CN214300233U - Split type steel-tapping hole brick for converter sliding plate slag blocking and slag blocking system - Google Patents
Split type steel-tapping hole brick for converter sliding plate slag blocking and slag blocking system Download PDFInfo
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- CN214300233U CN214300233U CN202120368945.4U CN202120368945U CN214300233U CN 214300233 U CN214300233 U CN 214300233U CN 202120368945 U CN202120368945 U CN 202120368945U CN 214300233 U CN214300233 U CN 214300233U
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Abstract
The utility model discloses a converter slide pushing off slag is with split type tapping hole brick and pushing off slag system relates to converter tapping technical field. The tapping hole brick comprises an inner nozzle brick and a first brick, wherein the inner nozzle brick comprises an inner nozzle brick body and a first iron shell sleeved outside the inner nozzle brick body, and at least three first positioning bulges are uniformly distributed on the first iron shell along the circumferential direction; the first brick comprises a first brick body and a second iron shell sleeved on the outer side of the first brick body, and at least three second positioning bulges are uniformly distributed on the second iron shell along the circumferential direction. The aperture of the first brick of the tap hole, the inner nozzle brick and the connecting plate for the sliding plate slag stopping can be ensured to be precisely matched, the concentricity of installation is ensured, the crack diffusion in the use process of the first brick and the inner nozzle brick is prevented, and the problem of easy steel leakage between the inner nozzle brick and the inner sliding plate brick and between the first brick and the inner nozzle brick is solved.
Description
Technical Field
The utility model relates to a converter tapping technical field, concretely relates to converter slide pushing off slag is with split type tapping hole brick and pushing off slag system.
Background
The converter sliding gate slag blocking technology opens or closes the steel tapping hole in a mechanical or hydraulic mode to achieve the purpose of slag blocking, early-stage and later-stage slag discharging can be effectively controlled, the slag blocking success rate can reach 100%, compared with other slag blocking technologies, the slag blocking rate is obviously improved, and the safety and the reliability are greatly improved. The steel-tapping hole brick is used as an important component of a refractory material of a converter slag-stopping system, the service life of the steel-tapping hole brick directly influences the production efficiency of the converter, the steel-tapping hole brick for slag stopping of the converter at present in China is designed to be a split type, and the steel-tapping hole brick comprises a first brick, an inner nozzle brick and a belly brick. Because the service lives of the slag-stopping sliding plate, the first brick and the inner nozzle brick are asynchronous, the inner nozzle brick and the first brick are frequently exposed in rapidly cooled air during heat exchange and are easy to crack due to expansion with heat and contraction with cold in a common sliding plate furnace of 12-18, an inner nozzle brick furnace of 60-150 and a first brick furnace with the service life of 300; moreover, the inner nozzle brick and the initial brick are generally made of magnesia carbon, and have large thermal expansion coefficient, which aggravates the generation of cracks, so the design of the inner nozzle brick and the initial brick needs to consider the prevention of the crack from spreading.
At present, the outer parts of the domestic tap hole head brick and the inner nozzle brick are generally designed by iron hoops, for example, Chinese patent CN201920107686.2 discloses an inner nozzle brick, which comprises a body and a fastener for fastening the body, wherein the body is provided with a steel flowing hole which penetrates through the thickness direction of the body and is used for enabling molten steel to flow out, and the fastener is arranged at the peripheral part of the body; the lower end of the body is provided with a flat opening used for being matched with the sliding plate brick, and the fastening piece is an iron hoop sleeved on the peripheral part of the body. Then like chinese patent CN201921479476.2 discloses a novel inner nozzle brick for converter pushing off slag, including the inner nozzle brick body, the one end of inner nozzle brick body inwards caves in and forms and is connected female mouth with inner slide brick complex, and its other end outwards bulges and forms and is connected the secondary mouth with tapping hole complex, and the one end left and right sides symmetry processing that inner nozzle brick body and inner slide brick link to each other has first location ear groove, and the bilateral symmetry processing has the second location ear groove about the one end that inner nozzle brick body and inner slide brick link to each other, the periphery of inner nozzle brick body is fixed with the hoop.
