CN211367612U - Long-life blast furnace bottom hearth system - Google Patents
Long-life blast furnace bottom hearth system Download PDFInfo
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- CN211367612U CN211367612U CN201921910135.6U CN201921910135U CN211367612U CN 211367612 U CN211367612 U CN 211367612U CN 201921910135 U CN201921910135 U CN 201921910135U CN 211367612 U CN211367612 U CN 211367612U
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Abstract
The utility model discloses a longeval type blast furnace stove bottom hearth system, include: hearth, stove bottom, this long-life type blast furnace stove bottom hearth system still includes: the conical stove outer diameter diminishes gradually from bottom to top, the resistant material of stove bottom and the resistant material of stove jar of setting in conical stove outer diameter to and stove bottom cooling device, stove bottom monitoring sensor, stove jar cooling device and stove jar monitoring sensor, wherein: the furnace bottom refractory is arranged on the furnace bottom; the furnace bottom cooling equipment is connected with the furnace bottom refractory and is used for providing cooling water for the furnace bottom refractory; the furnace bottom monitoring sensor is connected with the furnace bottom refractory material and is used for monitoring the temperature of the furnace bottom refractory material; the hearth refractory is annularly arranged on the furnace bottom refractory; the hearth cooling equipment is connected with the hearth refractory material and used for providing cooling water for the hearth refractory material; and the hearth monitoring sensor is connected with the hearth refractory material and used for monitoring the temperature of the hearth refractory material. Through the utility model discloses, can reduce the destroyed potential safety hazard of the refractory material of crucible.
Description
Technical Field
The utility model relates to a metallurgical industry ironmaking field, concretely relates to long-life type blast furnace stove bottom hearth system.
Background
The weak links of the service life of the blast furnace are the furnace bottom, the furnace hearth, the furnace belly, the furnace waist and the lower part of the furnace body. The temperature of the molten iron and the slag in the hearth is generally 1450-1500 ℃, particularly, a large amount of coal gas is generated by burning coke in a tuyere area, the highest temperature area in the blast furnace is provided, and the temperature is 2000-2300 ℃. As a refractory material for the inner liners of the furnace bottom and the furnace hearth, the refractory material is subjected to the action of high temperature and the chemical erosion of iron slag and the scouring of molten iron. The furnace bottom mainly comprises infiltration erosion of molten iron, and the erosion of alkali and zinc is also serious. The hearth and the hearth of the blast furnace are the areas of the blast furnace with the highest load, and the service life of the hearth and the hearth determines the length of the service life of the blast furnace.
The traditional furnace bottom and hearth structures of the blast furnace at home and abroad can be summarized as two types: heat insulation type composite construction, heat conduction type all-carbon brick structure.
The heat insulation type composite structure mainly comprises carbon bricks and a ceramic cup, and has the main defects that: irreversible consumption protection of the ceramic cup; the thermal expansion of the ceramic cup and the carbon brick is greatly different, so that the internal stress is concentrated, and the phenomena of upwarping of an air port, cracking of a furnace shell and the like are easily caused; the expansion gap between the ceramic cup and the carbon brick is easy to enrich alkali metal, and a channel is provided for zinc steam, molten iron and coal gas; contradict with the hearth heat transfer system, the hearth cooling water is useless and has larger loss. When the erosion is almost finished, the ceramic cup may suddenly collapse locally and cannot quickly form a protective layer, so that the carbon brick is directly exposed in molten iron without protection, and the erosion of the carbon brick is accelerated. The ramming material layer between the furnace bottom ceramic pad and the surrounding carbon bricks becomes a weak link, and after the ramming material layer is locally corroded, molten iron can penetrate below the ceramic pad to enable the ceramic pad to float.
The defects of the heat-conducting all-carbon brick structure mainly comprise: the carbon brick has poor molten iron corrosion resistance, oxidation resistance and scouring resistance. Due to the existence of the circulation and the solidification latent heat of the molten iron, the formed slag iron solidification layer is not stable enough. In addition, the carbon brick has high temperature, is easy to erode and embrittle, and has large heat loss of the hearth.
