CN105177203A - Cooling wall of blast furnace and manufacturing method of cooling wall - Google Patents
Cooling wall of blast furnace and manufacturing method of cooling wall Download PDFInfo
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- CN105177203A CN105177203A CN201510479375.5A CN201510479375A CN105177203A CN 105177203 A CN105177203 A CN 105177203A CN 201510479375 A CN201510479375 A CN 201510479375A CN 105177203 A CN105177203 A CN 105177203A
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Abstract
The invention provides a cooling wall of a blast furnace and a manufacturing method of the cooling wall. The cooling wall of the blast furnace comprises a plurality of cooling pipes which are vertically arranged side by side and a body wrapping the cooling pipes. The liquid inlet ends and the liquid outlet ends of the cooling pipes all extend out of the body. The body is formed by combining a cast steel heat conductor and a copper heat conductor. The cast steel heat conductor at least wraps the sides, back onto a furnace cavity of the blast furnace, of the cooling pipes, and the copper heat conductor wraps one part of the sides, facing the furnace cavity of the blast furnace, of the cooling pipes. According to the cooling wall of the blast furnace, the beneficial effects of high mechanical strength of cast steel materials and the good cooling effect of copper materials are integrated, and therefore the service life of the cooling wall and the service life of the blast furnace are prolonged; and the dual requirements of the blast furnace for the cooling performance and the mechanical performance of the cooling wall are met. Meanwhile, compared with a cast steel or copper cooling wall, high cost performance is achieved.
Description
Technical field
The present invention relates to field of steel metallurgy, particularly a kind of cooling stave of blast furnace and manufacture method thereof.
Background technology
Cooling stave is the visual plant of blast-furnace body, and its major function is the structural and stopping property of protection last furnace shell, thus the furnace shell of blast furnace can be produced under the condition of high pressure, high temperature and deep-etching.Complete cooling stave is again form and the main dependence of stable blast furnace inner mold, and direct motion, efficient and low consumption can produce and play a very important role blast furnace, blast furnace mainly contains the following aspects to the performance requriements of cooling stave in process of production:
1, there is sufficient cooling power, the heat passing to it can be taken away by water coolant in stove;
2, can form slag crust protective layer at its work hot side, serve as working lining, opposing hot-fluid impacts;
3, can work at a higher temperature, and bear larger thermal stresses and there is stronger non-deformability; That is, the cooling stave of blast furnace will possess sufficient cooling power and good mechanical property simultaneously, just can better meet the needs of blast fumance.
At present, blast furnace mainly uses the cooling stave of three kinds of materials: cast-iron cooling wall, cast steel cooling wall and copper cooling wall.The mechanical property rank of above-mentioned three kinds of cooling staves is: cast steel > cast iron > copper, and cooling power rank is: copper > cast steel > cast iron.But, for the cast steel cooling wall of better mechanical property, because the thermal conductivity of its wall body material is low, cooling performance is poor, and in body of heater high thermal load regions (bosh, furnace bosh and restoration of lower stack) dross ability, slag crust can not stable existence, its hot-face temperature is caused to use temperature safely higher than it, cause wall body to ftracture, water pipe such as to leak at the problem, can not meet the requirement of Long Campaign Blast Furnace.And for the good copper cooling wall of cooling performance, the heat conductivility of its wall body material is excellent, cooling power is strong, can form stable slag crust, and also can rebuild rapidly after slag crust comes off in body of heater high thermal load regions.But in recent years, big area is damaged and repaiies in being forced to still have the copper cooling wall of many blast furnaces to occur, analyze its reason and mainly contain following 2 points: one is that copper cooling wall is very responsive to the change of blast furnace edge airflow, once occur that edge airflow is superfluous, slag crust comes off, and the thermal load of copper cooling wall increases at once, and after copper cooling wall hot side is exposed, edge airflow is vigorous over a long time, be then easy to be burned; Two is that the mechanical property of copper cooling wall is poor, not wear-resistant, easily produces distortion, and water pipe such as to snap at the problem, and after its surface edge brick is etched, and its hot side can't forbid the wearing and tearing of coke and molten ore, causes and causes copper cooling wall to damage because mill leakage cooling-water duct.
Summary of the invention
An object of the present invention is to provide and a kind ofly possess good cooling performance and mechanical property, the cooling stave of the blast furnace that can increase the service life.
Another object of the present invention is to provide a kind of manufacture method of the cooling stave for the manufacture of above-mentioned blast furnace.
For achieving the above object, the invention provides a kind of cooling stave of blast furnace, it comprises: the multiple cooling tube be vertically arranged side by side and the body being coated on multiple described cooling tube outside, liquid feeding end and the outlet end of each described cooling tube all extend described body, described body is combined by cast steel heat conductor and copper heat conductor, described cast steel heat conductor is at least coated on the furnace chamber side of each described cooling tube described blast furnace dorsad, and described copper heat conductor is coated on the part of each described cooling tube towards the furnace chamber side of described blast furnace.
The cooling stave of blast furnace as above, wherein, described copper heat conductor comprises many copper heat conduction bars be horizontally arranged at interval.
The cooling stave of blast furnace as above, wherein, described cooling tube is copper-bearing alloy pipe.
The cooling stave of blast furnace as above, wherein, the surface of described body towards described blast furnace chamber is provided with flame retardant coating, and described flame retardant coating comprises: be located at described cast steel heat conductor towards the refractory brick on the surface of described blast furnace chamber; Be located at described copper heat conductor towards the flame-retardant coating layer on the surface of described blast furnace chamber or the refractory casting bed of material.
The cooling stave of blast furnace as above, wherein, described cast steel heat conductor is transversely interval with multiple dovetail-indent towards the surface of described blast furnace chamber, described refractory brick is provided with the projection matched with described dovetail-indent, and described refractory brick is connected on described cast steel heat conductor by described projection and described dovetail-indent.
The cooling stave of blast furnace as above, wherein, is provided with protective tube at described body and the described liquid feeding end of each described cooling tube and the joint of described outlet end.
The cooling stave of blast furnace as above, wherein, the upper end end face of described body is provided with suspension ring.
Present invention also offers a kind of manufacture method of cooling stave of blast furnace, it comprises the following steps:
Multiple cooling tube is vertically in a mold placed side by side, and liquid feeding end and the outlet end of each described cooling tube all stretch out described mould;
In mould, pour into a mould cast steel solution, the furnace chamber side that described cast steel solution is at least coated on each described cooling tube described blast furnace dorsad forms cast steel heat conductor, and reserves the space of cast copper melt;
Described copper solutions is poured into a mould in reserving space, described copper solutions is coated on the part formation copper heat conductor of each described cooling tube towards the furnace chamber side of described blast furnace, and described copper heat conductor and described cast steel heat conductor are combined to form body and are coated on multiple described cooling tube outside.
The manufacture method of the cooling stave of blast furnace as above, wherein, when pouring into a mould described copper solutions in reserving space, described copper solutions lateral separation is coated on each described cooling tube and forms towards the furnace chamber side of described blast furnace the described copper heat conductor be made up of many flat coppers heat conduction bar.
The manufacture method of the cooling stave of blast furnace as above, wherein, after the outside coated body of multiple described cooling tube, the manufacture method of the cooling stave of described blast furnace is further comprising the steps of:
On the surface of described blast furnace chamber, refractory brick is inlayed at described cast steel heat conductor;
At described copper heat conductor towards spray refractory coating on the surface of described blast furnace chamber or cast refractory castable, described refractory paint or described refractory castable engage formation flame retardant coating with described refractory brick.
Compared with prior art, advantage of the present invention is as follows:
The cooling stave of blast furnace provided by the invention, by at a part of coated copper heat conductor of each cooling tube towards body of heater high thermal load regions, the coated cast steel heat conductor in all the other positions, copper material is utilized to have heat conductivility excellent, cooling power is strong, stable slag crust can be formed in body of heater high thermal load regions, and after slag crust comes off, the advantage such as also to rebuild rapidly, and the advantage that cast steel physical strength is high, cooling stave is made not only to have stronger non-deformability, and good heat conductivity, cooling power is strong, and effectively can resist hot-fluid impact, in brief, the cooling stave of blast furnace provided by the invention advantage that is cast steel physical strength is high and copper material good cooling results is integrated in one, thus extend the working life of cooling stave, and then extend the work-ing life of blast furnace, meet the cooling performance of blast furnace to cooling stave and the double requirements of mechanical property, and compared with cast steel or copper cooling wall, there is very high cost performance.In addition, the cooling stave adopting the manufacture method of the cooling stave of blast furnace provided by the invention to make has all advantages of the cooling stave of above-mentioned blast furnace.
Accompanying drawing explanation
The following drawings is only intended to schematically illustrate the present invention and explain, not delimit the scope of the invention.Wherein:
Fig. 1 is the main TV structure schematic diagram of the cooling stave of the blast furnace provided according to one embodiment of the invention;
Fig. 2 is the side-looking structural representation after the cooling stave removal flame retardant coating of the blast furnace shown in Fig. 1.
Drawing reference numeral illustrates:
1-cooling tube; 2-body; 21-cast steel heat conductor; 211-dovetail-indent; 22-copper heat conduction bar; 3-flame retardant coating; 31-refractory brick; 32-flame-retardant coating layer; 4-protective tube; 5 suspension ring.
Embodiment
In order to have clearer understanding to technical scheme of the present invention, object and effect, existing accompanying drawings the specific embodiment of the present invention.
It should be noted that, in fig. 1 and 2 for clearly showing the annexation between each cooling tube and cast steel heat conductor and copper heat conductor, using dotted line to draw each cooling tube.
As depicted in figs. 1 and 2, the invention provides a kind of cooling stave of blast furnace, it comprises: the multiple cooling tubes 1 be vertically arranged side by side and the body 2 being coated on multiple cooling tube 1 outside, liquid feeding end and the outlet end of each cooling tube 1 all extend body 2, body 2 is combined by cast steel heat conductor 21 and copper heat conductor, cast steel heat conductor 21 is at least coated on the furnace chamber side of each cooling tube 1 blast furnace dorsad, in order to ensure the cooling efficiency of cooling stave, copper heat conductor is coated on the part of each cooling tube 1 towards the furnace chamber side of blast furnace.Specifically, at a part of coated copper heat conductor of each cooling tube 1 towards body of heater high thermal load regions (furnace chamber), the coated cast steel heat conductor 21 in all the other positions, copper material is utilized to have heat conductivility excellent, cooling power is strong, stable slag crust can be formed in body of heater high thermal load regions, and after slag crust comes off, the advantage such as also to rebuild rapidly, and the advantage that cast steel physical strength is high, cooling stave is made not only to have stronger non-deformability, and good heat conductivity, cooling power is strong, and effectively can resist hot-fluid impact, both solved when adopting single cast steel heat conductor 21 to be coated on each cooling tube 1 outside, the cast steel heat conductor 21 caused uses temperature towards the temperature of oven cavity side safely higher than it, wall body is caused to ftracture, the problems such as water pipe leaks, overcome again and adopt single copper heat conductor when being coated on the outer wall of each cooling tube 1, because of the bad mechanical property of copper material, the copper cooling wall caused is fragile, the defect that life-span is short, thus extend the working life of cooling stave, and then extend the work-ing life of blast furnace, the cooling stave of blast furnace provided by the invention is made to meet blast furnace to cooling stave cooling and the double requirements of mechanical property, in addition, the cooling stave of blast furnace of the present invention is the water pipe structure singly entering singly to go out, without the need to increasing the perforate of furnace shell water pipe, and mounting means is without any change.
Alternatively, cooling tube 1 is copper-bearing alloy pipe, wherein, the compo pipe of copper-bearing alloy pipe to be copper content be 0.15%-0.3%, this is prior art, and copper-bearing alloy pipe has good thermal conductivity, thus the cooling performance of cooling stave can be improved further, certainly, cooling tube also can be the thick walled steel tube with thermal conductive resin, and it has the effect of the cooling performance improving cooling stave equally.
Further, as shown in Figure 1, on the surface of blast furnace chamber, flame retardant coating 3 is provided with at body 2, protect body 2 towards the surface of blast furnace chamber by flame retardant coating 3, extend the work-ing life of body 2 further, thus extend the work-ing life of cooling stave, specifically, flame retardant coating 3 comprises: be located at cast steel heat conductor 21 towards the refractory brick 31 on the surface of blast furnace chamber, and be located at copper heat conductor towards the flame-retardant coating layer 32 on the surface of blast furnace chamber or the refractory casting bed of material, because copper heat conductor is light face towards the surface of blast furnace chamber, not easily be connected with refractory brick 31 brick, therefore, by forming flame-retardant coating layer 32 at copper heat conductor towards spray refractory coating on the surface of blast furnace chamber, or form the refractory casting bed of material by pouring into a mould refractory castable on the surface of blast furnace chamber at copper heat conductor, to extend the life-span of copper heat conductor, wherein, refractory brick 31, refractory paint and refractory castable are the refractory materials that those skilled in the art commonly use, and are not described in detail in this, and it should be noted that, in the cooling stave shown in Fig. 1, what arrange on the surface of blast furnace chamber at copper heat conductor is flame-retardant coating layer 32.
Particularly, as shown in Figure 1, cast steel heat conductor 21 is transversely interval with multiple dovetail-indent 211 towards the surface of blast furnace chamber, refractory brick 31 is provided with the projection matched with dovetail-indent 211, refractory brick 31 is connected by protruding on cast steel heat conductor 21 with dovetail-indent 211, protruding both simple and convenient with coordinating of dovetail-indent 211, increase again the contact area of cast steel heat conductor 21 and refractory brick 31, thus add the strength of joint between refractory brick 31 and cast steel heat conductor 21.
Again further; in order to avoid the liquid feeding end of cooling tube 1 and outlet end and body 2 junction affect fracture by external force; protective tube 4 is provided with at body 2 and each liquid feeding end of cooling tube 1 and the joint of outlet end; protective tube 4 can either avoid liquid feeding end and outlet end fracture in a certain degree; extend the work-ing life of cooling tube 1, can cooling performance be promoted again.
Alternatively, for the ease of installation and the placement of cooling stave, the upper end end face of body 2 is provided with suspension ring 5, by suspension ring 5, cooling stave is hung up.
As a preferred embodiment of the present invention, as shown in Figure 2, copper heat conductor comprises many copper heat conduction bars 22 be horizontally arranged at interval, specifically, at each cooling tube 1 towards body of heater high thermal load regions, such as: bosh, a coated bronze medal heat conduction bar 22 is transversely distinguished in the region such as furnace bosh and restoration of lower stack, namely at each cooling tube 1 towards body of heater high thermal load regions, copper heat conduction bar 22 is staggered with cast steel heat conductor 21, like this, cooling stave is made both to have had good heat conductivility and cooling performance, fast and effectively the heat passing to it in furnace chamber can be taken away by the water coolant flowed through in cooling tube 1, the mechanical property solving again copper material is poor, not wear-resistant, easy generation distortion, cause water pipe to snap and cause the problems such as cooling stave damage, make cooling stave can bear larger thermal stresses and there is stronger non-deformability, not only meet the demand of blast fumance, and extend the work-ing life of blast furnace.In addition, the cooling stave of blast furnace provided by the invention has very high cost performance, and its unit surface manufacturing cost is about 50% of copper cooling wall, is about 1.5 times of cast steel cooling wall.
