Sintering ignition furnace burner capable of inhibiting nodulation and use method

Abstract

The invention discloses a sintering ignition furnace burner capable of inhibiting nodulation and a using method, and relates to the technical field of ignition procedures in sintering production.The sintering ignition furnace burner comprises a first main burner body, a first auxiliary burner body, a second main burner body and a second auxiliary burner body; an included angle is formed between the spraying direction of the first auxiliary burner and the spraying direction of the first main burner, and the first auxiliary burner faces the temperature measuring galvanic couple; an included angle is formed between the spraying direction of the second auxiliary burner and the spraying direction of the second main burner, and the second auxiliary burner faces the temperature measuring galvanic couple; wherein combustion of coal gas sprayed out of the first auxiliary burner and the second auxiliary burner interacts with flames and smoke generated by combustion of coal gas sprayed out of the first main burner and the second main burner, a protective mechanical field with certain pressure and flow velocity is formed in front of the temperature measuring galvanic couple, the structure is simple, and use is convenient; rebound materials are effectively prevented from entering areas near the temperature measuring galvanic couple.

Description

Technical Field

[0001] The present invention relates to the technical field of ignition processes in sintering production, and particularly to a burner for a sintering ignition furnace that inhibits nodulation and a method of using the same. Background Art

[0002] In the sintered ore production process, the ignition process plays a key role. As a key process parameter to be monitored, the ignition temperature is usually measured by a temperature measuring thermocouple installed on the ignition furnace for the flue gas temperature between the inner surface of the ignition furnace and the material laid on the trolley.

[0003] However, during actual production, after the particles on the surface of the material laid on the trolley enter the ignition furnace, they are easily rebounded under the influence of the high-velocity and high-temperature flame ejected by the ignition burner. These melted small particles will adhere and form nodules after rebounding to the inner surface of the ignition furnace. In particular, the nodulation problem near the temperature measuring thermocouple seriously affects the accuracy of the temperature measuring thermocouple, thereby interfering with the accurate measurement of the sintering ignition temperature and also increasing gas consumption.

[0004] Currently, for the nodular substances on both side edges of the ignition furnace, a mechanical cleaning device is generally used for cleaning. However, there is no effective cleaning method for the nodules distributed in the middle position of the ignition furnace, especially near the temperature measuring thermocouple. This not only affects production efficiency but also restricts the improvement of product quality, and an innovative solution is urgently needed to improve this situation. Summary of the Invention

[0005] The object of the present invention is to provide a burner for a sintering ignition furnace that inhibits nodulation and a method of using the same to solve the problems existing in the above-mentioned prior art, which has a simple structure, is convenient to use, and effectively prevents the rebounded material from entering the area near the temperature measuring thermocouple.

[0006] To achieve the above object, the present invention provides the following solution:

[0007] The present invention provides a sintering ignition furnace burner for suppressing nodulation, comprising: a first main burner, a first auxiliary burner, a second main burner and a second auxiliary burner. The first main burner is arranged on one side of a temperature measuring thermocouple, connected and communicated with a hot blast stove, and the spraying direction of the first main burner is perpendicular to the surface of the sintering material. The first auxiliary burner is arranged between the first main burner and the temperature measuring thermocouple, connected and communicated with the hot blast stove, and an included angle is arranged between the spraying direction of the first auxiliary burner and the spraying direction of the first main burner and is arranged towards the temperature measuring thermocouple. The second main burner is arranged on the other side of the temperature measuring thermocouple, connected and communicated with the hot blast stove, and the spraying direction of the second main burner is perpendicular to the surface of the sintering material. The second auxiliary burner is arranged between the second main burner and the temperature measuring thermocouple, connected and communicated with the hot blast stove, and an included angle is arranged between the spraying direction of the second auxiliary burner and the spraying direction of the second main burner and is arranged towards the temperature measuring thermocouple. Wherein, the combustion of the gas sprayed by the first auxiliary burner and the second auxiliary burner interacts with the flames and flue gases generated by the combustion of the gas sprayed by the first main burner and the second main burner to form a protective mechanical field with a certain pressure and flow rate in front of the temperature measuring thermocouple.

[0008] Preferably, the diameter of the first auxiliary burner is 1 / 10 - 1 / 5 of that of the first main burner.