At present, the water cooling structure is adopted, the water cooling systems of the furnace bottom and the tuyere large sleeve are connected in series, the furnace hearth cooling system is connected with the cooling systems of the furnace belly, the furnace waist and the furnace body in series, and the protection of the refractory materials of the furnace bottom and the furnace hearth is realized through the heat exchange effect of cooling water.
In the conventional design, the furnace shell corresponding to the furnace hearth is in a cylindrical shape with the same diameter from bottom to top. When the refractory material of the hearth has a floating tendency due to the buoyancy of molten iron, the refractory material of the hearth can be prevented from floating upwards only by the friction force between the furnace shell and the refractory material of the hearth, the furnace shell does not have additional constraint on the refractory material of the hearth, and the refractory material of the hearth is easy to damage.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a long-life bottom hearth system of a blast furnace, so as to solve the above mentioned problem that the refractory material of the hearth is easily damaged.
According to an aspect of the utility model, a long-life type blast furnace bottom hearth system is provided, long-life type blast furnace bottom hearth system includes: hearth, stove bottom, long-life type blast furnace stove bottom hearth system still includes: conical stove outer diameter from bottom to top diminishes, sets up the resistant material of stove bottom and the resistant material of stove jar in the conical stove outer diameter to and stove bottom cooling device, stove bottom monitoring sensor, stove jar cooling device and stove jar monitoring sensor, wherein: the furnace bottom refractory is arranged on the furnace bottom; the furnace bottom cooling equipment is connected with the furnace bottom refractory material and is used for providing cooling water for the furnace bottom refractory material; the furnace bottom monitoring sensor is connected with the furnace bottom refractory material and is used for monitoring the temperature of the furnace bottom refractory material; the hearth refractory is annularly arranged on the furnace bottom refractory; the hearth cooling equipment is connected with the hearth refractory material and used for providing cooling water for the hearth refractory material; the hearth monitoring sensor is connected with the hearth refractory and used for monitoring the temperature of the hearth refractory.
Further, the furnace bottom monitoring sensor is connected with the furnace bottom cooling device and used for monitoring the cooling water quantity and the cooling water temperature of the furnace bottom cooling device.
Further, the hearth monitoring sensor is connected with the hearth cooling device and used for monitoring the cooling water quantity and the cooling water temperature of the hearth cooling device.
Preferably, the long-life blast furnace bottom hearth system further comprises: and the regulation and control equipment is respectively connected with the furnace bottom cooling equipment, the furnace bottom monitoring sensor, the furnace hearth cooling equipment and the furnace hearth monitoring sensor and is used for regulating the cooling water quantity of the furnace bottom cooling equipment according to the monitoring data of the furnace bottom monitoring sensor and regulating the cooling water quantity of the furnace hearth cooling equipment according to the monitoring data of the furnace hearth monitoring sensor.
Preferably, the hearth refractory is of a full-paved structure.
Preferably, the refractory material of the hearth has a predetermined thickness so that molten iron flows from the bottom of the dead material column to the tap hole during tapping.
Specifically, the hearth refractory and the hearth refractory are refractory materials, and the thermal conductivity of the refractory materials tends to decrease from the cold surface to the hot surface of the blast furnace.
Preferably, the long-life blast furnace bottom hearth system further comprises: and a plurality of temperature measuring elements provided at different positions of the hearth refractory and the hearth refractory.
Preferably, the temperature measuring element is a thermocouple.
The furnace bottom monitoring sensor monitors a temperature measuring element arranged in the furnace bottom refractory to acquire the temperature of the furnace bottom refractory, and the hearth monitoring sensor monitors a temperature measuring element arranged in the hearth refractory to acquire the temperature of the hearth refractory.
According to the technical scheme, the blast furnace shell is conical, the outer diameter of the blast furnace shell is gradually reduced from bottom to top, the hearth refractory material is tightly attached to the furnace shell inside the furnace shell, and when the hearth refractory material is floated by the buoyancy of molten iron and has a floating trend, the furnace shell with the gradually reduced outer diameter from bottom to top can bind the hearth refractory material downwards, so that the potential safety hazard that the hearth refractory material is damaged is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a long-life blast furnace hearth system according to an embodiment of the present invention;
fig. 2 is a detailed structural schematic diagram of a long-life blast furnace bottom hearth system according to the embodiment of the invention.
