CN201376974Y - Homogeneous skimming cone for converter - Google Patents
Homogeneous skimming cone for converter Download PDFInfo
- Publication number
- CN201376974Y CN201376974Y CN200920126200U CN200920126200U CN201376974Y CN 201376974 Y CN201376974 Y CN 201376974Y CN 200920126200 U CN200920126200 U CN 200920126200U CN 200920126200 U CN200920126200 U CN 200920126200U CN 201376974 Y CN201376974 Y CN 201376974Y
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- Prior art keywords
- cone
- cone body
- slag
- homogeneous
- guiding rod
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Abstract
The utility model discloses a homogeneous skimming cone for converters. The homogeneous skimming cone comprises a circular cone body and a guiding rod, the cone body is inverted into big-end-down shape, a central hole is arranged on a central line of the cone body, a through hole is formed by the central hole in the cone body, the guiding rod thoroughly penetrates into the central hole, two ends of the guiding rod uniformly extend out of the cone body, a baffle block is arranged at the position of an opening at the upper end of the cone body, the guiding rod is fixed onto the cone body by welding the baffle block, a fireproof layer is sleeved on the lower portion of the guiding rod, and the lateral surface of the cone body is provided with at least three grooves. The homogeneous skimming cone is capable of ensuring skimming rate and improving the quality of steels. The homogeneous skimming cone adopts the structure of the guiding rod and restrains forming of eddy current above a steel tapping hole, thereby reducing the probability that steel slags are sucked into steel ladles along with the eddy current. Moreover, the homogeneous skimming cone has the advantages of simple structure, convenient manufacture, low cost and convenience for mass production and utilization.
Description
Technical field
The utility model relates to a kind of converter steelmaking pushing off the slag additional device, is specifically related to the slag stop cone that a kind of steel-making converter tap hole is used, and belongs to metallurgical technology field.
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, slag reduces ingot quality if enter the decline that can cause alloy scaling loss and steel quality in the ingot casting.
For many years, the used pushing off the slag utensil of domestic and international most of iron and steel enterprises converter is always based on slag retaining cap and cast iron shell slag-blocking ball.Along with making rapid progress of converter steeling technology, also more and more higher to the requirement of slag control under the converter tapping, traditional cast iron shell slag-blocking ball is subjected to the influence of joining day bigger, has faded in deficiency.If the time of adding slag-blocking ball is forward, molten steel has not flowed as yet, and the pushing off the slag spherical shell melts, causes stifled incessantly tap hole, the pushing off the slag failure; If the joining day causes converter to descend slag in a large number again after leaning on easily, influence steel quality.And slag-blocking ball in putting into stove after, sticking the wrapping up in of the local heavy-gravity slag of the quilt that has and be difficult to arrive the predetermined position, what have drifts with the tide along with fascinating of converter, is difficult to arrive the position of tap hole.Be called " slag retaining cone for converter tapping " in name, the patent No. is the disclosed slag stop cone of patent document of ZL02232989.7, Rotary-table is not stretched out in the metal-cored upper end of its inside, craft or mechanical manipulator can not grip, and cause using inconvenient; In addition, the material of its Rotary-table mainly is a high alumina refractories, lacks fire-resistant auxiliary material and wedding agent, cause its in conjunction with not firm, intensity the end of than, fire performance has much room for improvement.
The utility model content
In molten steel, be not easy the location at pushing off the slag utensil of the prior art, be corroded easily, shell is melted and causes bulk density change, and be subjected to the joining day to influence bigger deficiency, the utility model provides a kind of high-strength refractory degree that has, can accurately locate, suppress tap hole top eddy current and form, and not be subjected to the coverter pig homogeneous slag stop cone that the joining day influences.
The technical solution of the utility model is achieved in that a kind of coverter pig homogeneous slag stop cone, comprise round table-like cone and tail rod, it is characterized in that: described cone is inverted into up big and down small shape, the medullary ray of cone is provided with centre hole, tail rod through centre hole and up and down two ends all stretch out outside the cone, central hole is provided with block in the cone upper end, block is fixed on tail rod on the cone, bottom at tail rod is with flame retardant coating, and the side of cone is provided with at least three grooves.
Further technical characterictic is provided with shallow slot or screw thread on the surface of tail rod, is parabolic shape at the side of cone round platform partial contour, and the side of cone is provided with 3 grooves, 3 grooves uniform distribution on the circumference of side.