Present invention also offers a kind of manufacture method of cooling stave of blast furnace, it comprises the following steps:
S1: multiple cooling tube is vertically in a mold placed side by side, liquid feeding end and the outlet end of each cooling tube all stretch out mould;
S2: pour into a mould cast steel solution in mould, the furnace chamber side that cast steel solution is at least coated on each cooling tube blast furnace dorsad forms cast steel heat conductor, and reserves the space of cast copper solutions;
S3: pour into a mould described copper solutions in reserving space, copper solutions is coated on the part formation copper heat conductor of each cooling tube towards the furnace chamber side of blast furnace, and copper heat conductor and cast steel heat conductor are combined to form body and are coated on multiple cooling tube outside.
Specifically, first each cooling tube is positioned in mould, then in mould, cast steel solution is poured into a mould, cast steel solution can reserve copper solutions cast region at each cooling tube towards the part of body of heater high thermal load regions, after the cooling of cast steel solution forms cast steel heat conductor, copper solutions is poured into a mould to the copper solutions cast region being positioned at mould, copper heat conductor is formed after copper solutions cooling, and engage with cast steel solution and form body to be coated on multiple cooling tube outside, cooling stave is made to integrate the advantage of cast steel physical strength height and copper material good cooling results, thus meet blast furnace to cooling stave cooling and the double requirements of physical strength, in addition, the cooling stave adopting aforesaid method to make is the water pipe structure singly entering singly to go out, without the need to increasing the perforate of furnace shell water pipe, and mounting means is without any change.
Particularly, when pouring into a mould copper solutions in reserving space, copper solutions lateral separation is coated on each cooling tube and forms towards the furnace chamber side of blast furnace the copper heat conductor be made up of many flat coppers heat conduction bar.Specifically, at each cooling tube towards body of heater high thermal load regions, such as: bosh, a coated bronze medal heat conduction bar is transversely distinguished in the region such as furnace bosh and restoration of lower stack, namely at each cooling tube towards body of heater high thermal load regions, cast steel heat conductor and copper heat conduction bar staggered, like this, cooling stave is made both to have had good heat conductivility and cooling performance, fast and effectively the heat passing to it in furnace chamber can be taken away by the water coolant flowed through in cooling tube, larger thermal stresses can be born again and there is stronger non-deformability, not only meet the demand of blast fumance, and extend the work-ing life of blast furnace.In addition, adopt the manufacture method of the cooling stave of blast furnace provided by the invention to make cooling stave and have very high cost performance, its unit surface manufacturing cost is about 50% of copper cooling wall, is about 1.5 times of cast steel cooling wall.
Further, after step S3, the manufacture method of the cooling stave of blast furnace is further comprising the steps of:
S4: inlay refractory brick at cast steel heat conductor on the surface of blast furnace chamber;
S5: at copper heat conductor towards spray refractory coating on the surface of blast furnace chamber or cast refractory castable, refractory paint or refractory castable engage formation flame retardant coating with refractory brick.
By flame retardant coating protection body towards the surface of blast furnace chamber, effectively extend the work-ing life of body, thus extend the work-ing life of cooling stave.In addition, because copper heat conductor is light face towards the surface of blast furnace chamber, not easily be connected with refractory brick brick, therefore, can by forming flame-retardant coating layer at copper heat conductor towards spray refractory coating on the surface of blast furnace chamber, or form the refractory casting bed of material, to extend the life-span of copper heat conductor by pouring into a mould refractory castable on the surface of blast furnace chamber at copper heat conductor; Wherein, refractory brick, refractory paint and refractory castable are the refractory materials that those skilled in the art commonly use, and are not described in detail in this.
