CN113957190B - Cooling plate for blast furnace and maintenance method thereof - Google Patents
Cooling plate for blast furnace and maintenance method thereof Download PDFInfo
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- CN113957190B CN113957190B CN202010706527.1A CN202010706527A CN113957190B CN 113957190 B CN113957190 B CN 113957190B CN 202010706527 A CN202010706527 A CN 202010706527A CN 113957190 B CN113957190 B CN 113957190B
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- C21B7/10—Cooling; Devices therefor
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Abstract
The invention discloses a cooling plate for a blast furnace, which comprises an outer chamber water pipe, an inner chamber water pipe and a connecting pipe, wherein an outer chamber water channel is arranged in the outer chamber water pipe, a water inlet pipe joint is arranged at one end of the outer chamber water pipe, and an outer chamber connecting joint is arranged at the other end of the outer chamber water pipe; the inner chamber water pipe is attached to the inner side of the outer chamber water pipe, an inner chamber water channel is formed in the inner chamber water pipe, a water outlet pipe joint is arranged at the same side end of the inner chamber water pipe and the water inlet pipe joint, and an inner chamber communication joint is arranged at the same side end of the outer chamber communication joint; the two ends of the connecting pipe are provided with connectors which are detachably connected with the outer chamber connecting connector and the inner chamber connecting connector respectively. The invention also discloses a maintenance method of the cooling plate for the blast furnace and a structure of connecting a plurality of cooling plates into a string. Because the inner and outer chamber double water channels and the connecting pipe are adopted, the inner and outer chamber water channels are connected into the cooling water channel, when the front end of the cooling plate is abraded and leaks water, the connecting pipe is only needed to be disassembled, the inlet water is changed into the inner chamber connecting joint, the leaking outer chamber water channel can be disassembled, and the water can be continuously kept for cooling through the inner chamber water channel, and the change of damping down is not needed.
Description
Technical Field
The invention relates to a blast furnace cooling device, in particular to a cooling plate for a blast furnace and a maintenance method thereof.
Background
The blast furnace cooling design not only determines the reasonable blast furnace operation internal form formed in the production process, ensures good gas flow distribution and better technical and economic indexes, but also determines the service life of the first-generation furnace life of the blast furnace.
In the production process of the blast furnace, the blast furnace lining and cooling equipment are subjected to complicated chemical erosion, mechanical friction, thermal stress and high temperature, the cooling equipment and the brick lining at the middle lower part of the furnace body resist the chemical and physical erosion in the furnace under the cooling of cooling water, the insufficient cooling directly causes the erosion of refractory materials and the burning of the cooling equipment, and the cooling structure of the furnace body of the blast furnace is the most important basic condition for prolonging the service life of the blast furnace. When the cooling equipment at the middle lower part of the furnace body is damaged to a certain extent, the furnace is stopped for intermediate maintenance or overhaul so as to ensure the production safety of the blast furnace. Various countries have made many investigations and researches on the cooling structure of the blast furnace body to improve the service life of the first generation of blast furnace as much as possible.
With the large-scale and intensified smelting of blast furnaces, the optimization of cooler structures and cooler materials and cooling modes for blast furnaces is becoming more important. Common cooling equipment includes staves, cooling plates, and the like. The cooling mode of the blast furnace body in China mainly comprises a cooling plate type blast furnace, a full-cooling wall blast furnace and a blast furnace used by matching a cooling plate with a cooling wall, wherein a part of the blast furnace is provided with a copper cooling wall with higher cooling strength in order to strengthen the cooling strength of the furnace belly and the furnace waist. Blast furnaces with different cooling forms have different characteristics, such as less initial investment of the blast furnace with a full cooling wall and more adoption of newly-built blast furnaces, but have the following defects: the cooling wall can not be replaced on line after being damaged, and can be replaced only by long-time damping down or middle repair, the slag adhering capacity in the production process of the cooling wall is weak, and the production operation is difficult; although the cooling plate blast furnace or the blast furnace combined with the plate wall has large initial investment and large installation workload, the cooling plate blast furnace has the characteristics of strong slag hanging capacity, easy operation of the blast furnace, capability of replacing the cooling plate by short-time fixed repair after the cooling plate is damaged and the like, and is favored by some enterprises so far.
