CN202199765U - Novel ladle bottom liner structure - Google Patents
Novel ladle bottom liner structure Download PDFInfo
- Publication number
- CN202199765U CN202199765U CN2011203119739U CN201120311973U CN202199765U CN 202199765 U CN202199765 U CN 202199765U CN 2011203119739 U CN2011203119739 U CN 2011203119739U CN 201120311973 U CN201120311973 U CN 201120311973U CN 202199765 U CN202199765 U CN 202199765U
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- layer
- stones
- mouth
- river
- laying bricks
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Abstract
The utility model provides a novel ladle bottom liner structure which consists of a masonry layer and a pouring layer, wherein a molten steel outlet and an air vent are arranged on the masonry layer; an impact zone higher than the other positions of the masonry layer is arranged around the air vent; and a transition area is arranged between the molten steel outlet and the impact zone. The novel ladle bottom liner structure is characterized in that a plurality of anchor bricks higher than the masonry of the area are respectively arranged in partial transition area between the impact zone and the molten steel outlet as well as between the impact zone and the air vent; the pouring layer is formed on an anchoring part and the upper surface of the masonry layer by pouring material via pouring; and the upper surface of the pouring layer is smooth and inclined towards the molten steel outlet. Through the novel ladle bottom liner structure, the bottom pouring material can be tightly held, the adhesive force of the bottom pouring material can be improved, the service life of the ladle can be prolonged and the higher economical benefit can be generated.
Description
Technical field
The utility model relates to metallurgical technology field, specifically is a kind of novel liquid steel pot bottom liner body structure.
Background technology
At present, the molten steel jar is the requisite thermal technology's container of steel making working procedure, the molten steel memory action when bearing molten steel dressing and the vacuum metling of converter to casting machine transport process.The refractory lining of molten steel jar generally is made up of permanent layer and working lining, and permanent layer adopts that pours is integrated poured to form, and working lining generally uses refractory brick to build by laying bricks or stones and forms.The existing molten steel jar in use brick in its working lining water slug district, bottom is formed pit later on easily by molten steel scouring; The compelled maintenance of rolling off the production line; Owing to the restriction of molten steel tankage size and mouth of a river passage, can not increase the thickness of end working lining significantly, have only from the material aspect and improve; Through test of many times, DeGrain.Along with the development of castable refractory technology, progressively be applied in the technology that covers one deck pours on the end working lining, obtained certain effect; But; Pours generally comes off about 10 times fully, and existing capacity is the molten steel jar of 80t, use about the 90-95 heat the residual brick thickness of back impact zone basically≤100mm; Serious threat is safe in utilization to the molten steel jar; And that molten steel tank skin working lining thickness still has is more more than needed, removes the waste that overhaul has caused material, therefore improves at the bottom of the molten steel jar work that is very important the service life of working lining.
Operational layer brick at first receives the washing away of steel stream that height of drop reaches 3～8m at every turn at the bottom of the molten steel jar when receiving steel; Strong wallop will be wrapped end operational layer brick surface breakdown and peeled off; In the BOTTOM ARGON BLOWING of carrying out, electrical heating, application of vacuum molten steel is circulated in bag subsequently; End brick also receives the MOLTEN STEEL FLOW effect in the steel pouring process, makes the surface softening by erosion.Go out the slag that is attached to jar basal surface after the steel deslagging and can form eutectic with jar basal surface refractory brick generation chemical reaction again.Water the steel cycle at one; Bag end brick receives the steel time the longest, and its surperficial soften layer also produces under the huge pressure of molten steel and presses creep, makes surfacing become fine and close more; During cooling; Inconsistent with inner material density because of the surface, expansion is shunk different and is produced interlayer crackle and face crack, the phenomenon that occurs peeling off.
Summary of the invention
The utility model is employed in the method for working lining piling at the bottom of the molten steel jar and makes liner body structure, improves the protective effect of pours, so that improve molten steel jar service life, strengthens pours to the tight power of taking off of brick, reaches and improves the thickening material purpose in service life.