Reference numerals:
11, 12: refractory material at the bottom of the furnace;
2: furnace bottom cooling equipment;
3: a plurality of furnace bottom thermocouples;
41, 42: refractory material of a hearth;
5: a furnace shell;
6: a hearth cooling apparatus;
7: a plurality of hearth thermocouples;
8: a furnace bottom monitoring sensor;
9: a hearth monitoring sensor;
10: and (5) regulating and controlling equipment.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Because the furnace shell corresponding to the current blast furnace hearth is in a cylindrical shape with the same diameter from bottom to top, when refractory materials of the hearth are subjected to the buoyancy of molten iron and have the tendency of floating upwards, the refractory materials of the hearth can be prevented from floating upwards only by the friction force between the furnace shell and the refractory materials of the hearth, and the refractory materials of the hearth are not additionally bound by the furnace shell, so that the refractory materials of the hearth are easily damaged.
In addition, with the recent progress of refractory technology, new refractory materials with high performance are continuously appearing, the protection of refractory materials on the bottom of a blast furnace is greatly improved, but the erosion of refractory materials in a hearth is aggravated due to the circulation of molten iron in the hearth during tapping. Therefore, the novel refractory material is fully utilized, and the long-life type furnace bottom and hearth system is researched, so that the method has great significance for prolonging the service life of the blast furnace and ensuring the long-term stable operation of the blast furnace.
Based on this, the embodiment of the utility model provides a long-life type blast furnace stove bottom hearth system, this long-life type blast furnace stove bottom hearth system includes: stove bottom and hearth, this system still includes: the conical stove outer diameter diminishes gradually from bottom to top, the resistant material of stove bottom and the resistant material of stove jar of setting in conical stove outer diameter to and stove bottom cooling device, stove bottom monitoring sensor, stove jar cooling device and stove jar monitoring sensor, wherein: the furnace bottom refractory is arranged on the furnace bottom; the furnace bottom cooling equipment is connected with the furnace bottom refractory material and is used for providing cooling water for the furnace bottom refractory material; the furnace bottom monitoring sensor is connected with the furnace bottom refractory material and used for monitoring the temperature of the furnace bottom refractory material and transmitting monitoring data to the outside; the hearth refractory is annularly arranged on the furnace bottom refractory; the hearth cooling equipment is connected with the hearth refractory material and used for providing cooling water for the hearth refractory material; and the hearth monitoring sensor is connected with the hearth refractory material and used for monitoring the temperature of the hearth refractory material and transmitting monitoring data to the outside.
The furnace shell is set to be conical, the outer diameter of the furnace shell is gradually reduced from bottom to top, the hearth refractory material is tightly attached to the furnace shell in the furnace shell, and when the hearth refractory material is floated by the buoyancy of molten iron and has a floating trend, the furnace shell with the gradually reduced outer diameter from bottom to top can bind the hearth refractory material downwards, so that the potential safety hazard that the hearth refractory material is damaged is reduced.
In one embodiment, a plurality of temperature measuring elements can be arranged at different positions of the refractory material of the furnace bottom and the refractory material of the furnace hearth in advance, the monitoring sensor of the furnace bottom can monitor the temperature measuring elements arranged in the refractory material of the furnace bottom to know the temperature of the refractory material of the furnace bottom, and the temperature measuring elements arranged in the refractory material of the furnace hearth can monitor the temperature of the refractory material of the furnace hearth.
In one example, the temperature measuring element can be a thermocouple.
In practical operation, the furnace bottom monitoring sensor can also be connected with furnace bottom cooling equipment and used for monitoring the cooling water quantity and the cooling water temperature of the furnace bottom cooling equipment. The hearth monitoring sensor can also be connected with the hearth cooling equipment and used for monitoring the cooling water quantity and the cooling water temperature of the hearth cooling equipment.
Preferably, the long-life blast furnace bottom hearth system further comprises: and the regulating and controlling equipment is respectively connected with the furnace bottom cooling equipment, the furnace bottom monitoring sensor, the hearth cooling equipment and the hearth monitoring sensor and is used for regulating the cooling water quantity of the furnace bottom cooling equipment according to the monitoring data of the furnace bottom monitoring sensor and regulating the cooling water quantity of the hearth cooling equipment according to the monitoring data of the hearth monitoring sensor.
