An experimental apparatus for studying sintering flue gas recirculation process

Abstract

This invention discloses an experimental apparatus for studying sintering flue gas circulation processes, comprising a first sintering cup, a second sintering cup, a mixing system, a sample distribution device, a material distribution device, a first flue gas pipeline, a second flue gas pipeline, a third flue gas pipeline, an exhaust pipeline, a flue gas circulation pipeline, an ignition device, a flue gas injection device, a single-roll crushing device, a first sintering cup rotation device, a second sintering cup rotation device, a drop screening system, a sinter transport trolley, a track, a drum strength testing device, a weighing device, and multiple thermocouples. By controlling the regulating valve, the flue gas pipeline system of the dual-station sintering cups achieves flue gas circulation for different process requirements, satisfying laboratory research needs for internal sintering circulation, external sintering circulation, different section flue gas circulation, cooling flue gas circulation to hot air sintering, sintering flue gas circulation to sinter cooling, and hot air circulation to sinter cooling.

Description

Technical Field

[0001] This invention relates to the field of sintering process technology, and in particular to an experimental apparatus for studying sintering flue gas recirculation process. Background Technology

[0002] To study and master the principles and technical parameters of flue gas recirculation sintering technology, and to explore a sintering flue gas recirculation process that truly meets specific needs, extensive sintering experiments are required in the laboratory. However, current laboratory studies primarily use artificial gas distribution to simulate sintering flue gas, rather than real sintering flue gas, which cannot provide accurate evidence for the implementation of a reasonable sintering flue gas recirculation process; nor do they involve specific simulations of each process step in sintering flue gas recirculation. Summary of the Invention

[0003] This application provides an experimental apparatus for studying sintering flue gas circulation processes, which solves the technical problems in related technologies such as the lack of real sintering flue gas and the lack of specific simulations of related sintering flue gas circulation processes.

[0004] This application provides an experimental apparatus for studying sintering flue gas recirculation processes, comprising:

[0005] The first sintering cup and the second sintering cup are set separately;

[0006] The mixing system, the sampling device, and the material distribution device are arranged sequentially. The material distribution device is used to distribute material to the first sintering cup and the second sintering cup or to the first sintering cup.

[0007] The first flue gas pipeline has its inlet end connected to the first sintering cup. The first flue gas pipeline is sequentially equipped with a first regulating valve, a first dust collector, a first main exhaust fan, and a second regulating valve along the airflow direction.

[0008] The second flue gas pipeline is connected to the second sintering cup at its inlet end. The second flue gas pipeline is sequentially equipped with a third regulating valve, a second dust collector, a second main exhaust fan, and a fourth regulating valve along the airflow direction.

[0009] The third flue gas pipeline has its inlet end connected to the second sintering cup and its outlet end connected to the pipe body of the first flue gas pipeline located between the first regulating valve and the first dust collector. The third flue gas pipeline is sequentially equipped with a fifth regulating valve, a sintered ore cooling device and a sixth regulating valve along the airflow direction.

[0010] The exhaust pipe is connected at the inlet to the outlet of the first flue gas pipe and the outlet of the second flue gas pipe. The exhaust pipe is equipped with a seventh regulating valve, a flue gas purification system and a chimney in sequence along the airflow direction.

[0011] The flue gas circulation pipeline has its inlet end connected to the outlet end of the first flue gas pipeline and the outlet end of the second flue gas pipeline. The outlet end of the flue gas circulation pipeline is set towards the second sintering cup. The flue gas circulation pipeline includes an eighth regulating valve, a mixing device and a ninth regulating valve arranged sequentially along the airflow direction, as well as a tenth regulating valve arranged in parallel with the eighth regulating valve, the mixing device and the ninth regulating valve.

[0012] An ignition device for igniting the mixture inside the first sintering cup and / or the second sintering cup;

[0013] The flue gas injection device is positioned towards the second sintering cup;

[0014] A single-roll crushing device is installed between the first sintering cup and the second sintering cup;

[0015] The first sintering cup rotary device is used to pour the sintered ore in the first sintering cup into the single roller crushing device.

[0016] The second sintering cup rotary device is used to pour the sintered ore in the second sintering cup into the single roller crushing device.

[0017] A drop sieving system is used to form a drum strength test sample through drop sieving.

[0018] The sinter transport trolley is located below the single-roll crusher and is used to transport sinter after it has been crushed by the single-roll crusher.

[0019] The track is used for the movement of the sinter transport trolley, and the track leads to the sinter cooling device or the falling screening system.

[0020] A drum strength testing device for testing the strength of test samples.

[0021] A weighing device is connected to a sinter transport trolley to weigh the sinter falling into the sinter transport trolley.

[0022] Multiple thermocouples are installed in the ignition device, the flue gas injection device, the base of the first sintering cup, the temperature measuring hole along the height direction of the first sintering cup, the base of the second sintering cup, and the temperature measuring hole along the height direction of the second sintering cup.

[0023] The first, second, and third flue gas pipelines are all equipped with flow meters, differential pressure transmitters, and several flue gas composition measurement holes. The exhaust pipeline and the flue gas circulation pipeline are also equipped with flow meters and several flue gas composition measurement holes. Flue gas analyzers are inserted into all the flue gas composition measurement holes.

[0024] The beneficial effects of this application include at least the following: by using a dual-station sintering cup and employing real sintering flue gas for circulation, the simulation and practicality of the sintering flue gas circulation experiment are improved; the sintering ore cooling device is used to cool the sintering ore through the main exhaust fan, which has strong versatility; the flue gas purification system is used to purify the exhaust sintering flue gas, improving the environmental benefits of the experiment; and various sintering flue gas circulation processes, such as internal circulation, external circulation, different sections of flue gas circulation, cooling flue gas circulation to hot air sintering, sintering flue gas circulation to sintering ore cooling, and hot air circulation to sintering ore cooling, are realized by using flue gas injection devices, various flue gas pipeline systems, and circulating flue gas pipeline systems. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0026] Figure 1 This is a schematic diagram of an experimental apparatus for studying sintering flue gas recirculation process, provided in this application.

[0027] Attached diagram labels: 1-Flue gas injection device, 2-Ignition device, 3-Second sintering cup, 4-Third regulating valve, 5-Second flue gas pipeline, 6-Second dust collector, 7-Second main exhaust fan, 8-Fourth regulating valve, 9-Exhaust pipe, 10-Seventh regulating valve, 11-Flue gas purification system, 12-Chimney, 13-Eighth regulating valve, 14-Gas mixing device, 15-Ninth regulating valve, 16-Tenth regulating valve, 17-Flue gas circulation pipeline, 18-First sintering cup, 19-Single roller crusher, 20-Fifth regulating valve, 21-Third flue gas pipeline, 22-Sintered ore cooling device, 23-Sixth regulating valve, 24-First regulating valve, 25-First flue gas pipeline, 27-First dust collector, 28-First main exhaust fan, 29-Second regulating valve. Detailed Implementation

[0028] This application provides an experimental apparatus for studying sintering flue gas circulation processes, which solves the technical problems in related technologies such as the lack of real sintering flue gas and the lack of specific simulations of related sintering flue gas circulation processes.

[0029] The technical solution of the specific implementation method will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Example 1

[0031] Please refer to Figure 1This embodiment provides an experimental apparatus for studying the sintering flue gas circulation process, including a first sintering cup 18, a second sintering cup 3, a mixing system, a sample distribution device, a material distribution device, a first flue gas pipeline 25, a second flue gas pipeline 5, a third flue gas pipeline 21, an exhaust pipeline 9, a flue gas circulation pipeline 17, an ignition device 2, a flue gas injection device 1, a single roller crushing device 19, a rotating device for the first sintering cup 18, a rotating device for the second sintering cup 3, a falling screening system, a sinter transport trolley, a track, a drum strength testing device, a weighing device, and multiple thermocouples.

[0032] The first sintering cup 18 and the second sintering cup 3 are separately arranged; the mixing system, the sampling device, and the feeding device are arranged in sequence, and the feeding device is used to feed material into the first sintering cup 18 and the second sintering cup 3 or to feed material into the first sintering cup 18; the ignition device 2 is used to ignite the mixture in the first sintering cup 18 and / or the second sintering cup 3; the first sintering cup 18 is rotated to pour the sintered ore in the first sintering cup 18 into the single roller crushing device 19; the second sintering cup 3 is rotated to pour the sintered ore in the second sintering cup 3 into the single roller crushing device 19.

[0033] In this scheme, the ignition device 2, the feeding device, the first sintering cup 18 and the first sintering cup 18 rotation device constitute the first station sintering machine, and the ignition device 2, the feeding device, the second sintering cup 3 and the second sintering cup 3 rotation device constitute the second station sintering machine.

[0034] The single-roll crusher 19 is located between the first sintering cup 18 and the second sintering cup 3, that is, the first station sinterer and the second station sinterer are located on both sides of the single-roll crusher 19.

[0035] The sinter conveying trolley is positioned below the single-roll crusher 19. The sinter, after being crushed by the single-roll crusher 19, is transported via the sinter conveying trolley. This design also includes a track for the sinter conveying trolley, which connects to the sinter cooling device 22 or the drop screening system. The sinter conveying trolley can choose to move along the track, either passing through the sinter cooling device 22 or not, to the drop screening system. This allows for simulation of the cooling process within the sintering cup, the exhaust cooling process within the sinter cooling device 22, and the subsequent drum strength test via the drop screening system. The sinter cooling device 22 provides both external and internal cooling options for the sintering cup, improving the versatility and simulation capabilities of the experiment.

[0036] The drop screening system includes a drop device and a screening device. The drop screening forms a drum strength test sample, which is then tested by the drum strength testing device.

[0037] This solution also includes a weighing device connected to the sinter transport trolley, which is used to weigh the sinter falling into the sinter transport trolley.

[0038] For the piping involved in this plan, please refer to... Figure 1 The inlet end of the first flue gas duct 25 is connected to the first sintering cup 18. The first flue gas duct 25 is provided with a first regulating valve 24, a first dust collector 27, a first main exhaust fan 28 and a second regulating valve 29 in sequence along the airflow direction. The inlet end of the second flue gas duct 5 is connected to the second sintering cup 3. The second flue gas duct 5 is provided with a third regulating valve 4, a second dust collector 6, a second main exhaust fan 7 and a fourth regulating valve 8 in sequence along the airflow direction.

[0039] The inlet end of the third flue gas pipeline 21 is connected to the second sintering cup 3, and the outlet end of the third flue gas pipeline 21 is connected to the pipe body of the first flue gas pipeline 25 located between the first regulating valve 24 and the first dust collector 27. The third flue gas pipeline 21 is sequentially equipped with the fifth regulating valve 20, the sintered ore cooling device 22, and the sixth regulating valve 23 along the airflow direction. The inlet end of the exhaust pipe 9 is connected to the outlet end of the first flue gas pipeline 25 and the outlet end of the second flue gas pipeline 5. The exhaust pipe 9 is sequentially equipped with the seventh regulating valve 1 along the airflow direction. 0. Flue gas purification system 11 and chimney 12; flue gas circulation pipeline 17, the inlet end of which is connected to the outlet end of the first flue gas pipeline 25 and the outlet end of the second flue gas pipeline 5, the outlet end of the flue gas circulation pipeline 17 is set towards the second sintering cup 3, the flue gas circulation pipeline 17 includes an eighth regulating valve 13, a gas mixing device 14 and a ninth regulating valve 15 arranged sequentially along the airflow direction, and a tenth regulating valve 16 arranged in parallel with the eighth regulating valve 13, the gas mixing device 14 and the ninth regulating valve 15.

[0040] It should be noted that this scheme has a gas mixing device 14 installed in the flue gas circulation pipeline 17 to ensure the comparability and simulation of the sintering flue gas circulation process.

[0041] This solution includes a flue gas injection device 1, which is positioned toward the second sintering cup 3 so that the relevant flue gas can be injected to the target location, such as the surface of the mixture inside the second sintering cup 3.