The cooling plate is divided into a single-chamber single channel, a double-channel, a four-channel, a single-chamber six-channel, a double-chamber single channel, a double-channel, a four-channel, a double-chamber six-channel cooling plate. Since the early cooling plate passages were relatively large, the water velocity was low, typically O.2-0.3 m/s. At such low water velocities, very little pressure drop occurs and heat transfer is not efficient. In a high heat portion such as a cooling plate head, if heat transfer efficiency between the inner wall of the cooling plate and water is not high, the temperature of the cooling plate wall is increased, so that it is necessary to secure mechanical strength of the cooling plate head. For this reason, it is consistent that the average copper temperature must not exceed 120 ℃. In order to lower the temperature below this value, the water velocity at the head of the cooling plate is required to be 1.06 to 1.5m/s, and in order to meet the demand, multi-channel cooling plates have been developed. This type of cooling plate head water flow channel is small and although the water volume is not increased, the water velocity is high.
Both single pass and head forced cooled cooling plates present an inherent problem: if the front end of the cooling plate leaks, the cooling plate must be disassembled and replaced. To solve this problem, dual-chambered cold plates have also been developed, of the type which utilize two independent circuits, an outer chamber to cool the exterior wall and the cold plate head, and an inner chamber to cool the cold plate body.
Although the blast furnace with the full cooling wall has the defect that after being produced for several years, the cooling wall at the furnace belly and furnace waist part is damaged in a large area and then needs to be repaired for 1-2 months, the cooling mode of the full cast iron cooling wall or the copper cooling wall at the furnace belly and furnace waist part is mostly used in the selection of the furnace body cooler of the newly-built large blast furnace of the domestic and foreign iron and steel enterprises, except the factor of low construction investment of the cooling wall blast furnace, the following problems still exist in the production of the cooling plate blast furnace:
(1) The cooling plate head is easily worn. The cooling wall structure adopts a form that a steel cooling water pipe is embedded in the wall body, the hot surface of the wall body is protected by the embedded bricks, the water pipe can be protected by wall body materials after the embedded bricks are corroded, and the production can be maintained even after the wall body materials are worn.
The cooling plate is mostly formed by rolling or casting copper, the water channel and the body are integrated, namely the front end of the cooling plate is worn, and the cooling plate is damaged as long as one point is worn, needs to be disassembled immediately and is separated from a cooling system. Therefore, the material of the cooling plate is improved, and steel cooling plates, copper-steel composite cooling plates and the like are developed, but the problem cannot be solved well.
(2) After the front end of the cooling plate is damaged, a cooling blind area exists after the front end of the cooling plate is separated from a cooling system. After the cooling wall of the cooling wall blast furnace is broken and disintegrated, the cooling wall blast furnace can well protect the furnace skin from being directly contacted with high-temperature furnace charge and coal gas flow, but the cooling plates are point-type cooled, under the normal condition, after refractory materials between the cooling plates are corroded, the cooling effect of the cooling plates is relied on to form the furnace skin for protecting the furnace skin, after the cooling plates are broken and disintegrated, a cooling blind area exists in the area, the furnace skin cannot be effectively formed, the furnace skin directly faces to the corrosion of the high-temperature furnace charge and the coal gas, so that in the later period of furnace service, when the local area of the cooling plates is intensively damaged and disintegrated, the area cannot be effectively cooled, and the occurrence of events such as furnace skin redness, furnace skin cracking and the like which endanger the long service life of the blast furnace, the safe production and the like can be caused. At present, the common practice is that a furnace skin watering mode is adopted to cool in an area with a lot of damage to a cooling plate, so that the field environment is severe, and even furnace skin watering flows into a blast furnace from a cracking position to cause potential safety hazards in production. Therefore, people improve the internal structure of the cooling plate, separate the internal chamber and the external chamber of the cooling plate, and lead water through two water pipes, for example, patents with application numbers of 201220133392.5, 200920033211.X and the like, under the normal production condition, after the cooling plate is worn, the outermost water channel is mainly damaged, and at the moment, the cooling plate part can be still effectively cooled as long as water is fed into the outer chamber water channel which is disassembled. However, the connection pipeline of the blast furnace body cooling system is increased by 1 time, the purchase and maintenance cost of equipment such as pipelines, valves and flowmeters is increased by times, the installation workload and the workload of daily production maintenance, leakage detection of a fixed maintenance system, disassembly of a cooling plate and the like are greatly increased, and therefore, the method is not effectively applied.
