stops of tap hole, this makes the slag in the converter reduce with the possibility that more and more stronger eddy current flows out tap hole, when the molten steel emptying in the converter and since this slag stop cone be positioned at all the time slag below, so can drop on the tap hole fully immediately, tap hole is blocked up fully, some slags are discharged by tap hole.Therefore, the slag stop cone pushing off the slag rate of using the utility model to provide can reach 100%.On the inwall of converter, often be provided with the refractory masses of a nonmetal system, after converter was used repeatedly repeatedly, the refractory masses at tap hole place can come off, make tap hole enlarge, slag is flowed out, the gabarit of round platform preferably is parabola shaped, and the outlet shape that this profile enlarges after tap hole is come off has good anastomose property.
In order to make the molten steel emptying in the converter, can be on the circumferential wall of described round platform uniform some grooves.This slag stop cone is owing to have long inverted cone part, it does not make round platform block tap hole under also surplus situation that more molten steel arranged in can converter, have only in the converter molten steel when there is not much left the round platform on it just can block tap hole, so this slag stop cone can not influence the speed of molten steel, therefore, can shorten the cycle of steel-making.
The slag retaining cone for converter tapping that the utility model provides is simple in structure, but it is by the inverted cone of bottom and the frustum cone structure on top, both can guarantee it almost is 100% pushing off the slag rate, the velocity of discharge of molten steel does not slow down again simultaneously, and this slag stop cone stable fine under the stronger eddy current of tap hole can be guaranteed the reliability of pushing off the slag.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Outward appearance master's TV structure synoptic diagram of the slag stop cone that Fig. 1 provides for the utility model
Fig. 2 looks the sectional structure synoptic diagram for the master of this slag stop cone
Fig. 3 looks up structural representation for the outward appearance of this slag stop cone
Fig. 4 is the outward appearance plan structure synoptic diagram of this slag stop cone
Embodiment
Shown in Fig. 1,2,3 and 4, the slag stop cone 1 that the utility model provides comprises two parts: the up big and down small Rotary-table part 11 on top and the up big and down small inverted cone part 12 of bottom.Its inside is cast iron core 1a, is provided with magnesite refractory layer 1b in the casting of the outside of this cast iron core, and its main component can be a magnesia.
The length of the inverted cone part 12 of this slag stop cone and the length ratio of round platform 11 preferably 3: 1, the center of gravity of slag stop cone on inverted cone 12 parts, the distance of the end of distance of centre of gravity round platform part 11 preferably this slag stop cone total length 1/3.The proportion of this slag stop cone is at 4.5 tons/meter
3The outline of the Rotary-table part 11 on the top of this slag stop cone is a parabolic shape.
Four grooves 110 evenly are set on the side periphery of round platform 11.
Claims (7)
1, a kind of slag retaining cone for converter tapping is characterized in that: be the object that the up big and down small inverted cone of a Rotary-table by its top, bottom is combined into one, its inside is metal-cored, is provided with refractory masses in the casting of the outside of this cast iron core; The center of gravity of slag stop cone is on described inverted cone part: the proportion of slag stop cone is at 3.5～6 tons/meter
3
2, slag retaining cone for converter tapping according to claim 1 is characterized in that: the described metal-cored cast iron core that is.
3, slag retaining cone for converter tapping according to claim 1 is characterized in that: the outline of the truncated cone-shaped part on described top is a parabolic shape.
4, slag retaining cone for converter tapping according to claim 1 is characterized in that: described proportion is 4.5 tons/meter
3
5, slag retaining cone for converter tapping according to claim 1 is characterized in that: the length of described inverted cone part and the length ratio of round platform are 3: 1.
6, slag retaining cone for converter tapping according to claim 1 is characterized in that: the distance of the end of described distance of centre of gravity round platform part is 1/3 of a slag stop cone total length.
7, slag retaining cone for converter tapping according to claim 1 is characterized in that: describedly on round platform side periphery groove is set evenly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232989 CN2557529Y (en) | 2002-04-28 | 2002-04-28 | Slag stop cone for converter steel-tapping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02232989 CN2557529Y (en) | 2002-04-28 | 2002-04-28 | Slag stop cone for converter steel-tapping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2557529Y true CN2557529Y (en) | 2003-06-25 |
Family
ID=33708236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02232989 Expired - Fee Related CN2557529Y (en) | 2002-04-28 | 2002-04-28 | Slag stop cone for converter steel-tapping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2557529Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109880963A (en) * | 2019-03-25 | 2019-06-14 | 安徽云天冶金科技股份有限公司 | A kind of soft floating plug converter slag early period |
-
2002
- 2002-04-28 CN CN 02232989 patent/CN2557529Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109880963A (en) * | 2019-03-25 | 2019-06-14 | 安徽云天冶金科技股份有限公司 | A kind of soft floating plug converter slag early period |
| CN109880963B (en) * | 2019-03-25 | 2023-11-17 | 安徽云天冶金科技股份有限公司 | Soft slag stopper for early stage of converter slag discharging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |