Device and method for measuring rate of generating TiC and TiN by coke and titanium-containing blast furnace slag

Abstract

The invention discloses a device and a method for measuring the rate of generating TiC and TiN by coke and titanium-containing blast furnace slag. The device comprises a reaction furnace; the crucible is arranged in the reaction furnace and is used for accommodating titanium-containing slag; one end of the connecting rod is connected with coke and extends into the reaction furnace, so that the coke is immersed into the titanium-containing slag; and the driving device is connected with the other end of the connecting rod and drives the connecting rod and the coke to rotate, so that the reduction reaction of the titanium-containing slag and the coke is completed in the rotating process. According to the scheme provided by the invention, the rotation measure is added, so that titanium carbonitride generated on the reaction interface of the slag and the coke in the measurement process can be quickly diffused into the slag and is closer to the actual environment that the slag in the blast furnace is in a flowing state, and the result generated by the titanium carbonitride can better reflect the actual condition.

Description

Technical Field

[0001] This invention relates to the field of metallurgy, and specifically to an apparatus and method for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag. Background Technology

[0002] For blast furnaces smelting vanadium-titanium magnetite, due to the presence of TiO2 in the ore, during the ore softening and slag formation processes, and after the titanium-containing blast furnace slag from blast furnace smelting accumulates in the blast furnace hearth, the TiO2 in the slag will inevitably undergo a reduction reaction with a large amount of hot, high-temperature coke, generating a large amount of high-melting-point carbon nitride. Titanium carbonitride has a melting point as high as 2950℃~3150℃, while the average temperature inside the blast furnace hearth does not exceed 1550℃. Once a large amount of titanium carbonitride is generated, it is difficult to eliminate it by heating and melting. Although increasing the oxygen potential has some effect on eliminating titanium carbonitride, the presence of a large amount of high-temperature coke and CO inside the blast furnace creates a strongly reducing environment, which greatly weakens the oxidizing effect. Therefore, once a large amount of titanium carbonitride is generated, the rate of elimination will also become slow. The presence of titanium carbonitride will disperse in the slag in a diffuse or aggregated state. On the one hand, it will prevent the iron beads from agglomerating and growing, hindering the effective separation of slag and iron. On the other hand, it will increase the viscosity of the slag and reduce its fluidity, further deteriorating the slag-iron separation effect. It will also affect the slag and iron tapping process, leading to an increase in the blast pressure inside the furnace, forcing the furnace to reduce the blast, and deteriorating the technical and economic indicators of the blast furnace. Most seriously, the formation of titanium carbonitride will cause the central column of the blast furnace hearth to accumulate due to the formation of titanium carbonitride, resulting in severe hearth adhesion at the edge. The normal production volume of the hearth will be reduced, which will cause fluctuations in furnace conditions and cause huge economic losses and resource waste of tens of millions of yuan.

[0003] Numerous studies have been conducted on the formation of titanium carbonitride inside blast furnaces, both qualitatively and through blast furnace dissection. Blast furnace dissection is performed after shutdown, during which a large amount of slag and iron has been removed, resulting in a significantly lower amount of titanium-containing slag compared to normal smelting conditions. Furthermore, the reduction reaction between the titanium-containing slag and coke continues during shutdown, greatly extending the reduction time. Therefore, the titanium carbonitride content obtained from these studies may be much higher than in actual production. Laboratory qualitative studies lack a unified methodology. Factors such as reduction temperature, reduction time, slag quantity, and coke shape all affect the amount and proportion of titanium carbonitride formed. Current experimental conditions involve static reduction of molten slag and coke, while in actual production, molten slag is in a flowing state within the hearth. Therefore, only qualitative, generalized descriptions can be obtained, and the specific numerical values ​​cannot represent reality. This leads to situations where the experimentally obtained slag has a high titanium carbonitride content, but the actual blast furnace slag obtained in production has a low titanium carbonitride content. Summary of the Invention

[0004] In view of this, in order to overcome at least one aspect of the above-mentioned problems, embodiments of the present invention provide an apparatus for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag, comprising: Reactor; A crucible, placed inside the reactor and used to contain titanium-containing molten slag; A connecting rod, one end of which is connected to coke, extends into the reactor so that the coke is immersed in the titanium-containing slag; A driving device is connected to the other end of the connecting rod and drives the connecting rod and the coke to rotate, so as to complete the reduction reaction between the titanium-containing slag and the coke during the rotation process.