[0042] This scheme also includes measurement data points, including multiple thermocouples located at the ignition device 2, the flue gas injection device 1, the base of the first sintering cup 18, the temperature measuring holes along the height direction of the first sintering cup 18, the base of the second sintering cup 3, and the temperature measuring holes along the height direction of the second sintering cup 3; flow meters, differential pressure transmitters, and several flue gas composition measuring holes are installed in the first flue gas pipeline 25, the second flue gas pipeline 5, and the third flue gas pipeline 21; flow meters and several flue gas composition measuring holes are installed in the exhaust pipeline 9 and the flue gas circulation pipeline 17; and a flue gas analyzer is inserted into each flue gas composition measuring hole. The flue gas analyzer is used to detect the flue gas composition.

[0043] Optionally, the experimental setup also includes a PLC, which controls the first regulating valve 24, the second regulating valve 29, the third regulating valve 4, the fourth regulating valve 8, the fifth regulating valve 20, the sixth regulating valve 23, the seventh regulating valve 10, the eighth regulating valve 13, the ninth regulating valve 15, and the tenth regulating valve 16. By controlling the relevant regulating valves via the PLC, automatic control can be achieved, enabling experimental simulation of a specific sintering flue gas recirculation process.

[0044] The above-mentioned flue gas composition measuring holes are optionally provided in the following ways: the first flue gas pipeline 25 is provided with flue gas composition measuring holes before and after the first dust collector 27; the second flue gas pipeline 5 is provided with flue gas composition measuring holes before and after the second dust collector 6; the third flue gas pipeline 21 is provided with flue gas composition measuring holes before and after the sintered ore cooling device 22; the exhaust pipe 9 is provided with flue gas composition measuring holes before and after the flue gas purification system 11; and the flue gas circulation pipeline 17 is provided with flue gas composition measuring holes before and after the mixing device 14.

[0045] Optionally, the experimental setup also includes a data system, which acquires test data from the drum strength testing device, weighing data from the weighing device, temperature data from the thermocouples, flow data from the flow meter, and data from the flue gas analyzer. The data system collects the measurement data, and in more feasible implementations, automatically analyzes the data under pre-defined operating logic.

[0046] In summary, it has at least the following beneficial effects:

[0047] By using a dual-station sintering cup and employing real sintering flue gas for circulation, the simulation and practicality of the sintering flue gas circulation experiment are improved.

[0048] The sinter cooling device 22 uses a main exhaust fan to cool the sinter, which has strong versatility.

[0049] Using PLC can enable automatic and precise control and recording of the temperature, flow rate, composition, and other parameters of experimental sintering circulating flue gas or hot air circulating flue gas, thereby improving the stability and accuracy of sintering flue gas circulation experiments.

[0050] The flue gas purification system 11 is used to purify the sintering flue gas discharged from the outside, thereby improving the environmental benefits of the experiment.

[0051] The process employs a flue gas injection device 1, various flue gas pipeline systems, and a circulating flue gas pipeline system to simulate various sintering flue gas circulation processes, including internal circulation, external circulation, different sections of flue gas circulation, cooling flue gas circulation to hot air sintering, sintering flue gas circulation to sintered ore cooling, and hot air circulation to sintered ore cooling.

[0052] It should be noted that the following embodiments involve a scheme of blowing and igniting the second sintering cup 3, specifically the ignition time of the second sintering cup 3 is before the blowing time to the material surface of the second sintering cup 3.

[0053] Example 2

[0054] Based on the experimental apparatus for studying the sintering flue gas recirculation process in Example 1, this example provides an experimental method for the internal recirculation process of sintering flue gas, specifically including:

[0055] The sintering raw materials are mixed and granulated in a mixing system in sequence, and then evenly divided into two portions by a sampling device. One portion is used to generate sintering circulating flue gas, and the other portion is used to receive sintering circulating delayed flue gas. The two portions are distributed to the first sintering cup 18 and the second sintering cup 3 by a material distribution device, respectively.

[0056] The ignition temperature and time of the ignition device 2 are controlled by the PLC, so that the ignition device 2 ignites the first sintering cup 18. The sintering flue gas generated during the sintering process of the mixture in the first sintering cup 18 runs along the first flue gas pipeline 25 and the exhaust pipeline 9 (specifically, it passes through the first regulating valve 24, the first dust collector 27, the first main exhaust fan 28, the second regulating valve 29, the seventh regulating valve 10, the flue gas purification system 11, and the chimney 12 in sequence; the logic in other similar descriptions is the same as here). When the internal circulation time arrives, the sintering flue gas generated during the sintering process of the mixture in the first sintering cup 18 runs along the first flue gas pipeline 25 and the flue gas circulation pipeline 17 and passes through the mixing device 14 and is sprayed onto the material surface of the second sintering cup 3 through the flue gas injection device 1. The flue gas flow rate and injection time of the flue gas injection device 1, as well as the temperature, flow rate, and composition of the sintering internal circulation flue gas, are obtained, and the detection data can be automatically transmitted to the data system.

[0057] After igniting the first sintering cup 18, the ignition device 2 ignites the second sintering cup 3 at intervals. The sintering flue gas generated in the second sintering cup 3 runs along the second flue gas pipeline 5 and the exhaust pipe 9. The temperature of the material layer in the second sintering cup 3 and the temperature, flow rate and composition of the sintering flue gas generated in the second sintering cup 3 are obtained. The detection data can be automatically transmitted to the data system.

[0058] After the sintering and cooling processes of the mixture in the first sintering cup 18 are completed, the cooled sintered ore is poured into the single-roll crusher 19 through the rotary device of the first sintering cup 18. The crushed cold sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. Alternatively, after the sintering process of the mixture in the first sintering cup 18 is completed, the hot sintered ore is poured into the single-roll crusher 19 through the rotary device of the first sintering cup 18. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device 22. The first main exhaust fan 28 is operated. The sintered ore cooling device 22, the first flue gas pipeline 25 and the exhaust pipe 9 are connected in sequence. The hot sintered ore is cooled to a certain temperature by the exhaust fan 28 to form cold sintered ore.

