CN202671553U - Heterogeneous substance embedded type composite hearth liner - Google Patents
Heterogeneous substance embedded type composite hearth liner Download PDFInfo
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- CN202671553U CN202671553U CN 201220328653 CN201220328653U CN202671553U CN 202671553 U CN202671553 U CN 202671553U CN 201220328653 CN201220328653 CN 201220328653 CN 201220328653 U CN201220328653 U CN 201220328653U CN 202671553 U CN202671553 U CN 202671553U
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Abstract
The utility model relates to a heterogeneous substance embedded type composite hearth liner. The outer edge of an annular low-heat conduction refractory brick layer and an inner edge of an annular high-heat conduction refractory brick layer form a convex-concave embedded and matched annular joint surface; and special cement gum is filled in gaps of joined surfaces of all bricks of the annular joint surface to absorb shearing strength produced at different expansion ratios, so that the stability of a brickwork of the hearth is guaranteed, and the risk that molten iron enters the refractory material of the hearth can be avoided. During actual production, when low-heat conduction refractory brick brickworks are eroded completely, the occlusion parts of the low-heat conduction refractory brick brickworks and high-heat conduction refractory brick brickworks can still exert the function of part of the low-heat conduction refractory brick brickworks, and a scum layer can be formed conveniently. The liner has the advantages that the service life of blast furnaces with different sizes can be effectively prolonged, the operating cost of enterprises can be reduced, and the economic benefit of the enterprises can be improved.
Description
Technical field:
The utility model relates to a kind of cupola well refractory lining, particularly relates to a kind of heterogeneous inserted compound hearth liner.
Background technology:
Known blast furnace hearth position refractory lining once adopted following three kinds of situations:
1, the first: building high heat-conducting type refractory brick (micropore or non-microporous carbon brick, schungite one carborundum baked carbon brick, the little brick fuel of hot pressing etc.) by laying bricks or stones near cupola well cooling stave position, building low heat-conducting type refractory brick (corundum one mullite brick, composite brown corundum brick etc.) near the stove inside line by laying bricks or stones.
2, the second: building self-baked charcoal brick by laying bricks or stones near cupola well cooling stave position, building low heat-conducting type refractory brick (corundum one English comes stone brick, composite brown corundum brick etc.) near the stove inside line by laying bricks or stones.
3, the third: build by laying bricks or stones near cupola well cooling stave position (so-called " cold zone ") baked carbon brick, near stove inside line (so-called " high-temperature zone ") build low heat-conducting type refractory brick by laying bricks or stones, self-baked charcoal brick is built at position (what is called " inferior high-temperature zone ") between " high-temperature zone " and " cold zone " by laying bricks or stones.Self-baked charcoal brick and baked carbon brick, low heat-conducting type refractory brick form and sting and masonry structure.
In known the first brick fuel-ceramic brickwork structure, at perforation bonding crack from top to bottom of bonding surface existence of high heat-conducting type refractory brick and low heat-conducting type refractory brick.The developed width of bonding crack is looked the design alternative mode and is not all 2～10mm; Design width according to bonding crack is different, adopts refractory mortar or fire-resistance rammed mass to fill this bonding crack.The bonding crack of this up/down perforation is that molten iron pierces the condition of providing convenience between high heat-conducting type refractory brick and the low heat-conducting type refractory brick.And then globality, the stability of destruction cupola well refractory lining.In case molten iron pierces this bonding crack, the ceramic brickwork in the compound Lining will lose should insulation, avoid molten iron to contact the effects such as brick fuel, serious harm cupola well life-span.Simultaneously, the fire-resistance rammed mass of filling in the wider bonding crack affects the heat transfer efficiency of this compound lining, and low heat-conducting type refractory brick can not get sufficient cooling protection, so that the speed that low heat-conducting type refractory brick suffers erosion is accelerated.