By analyzing the structure of the patent, on one hand, the design is difficult to achieve the precise matching with the aperture of the connecting plate of the slag stopping and slag stopping system; on the other hand, the gaps among the first brick, the inner nozzle brick and the connecting plate are large, the iron hoop only hoops a local brick body, the circumferential diffusion of cracks is difficult to be effectively controlled, and when the cracks exceed the standard, steel leakage is easy to occur between the inner sliding plate brick and the inner nozzle brick and between the inner nozzle brick and the first brick, so that the production efficiency of the converter is influenced.
SUMMERY OF THE UTILITY MODEL
1. Problems to be solved
To the not high and easy problem that produces the crackle of current first brick of and interior nozzle brick installation accuracy, the utility model aims to provide a converter slide pushing off slag is with split type tapping hole brick can make and reach the accurate cooperation between first brick and the connecting plate, between interior nozzle brick and the connecting plate, has controlled the diffusion of crackle effectively, effectively guarantees the safety in utilization of interior nozzle brick and first brick, prevents because the influence of body crackle diffusion to production.
The utility model also aims to provide a converter slide pushing off slag system for pushing off slag, guarantee the security and the continuity of converter production.
2. Technical scheme
In order to solve the above problem, the utility model discloses the technical scheme who adopts as follows:
the utility model discloses a split type tapping hole brick for pushing off slag of converter slide, including inner nozzle brick and first brick, the inner nozzle brick includes inner nozzle brick body and suit in the first iron-clad outside the inner nozzle brick body, the first iron-clad has at least three first locating archs along the circumference evenly distributed, it is filled with first fire clay to fill between inner nozzle brick body and the first iron-clad; one end of the inner nozzle brick body is inwards sunken to form a first connecting female port matched with the inner sliding plate brick, and the other end of the inner nozzle brick body is outwards protruded to form a first connecting sub port matched with the head brick; the first iron shell is consistent with the inner nozzle brick body in height; the first brick comprises a first brick body and a second iron shell sleeved outside the first brick body, at least three second positioning bulges are uniformly distributed on the second iron shell along the circumferential direction, and second fire mud is filled between the first brick body and the second iron shell; one end of the head brick body is inwards sunken to form a second female connecting port matched with the inner nozzle brick, and the other end of the head brick body is inwards sunken to form a third female connecting port matched with a belly brick of the steel tapping hole; the second iron shell is consistent with the height of the first brick body.
In a possible embodiment of the present invention, the first and second iron shells have a thickness of 1.5-3 mm; the aperture of the first positioning bulge and the aperture of the second positioning bulge are 1mm, and the depth of the first positioning bulge and the second positioning bulge is 1.5 mm.
In a possible embodiment of the present invention, the first positioning protrusion is located at the middle of the first iron shell; the second positioning bulge is positioned on the second iron shell close to the second connecting female port.
In a possible embodiment of the present invention, the first sludge and the second sludge are selected from phosphoric acid or aluminum dihydrogen phosphate combined corundum sludge, and the thickness of the first sludge or the second sludge is designed to be 1-3 mm.
In a possible embodiment of the present invention, the inner nozzle brick body, the head brick body and the steel tapping hole web brick are made of magnesia carbon.
The utility model also provides a novel converter pushing off slag system, include from interior to exterior consecutive tapping hole abdomen brick, tapping hole brick, interior slide plate brick, outer slide plate brick and outer water gap brick, tapping hole brick adopt foretell tapping hole brick.