[0059] The cold sintered ore is transported to the falling screen system via a sintered ore transport trolley. The sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The test data can be automatically transmitted to the data system.

[0060] The sintered ore in the second sintering cup 3 is poured into the single roller crushing device 19 through the rotary device of the second sintering cup 3. The sintered ore transport trolley returns to the bottom of the single roller crushing device 19 and transports the sintered ore in the second sintering cup 3. Weighing, drop screening and drum strength test are performed in sequence, or weighing, cooling, drop screening and drum strength test are performed. The test data can be automatically transmitted to the data system.

[0061] The weighing, drop screening, and drum strength test of the sinter in the second sintering cup 3, or the weighing, cooling, drop screening, and drum strength test, are similar to those of the sinter in the first sintering cup 18, and will not be described in detail again (the following embodiments are similar).

[0062] Example 3

[0063] Based on the experimental apparatus for studying the sintering flue gas recirculation process in Example 1, this example provides an experimental method for the external recirculation process of sintering flue gas, specifically including:

[0064] The sintering raw materials are mixed and granulated in a mixing system in sequence, and then evenly divided into two portions by a sampling device. One portion is used to generate sintering circulating flue gas, and the other portion is used to receive sintering circulating delayed flue gas. The two portions are distributed to the first sintering cup 18 and the second sintering cup 3 by a material distribution device, respectively.

[0065] The ignition temperature and time of the ignition device 2 are controlled by the PLC, so that the ignition device 2 ignites the first sintering cup 18. The sintering flue gas generated in the first sintering cup 18 is sprayed along the first flue gas pipeline 25 and the flue gas circulation pipeline 17 and through the mixing device 14 to the material surface of the second sintering cup 3 by the flue gas injection device 1. The flue gas flow rate and injection time of the flue gas injection device 1, as well as the temperature, flow rate and composition of the circulating flue gas in the sintering process are obtained, and the detection data can be automatically transmitted to the data system.

[0066] After igniting the first sintering cup 18, the ignition device 2 ignites the second sintering cup 3 at intervals. The sintering flue gas generated in the second sintering cup 3 and the unused external circulating flue gas generated in the first sintering cup 18 run along the second flue gas pipeline 5 and the exhaust pipeline 9 to obtain the material layer temperature in the second sintering cup 3 and the temperature, flow rate and composition of the sintering flue gas generated in the second sintering cup 3. The detection data can be automatically transmitted to the data system.

[0067] After the sintering and cooling processes of the mixture in the first sintering cup 18 are completed, the cooled sintered ore is poured into the single-roll crusher 19 through the rotary device of the first sintering cup 18. The crushed cold sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. Alternatively, after the sintering process of the mixture in the first sintering cup 18 is completed, the hot sintered ore is poured into the single-roll crusher 19 through the rotary device of the first sintering cup 18. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device 22. The first main exhaust fan 28 is operated. The sintered ore cooling device 22, the first flue gas pipeline 25 and the exhaust pipe 9 are connected in sequence. The hot sintered ore is cooled to a certain temperature by the exhaust fan 28 to form cold sintered ore.

[0068] The cold sintered ore is transported to the falling screen system via a sintered ore transport trolley. The sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The test data can be automatically transmitted to the data system.

[0069] The sintered ore in the second sintering cup 3 is poured into the single roller crushing device 19 through the rotary device of the second sintering cup 3. The sintered ore transport trolley returns to the bottom of the single roller crushing device 19 and transports the sintered ore in the second sintering cup 3. Weighing, drop screening and drum strength test are performed in sequence, or weighing, cooling, drop screening and drum strength test are performed. The test data can be automatically transmitted to the data system.

[0070] Example 4

[0071] Based on the experimental apparatus for studying the sintering flue gas recirculation process in Example 1, this example provides an experimental method for the sintering flue gas recirculation process in any section, specifically including:

[0072] The sintering raw materials are mixed and granulated in a mixing system in sequence, and then evenly divided into two portions by a sampling device. One portion is used to generate sintering circulating flue gas, and the other portion is used to receive sintering circulating delayed flue gas. The two portions are distributed to the first sintering cup 18 and the second sintering cup 3 by a material distribution device, respectively.

[0073] The ignition temperature and time of the ignition device 2 are controlled by the PLC, so that the ignition device 2 ignites the first sintering cup 18. The sintering flue gas generated in the first sintering cup 18 runs along the first flue gas pipeline 25 and the exhaust pipe 9. When the circulation time is reached, the sintering flue gas generated in the first sintering cup 18 runs along the first flue gas pipeline 25 and the flue gas circulation pipeline 17 without passing through the mixing device 14 and is sprayed to the material surface of the second sintering cup 3 by the flue gas injection device 1. The flue gas flow rate and injection time of the flue gas injection device 1, as well as the temperature, flow rate and composition of the circulating flue gas in the sintering process are obtained, and the detection data can be automatically transmitted to the data system.

[0074] After igniting the first sintering cup 18, the ignition device 2 ignites the second sintering cup 3 at intervals. The sintering flue gas generated in the second sintering cup 3 runs along the second flue gas pipeline 5 and the exhaust pipe 9. The temperature of the material layer in the second sintering cup 3 and the temperature, flow rate and composition of the sintering flue gas generated in the second sintering cup 3 are obtained. The detection data can be automatically transmitted to the data system.

[0075] After the sintering and cooling processes of the mixture in the first sintering cup 18 are completed, the cooled sintered ore is poured into the single-roll crusher 19 through the rotary device of the first sintering cup 18. The crushed cold sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. Alternatively, after the sintering process of the mixture in the first sintering cup 18 is completed, the hot sintered ore is poured into the single-roll crusher 19 through the rotary device of the first sintering cup 18. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device 22. The first main exhaust fan 28 is operated. The sintered ore cooling device 22, the first flue gas pipeline 25 and the exhaust pipe 9 are connected in sequence. The hot sintered ore is cooled to a certain temperature by the exhaust fan 28 to form cold sintered ore.

[0076] The cold sintered ore is transported to the falling screen system via a sintered ore transport trolley. The sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The test data can be automatically transmitted to the data system.