[0009] Preferably, the diameter of the second auxiliary burner is 1 / 10 - 1 / 5 of that of the second main burner.

[0010] Preferably, the extension line of the spraying direction of the first auxiliary burner crosses the vertical projection of the temperature measuring thermocouple on the sintering material surface.

[0011] Preferably, the distance between the intersection point of the extension line of the spraying direction of the first auxiliary burner and the surface of the sintering material and the vertical projection point of the temperature measuring thermocouple on the sintering material surface is not greater than 1 / 10 of the distance between the vertical projections of the first main burner and the temperature measuring thermocouple on the sintering material surface.

[0012] Preferably, the extension line of the spraying direction of the second auxiliary burner crosses the vertical projection of the temperature measuring thermocouple on the sintering material surface.

[0013] Preferably, the distance between the intersection point of the extension line of the spraying direction of the second auxiliary burner and the surface of the sintering material and the vertical projection point of the temperature measuring thermocouple on the sintering material surface is not greater than 1 / 10 of the distance between the vertical projections of the second main burner and the temperature measuring thermocouple on the sintering material surface.

[0014] Preferably, the first main burner, the first auxiliary burner, the second main burner, the second auxiliary burner and the temperature measuring thermocouple are located in the same plane.

[0015] Preferably, the first main burner and the second main burner are symmetrically arranged with respect to the temperature measuring thermocouple, and the first auxiliary burner and the second auxiliary burner are symmetrically arranged with respect to the temperature measuring thermocouple.

[0016] The present invention also provides a method for using the burner of the sintering ignition furnace for suppressing nodulation as described in any one of the above, comprising the following steps:

[0017] Let the gas of the hot blast stove enter the first main burner, the first auxiliary burner, the second main burner and the second auxiliary burner. After the gas supply is stable, use the ignition device to ignite the burner;

[0018] After successful ignition, make the gas burned by the first auxiliary burner and the second auxiliary burner cooperate with the flames and flue gases generated by the gas burned by the first main burner and the second main burner to form a stable and effective protective mechanical field in front of the temperature measuring thermocouple.

[0019] The present invention has achieved the following technical effects compared with the prior art:

[0020] The present invention provides a burner for a sintering ignition furnace for suppressing nodulation. The flames and flue gases generated by the four burners interact with each other to form such a protective mechanical field, which can form an effective barrier in front of the temperature measuring thermocouple. By virtue of the pressure and flow rate generated by this mechanical field, the rebounding materials can be effectively blocked outside the area around the temperature measuring thermocouple, greatly reducing the possibility of nodulation of the rebounding materials near the temperature measuring thermocouple, ensuring the normal working environment and measurement accuracy of the temperature measuring thermocouple, and further improving the temperature control accuracy and stability of the entire sintering process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the burner for a sintering ignition furnace for suppressing nodulation provided by the present invention;

[0023] In the figure: 1. First main burner; 2. First auxiliary burner; 3. Second main burner; 4. Second auxiliary burner; 5. Hot blast stove; 6. Temperature measuring thermocouple; 7. Sintering material; 8. Material surface. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0025] The object of the present invention is to provide a sintering ignition furnace burner for suppressing nodulation and its use method to solve the problems existing in the above-mentioned prior art. It has a simple structure, is easy to use, and effectively prevents the rebound material from entering the area near the temperature measuring thermocouple.

[0026] To make the above objects, features, and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] Embodiment 1