Known the second self-baked charcoal brick-ceramic brickwork structure, the technological deficiency that not only has the first brick fuel one ceramic brickwork structure, and because self-baked charcoal brick need to could be realized complete self-baking under certain temperature condition, and then obtain to satisfy the use properties of cupola well condition.But when having built low heat-conducting type refractory brick by laying bricks or stones in the hot junction of self-baked charcoal brick, self-baked charcoal brick is in lower temperature or the low-temperature condition that can not realize complete self-baking within considerable time, and the self-baked charcoal brick wedding agent but vapors away (but not having coking).Like this, when having possessed temperature condition, there has not been adhesive substance in the self-baked charcoal brick.In view of this self-baked charcoal brick one ceramic brickwork structure has these technological deficiencies, it can not satisfy requirement modern efficient, Long Campaign Blast Furnace t.
Known the third comprehensive cupola well inner lining structure, although the harm that " will definitely mould " performance of the self-baked charcoal brick that dependence and brick fuel and low heat-conducting type refractory brick are stung and built by laying bricks or stones has avoided brick fuel, low heat-conducting type refractory brick differential expansion to cause has been eliminated the up and down connection bonding crack that exists in aforementioned two kinds of brick fuels, the one ceramic brickwork structure by stinging and building by laying bricks or stones simultaneously.But, the capacity of heat transmission that self-baked charcoal brick is complete to be closed after the self-baking generally is lower than the high-quality baked carbon brick, the high thermal conductivity of the cooling power of cupola well cooling stave and high-quality brick fuel is not in full use like this, builds the speed that suffers erosion at the low heat-conducting type refractory brick of cupola well hot side by laying bricks or stones and accelerates; And, the ability of the chemical erosion of self-baked charcoal brick opposing molten iron, slag etc. is lower than the high-quality baked carbon brick, but occupied the radial space (that is to say the length that has reduced the high-quality brick fuel) that to build the high-quality baked carbon brick originally by laying bricks or stones, when corroding totally as consumptive low heat-conducting type refractory brick, self-baked charcoal brick can not be realized the result of use that is equal to the high-quality brick fuel affecting the cupola well life-span.In addition, build simultaneously 2～3 kinds of mud that baked carbon brick, self-baked charcoal brick, low heat-conducting type refractory brick uses by laying bricks or stones and also be difficult to guarantee the construction masonry quality.
The utility model content:
The purpose of this utility model is: in order to overcome the deficiency of the existing brick fuel one ceramic brickwork compound Lining of current blast furnace hearth, prolong cupola well furnace life, make heterogeneous inserted compound hearth liner.
The new technical scheme of this practicality is: a kind of heterogeneous inserted compound hearth liner, the cupola well wall is followed successively by the low heat-conducting type fire brick layer (being formed by low heat-conducting type laying fireproof bricks) of annular from inside to outside, annular high heat-conducting type fire brick layer (being formed by high heat-conducting type laying fireproof bricks), annular cooling stave and annular outer wall, and the refractory brick of the non-heat-conducting type of Blast Furnace Bottom and brick fuel, wherein, the outer rim of the low heat-conducting type fire brick layer of annular is set to convex-concave with the inner edge of annular high heat conduction refractory brick and inlays the annular interface that cooperates, be filled with extraordinary clay in the face of the joining slit of each brick of annular interface place, absorb the shearing stress that produces owing to different rate of expansion, guarantee the steadiness of cupola well masonry.
High heat-conducting type or low heat-conducting type refractory brick are 0～3% at the coefficient of thermal expansion of normal temperature～1200 ℃ temperature range, when choosing high heat-conducting type and low heat-conducting type refractory brick, accomplish that as far as possible the coefficient of thermal expansion correspondence is close.
Refractory mortar has the high heat-conducting type of simultaneous adaptation and low heat-conducting type laying fireproof bricks, and has the technical feature of curing in ℃ temperature range of normal temperature～1200, and refractory mortar has 0～50% hot compression ratio.
High heat-conducting type refractory brick can be selected self-baked charcoal brick, microporous carbon brick, ultramicropore brick fuel, hot pressing charcoal piece, the little charcoal piece of porous die stamping, alumina carbon brick, the combination of one or more of micropore burnt aluminum brick fuel etc.; Low heat conduction refractory brick refractory materials can be selected the corundum-mullite brick, combine one or more the combination of corundum brick etc. of microporous corundum brick, composite brown corundum brick, oriental topaz brick, Plastic phase bonded corundum brick, Sai Long.