[0077] The sintered ore in the second sintering cup 3 is poured into the single roller crushing device 19 through the rotary device of the second sintering cup 3. The sintered ore transport trolley returns to the bottom of the single roller crushing device 19 and transports the sintered ore in the second sintering cup 3. Weighing, drop screening and drum strength test are performed in sequence, or weighing, cooling, drop screening and drum strength test are performed. The test data can be automatically transmitted to the data system.

[0078] Example 5

[0079] Based on the experimental apparatus for studying the sintering flue gas recirculation process in Example 1, this example provides an experimental method for circulating cooling flue gas to a hot air sintering process, specifically including:

[0080] The sintering raw materials are mixed and granulated in a mixing system in sequence, and then evenly divided into two portions by a sampling device. One portion is used to generate sintering circulating flue gas, and the other portion is used to receive sintering circulating delayed flue gas. The two portions are distributed to the first sintering cup 18 and the second sintering cup 3 by a material distribution device, respectively.

[0081] The ignition temperature and time of the ignition device 2 are controlled by the PLC, causing the ignition device 2 to ignite the first sintering cup 18. After the sintering process in the first sintering cup 18 is completed, the sintered ore cooling process in the first sintering cup 18 (i.e., the sintered ore is still in the first sintering cup 18, and the first main exhaust fan 28 of the first flue gas pipeline 25 runs, the sintered ore in the first sintering cup 18 is cooled and cooling circulating flue gas is generated) generates sintering flue gas along the first flue gas pipeline 25, the flue gas circulation pipeline 17 and passes through or The material is sprayed from the flue gas injection device 1 to the material surface of the second sintering cup 3 without passing through the mixing device 14. The flue gas flow rate and injection time of the flue gas injection device 1, as well as the temperature, flow rate and composition of the cooling circulating flue gas, are obtained. After the sintering and cooling processes of the mixed material in the first sintering cup 18 are completed, the cooled sinter is poured into the single roller crushing device 19 through the first sintering cup 18 rotary device. The crushed cold sinter falls into the sinter transport trolley and is measured by the weighing device. The detection data can be automatically transmitted to the data system.

[0082] Alternatively, the above-mentioned solution can be replaced as follows: Ignition device 2 ignites the first sintering cup 18. After the sintering process in the first sintering cup 18 is completed, the hot sintered ore is poured into the single-roll crusher 19 through the rotating device of the first sintering cup 18. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device 22. The first main exhaust fan 28 is run, and the sintered ore cooling device 22, the first flue gas pipeline 25, and the flue gas circulation pipeline 17 are connected sequentially. When the hot sintered ore is cooled to a certain temperature by the first main exhaust fan 28, it becomes cold sintered ore (unlike the cooling process in the previous section, the cooling process here is that the sintered ore is cooled in the sintered ore cooling device 22). The sintering flue gas generated during the cooling process of the hot sintered ore in the sintered ore cooling device 22 is sprayed onto the material surface of the second sintering cup 3 through the flue gas injection device 1. The flue gas flow rate and injection time of the flue gas injection device 1, as well as the temperature, flow rate and composition of the cooling circulating flue gas, are obtained, and the detection data can be automatically transmitted to the data system.

[0083] The cold sintered ore is transported to the falling screen system via a sintered ore transport trolley. The sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The test data can be automatically transmitted to the data system.

[0084] The sintered ore in the second sintering cup 3 is poured into the single roller crushing device 19 through the rotary device of the second sintering cup 3. The sintered ore transport trolley returns to the bottom of the single roller crushing device 19 and transports the sintered ore in the second sintering cup 3. Weighing, drop screening and drum strength test are performed in sequence, or weighing, cooling, drop screening and drum strength test are performed. The test data can be automatically transmitted to the data system.

[0085] Example 6

[0086] Based on the experimental apparatus for studying the sintering flue gas recirculation process in Example 1, this example provides an experimental method for recirculating sintering flue gas to a sinter cooling process, specifically including:

[0087] The sintering raw materials are mixed and granulated in a mixing system in sequence, and then evenly divided into two portions by a sampling device. One portion is used to generate sintering circulating flue gas, and the other portion is used to receive sintering circulating delayed flue gas. The two portions are distributed to the first sintering cup 18 and the second sintering cup 3 by a material distribution device, respectively.

[0088] The ignition temperature and time of the ignition device 2 are controlled by the PLC, so that the ignition device 2 ignites the first sintering cup 18. The hot sinter generated by the first sintering cup 18 is poured into the single roller crushing device 19 through the first sintering cup 18 rotary device. The crushed hot sinter falls into the sinter transport trolley and is measured by the weighing device. Then the sinter transport trolley containing the crushed hot sinter is moved to the sinter cooling device 22. The detection data can be automatically transmitted to the data system.

[0089] After igniting the first sintering cup 18, the ignition device 2 ignites the second sintering cup 3 at intervals. The sintering flue gas generated in the second sintering cup 3 enters the hot sintered ore surface in the sintered ore cooling device 22 through the third flue gas pipeline 21. After passing through the sixth regulating valve 23, it is discharged through the first flue gas pipeline 25 and the exhaust pipe 9. The flow rate and blowing time of the sintering flue gas entering the sintered ore cooling device 22, as well as the temperature, flow rate and composition of the sintering flue gas, are obtained. The detection data can be automatically transmitted to the data system.

[0090] When the hot sinter in the sinter cooling device 22 is cooled to a certain temperature, the hot sinter is transported to the falling screening system by the sinter transport trolley. The sinter of each particle size formed by screening is weighed, and the drum strength test sample is sent to the drum strength test device for testing. The test data can be automatically transmitted to the data system.

[0091] The sintered ore in the second sintering cup 3 is poured into the single roller crushing device 19 through the rotary device of the second sintering cup 3. The sintered ore transport trolley returns to the bottom of the single roller crushing device 19 and transports the sintered ore in the second sintering cup 3. Weighing, drop screening and drum strength test are performed in sequence, or weighing, cooling, drop screening and drum strength test are performed. The test data can be automatically transmitted to the data system.