The control equipment realizes the control of the cooling strength of the refractory materials at the furnace bottom and the refractory materials at the furnace hearth by adjusting and controlling the cooling water quantity of the cooling equipment 2 at the furnace bottom and the cooling equipment 6 at the furnace hearth, ensures that the cooling equipment at the furnace bottom and the cooling equipment at the furnace hearth maintain balanced cooling strength, and ensures the long-term stable operation of the furnace bottom and the furnace hearth.
In the embodiment of the utility model, the blast furnace bottom and hearth are made of high-performance novel refractory materials, such as carbon composite bricks. The carbon composite brick has good molten iron penetration resistance, erosion resistance and scouring resistance, the thermal expansion coefficient (volume expansion rate of 2.92%) is far lower than that of the traditional common ceramic cup material, and the phenomena of upwarp of a tuyere and cracking of a furnace shell caused by excessive thermal expansion deformation of a refractory material can be avoided.
The design of a complete heat conduction type blast furnace bottom hearth system is carried out by introducing heat transfer, the heat conductivity coefficients of the carbon composite bricks at 300 ℃, 600 ℃ and 800 ℃ are respectively 16.21, 14.27 and 13.78, the carbon composite bricks are in a trend of reducing from a blast furnace cold surface to a hot surface, the design principle of the furnace bottom hearth is met, a slag iron protective layer is favorably and quickly formed on a refractory hot surface in the production process of a blast furnace, the direct contact between molten iron and a refractory material of the furnace bottom and a refractory material of the hearth is effectively isolated, and a long-acting mechanism for protecting the furnace bottom and the hearth is formed.
In actual operation, the hearth refractory has a predetermined thickness, for example, the thickness of the hearth refractory can be appropriately reduced, and the thickness of the hearth refractory can be appropriately reduced by about 100mm compared with the conventional hearth refractory, so that the reduced hearth refractory can increase the height of a dead iron layer during production of the blast furnace, promote a dead iron column to be in a floating state in a hearth, enable molten iron to flow from the bottom of the dead iron column to a taphole during tapping, reduce the circulating flow of the molten iron in the hearth during tapping, reduce the erosion of the molten iron on the hearth refractory, and prolong the service life of the hearth.
Preferably, the refractory material at the bottom of the blast furnace is designed into a full-spread structure, and compared with an interlayer between a ceramic pad and a carbon brick in the traditional structure, the refractory material at the bottom of the blast furnace can eliminate a risk factor of floating at the bottom of the blast furnace in production.
Fig. 1 is a schematic structural diagram of a long-life blast furnace bottom hearth system according to an embodiment of the present invention, and as shown in fig. 1, the long-life blast furnace bottom hearth system includes: the blast furnace comprises completely heat-conductive hearth refractory materials 11 and 12 provided at the bottom of the blast furnace, a hearth cooling device 2 connected to the hearth refractory material, a plurality of hearth thermocouples 3 provided at different positions of the hearth refractory material, completely heat-conductive hearth refractory materials 41 and 42 provided on the hearth refractory material and constructed in a ring shape, a conical furnace shell 5, a hearth cooling device 6 connected to the hearth refractory material, and a plurality of hearth thermocouples 7 provided at different positions of the hearth refractory material.
In practical operation, in order to comply with the design rule of the hearth and the hearth, the refractory materials 11 and 12 may be refractory materials having different thermal conductivities, the thermal conductivity of the refractory material 11 may be greater than that of the refractory material 12, and correspondingly, the thermal conductivity of the refractory material 42 may be greater than that of the refractory material 41.
The system is provided with an inclined hearth structure, the outer diameter of the conical furnace shell 5 is gradually reduced from bottom to top, when refractory materials of the hearth are subjected to the buoyancy of molten iron and have the upward-floating trend, the furnace shell with the gradually reduced outer diameter from bottom to top can form downward constraint on the refractory materials of the hearth, and the potential safety hazard that the refractory materials of the hearth are damaged is reduced.
