Sintering cup experimental apparatus

Abstract

The application provides a sintering cup experimental device, which comprises a sintering cup, an ignition assembly arranged above the sintering cup and a medium gas tank communicated with the ignition assembly, the ignition assembly comprises an ignition cover communicated with the medium gas tank, an igniter arranged in the ignition cover and a flame guide element arranged in the ignition cover, and the flame guide element comprises a communication area arranged outside the igniter and a flame guide area facing the sintering cup. The sintering cup experimental device provided by the application is provided with the flame guide element in the interior of the ignition cover, the igniter ignites in the communication area of the flame guide element, the flame can be enlarged through the flame guide area, the flame with high temperature in the central part of the whole ignition cover can be uniformly distributed in the interior of the ignition cover through the enlargement of the flame guide area, and the phenomenon that the temperature of the ignition cover is unevenly distributed in the whole plane can be effectively avoided. The temperature is high, the edge effect of sintering can be avoided, and the experimental result is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metallurgical sintering engineering, and particularly relates to a sintering cup experimental device. BACKGROUND

[0002] The sintering cup experimental device is one of the commonly used equipment in steel enterprises for exploring sintering process parameters, improving sintering process flow and detecting sinter properties. The sintering cup experiment is that fuel and iron ore powder to be sintered are mixed in a certain proportion, uniformly distributed in the sintering cup, and then the igniter is moved to the upper part of the sintering cup for ignition. At the same time, air is drawn from the lower part of the sintering cup. The air pressure at the bottom of the sintering cup is adjusted according to the test requirements. The mixed material after ignition is sintered from top to bottom. After the sintering process is completed, the sinter is screened and detected to obtain the sintering technical index.

[0003] At present, the sintering cup in the sintering cup experiment mostly adopts a liquefied gas ignition device, that is, a hose is connected between a liquefied gas tank and an ignition cover. After the ignition command is issued, the electronic ignition device in the ignition cover ignites the liquefied gas delivered from the liquefied gas tank. However, the concentration of the liquefied gas is relatively high in the middle part of the ignition cover, and the liquefied gas outside the periphery of the ignition cover is less, which leads to uneven temperature distribution of the ignition cover on the whole plane. When the flame temperature at the middle part of the ignition cover reaches 1050 DEG C required for ignition, the temperature at the periphery of the ignition cover is only 800 to 900 DEG C, which enhances the edge effect of sintering and is not conducive to sintering test operation. SUMMARY

[0004] The present application aims to provide a sintering cup experimental device to solve the technical problems that the ignition device in the prior art has safety hazards and uneven internal temperature, which enhances the edge effect of sintering.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide a sintering cup experimental device, which comprises a sintering cup, an ignition assembly arranged above the sintering cup and a medium gas tank in communication with the ignition assembly, the ignition assembly comprising an ignition cover in communication with the medium gas tank; an igniter arranged in the ignition cover; and a flame guide element arranged in the ignition cover, the flame guide element comprising a communication area covered outside the igniter and a flame guide area facing the sintering cup, the cross-sectional area of the flame guide area being greater than that of the communication area.

[0006] Further, one side of the ignition assembly is further provided with a transmission device for driving the ignition assembly to lift and rotate, and the ignition assembly can rotate around the transmission device.

[0007] Further, the bottom of the ignition cover is further provided with a sealing baffle, which can be attached to the sintering cup under the driving of the transmission device.

[0008] Further, the inner side of the flame guide element is provided with a first temperature sensor.

[0009] Further, a plurality of observation areas are arranged on the sidewall of the sintering cup along the height direction of the sintering cup.

[0010] Further, the medium gas tank and the igniter are connected through a first connecting pipe, and the first connecting pipe is provided with a first flow sensor, a first pressure sensor and a second temperature sensor.

[0011] Further, a cooling gas tank is further included, and the cooling gas tank and the igniter are connected through a second connecting pipe, and the second connecting pipe is further provided with a second flow sensor, a second pressure sensor and a third temperature sensor.

[0012] Further, the bottom of the sintering cup is further provided with a vacuum chamber, the top of the sintering cup has a first opening opposite to the ignition cover, the bottom of the sintering cup has a second opening opposite to the vacuum chamber, and the top of the vacuum chamber has a third opening opposite to the second opening.

[0013] Further, the vacuum chamber is connected with an air extractor and a combustion-supporting fan.

[0014] Further, a control system is further included, and the control system is connected with the igniter and the transmission device respectively.

[0015] The sintering cup experimental device has the advantages that: compared with the prior art, the sintering cup experimental device adds a flame guide element in the interior of the ignition cover, the gas in the medium gas tank is transmitted to the interior of the ignition cover, the igniter ignites in the communication area of the flame guide element, the flame can be enlarged through the flame guide area, the high-temperature flame in the central part of the ignition cover can be uniformly distributed in the interior of the ignition cover through the enlargement of the flame guide area, the phenomenon of uneven temperature distribution of the ignition cover on the whole plane can be effectively avoided, and the flame in the central part of the ignition cover is directly used, so that the temperature is high, the edge effect of sintering can be avoided, and the experimental result is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1A structural schematic diagram of a sintering cup experimental device provided by an embodiment of the present application is shown in the figure.

[0018] Figure 2 A structural schematic diagram of a flame guide element used by a sintering cup experimental device provided by an embodiment of the present application is shown in the figure.

[0019] Legend of reference signs:

[0020] 1, sintering cup; 2, ignition assembly; 3, medium gas tank; 4, transmission device; 5, cooling gas tank; 6, vacuum chamber; 7, control system; 11, observation area; 12, first opening; 13, second opening; 21, ignition cover; 22, igniter; 23, flame guide element; 24, sealing baffle; 25, first temperature sensor; 231, communication area; 232, flame guide area; 31, first connecting pipe; 32, first flow sensor; 33, first pressure sensor; 34, second temperature sensor; 51, second connecting pipe; 52, second flow sensor; 53, second pressure sensor; 54, third temperature sensor; 61, third opening; 62, exhaust fan; 63, combustion-supporting fan. DETAILED DESCRIPTION

[0021] The technical solutions of the present application will be described clearly and completely below with reference to the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In addition, the technical features involved in the different embodiments of the application described below can be combined with each other as long as they do not conflict with each other.

[0025] Please refer to Figure 1 The sintering cup experimental device provided by the application will be described below. The sintering cup experimental device comprises a sintering cup 1, an ignition assembly 2 arranged above the sintering cup 1, a medium gas tank 3 in communication with the ignition assembly 2, a cooling gas tank 5 connected with the ignition assembly 2, a vacuum chamber 6 arranged at the bottom of the sintering cup 1, and a control system 7 for controlling the entire device. The sintering cup 1 can be used for sintering test, the ignition assembly 2 can be connected with the medium gas tank 3 to realize ignition and provide liquefied gas or other combustible gas, the cooling gas tank 5 can inject cooling gas or cooling liquid towards the ignition assembly 2 at any time under the control of the control system 7, so as to cool the ignition assembly 2 and avoid explosion caused by excessive temperature. The vacuum chamber 6 can extract sintering raw materials in the sintering cup 1 and accelerate sintering inside the sintering cup 1.

[0026] The medium gas tank 3 and the igniter 22 are connected through a first connecting pipe 31, and the first connecting pipe 31 is provided with a first flow sensor 32, a first pressure sensor 33 and a second temperature sensor 34. The first connecting pipe 31 is generally a hose made of high-temperature-resistant material and can resist high pressure and is not easy to age, for example, a material made of a special engineering technology or a polysulfone material. The first flow sensor 32 can be used to detect the flow of the medium gas output by the medium gas tank 3, the first pressure sensor 33 can be used to detect the gas pressure of the medium gas output by the medium gas tank 3, and the second temperature sensor 34 can be used to detect the temperature of the medium gas output by the medium gas tank 3, so as to conveniently control the flow, gas pressure and temperature of the medium gas and transmit the detected data to the control system 7 for unified control by the control system 7.

[0027] The control system 7 generally comprises a conventional processor and a battery in the prior art, the processor can receive the data detected by the sensors and process and analyze the data, and control the transmission device 4, the medium gas tank 3 and the cooling gas tank 5, and the battery can be connected with the sensors, the transmission device 4, the medium gas tank 3 and the cooling gas tank 5 respectively and supply power to them.

[0028] The cooling gas tank 5 is connected to the first section of the plasma igniter 22 through a second connecting pipe 51, and the surface of the second connecting pipe 51 is covered with a high-temperature-resistant and heat-insulating composite material, such as aluminum platinum fiber cloth, etc. The cooling gas tank 5 can be controlled by the control system 7 to send cooling gas into the ignition assembly 2 after the sintering is completed, and the medium gas tank 3 is closed, so that the temperature of the gas in the ignition assembly 2 can be reduced to room temperature, and the medium gas in the first connecting pipe 31 is prevented from continuously entering the ignition assembly 2, thereby avoiding the phenomenon of continuous jet flame.

[0029] The second flow sensor 52, the second pressure sensor 53 and the third temperature sensor 54 are arranged above or below the cooling gas tank 5, so as to monitor the flow, pressure and temperature of the cooling gas in the second connecting pipe 51 or the cooling gas tank 5, and the second flow sensor 52, the second pressure sensor 53 and the third temperature sensor 54 are connected to the control system 7 and feed back the detection results to the control system 7, so as to control the whole system by the control system 7.

[0030] Further, please refer to Figure 1 and Figure 2 , as a specific embodiment of the sintering cup experimental device provided by the present application, the ignition assembly 2 comprises an ignition cover 21 connected to the medium gas tank 3, an igniter 22 arranged in the ignition cover 21, and a flame guide element 23 arranged in the ignition cover 21, the flame guide element 23 comprises a communication area 231 covering the outer side of the igniter 22 and a flame guide area 232 facing the sintering cup 1, and the cross-sectional area of the flame guide area 232 is greater than that of the communication area 231.

[0031] The flame guide element 23 is arranged in the ignition cover 21, the gas in the medium gas tank 3 is transmitted to the ignition cover 21, and the igniter 22 ignites in the communication area 231 of the flame guide element 23, so that the flame can be enlarged through the flame guide area 232, and the high-temperature flame in the central part of the ignition cover 21 can be uniformly distributed in the ignition cover 21 under the enlargement of the flame guide area 232, thereby effectively avoiding the uneven temperature distribution of the ignition cover 21 on the whole plane, and directly using the flame in the middle part of the ignition cover 21, which not only has high temperature, but also avoids the edge effect of sintering, so that the experimental results are more accurate.

[0032] Preferably, the cross-sectional area of the flame guide area 232 is equal to that of the inside of the ignition cover 21, so that the flame passing through the flame guide can completely fill the inside of the ignition cover 21, and the temperature of the flame emitted in the ignition cover 21 is uniform.

[0033] The inside of the flame guide element 23 can be provided with a first temperature sensor 25 for detecting the temperature inside the flame guide element 23, so as to determine whether the ignition is successful, and monitor the temperature of the flame, when the flame temperature reaches the sintering temperature, the transmission device 4 drives the entire ignition assembly 2 to move to the upper side of the sintering cup 1 to perform sintering work. Among them. The data collected by the first temperature sensor 25 can be transmitted to the control system 7, so as to be uniformly adjusted and controlled by the control system 7.

[0034] Among them, the first temperature sensor 25, the second flow sensor 52, the second pressure sensor 53, the third temperature sensor 54, the second flow sensor 52, the second pressure sensor 53 and the third temperature sensor 54 are all temperature sensors, flow sensors and pressure sensors commonly used in the art, and are connected with the control system, so as to feed back the monitored real-time data to the control system for unified analysis and processing.

[0035] Preferably, the ignition cover 21 is the ignition cover 21 commonly used in the prior art, which has a through hole at the top for the first connecting pipe 31 of the medium gas tank 3 to pass through, and an opening at the bottom facing the sintering cup 1. The flame guide element 23 and the igniter 22 are arranged inside the ignition cover 21, wherein the igniter 22 is fixed to the top center or one side of the ignition cover 21, and the flame guide element 23 is a communication pipe with inconsistent upper and lower diameters. The flame guide element 23 has a communication area 231 and a flame guide area 232, wherein the communication area 231 is directly sleeved outside the igniter 22, and the flame guide area 232 is an inverted conical structure, which can disperse the flame and make the flame more uniform during sintering.

[0036] The ignition assembly 2 is also provided with a transmission device 4 for driving the ignition assembly 2 to ascend and descend and rotate, and the transmission device 4 can be connected with the control system 7, and the control system 7 can control the rotation of the ignition assembly 2 around the transmission device 4 and the ascending and descending of the ignition assembly 2, so that the ignition assembly 2 can be rotatably moved to one side of the sintering cup 1 and not directly opposite to the sintering cup 1, and can be movably moved towards the sintering cup 1, avoiding excessive leakage of liquefied gas to the outside, thereby avoiding safety hazards.

[0037] Among them, the transmission device 4 can adopt a device commonly used in the prior art to realize the rotation of the ignition assembly 2, for example, a motor shaft end directly provided with a rotating lifting shaft, and one side of the ignition cover 21 is directly or indirectly fixed to the rotating lifting shaft, which is not limited here.

[0038] In order to avoid liquefied gas leakage, the bottom outer edge of the ignition cover 21 is further provided with a sealing baffle 24, which is made of high-temperature-resistant flexible material, such as fireproof sealant or glass fiber material, etc. In operation, the ignition cover 21 can be moved towards the sintering cup 1 under the drive of the transmission device 4, and the sealing baffle 24 can be directly padded between the outer wall of the ignition cover 21 and the inner wall surface of the sintering cup 1; or the sealing baffle 24 can be located at the bottom of the ignition cover 21, so that the bottom end of the sealing baffle 24 can be in contact with the top surface of the sintering cup 1, thereby forming a closed structure between the ignition cover 21 and the sintering cup 1, avoiding the leakage of liquefied gas or other flammable gas.