[0028] This embodiment provides a sintering ignition furnace burner for suppressing nodulation, as Figure 1 shown, including: a first main burner 1, a first auxiliary burner 2, a second main burner 3, and a second auxiliary burner 4. The first main burner 1 is arranged on one side of the temperature measuring thermocouple 6 and is connected and communicated with the hot blast stove 5, and the spraying direction of the first main burner 1 is perpendicular to the surface 8 of the sintering material 7; the first auxiliary burner 2 is arranged between the first main burner 1 and the temperature measuring thermocouple 6 and is connected and communicated with the hot blast stove 5, and an included angle is provided between the spraying direction of the first auxiliary burner 2 and the spraying direction of the first main burner 1 and is arranged towards the temperature measuring thermocouple 6; the second main burner 3 is arranged on the other side of the temperature measuring thermocouple 6 and is connected and communicated with the hot blast stove 5, and the spraying direction of the second main burner 3 is perpendicular to the surface 8 of the sintering material 7; the second auxiliary burner 4 is arranged between the second main burner 3 and the temperature measuring thermocouple 6 and is connected and communicated with the hot blast stove 5, and an included angle is provided between the spraying direction of the second auxiliary burner 4 and the spraying direction of the second main burner 3 and is arranged towards the temperature measuring thermocouple 6; wherein, the combustion of the gas sprayed by the first auxiliary burner 2 and the second auxiliary burner 4 interacts with the flames and flue gases generated by the combustion of the gas sprayed by the first main burner 1 and the second main burner 3 to form a protective mechanical field with a certain pressure and flow rate in front of the temperature measuring thermocouple 6. The flames and flue gases generated by the four burners interact with each other to form such a protective mechanical field, which can form an effective barrier in front of the temperature measuring thermocouple 6. With the pressure and flow rate generated by this mechanical field, the rebound material can be effectively blocked outside the surrounding area of the temperature measuring thermocouple 6, greatly reducing the possibility of nodulation of the rebound material near the temperature measuring thermocouple 6, ensuring the normal working environment and measurement accuracy of the temperature measuring thermocouple 6, and thus further improving the temperature control accuracy and stability of the entire sintering process.

[0029] In a preferred embodiment, the diameter of the first auxiliary burner 2 is 1 / 10 - 1 / 5 of that of the first main burner 1. Such a diameter ratio setting can ensure that the amount of gas ejected by the first auxiliary burner 2 and the airflow and flame intensity generated by combustion match those of the first main burner 1 and meet the requirements of the entire protection system. The appropriate ratio can not only ensure that the flame and airflow generated by the first auxiliary burner 2 can effectively cooperate with the flame and flue gas of the first main burner 1 to form a good protective mechanical field without affecting the main operation of the first main burner 1, but also adjust the intensity and range of the protection field according to the actual situation such as the distance between the material surface 8 and the inner surface of the ignition furnace, so as to meet the requirements of protecting the temperature measuring thermocouple 6 in the best state.

[0030] In a preferred embodiment, the diameter of the second auxiliary burner 4 is 1 / 10 - 1 / 5 of that of the second main burner 3. The principle of the diameter ratio setting of the second auxiliary burner 4 and the second main burner 3 is the same as that of the first auxiliary burner 2 and the first main burner 1, making the cooperation between the second auxiliary burner 4 and the second main burner 3 more reasonable, and enabling precise control of the amount of gas ejected by the second auxiliary burner 4 and the formed airflow and flame conditions. The consistent ratio of the bilateral burners ensures the symmetry and coordination of the entire protection field in terms of structure and function, enhances the integrity and stability of the protective mechanical field formed around the temperature measuring thermocouple 6, and better prevents the rebound material from entering the area of the temperature measuring thermocouple 6 in both side directions.

[0031] In a preferred embodiment, the extension line of the ejection direction of the first auxiliary burner 2 crosses the vertical projection of the temperature measuring thermocouple 6 on the sintering material 7 surface. This setting ensures that the airflow and flame generated by the combustion of the first auxiliary burner 2 can completely cover the projection area of the temperature measuring thermocouple 6 on the sintering material 7 surface and the front thereof, forming a stable protection area in front of the temperature measuring thermocouple 6, reducing the impact risk of the rebound material coming from this direction on the temperature measuring thermocouple 6, and more comprehensively protecting the normal working environment and accuracy of the temperature measuring thermocouple 6.

[0032] In a preferred embodiment, the distance between the intersection point of the extension line of the ejection direction of the first auxiliary burner 2 and the material surface 8 of the sintering material 7 and the vertical projection point of the temperature measuring thermocouple 6 on the sintering material 7 surface is not greater than 1 / 10 of the distance between the first main burner 1 and the vertical projection of the temperature measuring thermocouple 6 on the sintering material 7 surface. The strict limitation of this distance precisely controls the position and range of the protection field formed by the first auxiliary burner 2. It enables the protection field to effectively protect the key area in front of the temperature measuring thermocouple 6, and at the same time avoids the protection being not concentrated or resource waste caused by excessive deviation, ensuring that the airflow ejected by the first auxiliary burner 2 effectively blocks the rebound material at the most suitable position and distance, and optimizing the protection effect.