[0005] In some embodiments, the drive device further includes a hydraulic lifter, a connecting rod, and a drive motor; The drive motor is connected to the other end of the connecting rod and is used to drive the connecting rod to rotate; the connecting rod is used to connect the hydraulic lifter and the drive motor; the hydraulic lifter is used to drive the drive motor and the connecting rod to move up and down.

[0006] In some embodiments, the connecting rod includes a molybdenum rod and a corundum sleeve; One end of the molybdenum rod extends into the coke, and the other end is connected to the drive device; the corundum sleeve is used to wrap the part of the molybdenum rod exposed in the reactor.

[0007] In some embodiments, the coke includes a first borehole drilled downward from the center of the upper end face of the coke and a second borehole drilled laterally from the side of the coke, the second borehole passing through the first borehole; one end of the molybdenum rod is provided with a circular hole, and one end of the molybdenum rod extends into the first borehole; The connecting rod also includes a molybdenum wire, which is inserted into the second drill hole and passes through the circular hole of the molybdenum rod.

[0008] In some embodiments, the reactor includes: Furnace body; A corundum furnace tube is disposed inside the furnace body and is used to place the crucible. A silicon-molybdenum heating rod is disposed in the corundum furnace tube and used for heating; Two temperature-measuring thermocouples are respectively installed on the side wall and the center of the furnace body.

[0009] In some embodiments, the reactor further includes: A furnace cover is located on the top of the furnace body and has a fan-shaped opening and closing cover plate. When the cover plate is closed, it has a central aperture. The connecting rod passes through the aperture and is connected to the driving device.

[0010] In some embodiments, the reactor further includes: A crucible support base is disposed inside the corundum furnace tube to support the crucible.

[0011] In some embodiments, the reactor further includes: The protective gas inlet is located at the bottom of the furnace body; The exhaust vent is located at the top of the furnace body.

[0012] In some embodiments, the present invention also provides a method for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag, comprising the steps of: Place titanium-containing blast furnace slag into the crucible; The graphite crucible is placed in the reaction furnace and heated to the test temperature so that the titanium-containing blast furnace slag is completely melted into titanium-containing molten slag. A driving device is used to lower the connecting rod and the coke connected to the connecting rod into the titanium-containing slag. After the lowering is completed, the connecting rod and the coke are rotated. During the rotation, the reduction reaction between the titanium-containing blast furnace slag and the coke is completed. After the reduction reaction time reaches the test time, the coke is driven away from the titanium-containing slag using a drive device. After cooling the titanium-containing molten slag, a reduced titanium-containing blast furnace slag is obtained. The formation rates of TiC and TiN were determined based on the TiC and TiN content in the titanium-containing blast furnace slag.

[0013] In some embodiments, placing titanium-containing blast furnace slag into the crucible further includes: A predetermined mass of titanium-containing blast furnace slag is obtained based on the slag density of the titanium-containing blast furnace slag, so that the liquid level of the titanium-containing slag in the crucible reaches a predetermined height.

[0014] In some embodiments, the method of using a driving device to lower a connecting rod and coke connected to the connecting rod into titanium-containing molten slag further includes: The coke is immersed in the titanium-containing slag to a predetermined depth.

[0015] In some embodiments, determining the formation rates of TiC and TiN based on the TiC and TiN content in the titanium-containing blast furnace slag further includes: The reduced titanium-containing blast furnace slag was crushed using a vibratory crusher and then flattened and sampled to obtain the TiC and TiN contents. The rates of TiC and TiN were determined based on the reaction time, TiC content, and TiN content.

[0016] In some embodiments, the method further includes: Multiple test conditions are set, each of which includes test temperature, test time, coke diameter, and slag composition; The corresponding TiC and TiN generation rates were obtained based on each test condition.