Useful positively effect:
L, heterogeneous inserted refractory lining of the present utility model, eliminate the up/down perforation bonding crack that exists between the non-heat conduction refractory brick and heat conduction refractory brick in the present known technology brick fuel one ceramic brickwork compound Lining, the utility model is according to there being different rate of expansion in the unlike material situation, the face of joining at the high heat conduction refractory brick layer of annular and the low heat conduction refractory brick layer of annular should adopt extraordinary clay, absorb the shearing stress that produces owing to different rate of expansion, guarantee the steadiness of cupola well masonry, avoided molten iron to pierce the danger of cupola well refractory materials inside.
2, the utility model is in actual production, and when low heat conduction refractory brick masonry was etched totally, low heat conduction refractory brick masonry and high heat conduction refractory brick masonry occlusion portion still can be brought into play the effect of the low heat conduction refractory brick masonry of part, are conducive to the formation of slag iron layer.
3, select heat-conducting type and low heat-conducting type refractory brick, both hot swollen rates to approach, better eliminate they ask occlusal masonry the time differential expansion stress rupture defective that produces.
4, inlay masonry construction, make non-heat-conducting type and high heat-conducting type refractory brick close contact, make the high thermal conductivity of high heat-conducting type refractory brick for low heat-conducting type refractory brick provides effective cooling conditions, reduced low heat-conducting type refractory brick and be subject to the speed that molten iron corrodes.
5, because the interior slag of low heat-conducting type refractory brick and stove; the affinity of iron, coke mixture is better; when the low heat-conducting type refractory brick of high heat-conducting type refractory brick medial surface is etched totally; the low residual body of heat-conducting type refractory brick of the part that retains in high heat-conducting type refractory brick is conducive to slag, iron; coke mixture is bonded in the hot side of bricking, protects high heat-conducting type refractory brick.Refractory mortar has the assurance masonry quality, saves the advantage of the time of building by laying bricks or stones.
6, the result of five comprehensive above-mentioned advantages, the comprehensive beneficial effect of the utility model is the blast furnace campaign that more effectively prolongs each rank volume, reduces the enterprise operation cost, improves Business Economic Benefit.
Description of drawings:
Fig. 1 is heterogeneous inserted compound hearth inner lining structure synoptic diagram.
Among the figure, label l is the low heat-conducting type fire brick layer of annular, 2 is annular high heat-conducting type fire brick layer, 3 is annular cooling stave, and 4 is the ramming bed of material, and 5 is annular outer wall, 6 inlay the annular interface (seam) of cooperation for convex-concave, 7 is the refractory brick of the non-heat-conducting type of Blast Furnace Bottom, and 8 is the Blast Furnace Bottom brick fuel, and 9 is corundum ramming refractory matter.
Embodiment:
Referring to Fig. 1, the cupola well wall of this heterogeneous inserted compound hearth liner is followed successively by the low heat-conducting type fire brick layer 1 of annular, annular high heat-conducting type fire brick layer 2, annular cooling stave 3 and annular outer wall 5 etc. from inside to outside.Wherein, the outer rim of the low heat-conducting type fire brick layer 1 of annular is set to convex-concave with the inner edge of annular high heat-conducting type fire brick layer 2 and inlays the annular interface 6 that cooperates, and is filled with clay in the face of the joining slit of annular interface 6 each brick of place.Between annular cooling stave 3 and the annular high heat-conducting type fire brick layer 2 the ramming bed of material 4 is set.The refractory brick 7 of the non-heat-conducting type of Blast Furnace Bottom is positioned at the upside of Blast Furnace Bottom brick fuel 8, is connected with the inner edge of the high heat-conducting type fire brick layer 2 of described annular by corundum ramming refractory matter 9 on refractory brick 7 outer circumference surfaces of the non-heat-conducting type of Blast Furnace Bottom.
High heat-conducting type or low heat-conducting type refractory brick are 0～3% at the coefficient of thermal expansion of normal temperature～1200 ℃ temperature range, when choosing high heat-conducting type and low heat-conducting type refractory brick, accomplish that as far as possible the coefficient of thermal expansion correspondence is close.Refractory mortar has the high heat-conducting type of simultaneous adaptation and low heat-conducting type laying fireproof bricks, and has the technical feature of curing in ℃ temperature range of normal temperature～1200, and refractory mortar has 0～50% hot compression ratio.