[0092] Example 7

[0093] Based on the experimental apparatus for studying the sintering flue gas recirculation process in Example 1, this example provides an experimental method for hot air recirculation to sinter cooling process, specifically including:

[0094] After the sintering raw materials are mixed and granulated in the mixing system, they are distributed to the first sintering cup 18 by the material distribution device.

[0095] The ignition temperature and time of the ignition device 2 are controlled by the PLC, so that the ignition device 2 ignites the first sintering cup 18. After the sintering process in the first sintering cup 18 is completed, the hot sintered ore is poured into the single roller crushing device 19 by the first sintering cup 18 rotary device. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. Then the sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device 22. The detection data can be automatically transmitted to the data system.

[0096] Ignition device 2 ignites second sintering cup 3. The generated hot air enters the hot sintering material surface of sintering ore cooling device 22 through third flue gas pipeline 21, and then passes through first flue gas pipeline 25 and exhaust pipe 9 through sixth regulating valve 23. The flow rate and blowing time of hot air entering sintering ore cooling device 22, as well as the temperature, flow rate and composition of hot air, are obtained. The detection data can be automatically transmitted to the data system.

[0097] When the hot sinter in the sinter cooling device 22 is cooled to a certain temperature, the hot sinter is transported to the falling screening system by the sinter transport trolley. The sinter of each particle size formed by screening is weighed, and the drum strength test sample is sent to the drum strength test device for testing. The test data can be automatically transmitted to the data system.

[0098] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0099] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An experimental apparatus for studying sintering flue gas recirculation processes, characterized in that, The experimental apparatus includes: The first sintering cup and the second sintering cup are separately disposed; The mixing system, the sample dispensing device, and the material dispensing device are arranged sequentially. The material dispensing device is used to dispense material into the first sintering cup and the second sintering cup, or to dispense material into the first sintering cup. The first flue gas pipeline has its inlet end connected to the first sintering cup. The first flue gas pipeline is sequentially provided with a first regulating valve, a first dust collector, a first main exhaust fan, and a second regulating valve along the airflow direction. The second flue gas pipeline is connected to the second sintering cup at its inlet end. The second flue gas pipeline is provided with a third regulating valve, a second dust collector, a second main exhaust fan and a fourth regulating valve in sequence along the airflow direction. The third flue gas pipeline has its inlet end connected to the second sintering cup and its outlet end connected to the pipe body of the first flue gas pipeline located between the first regulating valve and the first dust collector. The third flue gas pipeline is provided with a fifth regulating valve, a sintered ore cooling device and a sixth regulating valve in sequence along the airflow direction. The exhaust pipe is connected at its inlet to the outlet of the first flue gas pipe and the outlet of the second flue gas pipe. The exhaust pipe is provided with a seventh regulating valve, a flue gas purification system and a chimney in sequence along the airflow direction. The flue gas circulation pipeline has its inlet end connected to the outlet end of the first flue gas pipeline and the outlet end of the second flue gas pipeline. The outlet end of the flue gas circulation pipeline is oriented toward the second sintering cup. The flue gas circulation pipeline includes an eighth regulating valve, a mixing device, and a ninth regulating valve arranged sequentially along the airflow direction, as well as a tenth regulating valve arranged in parallel with the eighth regulating valve, the mixing device, and the ninth regulating valve. An ignition device for igniting the mixture inside the first sintering cup and / or the second sintering cup; The flue gas blowing device is positioned toward the second sintering cup; A single-roll crushing device is disposed between the first sintering cup and the second sintering cup; The first sintering cup rotary device is used to pour the sintered ore in the first sintering cup into the single roller crushing device. The second sintering cup rotary device is used to pour the sintered ore in the second sintering cup into the single roller crushing device; A drop sieving system is used to form a drum strength test sample through drop sieving. A sinter transport trolley is positioned below the single-roll crusher to transport sinter that has been crushed by the single-roll crusher. A track is used for the sinter transport trolley to move, and the track is connected to the sinter cooling device or the falling screening system; A drum strength testing apparatus for testing the drum strength test sample; A weighing device is connected to the sinter transport trolley to weigh the sinter falling into the sinter transport trolley; Multiple thermocouples are disposed in the ignition device, the flue gas injection device, the base of the first sintering cup, the temperature measuring hole along the height direction of the first sintering cup, the base of the second sintering cup, and the temperature measuring hole along the height direction of the second sintering cup. The PLC is used to control the first regulating valve, the second regulating valve, the third regulating valve, the fourth regulating valve, the fifth regulating valve, the sixth regulating valve, the seventh regulating valve, the eighth regulating valve, the ninth regulating valve, and the tenth regulating valve; The first, second, and third flue gas pipelines are each equipped with a flow meter, a differential pressure transmitter, and several flue gas composition measurement holes. The exhaust pipe and the flue gas circulation pipe are each equipped with a flow meter and several flue gas composition measurement holes. Each flue gas composition measurement hole is connected to a flue gas analyzer. The first flue gas pipeline has flue gas composition measurement holes before and after the first dust collector. The second flue gas pipeline has flue gas composition measurement holes before and after the second dust collector. The third flue gas pipeline has flue gas composition measurement holes before and after the sintered ore cooling device. The exhaust pipe has flue gas composition measurement holes before and after the flue gas purification system. The flue gas circulation pipe has flue gas composition measurement holes before and after the gas mixing device. The experimental apparatus also includes a data system, which includes acquiring test data from the drum strength testing device, weighing data from the weighing device, temperature data from the thermocouple, flow data from the flow meter, and data from the flue gas analyzer. The experimental apparatus includes processes for studying sintering flue gas internal circulation, sintering flue gas external circulation, sintering flue gas circulation in any section, cooling flue gas circulation to hot air sintering, sintering flue gas circulation to sintered ore cooling, and hot air circulation to sintered ore cooling.