In summary, the existing cooling plates have the disadvantages of easy abrasion, ineffective protection of the furnace shell and the like due to structural problems, and the furnace shell is easily cooled down and becomes red, cracked and the like after the cooling plates are damaged and disintegrated, which affects the long service life and the safety production, so that most blast furnaces are more inclined to select a cooling wall which is likely to face 1 or more times of intermediate repair in the first-generation furnace campaign in the aspect of selecting a cooling system of a newly-built large blast furnace.
Disclosure of Invention
In order to solve the above problems of the prior art, the present invention provides a cooling plate for a blast furnace and a maintenance method thereof, which can maintain cooling through an inner chamber water channel and an outer chamber water channel by pressing refractory material without replacing the cooling plate as a whole when the front end of the cooling plate is worn, thereby prolonging the service life.
On one hand, the cooling plate for the blast furnace comprises an outer chamber water pipe, an inner chamber water pipe and a connecting pipe, wherein an outer chamber water channel is arranged in the outer chamber water pipe, a water inlet pipe connector is arranged at one end of the outer chamber water pipe, and an outer chamber connecting connector is arranged at the other end of the outer chamber water pipe; the inner chamber water pipe is attached to the inner side of the outer chamber water pipe, an inner chamber water channel is formed in the inner chamber water pipe, a water outlet pipe joint is arranged at the same side end of the inner chamber water pipe and the water inlet pipe joint, and an inner chamber communication joint is arranged at the same side end of the outer chamber communication joint; the two ends of the connecting pipe are provided with connectors which are detachably connected with the outer chamber connecting connector and the inner chamber connecting connector respectively.
The outer chamber water pipe is a U-shaped pipe, and an outer chamber U-shaped water channel is formed in the pipe.
The inner chamber water pipe comprises an inner chamber U-shaped inner side wall, a sealing plate and an L-shaped partition plate, the inner chamber U-shaped inner side wall and an outer chamber U-shaped inner side wall of the outer chamber water pipe form an inner chamber outer side U-shaped water channel, the inner chamber connection joint is connected to one end of the inner chamber outer side U-shaped water channel, the sealing plate is connected between the water outlet pipe joint and the inner chamber connection joint, the sealing plate and the inner chamber U-shaped inner side wall form an inner chamber inner side water channel, one end of the sealing plate is communicated with the inner chamber outer side U-shaped water channel, and the other end of the sealing plate is connected to the S shape of the water outlet pipe joint.
In another aspect, a method for maintaining a cooling plate for a blast furnace includes the steps of:
a. and (3) disintegration operation of the outer chamber water channel: removing the connecting pipe, changing the original water inlet pipe joint into the inner chamber connecting joint for water inlet, and discharging water from the inner chamber water channel to the water outlet pipe joint;
b. lining operation of outer chamber water channel: and pressing lining materials into the water inlet pipe joint and the outer chamber communication joint by using hard pressing equipment and filling the outer chamber water channel.
The lining making material is a refractory material.
In a third aspect, a plurality of cooling plates for a blast furnace are connected into a string structure, which comprises a plurality of cooling plates, a water inlet pipe and a water outlet pipe.
When the cooling plate is normal, the water inlet pipe is connected with the water inlet pipe joint of the first cooling plate, the water outlet pipe joint of the previous cooling plate is connected with the water inlet pipe joint of the next cooling plate between the two adjacent cooling plates through a connecting pipe with a valve, and the water outlet pipe is connected with the water outlet pipe joint of the last cooling plate;
when the front end of the cooling plate is worn, the connecting pipe of the cooling plate is removed, and the connecting pipe connected with the water outlet pipe joint of the previous cooling plate is connected to the inner chamber connecting joint of the cooling plate.
The cooling plate for the blast furnace and the maintenance method thereof have the following beneficial effects:
(1) The effective cooling life of the cooling plate is prolonged. The existing single-chamber cooling plate needs to be integrally disassembled after being damaged, and the existing double-chamber cooling plate can be disassembled from an outer water channel after being damaged, but two sets of cooling systems exist. The invention adopts double water channels of the inner chamber and the outer chamber under a set of cooling system, and the water channels of the inner chamber and the outer chamber are connected into one cooling water channel through the connecting pipe in normal time, after the inner chamber and the outer chamber are damaged, the damaged cooling plate can be switched into double chambers from a single chamber, only the outer chamber water channel is disintegrated, the cooling of the inner chamber water channel is continuously kept, the water leakage of a cooler into the blast furnace is prevented, and the effective cooling life of the cooling plate is prolonged.
(2) And lining maintenance is carried out on the damaged cooling plate, so that the service life is prolonged. Under normal production conditions, the damage of the cooling plate of the blast furnace is caused by the grinding leakage of the front end of the cooling plate. After the existing double-chamber cooling plate is disassembled from the outer chamber water channel, coal gas or water vapor exists in the water channel, the cooling effect of the inner chamber water channel is deteriorated due to the air cushion effect, the temperature of the front end of the cooling plate is increased, and the wear resistance of metals such as steel, copper and the like is deteriorated along with the temperature increase, so that the outer chamber water channel of the cooling plate is quickly worn off until the inner chamber water channel directly faces high-temperature furnace burden and coal gas. If the inner chamber water channel is abraded again, the cooling plate needs to be completely disassembled. After the outer chamber water channel is disintegrated, the lining material is pressed in by utilizing the cavity of the outer chamber water channel and is solidified at high temperature, and the lining material is effectively cooled by the inner chamber water channel, so that the abrasion of the front end of the cooling plate is more effectively delayed, and the service life of the cooling plate is prolonged.
Drawings
FIG. 1 is a schematic sectional view of a cooling plate for a blast furnace according to the present invention;
FIG. 2 is a schematic view showing a state of maintenance of a cooling plate for a blast furnace according to the present invention;
FIG. 3 is a schematic view of a plurality of cooling plates of the present invention normally connected in a string;
FIG. 4 is a schematic view of a third cooling plate of the present invention connected in a string after wear.
Detailed Description
The cooling plate for a blast furnace according to the present invention will be further described with reference to the accompanying drawings and examples.
As shown in fig. 1, the cooling plate for the blast furnace of the present invention mainly comprises an outer chamber water pipe 1, an inner chamber water pipe 2 and a connecting pipe 3, wherein an outer chamber water channel 11 is arranged in the outer chamber water pipe 1, as an embodiment, the outer chamber water pipe 1 is a U-shaped pipe, an outer chamber U-shaped water channel is formed in the pipe, one end of the pipe is provided with a water inlet pipe joint 12, and the other end of the pipe is provided with an outer chamber connecting joint 13; the inner chamber water pipe 2 is attached to the inner side of the outer chamber water pipe 1, an inner chamber water channel is arranged in the inner chamber water pipe, a water outlet pipe joint 21 is arranged at the same side end of the water inlet pipe joint 12, an inner chamber connection joint 22 is arranged at the same side end of the outer chamber connection joint 13, the inner chamber water channel specifically comprises an inner chamber U-shaped inner side wall 23, a sealing plate 24 and an L-shaped partition plate 25, the inner chamber U-shaped inner side wall 23 and an outer chamber U-shaped inner side wall 14 of the outer chamber water pipe 1 form an inner chamber outer side U-shaped water channel 26, the inner chamber connection joint 22 is connected to one end of the inner chamber outer side U-shaped water channel 26, the sealing plate 24 is connected between the water outlet pipe joint 21 and the inner chamber connection joint 22 and forms an inner chamber inner side water channel 27 together with the inner chamber U-shaped inner side wall 23, and the inner chamber inner side water channel 27 is separated into an S shape with one end communicated with the inner chamber outer side U-shaped water channel 26 and the other end connected to the water outlet pipe joint 21 by the L-shaped partition plate 25 (the inner chamber partition plate 25 mainly serves to separate the inner chamber water pipe and divide the water pipe into two inner chamber U-shaped water channels 26 and 27, which are generally called 4 channels). The two ends of the connection tube 3 are provided with connectors 31 for detachably connecting with the outer chamber connection connector 13 and the inner chamber connection connector 22, respectively. After the connecting pipe 3 is installed, the internal and external indoor water channels can be trained into a cooling water channel connected end to end, and after the connecting pipe 3 is removed, as shown in fig. 2, the internal and external indoor water channels are independent.
When the cooling plate for the blast furnace of the present invention is used, in a normal state, after the connecting pipe 3 is installed, water is supplied from the water inlet pipe joint 12, passes through the outer chamber water channel 11 and the inner chamber water channel, and then is discharged from the water outlet pipe joint 21 (the dotted arrows in fig. 1 indicate the inlet and outlet directions of the cooling water). When the front end of the cooling plate is worn out (as shown at A in FIG. 2), and maintenance is needed, the following maintenance method is performed:
a. disintegration operation of the outer chamber waterway 11: the connecting pipe 3 is removed, the original water inlet pipe joint 12 is changed into the water inlet through the inner chamber connecting joint 22, the cooling water only flows through the inner chamber water channel to the water outlet pipe joint 21 to discharge water (the dotted arrow in fig. 2 indicates the inlet and outlet direction of the cooling water), the cooling is continuously maintained, and the outer chamber water channel 11 with the front end abrasion point is not flowed with water to realize the disintegration;
b. lining operation of the outer chamber water channel 11: the lining material 15 is pressed in through the water inlet pipe joint 12 and the outer chamber communication joint 13 by a hard press-in device and filled in the outer chamber water passage 11 (the solid arrow in fig. 2 indicates the lining material press-in direction). The lining material can be made of conventional lining refractory materials, can be solidified in a high-temperature environment, and the inner water channel can effectively cool the lining material.
In practical application of a blast furnace, a plurality of cooling water channels connected in series are generally adopted, as shown in fig. 3 and 4, a series structure of 5 cooling plates 100 of the present invention is shown, which includes a water inlet pipe 4 and a water outlet pipe 5 in addition to the cooling plates 100,
in normal times, the water inlet pipe 4 is connected with the water inlet pipe joint 12 of the first cooling plate 100, the water outlet pipe joint 21 of the previous cooling plate 100 is connected with the water inlet pipe joint 12 of the next cooling plate 100 between the two adjacent cooling plates 100 through the connecting pipe 6 with a valve, and the water outlet pipe 5 is connected with the water outlet pipe joint 21 of the last cooling plate 100;
when the front end of the cooling plate 100 is worn out (the third worn out piece is schematically shown in fig. 4, but there may be more pieces), the valve of the connection pipe 6 of the worn out cooling plate 100 connected to the outlet pipe joint 21 of the previous cooling plate 100 is closed, then the connection pipe 3 on the cooling plate 100 is removed, the outer chamber water channel 11 is disassembled, the connection pipe 6 = connected to the outlet pipe joint 21 of the previous cooling plate 100 is connected to the inner chamber connection joint 22 of the cooling plate 100, and finally the valve on the connection pipe 6 is opened, so that the cooling can be maintained, and the outer chamber water channel 11 is maintained for lining maintenance, so that the cooling plate 100 can be used continuously until the next maintenance period (generally 3-6 months) and then replaced separately.
In summary, the cooling plate for the blast furnace and the maintenance method thereof of the invention adopt the double water channels of the inner chamber and the outer chamber, and connect the water channels of the inner chamber and the outer chamber into one cooling water channel through the connecting pipe 3 in normal condition aiming at the problem that once the front end of the cooling plate is worn and leaked, when the front end of the cooling plate is worn, the connecting pipe 3 is only needed to be removed, and the water inlet is changed to the connecting joint 22 of the inner chamber, so that the water leakage water channel 11 of the outer chamber can be removed, and the cooling can be continuously maintained for use through the water passing of the inner chamber water channel. The method has the advantages that damping down maintenance is not needed, the independent replacement of the worn cooling plate can be maintained until the maintenance period, the effective cooling service life of the cooling plate is prolonged, and the working period of the blast furnace is ensured.
Claims (6)
1. A cooling plate for a blast furnace, characterized in that: the water-saving device comprises an outer chamber water pipe, an inner chamber water pipe and a connecting pipe, wherein an outer chamber water channel is arranged in the outer chamber water pipe, a water inlet pipe connector is arranged at one end of the outer chamber water pipe, and an outer chamber connecting connector is arranged at the other end of the outer chamber water pipe; the inner chamber water pipe is attached to the inner side of the outer chamber water pipe, an inner chamber water channel is arranged in the inner chamber water pipe, a water outlet pipe joint is arranged at the end of the inner chamber water pipe, which is the same as the water inlet pipe joint, and an inner chamber communication joint is arranged at the end of the inner chamber water pipe, which is the same as the outer chamber communication joint; the two ends of the connecting pipe are provided with connectors which are detachably connected with the outer chamber connecting connector and the inner chamber connecting connector respectively.