The high heat-conducting type fire brick layer 2 of annular can be selected self-baked charcoal brick, microporous carbon brick, ultramicropore brick fuel, hot pressing charcoal piece, the little charcoal piece of porous die stamping, alumina carbon brick, the combination of one or more of micropore burnt aluminum brick fuel etc.; The low heat-conducting type fire brick layer 1 of annular can be selected the corundum-mullite brick, combine one or more the combination of corundum brick etc. of microporous corundum brick, composite brown corundum brick, oriental topaz brick, Plastic phase bonded corundum brick, Sai Long.
Claims (4)
1. heterogeneous inserted compound hearth liner, the cupola well wall is followed successively by the low heat-conducting type fire brick layer of annular, annular high heat-conducting type fire brick layer, annular cooling stave and annular outer wall from inside to outside, and the refractory brick of the non-heat-conducting type of Blast Furnace Bottom and brick fuel, it is characterized in that: the outer rim of the low heat-conducting type fire brick layer of annular is set to convex-concave with the inner edge of annular high heat-conducting type fire brick layer and inlays the annular interface that cooperates, and is filled with clay in the face of the joining slit of each brick of annular interface place.
2. compound hearth liner according to claim 1, it is characterized in that: high heat-conducting type or low heat-conducting type refractory brick are 0～3% at the coefficient of thermal expansion of normal temperature～1200 ℃ temperature range, when choosing high heat-conducting type and low heat-conducting type refractory brick, accomplish that as far as possible the coefficient of thermal expansion correspondence is close.
3. compound hearth liner according to claim 1 and 2, it is characterized in that: refractory mortar has the high heat-conducting type of simultaneous adaptation and low heat-conducting type laying fireproof bricks, and the technical feature that has curing in ℃ temperature range of normal temperature～1200, refractory mortar have 0～50% hot compression ratio.
4. compound hearth liner according to claim 1 and 2, it is characterized in that: annular high heat-conducting type fire brick layer is selected one or more of following brick type, self-baked charcoal brick, microporous carbon brick, ultramicropore brick fuel, hot pressing charcoal piece, the little charcoal piece of porous die stamping, alumina carbon brick, micropore burnt aluminum brick fuel; The low heat-conducting type fire brick layer of annular is selected one or more of following brick type, corundum-mullite brick, microporous corundum brick, composite brown corundum brick, oriental topaz brick, Plastic phase bonded corundum brick, the Sai Long corundum brick that combines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328653 CN202671553U (en) | 2012-07-09 | 2012-07-09 | Heterogeneous substance embedded type composite hearth liner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220328653 CN202671553U (en) | 2012-07-09 | 2012-07-09 | Heterogeneous substance embedded type composite hearth liner |
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| CN202671553U true CN202671553U (en) | 2013-01-16 |
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| CN 201220328653 Expired - Fee Related CN202671553U (en) | 2012-07-09 | 2012-07-09 | Heterogeneous substance embedded type composite hearth liner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231064A (en) * | 2020-01-21 | 2020-06-05 | 广东石井新材料有限公司 | Casting heat preservation method and heat preservation device |
| CN111607675A (en) * | 2020-06-29 | 2020-09-01 | 北京瑞尔非金属材料有限公司 | Blast furnace hearth ceramic cup side wall with embedded structure |
-
2012
- 2012-07-09 CN CN 201220328653 patent/CN202671553U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111231064A (en) * | 2020-01-21 | 2020-06-05 | 广东石井新材料有限公司 | Casting heat preservation method and heat preservation device |
| CN111231064B (en) * | 2020-01-21 | 2021-07-20 | 广东石井新材料有限公司 | Casting heat preservation method and heat preservation device |
| CN111607675A (en) * | 2020-06-29 | 2020-09-01 | 北京瑞尔非金属材料有限公司 | Blast furnace hearth ceramic cup side wall with embedded structure |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20210709 |