2. The experimental apparatus as described in claim 1, characterized in that, The experimental apparatus includes a method for studying the internal circulation process of sintering flue gas, and the experimental method for the internal circulation process of sintering flue gas includes: The sintering raw materials are mixed and granulated in the mixing system in sequence, and then evenly divided into two portions by the sampling device. The two portions are then distributed to the first sintering cup and the second sintering cup by the material distribution device, respectively. The ignition device ignites the first sintering cup. The sintering flue gas generated in the first sintering cup runs along the first flue gas pipeline and the exhaust pipeline. When the internal circulation time arrives, the sintering flue gas generated in the first sintering cup runs along the first flue gas pipeline and the flue gas circulation pipeline and passes through the mixing device and is then sprayed onto the material surface of the second sintering cup by the flue gas injection device. The flue gas flow rate and injection time of the flue gas injection device, as well as the temperature, flow rate and composition of the sintering internal circulation flue gas are obtained. After igniting the first sintering cup, the ignition device ignites the second sintering cup at a certain interval. The sintering flue gas generated in the second sintering cup runs along the second flue gas pipeline and the exhaust pipeline to obtain the material layer temperature in the second sintering cup and the temperature, flow rate and composition of the sintering flue gas generated in the second sintering cup. After the sintering and cooling processes of the mixture in the first sintering cup are completed, the cooled sintered ore is poured into the single-roll crusher through the first sintering cup rotary device. The crushed cold sintered ore falls into the sintered ore transport trolley and is measured by a weighing device. Alternatively, after the sintering process of the mixture in the first sintering cup is completed, the hot sintered ore is poured into the single-roll crusher through the first sintering cup rotary device. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by a weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device. The first main exhaust fan is activated, and the sintered ore cooling device, the first flue gas pipeline, and the exhaust pipe are sequentially connected. The hot sintered ore is cooled to a certain temperature by the first main exhaust fan to form cold sintered ore. The cold sintered ore is transported to the falling screening system via the sintered ore transport trolley, and the sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The sinter in the second sintering cup is poured into the single-roll crusher through the second sintering cup rotary device. The sinter transport trolley returns to the bottom of the single-roll crusher and transports the sinter in the second sintering cup. The sinter is then weighed, screened, and tested in a drop drum, or weighed, cooled, screened, and tested in a drop drum.

3. The experimental apparatus as described in claim 1, characterized in that, The experimental apparatus includes a method for studying the external circulation process of sintering flue gas, and the experimental method for the external circulation process of sintering flue gas includes: The sintering raw materials are mixed and granulated in the mixing system in sequence, and then evenly divided into two portions by the sampling device. The two portions are then distributed to the first sintering cup and the second sintering cup by the material distribution device, respectively. The ignition device ignites the first sintering cup, and the sintering flue gas generated in the first sintering cup is sprayed onto the material surface of the second sintering cup by the flue gas injection device through the first flue gas pipeline and the flue gas circulation pipeline and through the gas mixing device. The flue gas flow rate and injection time of the flue gas injection device, as well as the temperature, flow rate and composition of the circulating flue gas in the sintering process are obtained. After igniting the first sintering cup, the ignition device ignites the second sintering cup at a certain interval. The sintering flue gas generated in the second sintering cup and the unused external circulating flue gas generated in the first sintering cup run along the second flue gas pipeline and the exhaust pipeline to obtain the material layer temperature in the second sintering cup and the temperature, flow rate and composition of the sintering flue gas generated in the second sintering cup. After the sintering and cooling processes of the mixture in the first sintering cup are completed, the cooled sintered ore is poured into the single-roll crusher through the first sintering cup rotary device. The crushed cold sintered ore falls into the sintered ore transport trolley and is measured by a weighing device. Alternatively, after the sintering process of the mixture in the first sintering cup is completed, the hot sintered ore is poured into the single-roll crusher through the first sintering cup rotary device. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by a weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device. The first main exhaust fan is activated, and the sintered ore cooling device, the first flue gas pipeline, and the exhaust pipe are sequentially connected. The hot sintered ore is cooled to a certain temperature by the first main exhaust fan to form cold sintered ore. The cold sintered ore is transported to the falling screening system via the sintered ore transport trolley, and the sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The sinter in the second sintering cup is poured into the single-roll crusher through the second sintering cup rotary device. The sinter transport trolley returns to the bottom of the single-roll crusher and transports the sinter in the second sintering cup. The sinter is then weighed, screened, and tested in a drop drum, or weighed, cooled, screened, and tested in a drop drum.

4. The experimental apparatus as described in claim 1, characterized in that, The experimental apparatus includes a method for studying the flue gas recirculation process in any section of sintering, and the experimental method for the flue gas recirculation process in any section of sintering includes: The sintering raw materials are mixed and granulated in the mixing system in sequence, and then evenly divided into two portions by the sampling device. The two portions are then distributed to the first sintering cup and the second sintering cup by the material distribution device, respectively. The ignition device ignites the first sintering cup. The sintering flue gas generated in the first sintering cup runs along the first flue gas pipeline and the exhaust pipeline. When the circulation time arrives, the sintering flue gas generated in the first sintering cup runs along the first flue gas pipeline and the flue gas circulation pipeline and is sprayed onto the material surface of the second sintering cup by the flue gas injection device without passing through the gas mixing device. The flue gas flow rate and injection time of the flue gas injection device, as well as the temperature, flow rate and composition of the circulating flue gas in the sintering process are obtained. After igniting the first sintering cup, the ignition device ignites the second sintering cup at a certain interval. The sintering flue gas generated in the second sintering cup runs along the second flue gas pipeline and the exhaust pipeline to obtain the material layer temperature in the second sintering cup and the temperature, flow rate and composition of the sintering flue gas generated in the second sintering cup. After the sintering and cooling processes of the mixture in the first sintering cup are completed, the cooled sintered ore is poured into the single-roll crusher through the first sintering cup rotary device. The crushed cold sintered ore falls into the sintered ore transport trolley and is measured by a weighing device. Alternatively, after the sintering process of the mixture in the first sintering cup is completed, the hot sintered ore is poured into the single-roll crusher through the first sintering cup rotary device. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by a weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device. The first main exhaust fan is activated, and the sintered ore cooling device, the first flue gas pipeline, and the exhaust pipe are sequentially connected. The hot sintered ore is cooled to a certain temperature by the first main exhaust fan to form cold sintered ore. The cold sintered ore is transported to the falling screening system via the sintered ore transport trolley, and the sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The sinter in the second sintering cup is poured into the single-roll crusher through the second sintering cup rotary device. The sinter transport trolley returns to the bottom of the single-roll crusher and transports the sinter in the second sintering cup. The sinter is then weighed, screened, and tested in a drop drum, or weighed, cooled, screened, and tested in a drop drum.