In this system, the heat conductivity of the refractory materials of the bottom and hearth of the blast furnace of the complete heat conduction type is designed to be decreased from the cold surface to the hot surface.
In actual operation, the thickness of the refractory material at the bottom of the furnace can be reduced, so that the height of a dead iron layer during the production of the blast furnace can be increased, and the dead material column is in a floating state in the hearth.
As shown in fig. 2, the system further includes: the furnace bottom monitoring sensor 8 and the hearth monitoring sensor 9 can determine the temperatures of the furnace bottom refractory and the hearth refractory by detecting the furnace bottom thermocouple 3 and the hearth thermocouple 7. And the furnace bottom monitoring sensor and the furnace hearth monitoring sensor can also detect the cooling water amount of the independent furnace bottom cooling equipment 2 and the independent furnace hearth cooling equipment 6 and the water temperature difference before and after cooling.
The regulating and controlling equipment 10 is respectively connected with the furnace bottom cooling equipment 2, the furnace bottom monitoring sensor 8, the furnace hearth cooling equipment 6 and the furnace hearth monitoring sensor 9, and regulates the cooling water quantity of the furnace bottom cooling equipment according to the monitoring data of the furnace bottom monitoring sensor and regulates the cooling water quantity of the furnace hearth cooling equipment according to the monitoring data of the furnace hearth monitoring sensor. The control of the cooling strength of the refractory materials of the furnace bottom and the refractory materials of the furnace hearth is realized by controlling the cooling water amount of the cooling equipment of the furnace bottom 2 and the cooling equipment of the furnace hearth 6 by the regulation and control equipment, so that the cooling strength of the refractory materials of the furnace bottom and the refractory materials of the furnace hearth reaches the actual working setting requirement, the balance cooling strength of the cooling equipment of the furnace bottom and the furnace hearth is ensured, and the long-term stable operation of the furnace bottom and the furnace hearth is ensured.
The system adopts an inclined hearth structure, the furnace shell is conical, the included angle between the furnace shell and the horizontal plane can be about 80 degrees, and for example, the included angle between the furnace shell and the horizontal plane can be 83 degrees. The refractory material of the hearth is tightly attached to the furnace shell in the furnace shell, and when the refractory material of the hearth is floated by the buoyancy of molten iron and tends to float upwards, the furnace shell with the gradually reduced outer diameter from bottom to top can bind the refractory material of the hearth downwards, so that the potential safety hazard that the refractory material of the hearth is damaged is reduced.
To sum up, the embodiment of the utility model provides a long-life type blast furnace stove bottom hearth system has following advantage:
(1) the complete heat conduction type blast furnace bottom hearth system provided by the embodiment of the utility model has good heat conduction performance and low thermal expansion coefficient, and can avoid the phenomena of upwarp of the tuyere and cracking of the furnace shell;
(2) the complete heat conduction type blast furnace bottom hearth system provided by the embodiment of the utility model can quickly form a stable iron slag protective layer, thereby being beneficial to realizing the long service life of the blast furnace;
(3) the inclined hearth structure provided by the embodiment of the utility model can prevent the refractory material of the hearth from floating upwards under the buoyancy of molten iron;
(4) the utility model discloses stove bottom resistant material and hearth resistant material are provided with independent cooling device and independent monitoring sensor respectively, and regulation and control equipment can realize the control to stove bottom resistant material and hearth resistant material cooling strength respectively through control cooling water yield, and long-term operation to blast furnace safety and stability has great meaning.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
The systems, devices, modules or units illustrated in the above embodiments may be implemented by a computer chip or an entity, or by a product with certain functions. One typical implementation device is a computer. In particular, the computer may be, for example, a personal computer, a laptop computer, a vehicle-mounted human-computer interaction device, a cellular telephone, a camera phone, a smart phone, a personal digital assistant, a media player, a navigation device, an email device, a game console, a tablet computer, a wearable device, or a combination of any of these devices.
The terms "comprises," "comprising," or any other variation thereof, in the embodiments of this specification are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the presence of additional identical or equivalent elements in a process, method, article, or apparatus that comprises the recited elements is not excluded.