In sum, the cooling stave of blast furnace provided by the invention, by at a part of coated copper heat conductor of each cooling tube towards body of heater high thermal load regions, the coated cast steel heat conductor in all the other positions, copper material is utilized to have heat conductivility excellent, cooling power is strong, stable slag crust can be formed in body of heater high thermal load regions, and after slag crust comes off, the advantage such as also to rebuild rapidly, and the advantage that cast steel physical strength is high, cooling stave is made not only to have stronger non-deformability, and good heat conductivity, cooling power is strong, and effectively can resist hot-fluid impact, in brief, the cooling stave of blast furnace provided by the invention advantage that is cast steel physical strength is high and copper material good cooling results is integrated in one, thus extend the working life of cooling stave, and then extend the work-ing life of blast furnace, meet the cooling performance of blast furnace to cooling stave and the double requirements of mechanical property, and compared with cast steel or copper cooling wall, there is very high cost performance.In addition, the cooling stave adopting the manufacture method of the cooling stave of blast furnace provided by the invention to make has all advantages of the cooling stave of above-mentioned blast furnace.
The foregoing is only the schematic embodiment of the present invention, and be not used to limit scope of the present invention.Any those of ordinary skill in the art, equivalent variations done under the prerequisite not departing from design of the present invention and principle and amendment, all should belong to the scope of protection of the invention.
Claims (10)
1. a cooling stave for blast furnace, it comprises: the multiple cooling tube be vertically arranged side by side and the body being coated on multiple described cooling tube outside, and liquid feeding end and the outlet end of each described cooling tube all extend described body, it is characterized in that,
Described body is combined by cast steel heat conductor and copper heat conductor, described cast steel heat conductor is at least coated on the furnace chamber side of each described cooling tube described blast furnace dorsad, and described copper heat conductor is coated on the part of each described cooling tube towards the furnace chamber side of described blast furnace.
2. the cooling stave of blast furnace according to claim 1, is characterized in that,
Described copper heat conductor comprises many copper heat conduction bars be horizontally arranged at interval.
3. the cooling stave of blast furnace according to claim 1, is characterized in that,
Described cooling tube is copper-bearing alloy pipe.
4. the cooling stave of blast furnace according to any one of claim 1 to 3, is characterized in that,
The surface of described body towards described blast furnace chamber is provided with flame retardant coating, and described flame retardant coating comprises:
Be located at described cast steel heat conductor towards the refractory brick on the surface of described blast furnace chamber;
Be located at described copper heat conductor towards the flame-retardant coating layer on the surface of described blast furnace chamber or the refractory casting bed of material.
5. the cooling stave of blast furnace according to claim 4, is characterized in that,
Described cast steel heat conductor is transversely interval with multiple dovetail-indent towards the surface of described blast furnace chamber, described refractory brick is provided with the projection matched with described dovetail-indent, and described refractory brick is connected on described cast steel heat conductor by described projection and described dovetail-indent.
6. the cooling stave of blast furnace according to claim 4, is characterized in that,
Protective tube is provided with at described body and the described liquid feeding end of each described cooling tube and the joint of described outlet end.
7. the cooling stave of blast furnace according to claim 4, is characterized in that,
The upper end end face of described body is provided with suspension ring.
8. a manufacture method for the cooling stave of blast furnace, is characterized in that, the manufacture method of the cooling stave of described blast furnace comprises the following steps:
Multiple cooling tube is vertically in a mold placed side by side, and liquid feeding end and the outlet end of each described cooling tube all stretch out described mould;
In mould, pour into a mould cast steel solution, the furnace chamber side that described cast steel solution is at least coated on each described cooling tube described blast furnace dorsad forms cast steel heat conductor, and reserves the space of cast copper solutions;
Described copper solutions is poured into a mould in reserving space, described copper solutions is coated on the part formation copper heat conductor of each described cooling tube towards the furnace chamber side of described blast furnace, and described copper heat conductor and described cast steel heat conductor are combined to form body and are coated on multiple described cooling tube outside.
9. the manufacture method of the cooling stave of blast furnace according to claim 8, is characterized in that,
When pouring into a mould described copper solutions in reserving space, described copper solutions lateral separation is coated on each described cooling tube and forms towards the furnace chamber side of described blast furnace the described copper heat conductor be made up of many flat coppers heat conduction bar.