Said a kind of novel liquid steel pot bottom liner body structure; Form by building layer and pouring layer by laying bricks or stones; Be provided with the tapping mouth of a river and air-vent on the layer building by laying bricks or stones, be provided with around the tapping mouth of a river and be lower than the mouth of a river district that builds other position of layer by laying bricks or stones, around air-vent, be provided with and be higher than the impact zone of building other position of layer by laying bricks or stones; Be provided with transition region between mouth of a river district and the impact zone; For it is characterized in that: be respectively equipped with polylith in the part mouth of a river district between impact zone and the tapping mouth of a river and air-vent, the transition region and be higher than the anchored brick that the one's respective area is built height by laying bricks or stones, anchored brick with build layer upper surface by laying bricks or stones and form pouring layer with the pours cast, the pouring layer upper surface is level and smooth and be skewed to the tapping mouth of a river.
Said anchored brick both sides are provided with the groove that improves pours adhesive force near upper edge.
Anchored brick height in said impact zone, mouth of a river district and the transition region is higher than the one's respective area respectively and builds height 50-80mm by laying bricks or stones, and the height of its groove below is highly identical with building by laying bricks or stones of affiliated area.
The beneficial effect of the utility model: (1) can be taken off the bottom pouring material tightly well, improves the adhesive force of bottom pouring material, can improve the service life of pours more than 20 time, and the molten steel jar also improves 20 times service life simultaneously.
(2) improved the safe handling coefficient of molten steel jar, under the situation about improving in the life-span, residual brick thickness has also increased 20mm at the bag end.
Working lining " piling " structure has obtained good effect at the bottom of the described molten steel jar of the utility model, can produce high economic benefit, can extensively on low capacity molten steel jar, be applicable.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the vertical view that the utility model is built layer by laying bricks or stones;
Fig. 3 is the molten steel jar cutaway view that adopts the utility model,
Fig. 4 is the structural representation of anchored brick.
Among the figure: 1-builds layer by laying bricks or stones, 1-1-mouth of a river district, 1-2-impact zone, 1-3-transition region, 2-pouring layer, 3-air-vent, 4-anchored brick, 5-groove, the 6-mouth of a river of tapping, 7-molten steel jar.
The specific embodiment
To combine accompanying drawing that the technical scheme in the utility model is further specified below.Among Fig. 1,2; A kind of novel liquid steel pot bottom liner body structure of institute is formed with pouring layer 2 by building layer 1 by laying bricks or stones; Be provided with the tapping mouth of a river 6 and air-vent 3 on the layer building by laying bricks or stones; The tapping mouth of a river 6 is provided with on every side and is lower than the mouth of a river district 1-1 that builds other position of layer by laying bricks or stones, around air-vent 3, is provided with to be higher than the impact zone 1-2 that builds other position of layer by laying bricks or stones, is provided with transition region 1-3 between mouth of a river district 1-1 and the impact zone 1-2; For it is characterized in that: be respectively equipped with polylith in the part mouth of a river district 1-1 between impact zone 1-1 and the tapping mouth of a river 6 and air-vent 3, the transition region 1-3 and be higher than the anchored brick 4 that the one's respective area is built height by laying bricks or stones; Anchored brick 4 with build layer 1 upper surface by laying bricks or stones and form pouring layer 2 with the pours cast, pouring layer 2 upper surfaces are level and smooth and be skewed to the tapping mouth of a river 6, are convenient to steel flow to the tapping mouth of a river 6.
Among Fig. 4, said anchored brick 4 both sides are provided with the groove 5 that improves pours adhesive force near upper edge.
Anchored brick 4 in said impact zone 1-2, mouth of a river district 1-1 and the transition region 1-3 is higher than the one's respective area highly respectively and builds height 50-80mm by laying bricks or stones, and the height of its groove 5 belows is highly identical with building by laying bricks or stones of affiliated area.