With respect to prior art, the utlity model has following advantage:
1, passes through the frustum cone structure of slag stop cone conical part, and design has the groove that is evenly distributed around the cone, can not influence the pushing off the slag effect greatly because of converter taphole weathers to become, on the one hand, when having gone out molten steel soon, by the accurate location of tail rod, the slag stop cone self-suspending is in the tap hole top, its groove can absorb the energy that molten steel rotation produces, and suppresses the formation of tap hole top eddy current, reduces slag and is inhaled into probability in the ladle with eddy current; On the other hand, because the existence of groove, even when whole spheroid blocks tap hole fully, molten steel also can flow out from groove smoothly, thereby makes tapping more thorough.
2, adopt the structure of tail rod, slag stop cone can accurately be located, can under the situation of tapping speed that do not slow down, guarantee the pushing off the slag rate, effectively improved steel quality;
3, this apparatus structure is simple, and is easy to make, and cost is low, is convenient to scale operation and use, and by 3,000,000 tons of calculating of present Chongqing iron and steel stock company annual output steel, the usage quantity of annual slag stop cone is 37500 covers, can reduce equipment cost in a large number.
Description of drawings
Fig. 1 is the front view of homogeneous coverter pig slag stop cone of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Among the figure, 1-cone, 2-tail rod, 3-block, 4-tail rod flame retardant coating, 5-centre hole, 6-groove.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Coverter pig homogeneous slag stop cone of the present utility model has overcome the factors such as bulk density change that traditional slag-blocking ball produces because of the shell fusing, it can add before having gone out steel soon in the stove, it is located in stove accurately, floating stable, and have higher refractoriness, can guarantee that cone was not etched in the short period of time.This has been proposed technically 3 requirements: the one, the whole cone mass distribution of requirement is even, and body is close between molten steel, slag; The 2nd, requirement has certain refractoriness, guarantees in use to be difficult for fusing; The 3rd, be evenly distributed with groove around the requirement cone.Slag stop cone of the present utility model, form by round table-like cone 1 and tail rod 2, described cone 1 is inverted into up big and down small shape, the medullary ray of cone 1 is provided with centre hole 5, centre hole 5 forms through hole in cone 1, tail rod 2 through centre hole 5 and up and down two ends all stretch out outside the cone 1, centre hole 5 places in cone 1 upper end are provided with block 3, block 3 is fixed on tail rod 2 on the cone 1 by welding, be with flame retardant coating 4 in the bottom of tail rod 2, the side of cone 1 is provided with at least three grooves 6; Block 3 is metal blocies.Be provided with shallow slot or screw thread on tail rod 2 surfaces, increased the contact area of tail rod 2, make refractory materials be not easy to come off with refractory materials.When having gone out molten steel soon, by the accurate location of tail rod 2, the slag stop cone self-suspending is in tap hole top, and its groove 6 can absorb the energy that the molten steel rotation produces, and suppresses the formation of tap hole top eddy current, reduces slag and is inhaled into probability in the ladle with eddy current; Owing to the existence of groove 6, even when whole cone 1 is blocked tap hole fully, molten steel also can flow out from groove 6 smoothly, thereby makes tapping more thorough simultaneously.
Described tail rod 2 is Deformed Steel Barss.Tail rod 2 in the present embodiment adopts the Deformed Steel Bars of long 1100mm, Φ 14mm, and shell is surrounded by refractory materials.
The side round platform partial contour of described cone 1 is a parabolic shape, and the bigger bottom portion of cone 1 area is Φ 250mm, high 415mm.
The side of described cone 1 is provided with 6, three grooves 6 of three grooves uniform distribution on the circumference of side, adopts the groove 6 of wide Φ 50mm, dark R20mm to be most preferred embodiment at this.
The main material of described cone 1 is selected iron alloy or cast particle for use, and fire-resistant auxiliary material adopts highly-purity magnesite small-particle and fine powder, and wedding agent is made up of pure calcium aluminate cement, magnesium chloride, water glass and SiO 2 superfine powder, and its volume density is controlled at 4.0～4.5g/cm
3Between.
In order to make slag stop cone can block tap hole when molten steel has been about to out, this just requires it must be suspended between molten steel and the slag interface, because the density of slag is 2.6～2.8g/cm
3, the density of molten steel is 6.8～7.0g/cm
3So the design volume density of slag stop cone should be at 2.7～6.9g/cm
3Between, according to the use experience of traditional slag-blocking ball, the volume density of choosing slag stop cone is 4.0～4.5g/cm
3Between.But,, must select high-density (greater than 6.0g/cm because general common material is difficult to satisfy for this reason
3) iron alloy or cast particle as main material, granularity is 1～15mm.Therefore consider that pushing off the slag cone 1 and tail rod 2 must possess certain refractoriness, and the converter finishing slag mainly is alkalescence, chooses not only high temperature resistant but also highly-purity magnesite small-particle and fine powder alkali-resistivity scouring are made fire-resistant auxiliary material.Granularity requirements is 1～3mm, 0～1mm and less than 200 order fine powders.