2. The cooling plate for a blast furnace as set forth in claim 1, wherein: the outer chamber water pipe is a U-shaped pipe, and an outer chamber U-shaped water channel is formed in the pipe.
3. The cooling plate for a blast furnace as set forth in claim 1, wherein: the inner chamber water pipe comprises an inner chamber U-shaped inner side wall, a sealing plate and an L-shaped partition plate, the inner chamber U-shaped inner side wall and an outer chamber U-shaped inner side wall of the outer chamber water pipe form an inner chamber outer side U-shaped water channel, an inner chamber connection joint is connected to one end of the inner chamber outer side U-shaped water channel, the sealing plate is connected between the water outlet pipe joint and the inner chamber connection joint, the sealing plate and the inner chamber U-shaped inner side wall form an inner chamber inner side water channel, one end of the sealing plate is communicated with the inner chamber outer side U-shaped water channel through the L-shaped partition plate, and the other end of the sealing plate is connected to the S shape of the water outlet pipe joint.
4. The method for maintaining a stave for a blast furnace according to claim 1, comprising the steps of:
a. and (3) disintegration operation of the outer chamber water channel: removing the connecting pipe, changing the original water inlet pipe joint into the inner chamber connecting joint for water inlet, and discharging water from the inner chamber water channel to the water outlet pipe joint;
b. lining operation of outer chamber water channel: and pressing lining materials into the water inlet pipe joint and the outer chamber communication joint by using hard pressing equipment and filling the outer chamber water channel.
5. The method of maintaining a cooling plate for a blast furnace as set forth in claim 4, wherein said lining material is a refractory material.
6. A cooling plate for a blast furnace as set forth in claim 1, wherein: comprises a plurality of cooling plates, a water inlet pipe and a water outlet pipe,
when the cooling plate is normal, the water inlet pipe is connected with the water inlet pipe joint of the first cooling plate, the water outlet pipe joint of the previous cooling plate is connected with the water inlet pipe joint of the next cooling plate between the two adjacent cooling plates through a connecting pipe with a valve, and the water outlet pipe is connected with the water outlet pipe joint of the last cooling plate;
when the front end of the cooling plate is worn, the connecting pipe of the cooling plate is removed, and the connecting pipe connected with the water outlet pipe joint of the previous cooling plate is connected to the inner chamber connecting joint of the cooling plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010706527.1A CN113957190B (en) | 2020-07-21 | 2020-07-21 | Cooling plate for blast furnace and maintenance method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010706527.1A CN113957190B (en) | 2020-07-21 | 2020-07-21 | Cooling plate for blast furnace and maintenance method thereof |
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| CN113957190A CN113957190A (en) | 2022-01-21 |
| CN113957190B true CN113957190B (en) | 2022-10-21 |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2654438B1 (en) * | 1989-11-14 | 1994-04-01 | Chavanne Ketin | COOLING PLATES FOR BLAST FURNACES AND COOLING INSTALLATION USING THIS TYPE OF PLATES. |
| JP3635779B2 (en) * | 1996-04-30 | 2005-04-06 | Ｊｆｅスチール株式会社 | Blast furnace wall cooling plate |
| CN1200116C (en) * | 2002-10-01 | 2005-05-04 | 中冶赛迪工程技术股份有限公司 | Blast furnace cooling board |
| IT1403883B1 (en) * | 2010-08-06 | 2013-11-08 | Tenova Spa | FLUID-COOLED PANEL FOR METALLURGICAL OVENS, COOLING SYSTEM FOR METALLURGICAL OVENS INCLUDING SUCH PANEL AND METALLURGICAL OVEN INCORPORATING THE SAME |
| CN202519272U (en) * | 2012-03-31 | 2012-11-07 | 闽东宏宇冶金备件有限公司 | Cooling plate of blast furnace |
| DE102012013494A1 (en) * | 2012-07-09 | 2014-01-09 | Kme Germany Gmbh & Co. Kg | Cooling element for a melting furnace |
| CN207121612U (en) * | 2017-08-28 | 2018-03-20 | 江西余越科技有限公司 | A kind of copper cooling plate |
| CN209024570U (en) * | 2018-10-09 | 2019-06-25 | 鞍钢股份有限公司 | Water supply system for cooling plate of blast furnace |
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2020
- 2020-07-21 CN CN202010706527.1A patent/CN113957190B/en active Active
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