[0039] Preferably, the height of the ignition cover 21 is generally between 30cm to 40cm, and the igniter 22 is generally a plasma igniter 22, which is embedded into the inside of the ignition cover 21 from the middle part of the ignition cover 21, and the depth of the igniter 22 inserted into the ignition cover 21 is not more than 15cm, and the ignition power of the igniter 22 is generally 45 to 60kw, which can adjust the outlet temperature at the bottom of the ignition cover 21 by changing the power of the igniter 22.

[0040] Further, please refer to Figure 1 , as a specific embodiment of the sintering cup experimental device provided by the present application, the top of the sintering cup 1 has a first opening 12 opposite to the ignition cover 21, and the flame can enter the inside of the sintering cup 1 through the first opening 12 for sintering by the sintering cup 1, and the bottom of the sintering cup 1 has a second opening 13 opposite to the vacuum chamber 6, and the second opening 13 can be used for the gas in the vacuum chamber 6 to pass through, thereby accelerating the combustion efficiency.

[0041] Among them, the sintering cup 1 is composed of three layers of structure, which are refractory bricks, heat preservation materials and thick stainless steel materials in turn, wherein the refractory bricks are located in the innermost layer of the sintering cup 1, and the thick stainless steel materials are located in the outermost layer of the sintering cup 1, and the height of the sintering cup 1 is about 100cm to meet the experimental requirements of super-thick material layer.

[0042] Preferably, a plurality of observation areas 11 are arranged on the side wall of the sintering cup 1 along the height direction of the sintering cup 1, the observation areas 11 are arranged at equal intervals on the sintering cup 1, and the sintering reaction at a specific depth can be observed through the observation areas 11, which is convenient for observation and control. The observation area 11 is a square opening arranged on the side wall of the sintering cup 1, and the size of the square opening is generally 3*3 cm. The square opening is filled with transparent quartz glass with equal area to ensure its high-temperature resistance. The observation areas 11 are located at the heights of 20 cm, 40 cm, 60 cm and 80 cm of the sintering cup 1, respectively. Of course, according to actual conditions and specific needs, in other embodiments of the present application, the shape of the observation area 11 can also be circular or other shapes, and the number of the observation area 11 can also be two or more than two, which is not limited here.

[0043] Further, please refer to Figure 1 As a specific embodiment of the sintering cup experimental device provided by the present application, the bottom of the sintering cup 1 is further provided with a vacuum chamber 6, the top of the vacuum chamber 6 has a third opening 61 opposite to the second opening 13, and one side of the vacuum chamber 6 is provided with an air extractor 62. The air extractor 62 can extract the gas after sintering of the sintering cup 1 during the sintering work, so that the inside of the sintering cup 1 is always filled with medium gas, which can accelerate the sintering experiment and ensure the sintering effect.

[0044] One side of the vacuum chamber 6 is also provided with a combustion-supporting fan 63, which can blow oxygen or other combustion-supporting gas towards the inside of the sintering cup 1, so as to accelerate the sintering work inside the sintering cup 1. The combustion-supporting fan 63 is located above the air extractor 62, and the blowing pressure of the combustion-supporting fan 63 is greater than the air extraction pressure of the air extractor 62, so as to avoid the air extractor 62 directly extracting the gas blown out by the combustion-supporting fan 63, and to ensure the normal work of the whole device.

[0045] The working principle and use steps of the sintering cup experimental device provided by the present application are as follows:

[0046] S1, before starting the ignition work, the ignition cover 21 is located at one side of the sintering cup 1 under the driving of the transmission device 4, that is, the first opening 12 and the ignition cover 21 are not opposite, the sintering raw materials are loaded into the sintering cup 1, the control system 7 is controlled, the automatic running program of the sintering cup 1 is started, the control system 7 controls the medium gas tank 3 to be opened, the medium source is transported to the igniter 22 through the first connecting pipe 31, the igniter 22 is ignited to ignite the medium source, the flame is uniformly distributed in the inside of the ignition cover 21 through the flame guide element 23, and the air extractor 62 is opened to extract other gas in the sintering cup 1;