[0017] The present invention has one of the following beneficial technical effects: By adding a rotation measure, the titanium carbonitride generated at the reaction interface between the slag and coke during the measurement process can be rapidly diffused into the slag, which is closer to the actual environment of the fluid dynamics of the slag inside the blast furnace, and the result of titanium carbonitride generation can better reflect the actual situation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of an apparatus for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag, provided for an embodiment of the present invention; Figure 2 A schematic diagram of the coke end connection provided for an embodiment of the present invention. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below with reference to specific examples and the accompanying drawings.

[0021] It should be noted that all uses of "first" and "second" in the embodiments of the present invention are for the purpose of distinguishing two entities or parameters with the same name but different names. It is clear that "first" and "second" are only for the convenience of expression and should not be construed as limiting the embodiments of the present invention. Subsequent embodiments will not explain this in detail.

[0022] According to one aspect of the present invention, embodiments of the present invention provide an apparatus for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag, such as... Figure 1 As shown, it includes: Reactor; Crucible 15 is disposed inside the reactor and is used to contain titanium-containing molten slag 14; The connecting rod (3, 5) is connected to coke 13 at one end and extends into the reactor so that the coke 13 is immersed in the titanium-containing slag. The driving device (1, 17, 18) is connected to the other end of the connecting rod (3, 5) and drives the connecting rod (3, 5) and the coke 13 to rotate, so as to complete the reduction reaction between the titanium-containing slag and the coke 13 during the rotation.

[0023] In some embodiments, the drive device (1, 17, 18) further includes a hydraulic lifter 18, a connector, and a drive motor 1; The drive motor 1 is connected to the other end of the connecting rod (3, 5) and is used to drive the connecting rod (3, 5) to rotate; the connector is used to connect the hydraulic lifter 18 and the drive motor 1; the hydraulic lifter 18 is used to drive the drive motor 1 and the connecting rod (3, 5) to move up and down.

[0024] In some embodiments, the connecting rods (3, 5) include a molybdenum rod 3 and a corundum sleeve 6; One end of the molybdenum rod 3 extends into the coke 13, and the other end is connected to the drive device; the corundum sleeve 6 is used to wrap the part of the molybdenum rod 3 exposed in the reactor.

[0025] Specifically, such as Figure 1 As shown, there is a movable drive motor 1 outside the heating furnace. The drive motor 1 is supported by a support rod 17 with a hydraulic lifter 18. Below the drive motor 1 is a connecting cap with an internal thread for rigid connection with a molybdenum rod 3 with a diameter ≥ 5 mm.

[0026] The inner diameter of the corundum sleeve 5 is slightly larger than the diameter of the molybdenum rod 3, and its length is greater than the position of the upper surface of the coke 13 inside the crucible 15 to the upper edge of the furnace cover 4. It mainly serves to isolate the molybdenum rod 3 from direct contact with air and prevent the molybdenum rod 3 from oxidation.

[0027] The height of the drive motor 1 is controlled by the hydraulic lifter 18 on the support rod 17 through a computer program and limit switches. The connecting cap 2 is driven by the drive motor 1 to rotate at a certain speed, which in turn drives the molybdenum rod 3, coke 13, and corundum sleeve 5 to rotate at the same speed, and the rotation speed is controlled by the computer program.

[0028] In some embodiments, the coke 13 includes a first borehole drilled downward from the center of the upper end face of the coke 13 and a second borehole drilled laterally from the side of the coke 13, the second borehole passing through the first borehole; one end of the molybdenum rod 3 is provided with a round hole, and one end of the molybdenum rod 3 extends into the first borehole; The connecting rod also includes a molybdenum wire 19, which is inserted into the second drill hole and passes through the circular hole of the molybdenum rod.

[0029] Specifically, such as Figure 2 As shown, the lower end of the molybdenum rod 3 has a circular hole with a diameter of 2.5 mm, which is connected to the square columnar coke 13 by a molybdenum wire 19 with a diameter of 2 mm as a pin.