[0033] In a preferred embodiment, the extension line of the ejection direction of the second auxiliary burner 4 crosses the vertical projection of the temperature measuring thermocouple 6 on the sintering material 7 surface. Similar to the first auxiliary burner 2, this enables the airflow and flame generated by the second auxiliary burner 4 to cover the projection area of the temperature measuring thermocouple 6 on the sintering material 7 surface, forming a protection from the other side for the temperature measuring thermocouple 6, strengthening the integrity of the overall protection barrier around the temperature measuring thermocouple 6, ensuring that rebounding materials from any direction can be effectively blocked, and comprehensively improving the protection ability for the temperature measuring thermocouple 6.

[0034] In a preferred embodiment, the distance between the intersection point of the extension line of the ejection direction of the second auxiliary burner 4 and the surface 8 of the sintering material 7 and the vertical projection point of the temperature measuring thermocouple 6 on the sintering material 7 surface is not greater than 1 / 10 of the spacing between the second main burner 3 and the vertical projection of the temperature measuring thermocouple 6 on the sintering material 7 surface. This distance limitation ensures that the protection field formed by the second auxiliary burner 4 matches the protection field formed by the first auxiliary burner 2, accurately meeting the protection requirements on both sides and efficiently concentrating on the key area in front of the temperature measuring thermocouple 6. It further improves the balance and stability of the overall protection field, better plays the role of blocking rebounding materials, and ensures a relatively pure and interference-free working environment around the temperature measuring thermocouple 6.

[0035] In a preferred embodiment, the first main burner 1, the first auxiliary burner 2, the second main burner 3, the second auxiliary burner 4, and the temperature measuring thermocouple 6 are located in the same plane. All these key components being in the same plane ensures the compactness of the spatial layout between the entire burner system and the temperature measuring thermocouple 6 and the high efficiency of collaborative work. It enables the flames and flue gases ejected by each burner to achieve optimal interaction and mixing in the same plane, making it easier to form a uniform and stable protective mechanical field around the temperature measuring thermocouple 6 on the same plane, facilitating the full play of the protective role expected by the burner layout, and bringing convenience to the design optimization and actual operation and maintenance of the overall system.

[0036] In a preferred embodiment, the first main burner 1 and the second main burner 3 are symmetrically arranged with respect to the temperature measuring thermocouple 6, and the first auxiliary burner 2 and the second auxiliary burner 4 are symmetrically arranged with respect to the temperature measuring thermocouple 6. This symmetrical arrangement further optimizes the distribution of the heat flow field and airflow field around the temperature measuring thermocouple 6, making the flames and flue gases ejected by the burners on both sides more balanced in terms of temperature distribution, pressure distribution, and flow velocity distribution, thus forming a more symmetrical, stable, and uniform protective mechanical field. It can not only maximize the ability to block rebounding materials from different directions but also avoid the problem of uneven protection caused by one side being too strong or too weak, comprehensively improving the protection level for the temperature measuring thermocouple 6 and ensuring stable and accurate temperature measurement and control during the sintering process.

[0037] Embodiment 2

[0038] This embodiment also provides a method for using the sintering ignition furnace burner for suppressing nodulation according to any one of the above, including the following steps:

[0039] Preparation stage

[0040] Connect the gas supply system: According to the layout and connection method of the hot blast stove 5 and the external gas transmission pipeline network, accurately connect the first main burner 1, the first auxiliary burner 2, the second main burner 3 and the second auxiliary burner 4 to the gas supply pipeline according to the design requirements. Ensure that the connection parts are well sealed, select appropriate sealing materials such as high-temperature resistant rubber sealing rings to prevent gas leakage. Conduct a pressure test, use professional pressure detection equipment to detect whether the pipeline connection parts can withstand the normal working pressure, and ensure that there is no leakage problem. For example, after connecting the pipeline, use an airtight detection instrument to fill a certain pressure of nitrogen and observe whether the pressure drops after maintaining for a certain time. If the pressure does not drop, it means that the sealing is good.