[0047] S2, when the first temperature sensor 25 detects that the temperature inside the ignition cover 21 reaches the set value, the combustion fan 63 starts to work, at the same time, the ignition cover 21 is driven by the transmission device 4 to rotate towards the upper side of the sintering cup 1, and drives the ignition cover 21 to move downwards, so that the sealing baffle 24 can be in contact with the sintering cup 1, and the flame can enter the inside of the sintering cup 1 from the first opening 12, the burned waste gas can move towards the vacuum chamber 6, and the combustion-supporting gas blown by the combustion fan 63 can be blown into the inside of the sintering cup 1, to ensure the continuous combustion of the flame, and at the same time, during the sintering experiment, the sintering reaction process at a specific depth can be observed through the observation port, the vertical combustion speed at the specific depth can be calculated, and whether the sintering work has been completed can be observed;

[0048] S3, after observing through the observation port until the sintering experiment is completed, the control system 7 controls the transmission medium gas tank 3 to stop working, and the exhaust fan 62 and the combustion fan 63 are both stopped working; the transmission device 4 drives the ignition cover 21 to move to one side of the sintering cup 1 under the control of the control system 7, and the cooling gas tank 5 starts to work and sends cooling gas to the igniter 22, so that the temperature of the igniter 22 is reduced to room temperature within a certain period of time.

[0049] Through the sintering cup experiment device, the flame temperature distribution emitted by the ignition device is uniform and more flexible, and the sintering material within a depth of 5mm can be ignited at the same time within 120 seconds, and the edge effect can be reduced to a certain extent; at the same time, the experimental operation is safer, and the phenomenon of leakage and explosion of liquefied gas or other medium gas of the existing sintering cup experiment device is eliminated, the sintering reaction at a specific depth can be observed, and the experimental requirements of 1000mm ultra-thick material layer are met.

[0050] Obviously, the above embodiments are only examples for clearly illustrating, and not limiting the embodiments. For those skilled in the art, other different forms of changes or modifications can be made on the basis of the above description. Here, all the embodiments need not and cannot be exhausted. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A sintering cup experimental device, comprising a sintering cup (1), a ignition assembly (2) arranged above the sintering cup (1), and a medium gas tank (3) in communication with the ignition assembly (2), characterized in that: The ignition assembly (2) comprises An ignition cover (21) in communication with the medium gas tank (3); An igniter (22) arranged inside the ignition cover (21); and A flame guide element (23) arranged inside the ignition cover (21), the flame guide element (23) comprising a communication area (231) covering the outside of the igniter (22) and a flame guide area (232) facing the sintering cup (1), the cross-sectional area of the flame guide area (232) being greater than that of the communication area (231), and the cross-sectional area of the flame guide area (232) being equal to that of the inside of the ignition cover (21).

2. The sintering cup apparatus of claim 1, wherein: The ignition assembly (2) is further provided with a transmission device (4) for driving the lifting and rotation of the ignition assembly (2), and the ignition assembly (2) can rotate around the transmission device (4).

3. The sintering cup apparatus of claim 2, wherein: The bottom of the ignition cover (21) is further provided with a sealing baffle (24) which can be attached to the sintering cup (1) under the drive of the transmission device (4).

4. The sintering cup apparatus of claim 1, wherein: The inside of the flame guide element (23) is provided with a first temperature sensor (25).

5. The sintering cup apparatus of claim 1, wherein: The sidewall of the sintering cup (1) is provided with a plurality of observation areas (11) along the height direction of the sintering cup (1).

6. The sintering cup apparatus of claim 1, wherein: The medium gas tank (3) and the igniter (22) are connected by a first connecting pipe (31), and the first connecting pipe (31) is provided with a first flow sensor (32), a first pressure sensor (33) and a second temperature sensor (34).

7. The sintering cup experimental apparatus of any one of claims 1 to 6, wherein: Further comprising a cooling gas tank (5), the cooling gas tank (5) and the igniter (22) are connected by a second connecting pipe (51), and the second connecting pipe (51) is further provided with a second flow sensor (52), a second pressure sensor (53) and a third temperature sensor (54).

8. The sintering cup apparatus of claim 7, wherein: The bottom of the sintering cup (1) is further provided with a vacuum chamber (6), the top of the sintering cup (1) has a first opening (12) opposite to the ignition cover (21), the bottom of the sintering cup (1) has a second opening (13) opposite to the vacuum chamber (6), and the top of the vacuum chamber (6) has a third opening (61) opposite to the second opening (13).

9. The sintering cup apparatus of claim 8, wherein: The vacuum chamber (6) is connected with an exhaust fan (62) and a combustion air fan (63) on one side.

10. The sintering cup apparatus of claim 2, wherein: Further comprising a control system (7), the control system (7) is connected with the igniter (22) and the transmission device (4) respectively.

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