3. Advantageous effects
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the utility model discloses a split type tapping hole brick is used in converter slide pushing off slag, interior nozzle brick external design first iron-clad, evenly distributed has at least three first location arch around the first iron-clad, can guarantee the concentricity of interior nozzle brick body and first iron-clad, select the corundum fireclay that phosphoric acid or aluminium dihydrogen phosphate combine between interior nozzle brick body and the first iron-clad, guarantee the intensity of cover shell fireclay, cover shell interior nozzle brick can control body crack diffusion effectively in the use, solved the problem that the crack is great easily causes the bleed-out between interior nozzle brick and the interior slide brick in the use of interior nozzle brick, be favorable to guaranteeing converter production's continuity and security;
(2) the utility model discloses a split type tapping hole brick is used in converter slide pushing off slag, first brick external design second iron casing, evenly distributed has at least three second location arch around the second iron casing, can guarantee the concentricity of first brick body and second iron casing, select the corundum fire clay that phosphoric acid or aluminium dihydrogen phosphate combine between first brick body and the second iron casing for use, guarantee the intensity of cover shell fire clay, cover shell first brick can effectively control the body crack diffusion in the use, solved the problem that the crackle is great easily causes the bleed-out between first brick and the inner nozzle brick in the use of first brick, be favorable to guaranteeing converter production's continuity and security;
(3) the utility model discloses a converter slide pushing off slag is with split type tapping hole brick optimizes through first brick and interior mouth of a river brick structure to guaranteed the accurate cooperation of first brick, interior mouth of a river brick and connecting plate, not only avoided first brick, interior mouth of a river brick and the problem of connecting plate decentraction, controlled the crackle diffusion moreover well, and then solved the problem that each position seam crossing worn the steel easily.
Drawings
FIG. 1 is a schematic structural view of a tap hole of the present invention;
fig. 2 is a schematic structural view of the inner nozzle brick of the present invention;
FIG. 3 is a schematic structural view of the head brick of the present invention;
FIG. 4 is a schematic perspective view of the head brick of the present invention;
fig. 5 is a schematic perspective view of a second iron shell according to the present invention;
FIG. 6 is a schematic structural view of the slag bridge system of the present invention;
FIG. 7 is a schematic view of the installation structure of the slag stopping system of the present invention.
The notation in the figure is:
100. an inner nozzle brick; 101. an inner nozzle brick body; 102. first fire clay; 103. a first positioning projection; 104. a first iron shell; 105. a first connecting female port; 106. a first connector sub-port;
200. first brick; 201. a head brick body; 202. second fire clay; 203. a second positioning projection; 204. a second iron shell; 205. a second connecting female port; 206. a third connecting female port;
300. an inner slide plate brick; 400. an outer slide plate brick; 500. an outer nozzle brick; 600. tapping hole belly bricks; 700. a connecting plate.
Detailed Description
The present invention will be further described with reference to the following specific embodiments.
Example 1
As shown in fig. 1 to 7, the split type tap hole brick for slag blocking of a converter sliding plate of the present embodiment includes an inner nozzle brick 100 and a first brick 200, where the inner nozzle brick 100 includes an inner nozzle brick body 101 and a first iron shell 104 sleeved outside the inner nozzle brick body 101, four first positioning protrusions 103 are uniformly distributed on the first iron shell 104 along a circumferential direction, the four first positioning protrusions are distributed along the circumferential direction at 90 °, and a first fire clay 102 is filled between the inner nozzle brick body 101 and the first iron shell 104; one end of the inner nozzle brick body 101 is inwards sunken to form a first connecting female port 105 matched with the inner sliding brick 300, and the other end of the inner nozzle brick body is outwards protruded to form a first connecting sub port 106 matched with the head brick 200; the first iron shell 104 is consistent with the inner nozzle brick body 101 in height; the primary brick 200 comprises a primary brick body 201 and a second iron shell 204 sleeved outside the primary brick body 201, four second positioning protrusions 203 are uniformly distributed on the second iron shell 204 along the circumferential direction, the four second positioning protrusions are distributed along the circumferential direction at 90 degrees, and second fire mud 202 is filled between the primary brick body 201 and the second iron shell 204; one end of the head brick body 201 is inwards recessed to form a second connecting female port 205 matched with the inner nozzle brick 100, and the other end of the head brick body is inwards recessed to form a third connecting female port 206 matched with the belly brick 600 of the tap hole; the second iron shell 204 is consistent with the height of the first brick body 201.