[0041] Install and debug the temperature measuring thermocouple 6: Install the temperature measuring thermocouple 6 accurately at the middle position between two rows of burners according to the design requirements. Ensure its position accuracy by using special installation tools and positioning devices. After installation, calibrate and debug the temperature measuring thermocouple 6. Calibrate the temperature measuring thermocouple 6 with a standard temperature source to make the error between the measured temperature and the standard temperature within the specified range. For example, use a known fixed melting point tin block with a melting point of 231.9 °C, measure it with this temperature measuring device and compare the error. If the error exceeds the given allowable range, adjust or replace it.

[0042] Inspection of the hot blast stove 5 and the burners: Conduct a comprehensive inspection of the hot blast stove 5, check whether its furnace body structure is complete, whether there are cracks, perforations, etc., and at the same time check whether the refractory materials in the hot blast stove 5 are intact, whether there are phenomena such as falling off and damage. Inspect each burner, including checking whether the installation of the burner is firm and whether there are any loosening at the connection parts; check whether the inside of the burner is clean and whether there is any foreign matter blocking to ensure that the gas can be ejected smoothly.

[0043] Working stage

[0044] Start the gas supply system: According to the requirements of the sintering process, first slowly open the valve on the gas supply pipeline to gradually introduce gas into the first main burner 1, the first auxiliary burner 2, the second main burner 3 and the second auxiliary burner 4. During the gas transmission process, closely observe the changes in gas pressure and flow rate, and use the pressure sensors and flow meters installed on the pipeline for real-time monitoring to ensure that they meet the pre-set working parameter range.

[0045] Ignition operation: After the gas supply is stable, use the ignition device to ignite the burner. Adopt mature electrical ignition, flame ignition or high-temperature object ignition methods to ensure successful ignition at the first attempt. During the ignition process, the operator should take safety protection measures, stand outside the safe distance to observe the ignition situation. If the ignition fails, the gas valve should be closed in time, and after troubleshooting, re-ignite. For example, during electrical ignition, ensure that the ignition electrode is in the correct position and the ignition energy is sufficient.

[0046] Adjust burner parameters: After successful ignition, according to the temperature distribution on the surface of the sintered material 7 and the requirements of the sintering process, finely adjust parameters such as the ejection volume and ejection angle of the burner. By adjusting the flow regulating valve on the gas supply pipeline, accurately control the gas ejection volume of each burner, and then adjust the intensity and temperature of the flame. For the first auxiliary burner 2 and the second auxiliary burner 4, the ejection direction can be finely adjusted through a special angle adjustment device to ensure that the combustion of the gas ejected by them can cooperate with the flames and flue gases generated by the combustion of the gas ejected by the first main burner 1 and the second main burner 3, and form a stable and effective protective mechanical field in front of the temperature measuring thermocouple 6. For example, for sintered materials with special thickness, appropriately increase the gas supply volume of the main burner according to the actual situation to ensure sufficient preheating and sintering of the materials.

[0047] Monitoring and feedback adjustment: During the entire sintering process, the temperature measuring thermocouple 6 measures the flue gas temperature between the inner surface of the ignition furnace and the materials laid on the trolley in real time. Transmit the measured temperature data to the control system and display it in real time through the display instrument. The operator makes feedback adjustments according to the temperature data and the requirements of the sintering process. If the temperature is too high or too low, the control system automatically adjusts the gas ejection volume of the burner according to the preset logic, or manually intervenes for adjustment. At the same time, also pay attention to the state of the protection field. If it is found that the protection field has a poor blocking effect on the rebounding materials, the parameters of the auxiliary burner can be finely adjusted to optimize the state of the protection field. For example, if the temperature measuring thermocouple 6 measures a temperature higher than the set value, the control system automatically reduces the gas supply flow of the burner to keep the sintering process stable within a suitable temperature range.

[0048] End stage

[0049] Stop gas supply: When the sintering process is over, first close the valve on the gas supply pipeline and gradually cut off the gas supply to each burner. When closing the valve, operate in accordance with the specified sequence and speed to avoid damaging the equipment due to excessive instantaneous pressure changes.

[0050] Cooling down and equipment maintenance: After the burner stops working, the hot blast stove 5 needs to cool down naturally or by using a suitable cooling method. During the cooling process, check and maintain the entire device, and observe whether components such as each burner and the temperature measuring thermocouple 6 are damaged, and whether there are any loosening or deformation in the connection parts. Clean the impurities and dust inside and outside the burner in time to ensure that the equipment is in good condition and ready for the next use. For example, after natural cooling is completed after a batch of sintering, use tools to clean the inside of the burner and check whether there is any damage to the main structure of each burner. If there is damage, replace or repair it in time.