For convenience of description, the above devices are described as being divided into various modules by functions, and are described separately. Of course, in implementing the embodiments of the present description, the functions of each module may be implemented in one or more software and/or hardware, or a module implementing the same function may be implemented by a combination of multiple sub-modules or sub-units, and the like. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
As will be appreciated by one skilled in the art, embodiments of the present description may be provided as a system or computer program product. Accordingly, embodiments of the present description may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the specification. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.
Claims (10)
1. A long-life blast furnace bottom hearth system, comprising: hearth, stove bottom, its characterized in that, long-life type blast furnace stove bottom hearth system still includes: conical stove outer diameter from bottom to top diminishes, sets up the resistant material of stove bottom and the resistant material of stove jar in the conical stove outer diameter to and stove bottom cooling device, stove bottom monitoring sensor, stove jar cooling device and stove jar monitoring sensor, wherein:
the furnace bottom refractory is arranged on the furnace bottom;
the furnace bottom cooling equipment is connected with the furnace bottom refractory material and is used for providing cooling water for the furnace bottom refractory material;
the furnace bottom monitoring sensor is connected with the furnace bottom refractory material and is used for monitoring the temperature of the furnace bottom refractory material;
the hearth refractory is annularly arranged on the furnace bottom refractory;
the hearth cooling equipment is connected with the hearth refractory material and used for providing cooling water for the hearth refractory material;
the hearth monitoring sensor is connected with the hearth refractory and used for monitoring the temperature of the hearth refractory.
2. The long-life blast furnace hearth system according to claim 1, wherein said hearth monitoring sensor is connected to said hearth cooling device for monitoring the amount of cooling water and the temperature of cooling water of said hearth cooling device.
3. The long-life blast furnace bottom and hearth system according to claim 1, wherein said hearth monitoring sensor is connected to said hearth cooling device for monitoring the amount of cooling water and the temperature of cooling water of said hearth cooling device.
4. The long life blast furnace hearth system of claim 1, further comprising:
and the regulation and control equipment is respectively connected with the furnace bottom cooling equipment, the furnace bottom monitoring sensor, the furnace hearth cooling equipment and the furnace hearth monitoring sensor and is used for regulating the cooling water quantity of the furnace bottom cooling equipment according to the monitoring data of the furnace bottom monitoring sensor and regulating the cooling water quantity of the furnace hearth cooling equipment according to the monitoring data of the furnace hearth monitoring sensor.
5. The long-life blast furnace hearth system according to claim 1, wherein said hearth refractory is of a full-spread structure.
6. The long-life blast furnace hearth system according to claim 1, wherein said refractory is of a predetermined thickness so that molten iron flows from the bottom of the dead material column to the tap hole during tapping.
7. The long-life blast furnace hearth system according to claim 1, wherein said hearth refractory and said hearth refractory are refractories, and a thermal conductivity of said refractories decreases from a cold surface to a hot surface of the blast furnace.
8. The long life blast furnace hearth system of claim 1, further comprising:
and a plurality of temperature measuring elements provided at different positions of the hearth refractory and the hearth refractory.
9. The long life blast furnace hearth system of claim 8, wherein said temperature sensing element is a thermocouple.
10. The long-life blast furnace bottom hearth system according to claim 8, wherein said hearth monitoring sensor monitors a temperature measuring element provided in said hearth refractory to know the temperature of said hearth refractory, and said hearth monitoring sensor monitors a temperature measuring element provided in said hearth refractory to know the temperature of said hearth refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921910135.6U CN211367612U (en) | 2019-11-07 | 2019-11-07 | Long-life blast furnace bottom hearth system |
Applications Claiming Priority (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045372A (en) * | 2021-10-27 | 2022-02-15 | 无锡市辉丰机电设备有限公司 | Furnace bottom water cooling method |
| CN115791861A (en) * | 2022-12-07 | 2023-03-14 | 包头钢铁（集团）有限责任公司 | Method for analyzing damage reasons of refractory of blast furnace hearth |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114045372A (en) * | 2021-10-27 | 2022-02-15 | 无锡市辉丰机电设备有限公司 | Furnace bottom water cooling method |
| CN115791861A (en) * | 2022-12-07 | 2023-03-14 | 包头钢铁（集团）有限责任公司 | Method for analyzing damage reasons of refractory of blast furnace hearth |
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