5. The experimental apparatus as described in claim 1, characterized in that, The experimental apparatus includes a method for studying the process of circulating cooling flue gas to hot air sintering, and the experimental method for the process of circulating cooling flue gas to hot air sintering includes: The sintering raw materials are mixed and granulated in the mixing system in sequence, and then evenly divided into two portions by the sampling device. The two portions are then distributed to the first sintering cup and the second sintering cup by the material distribution device, respectively. The ignition device ignites the first sintering cup. After the sintering process in the first sintering cup is completed, the sintering flue gas generated during the cooling process of the sintered ore in the first sintering cup is injected onto the material surface of the second sintering cup by the flue gas injection device along the first flue gas pipeline, the flue gas circulation pipeline, and with or without passing through the mixing device. The flue gas flow rate and injection time of the flue gas injection device, as well as the temperature, flow rate, and composition of the cooling circulating flue gas, are obtained. After the sintering and cooling processes of the mixed material in the first sintering cup are completed, the cooled sintered ore is poured into the single-roll crushing device through the first sintering cup rotation device. The crushed cold sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. Alternatively, the ignition device ignites the first sintering cup, and the sintering process in the first sintering cup is completed. After the process is completed, the hot sintered ore is poured into the single-roll crusher through the first sintering cup rotary device. The crushed hot sintered ore falls into the sintered ore transport trolley and is measured by the weighing device. The sintered ore transport trolley containing the hot sintered ore is moved to the sintered ore cooling device. The first main exhaust fan is activated, and the sintered ore cooling device, the first flue gas pipeline, and the flue gas circulation pipeline are sequentially connected. The hot sintered ore is cooled to a certain temperature by the first main exhaust fan to form cold sintered ore. The sintering flue gas generated during the cooling process of the hot sintered ore in the sintered ore cooling device is sprayed onto the material surface of the second sintering cup through the flue gas injection device. The flue gas flow rate and injection time of the flue gas injection device, as well as the temperature, flow rate, and composition of the cooling circulating flue gas are obtained. The cold sintered ore is transported to the falling screening system via the sintered ore transport trolley, and the sintered ore of each particle size formed by screening is weighed. The drum strength test sample is sent to the drum strength test device for testing. The sinter in the second sintering cup is poured into the single-roll crusher through the second sintering cup rotary device. The sinter transport trolley returns to the bottom of the single-roll crusher and transports the sinter in the second sintering cup. The sinter is then weighed, screened, and tested in a drop drum, or weighed, cooled, screened, and tested in a drop drum.

6. The experimental apparatus as described in claim 1, characterized in that, The experimental apparatus includes a method for studying the process of circulating sintering flue gas to cool sintered ore, and the experimental method for the process of circulating sintering flue gas to cool sintered ore includes: The sintering raw materials are mixed and granulated in the mixing system in sequence, and then evenly divided into two portions by the sampling device. The two portions are then distributed to the first sintering cup and the second sintering cup by the material distribution device, respectively. The ignition device ignites the first sintering cup, and the hot sintering ore generated by the first sintering cup is poured into the single roller crushing device through the first sintering cup rotation device. The crushed hot sintering ore falls into the sintering ore transport trolley and is measured by the weighing device. Then the sintering ore transport trolley containing the crushed hot sintering ore is moved to the sintering ore cooling device. After igniting the first sintering cup, the ignition device ignites the second sintering cup at a certain interval. The sintering flue gas generated in the second sintering cup enters the hot sintering ore surface in the sintering ore cooling device through the third flue gas pipeline. After passing through the sixth regulating valve, it is discharged through the first flue gas pipeline and the exhaust pipeline. The flow rate and blowing time of the sintering flue gas entering the sintering ore cooling device, as well as the temperature, flow rate and composition of the sintering flue gas are obtained. When the hot sinter in the sinter cooling device is cooled to a certain temperature, the hot sinter is transported to the falling screening system by the sinter transport trolley. The sinter of each particle size formed by screening is weighed, and the drum strength test sample is sent to the drum strength test device for testing. The sinter in the second sintering cup is poured into the single-roll crusher through the second sintering cup rotary device. The sinter transport trolley returns to the bottom of the single-roll crusher and transports the sinter in the second sintering cup. The sinter is then weighed, screened, and tested in a drop drum, or weighed, cooled, screened, and tested in a drop drum.

7. The experimental apparatus as described in claim 1, characterized in that, The experimental apparatus includes a method for studying the hot air circulation to sinter cooling process, and the experimental method for the hot air circulation to sinter cooling process includes: After the sintering raw materials are mixed and granulated in the mixing system, they are distributed to the first sintering cup by the material distribution device. The ignition device ignites the first sintering cup. After the sintering process in the first sintering cup is completed, the hot sintering ore is poured into the single roller crushing device using the first sintering cup rotary device. The crushed hot sintering ore falls into the sintering ore transport trolley and is measured by the weighing device. Then the sintering ore transport trolley containing the hot sintering ore is moved to the sintering ore cooling device. The ignition device ignites the second sintering cup, and the generated hot air enters the hot sintering material surface of the sintering ore cooling device through the third flue gas pipeline, and then passes through the first flue gas pipeline and the exhaust pipe through the sixth regulating valve to obtain the hot air flow rate and blowing time entering the sintering ore cooling device, as well as the temperature, flow rate and composition of the hot air. When the hot sinter in the sinter cooling device is cooled to a certain temperature, the hot sinter is transported to the falling screening system by the sinter transport trolley. The sinter of each particle size formed by screening is weighed, and the drum strength test sample is sent to the drum strength test device for testing.

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