Also will select corresponding wedding agent when making slag stop cone, at first requirement can guarantee that the pushing off the slag cone has bonding strength preferably, in cargo handling process, be not easy to be damaged, and can snap cure, shorten demould time; Next is the quality that the wedding agent that adds can not influence molten steel.Amid all these factors, choose composite junction assembly system,, can produce the slag stop cone product of composite demand according to the result of use analysis of refractory materials with pure calcium aluminate cement, magnesium chloride, water glass and SiO 2 superfine powder.
The technological process of production of slag stop cone is: starting material, wedding agent, and------mixing, add water stirs, and---the dress mould---------put in storage in the demoulding in vibratory compaction by drying---assembling---check in weighing.Should place for some time naturally before the demoulding, can the demoulding after waiting to solidify, the pushing off the slag cone after the demoulding must carry out could using after the drying treatment.
Claims (5)
1, a kind of coverter pig homogeneous slag stop cone, comprise round table-like cone (1) and tail rod (2), it is characterized in that: described cone (1) is inverted into up big and down small shape, the medullary ray of cone (1) is provided with centre hole (5), tail rod (2) through centre hole (5) and up and down two ends all stretch out outside the cone (1), locate to be provided with block (3) at cone (1) upper end centre hole (5), block (3) is fixed on tail rod (2) on the cone (1), be provided with flame retardant coating (4) in the bottom of tail rod (2), the side of cone (1) is provided with at least three grooves (6).
2, coverter pig homogeneous slag stop cone according to claim 1, it is characterized in that: the surface of described tail rod (2) is provided with shallow slot or screw thread.
3, coverter pig homogeneous slag stop cone according to claim 1 is characterized in that: the side round platform partial contour of described cone (1) is a parabolic shape.
4, according to the arbitrary described coverter pig homogeneous slag stop cone of claim 1 to 3, it is characterized in that: the side of described cone (1) is provided with three grooves (6), and three grooves (6) are at the side uniform distribution.
5, according to claim 2 or 3 described coverter pig homogeneous slag stop cones, it is characterized in that: described tail rod (2) is a Deformed Steel Bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126200U CN201376974Y (en) | 2009-01-21 | 2009-01-21 | Homogeneous skimming cone for converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920126200U CN201376974Y (en) | 2009-01-21 | 2009-01-21 | Homogeneous skimming cone for converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201376974Y true CN201376974Y (en) | 2010-01-06 |
Family
ID=41517077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920126200U Expired - Lifetime CN201376974Y (en) | 2009-01-21 | 2009-01-21 | Homogeneous skimming cone for converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201376974Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268508A (en) * | 2011-08-02 | 2011-12-07 | 新兴铸管股份有限公司 | Converter slag stopper |
| CN108411062A (en) * | 2018-04-18 | 2018-08-17 | 宜兴市龙宸炉料有限公司 | Slag blocking cone of converter |
| CN111647711A (en) * | 2020-07-23 | 2020-09-11 | 北京利尔高温材料股份有限公司 | Slag stopping cone for conical converter tapping |
-
2009
- 2009-01-21 CN CN200920126200U patent/CN201376974Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268508A (en) * | 2011-08-02 | 2011-12-07 | 新兴铸管股份有限公司 | Converter slag stopper |
| CN108411062A (en) * | 2018-04-18 | 2018-08-17 | 宜兴市龙宸炉料有限公司 | Slag blocking cone of converter |
| CN111647711A (en) * | 2020-07-23 | 2020-09-11 | 北京利尔高温材料股份有限公司 | Slag stopping cone for conical converter tapping |
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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: CHONGQING KEJIAN METALLURGICAL MATERIALS CO.,LTD Free format text: FORMER OWNER: CHONGQING ZILI FIREPROOF MATERIALS CO., LTD. Effective date: 20100518 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 400080 NO.1, BAQIAO TOWN, DADUKOU DISTRICT, CHONGQING CITY TO: 400082 MINXINWUSHE, BAQIAO TOWN, DADUKOU DISTRICT, CHONGQING CITY |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100518 Address after: Eight people 400082 town Dadukou District of Chongqing new five agency Patentee after: Chongqing Kejian Metallurgy Material Co., Ltd. Address before: Eight, 400080 Chongqing Dadukou District No. 1 Patentee before: Chongqing Zili Refractory Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100106 |