The utility model is an example with 80t molten steel jar, and the impact zone thickness of existing 80t molten steel jar 7 bottoms is 300mm, and mouth of a river area thickness is 180mm, uses the transition of 240mm brick between impact zone 300mm brick and the non-impact zone 180mm brick.According to the structure distribution at the bottom of the existing bag, design three kinds of end bricks that are higher than zones of different as anchored brick 4, the height of anchored brick 4 is respectively 240mm, 300mm, 350mm.Its concrete operations are operated as follows:
(1) enlarges the impact zone area.The high brick of 180mm changed two rows into by building four rows originally by laying bricks or stones, increased high brick of a row 240mm and the high brick of a row 300mm, after the improvement, build by laying bricks or stones between delivery port 6 and the air-vent 3 two row 180mm high lay bricks, three row 240mm are high lays bricks and high the laying bricks of two row 300mm;
(2) between the tapping mouth of a river 6 and air-vent 3, reach impact zone 1-1 place and adopt " piling " structure to build by laying bricks or stones, disperse to be provided with polylith anchored brick 4, as shown in Figure 2;
(4) use corundum castable above impact zone 1-2 and air-vent 3, to pour into a mould one deck and form grouting layer 2, vibratory compaction, as shown in Figure 3, delivery port 6 is reserved the space with ventilative position, guarantees that bottom blowing rate and molten steel can pour along the mouth of a river automatically.
The direct economic benefit that above scheme obtained is following:
Like annual production capacity is 2,200,000 t, and the dressing amount is 80t, and the molten steel jar is brought up to 115 times by 90 times service life, similar 50 of the quantity of then annual minimizing use molten steel jar.And a molten steel jar needs aluminium-magnesia carbon brick 9.5t, and magnesia carbon brick 3.2t, bag wrap bottom pour mold material feeding 1t along pours 2t, and then each molten steel jar needs more than 50,000 yuan of the cost of anti-the material, and annual cost-saved more than 200 ten thousand.
Claims (3)
1. novel liquid steel pot bottom liner body structure; Form by building layer (1) and pouring layer (2) by laying bricks or stones; Be provided with the tapping mouth of a river (6) and air-vent (3) on the layer building by laying bricks or stones; The tapping mouth of a river (6) is provided with on every side and is lower than the mouth of a river district (1-1) that builds other position of layer by laying bricks or stones; Be provided with on every side at air-vent (3) and be higher than the impact zone (1-2) of building other position of layer by laying bricks or stones, be provided with transition region (1-3) between mouth of a river district (1-1) and the impact zone (1-2), for it is characterized in that: in impact zone (1-1) and the part mouth of a river district (1-1) between the mouth of a river (6) and the air-vent (3) of tapping, transition region (1-3), be respectively equipped with polylith and be higher than the one's respective area and build anchored brick (4) highly by laying bricks or stones; At anchored brick (4) with build layer (1) upper surface by laying bricks or stones and form pouring layer (2) with pours cast, pouring layer (2) upper surface is level and smooth and be skewed to the tapping mouth of a river (6).
2. a kind of novel liquid steel pot bottom liner body structure according to claim 1 is characterized in that: said anchored brick (4) both sides are provided with the groove (5) that improves pours adhesive force near upper edge.
3. a kind of novel liquid steel pot bottom liner body structure according to claim 2; It is characterized in that: the anchored brick (4) in said impact zone (1-2), mouth of a river district (1-1) and the transition region (1-3) is higher than the one's respective area highly respectively and builds height 50-80mm by laying bricks or stones, and the height of its groove (5) below is highly identical with building by laying bricks or stones of affiliated area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203119739U CN202199765U (en) | 2011-08-25 | 2011-08-25 | Novel ladle bottom liner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203119739U CN202199765U (en) | 2011-08-25 | 2011-08-25 | Novel ladle bottom liner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202199765U true CN202199765U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203119739U Expired - Fee Related CN202199765U (en) | 2011-08-25 | 2011-08-25 | Novel ladle bottom liner structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202199765U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399959A (en) * | 2014-12-02 | 2015-03-11 | 武汉钢铁(集团)公司 | Masonry construction capable of increasing service cycle of bottom of steel ladle |
-
2011
- 2011-08-25 CN CN2011203119739U patent/CN202199765U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104399959A (en) * | 2014-12-02 | 2015-03-11 | 武汉钢铁(集团)公司 | Masonry construction capable of increasing service cycle of bottom of steel ladle |
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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: 20120425 Termination date: 20140825 |
|
| EXPY | Termination of patent right or utility model |