It should be noted that, because there are gaps between the inner nozzle brick body 101 and the first iron casing 104 and between the first brick body 201 and the second iron casing 204, in the actual installation process, there are installation deviations between the first iron casing 104 and the second iron casing 204, which results in that the inner nozzle brick 100 and the first brick 200 cannot be tightly fitted with the connecting plate 700, by providing positioning protrusions in the circumferential direction of the first iron casing 104 and the second iron casing 204, the installation deviations can be reduced as much as possible by making full use of the positioning function of the centers of the positioning protrusions, and meanwhile, the first mortar 102 is filled between the inner nozzle brick body 101 and the first iron casing 104, the second mortar 202 is filled between the first brick body 201 and the second iron casing 204, and the tap brick can be precisely fitted with the aperture of the connecting plate 700 to ensure the concentricity with the connecting plate 700 during installation (for example, the aperture design of the connecting plate 700 is 360 ± 0.5mm, the first iron casing 104, the inner nozzle brick 100 and the first brick 200, the first iron casing 104, and the second iron casing 204, The outer diameter of the second iron shell 204 is designed to be 359 +/-0.5 mm), and the first iron shell 104 and the second iron shell 204 can effectively limit circumferential diffusion of cracks of the first nozzle brick body 201 and the inner nozzle brick body 101, so that the problem that steel is easily penetrated due to large cracks between the inner sliding plate brick 300 and the inner nozzle brick 100 and between the inner nozzle brick 100 and the first brick 200 is solved.
In the present embodiment, the thickness of the first iron shell 104 and the second iron shell 204 is 1.5-3 mm; the aperture of the first positioning protrusion 103 and the second positioning protrusion 203 is 1mm, the depth is 1.5mm, and preferably, the first positioning protrusion 103 and the second positioning protrusion 203 are oblong. Further, the first positioning protrusion 103 is located in the middle of the first iron shell 104; the second positioning protrusion 203 is located on the second iron shell 204 close to the second connecting female port 205.
In this embodiment, the first fireclay 102 and the second fireclay 202 are made of phosphoric acid or aluminum dihydrogen phosphate combined with corundum fireclay, the thickness of the first fireclay 102 or the second fireclay 202 is designed to be 1-3mm, and in the actual use process, the thickness of the fireclay is generally 3 mm.
As shown in fig. 6, the present embodiment further provides a novel converter slag stopping system, which comprises a tap hole web brick 600, a tap hole brick, an inner slide plate brick 300, an outer slide plate brick 400 and an outer tap hole brick 500, which are sequentially connected from inside to outside, and the tap hole brick adopts the above tap hole brick. The tap hole brick comprises an inner nozzle brick 100 and a head brick 200, wherein the inner nozzle brick 100 is matched with an inner sliding plate brick 300 through a first connecting female hole 105; the head brick 200 is fitted with the inner nozzle brick 100 through the second female connection port 205 and with the tap hole belly brick 600 through the third female connection port 206.
As shown in fig. 7, the inner nozzle brick 100 is fixed to a slag stopper connecting plate 700 by two pressing plates and screws. The tap hole head brick 200, the inner nozzle brick 100 and the tap hole belly brick 600 are made of magnesia carbon, the specific components of the magnesia carbon are consistent with those of a low-carbon magnesia carbon sliding plate disclosed by 201610943430.6, and the physical and chemical indexes are as follows: MgO is more than or equal to 76 percent, C is more than or equal to 10 percent, apparent porosity is less than or equal to 6 percent, and volume density is more than or equal to 2.95g/cm3And the normal-temperature compressive strength is more than or equal to 35 MPa.