[0051] In the present invention, specific examples are used to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A sintering ignition furnace burner for suppressing nodulation, characterized in that: Including: A first main burner, which is arranged on one side of the temperature measuring thermocouple, connected and communicated with the hot blast stove, and the spraying direction of the first main burner is perpendicular to the surface of the sintering material; A first auxiliary burner, which is arranged between the first main burner and the temperature measuring thermocouple, connected and communicated with the hot blast stove, and an included angle is set between the spraying direction of the first auxiliary burner and the spraying direction of the first main burner and is arranged towards the temperature measuring thermocouple; A second main burner, which is arranged on the other side of the temperature measuring thermocouple, connected and communicated with the hot blast stove, and the spraying direction of the second main burner is perpendicular to the surface of the sintering material; A second auxiliary burner, which is arranged between the second main burner and the temperature measuring thermocouple, connected and communicated with the hot blast stove, and an included angle is set between the spraying direction of the second auxiliary burner and the spraying direction of the second main burner and is arranged towards the temperature measuring thermocouple; Wherein, the combustion of the gas sprayed by the first auxiliary burner and the second auxiliary burner interacts with the flames and flue gases generated by the combustion of the gas sprayed by the first main burner and the second main burner to form a protective mechanical field with a certain pressure and flow rate in front of the temperature measuring thermocouple.

2. The sintering ignition furnace burner for suppressing nodulation according to claim 1, characterized in that: The diameter of the first auxiliary burner is 1 / 10 - 1 / 5 of that of the first main burner.

3. The sintering ignition furnace burner for suppressing nodulation according to claim 2, characterized in that: The diameter of the second auxiliary burner is 1 / 10 - 1 / 5 of that of the second main burner.

4. The sintering ignition furnace burner for suppressing nodulation according to claim 3, characterized in that: The extension line of the spraying direction of the first auxiliary burner crosses the vertical projection of the temperature measuring thermocouple on the sintering material surface.

5. The sintering ignition furnace burner for suppressing nodulation according to claim 4, characterized in that: The distance between the intersection point of the extension line of the spraying direction of the first auxiliary burner and the surface of the sintering material and the vertical projection point of the temperature measuring thermocouple on the sintering material surface is not greater than 1 / 10 of the distance between the vertical projections of the first main burner and the temperature measuring thermocouple on the sintering material surface.

6. The sintering ignition furnace burner for suppressing nodulation according to claim 5, characterized in that: The extension line of the spraying direction of the second auxiliary burner crosses the vertical projection of the temperature measuring thermocouple on the sintering material surface.

7. The sintering ignition furnace burner for suppressing nodulation according to claim 6, characterized in that: The distance between the intersection point of the extension line of the spraying direction of the second auxiliary burner and the surface of the sintering material and the vertical projection point of the temperature measuring thermocouple on the sintering material surface is not greater than 1 / 10 of the distance between the vertical projections of the second main burner and the temperature measuring thermocouple on the sintering material surface.

8. The sintering ignition furnace burner for suppressing nodulation according to claim 1, characterized in that: The first main burner, the first auxiliary burner, the second main burner, the second auxiliary burner and the temperature measuring thermocouple are located in the same plane.

9. The sintering ignition furnace burner for suppressing nodulation according to claim 8, characterized in that: The first main burner and the second main burner are symmetrically arranged with respect to the temperature measuring thermocouple, and the first auxiliary burner and the second auxiliary burner are symmetrically arranged with respect to the temperature measuring thermocouple.

10. A method for using a sintering ignition furnace burner for suppressing nodulation as described in any one of claims 1 to 9, characterized in that: Including the following steps: Let the gas of the hot blast stove enter the first main burner, the first auxiliary burner, the second main burner and the second auxiliary burner. After the gas supply is stable, use the ignition device to ignite the burners; After successful ignition, enable the combustion of the gas sprayed by the first auxiliary burner and the second auxiliary burner to cooperate with the flames and flue gases generated by the combustion of the gas sprayed by the first main burner and the second main burner to form a stable and effective protective mechanical field in front of the temperature measuring thermocouple.

Images