10. the manufacture method of the cooling stave of blast furnace according to claim 8 or claim 9, is characterized in that,
After the outside coated body of multiple described cooling tube, the manufacture method of the cooling stave of described blast furnace is further comprising the steps of:
On the surface of described blast furnace chamber, refractory brick is inlayed at described cast steel heat conductor;
At described copper heat conductor towards spray refractory coating on the surface of described blast furnace chamber or cast refractory castable, described refractory paint or described refractory castable engage formation flame retardant coating with described refractory brick.
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| CN107236837A (en) * | 2017-08-01 | 2017-10-10 | 中冶京诚工程技术有限公司 | A kind of assembled cooling equipment for blast furnace |
| CN108034782A (en) * | 2017-09-28 | 2018-05-15 | 中冶华天南京工程技术有限公司 | A kind of new throat armour |
| CN108315517A (en) * | 2018-03-30 | 2018-07-24 | 湖州虹君机械有限公司 | Copper quickly cooling device |
| CN108754055A (en) * | 2018-08-15 | 2018-11-06 | 汕头华兴冶金设备股份有限公司 | A kind of band convex copper cooling wall and its manufacturing method |
| CN109161622A (en) * | 2018-09-29 | 2019-01-08 | 济南荣庆节能技术有限公司 | A kind of blast furnace cooling stave and its manufacturing method |
| CN109280728A (en) * | 2018-11-07 | 2019-01-29 | 中冶赛迪工程技术股份有限公司 | A kind of blast furnace cooling stave structure |
| CN110563473A (en) * | 2019-10-14 | 2019-12-13 | 北京瑞普同创科技发展有限公司 | Novel cooling wall refractory material, preparation method and blast furnace cooling wall |
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| CN111334629A (en) * | 2020-01-03 | 2020-06-26 | 中冶华天工程技术有限公司 | Cooling wall structure for improving cooling strength of blast furnace |
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| CN107236837A (en) * | 2017-08-01 | 2017-10-10 | 中冶京诚工程技术有限公司 | A kind of assembled cooling equipment for blast furnace |
| CN108034782A (en) * | 2017-09-28 | 2018-05-15 | 中冶华天南京工程技术有限公司 | A kind of new throat armour |
| CN108315517A (en) * | 2018-03-30 | 2018-07-24 | 湖州虹君机械有限公司 | Copper quickly cooling device |
| CN108754055A (en) * | 2018-08-15 | 2018-11-06 | 汕头华兴冶金设备股份有限公司 | A kind of band convex copper cooling wall and its manufacturing method |
| CN108754055B (en) * | 2018-08-15 | 2024-03-22 | 汕头华兴冶金设备股份有限公司 | Copper cooling wall with boss and manufacturing method thereof |
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| CN110563473A (en) * | 2019-10-14 | 2019-12-13 | 北京瑞普同创科技发展有限公司 | Novel cooling wall refractory material, preparation method and blast furnace cooling wall |
| CN110669888A (en) * | 2019-10-23 | 2020-01-10 | 中冶赛迪工程技术股份有限公司 | Brick inlaying and brick combining for blast furnace cooling wall and cooling wall structure |
| CN111334629A (en) * | 2020-01-03 | 2020-06-26 | 中冶华天工程技术有限公司 | Cooling wall structure for improving cooling strength of blast furnace |
| CN111100962A (en) * | 2020-01-09 | 2020-05-05 | 鞍钢重型机械有限责任公司 | Blast furnace cooling wall with detachable lifting ring and preparation method thereof |
| CN111424125A (en) * | 2020-05-15 | 2020-07-17 | 马鞍山市润通重工科技有限公司 | Cast steel cooling wall with uniformly arranged cooling water pipe grooves and machining process thereof |
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| CN105177203B (en) | 2017-12-26 |
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