Claims (6)
1. A split type steel tapping hole brick for slag blocking of a converter sliding plate comprises an inner nozzle brick (100) and a first brick (200), and is characterized in that the inner nozzle brick (100) comprises an inner nozzle brick body (101) and a first iron shell (104) sleeved outside the inner nozzle brick body (101), at least three first positioning bulges (103) are uniformly distributed on the first iron shell (104) along the circumferential direction, and first fire clay (102) is filled between the inner nozzle brick body (101) and the first iron shell (104); one end of the inner nozzle brick body (101) is inwards sunken to form a first connecting female port (105) matched with the inner sliding plate brick (300), and the other end of the inner nozzle brick body is outwards protruded to form a first connecting sub port (106) matched with the first brick (200); the first iron shell (104) is consistent with the inner nozzle brick body (101) in height;
the primary brick (200) comprises a primary brick body (201) and a second iron shell (204) sleeved on the outer side of the primary brick body (201), at least three second positioning bulges (203) are uniformly distributed on the second iron shell (204) along the circumferential direction, and second fire mud (202) is filled between the primary brick body (201) and the second iron shell (204); one end of the first brick body (201) is inwards sunken to form a second connecting female hole (205) matched with the inner nozzle brick (100), and the other end of the first brick body is inwards sunken to form a third connecting female hole (206) matched with the steel tapping hole belly brick (600); the second iron shell (204) is consistent with the height of the first brick body (201).
2. The split tap hole brick for converter tap hole stopper according to claim 1 wherein the first iron shell (104) and the second iron shell (204) have a thickness of 1.5-3 mm; the aperture of the first positioning bulge (103) and the second positioning bulge (203) is 1mm, and the depth of the first positioning bulge is 1.5 mm.
3. The split tap hole brick for converter slide plate slag blocking according to claim 2, wherein the first positioning projection (103) is positioned at the middle part of the first iron shell (104); the second positioning protrusion (203) is positioned on the second iron shell (204) close to the second connecting female port (205).
4. The split type tap hole brick for converter sliding plate slag blocking according to claim 3, characterized in that the first fire clay (102) and the second fire clay (202) are phosphoric acid or aluminum dihydrogen phosphate combined corundum fire clay, and the thickness of the first fire clay (102) or the second fire clay (202) is designed to be 1-3 mm.
5. The split type tap hole brick for pushing off slag by a converter sliding plate according to claim 4, wherein the inner nozzle brick body (101), the front brick body (201) and the tap hole belly brick (600) are made of magnesia carbon.
6. The utility model provides a novel converter pushing off slag system, includes from interior to exterior consecutive tap hole abdomen brick (600), tap hole brick, interior slide plate brick (300), outer slide plate brick (400) and outer water gap brick (500), its characterized in that: the tap-hole brick is the tap-hole brick of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120368945.4U CN214300233U (en) | 2021-02-08 | 2021-02-08 | Split type steel-tapping hole brick for converter sliding plate slag blocking and slag blocking system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120368945.4U CN214300233U (en) | 2021-02-08 | 2021-02-08 | Split type steel-tapping hole brick for converter sliding plate slag blocking and slag blocking system |
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| CN214300233U true CN214300233U (en) | 2021-09-28 |
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| CN202120368945.4U Active CN214300233U (en) | 2021-02-08 | 2021-02-08 | Split type steel-tapping hole brick for converter sliding plate slag blocking and slag blocking system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114317874A (en) * | 2022-01-13 | 2022-04-12 | 山东钢铁股份有限公司 | Head brick for converter steel tapping hole and method for prolonging service life of converter steel tapping hole |
-
2021
- 2021-02-08 CN CN202120368945.4U patent/CN214300233U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114317874A (en) * | 2022-01-13 | 2022-04-12 | 山东钢铁股份有限公司 | Head brick for converter steel tapping hole and method for prolonging service life of converter steel tapping hole |
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