[0030] If the shape of the square columnar coke is 25mm wide at the bottom, 25mm long at the bottom, and 40mm high, then a hole can be drilled from the center of the upper end face of the coke 13 downwards to obtain the first hole, which has a depth ≥5mm and a diameter slightly larger than the diameter of the molybdenum rod 3. Then, a second hole is drilled laterally at a depth of ≥5mm from the upper end face of the coke, with a diameter of 2.5mm. The second hole passes through the center of the first hole, so that the molybdenum wire 19 can pass laterally through the second hole and the round hole at the lower end of the molybdenum rod 3, thereby achieving the purpose of connecting the molybdenum rod 3 and the square columnar coke 13.

[0031] In some embodiments, the reactor includes: Furnace body 8; A corundum furnace tube 6 is disposed inside the furnace body 8 and is used to place the crucible 15. A silicon molybdenum heating rod 7 is disposed on the corundum furnace tube 6 and used for heating; Two temperature measuring thermocouples (9, 11) are respectively installed on the side wall and the center of the furnace body.

[0032] In some embodiments, the reactor further includes: The furnace cover 4 is located on the top of the furnace body 8 and has a fan-shaped opening and closing cover plate. When the cover plate is closed, it has a central hole. The connecting rod passes through the hole and is connected to the driving device.

[0033] In some embodiments, the reactor further includes: A crucible support base 12 is disposed inside the corundum furnace tube 6 to support the crucible 15.

[0034] In some embodiments, the reactor further includes: The protective gas inlet 10 is located at the bottom of the furnace body; Vent 16 is located at the top of the furnace body.

[0035] Specifically, such as Figure 1 As shown, the silicon molybdenum rod 7 can be heated to 1600℃. The temperature is monitored by two thermocouples (9, 11) located on the side wall and in the center, and controlled by a computer program for heating, maintaining constant temperature, and cooling, achieving a temperature control accuracy of ±1℃. The furnace body also has a water-cooled furnace cover 4 and an exhaust port 16 on the top, and a protective gas inlet 10 at the bottom. Above the water-cooled furnace cover 4 is a fan-shaped opening and closing cover plate, with an 8mm diameter hole in the center when closed. The internal corundum furnace tube 6 has a diameter ≥60mm, allowing a graphite crucible 15 with an inner diameter of 40mm and a wall thickness of 5mm to be placed inside.

[0036] In some embodiments, the present invention also provides a method for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag, comprising the steps of: Place titanium-containing blast furnace slag into the crucible; The graphite crucible is placed in the reaction furnace and heated to the test temperature so that the titanium-containing blast furnace slag is completely melted into titanium-containing molten slag. A driving device is used to lower the connecting rod and the coke connected to the connecting rod into the titanium-containing slag. After the lowering is completed, the connecting rod and the coke are rotated. During the rotation, the reduction reaction between the titanium-containing blast furnace slag and the coke is completed. After the reduction reaction time reaches the test time, the coke is driven away from the titanium-containing slag using a drive device. After cooling the titanium-containing molten slag, a reduced titanium-containing blast furnace slag is obtained. The formation rates of TiC and TiN were determined based on the TiC and TiN content in the titanium-containing blast furnace slag.

[0037] In some embodiments, placing titanium-containing blast furnace slag into the crucible further includes: A predetermined mass of titanium-containing blast furnace slag is obtained based on the slag density of the titanium-containing blast furnace slag, so that the liquid level of the titanium-containing slag in the crucible reaches a predetermined height.

[0038] In some embodiments, the method of using a driving device to lower a connecting rod and coke connected to the connecting rod into titanium-containing molten slag further includes: The coke is immersed in the titanium-containing slag to a predetermined depth.

[0039] In some embodiments, determining the formation rates of TiC and TiN based on the TiC and TiN content in the titanium-containing blast furnace slag further includes: The reduced titanium-containing blast furnace slag was crushed using a vibratory crusher and then flattened and sampled to obtain the TiC and TiN contents. The rates of TiC and TiN were determined based on the reaction time, TiC content, and TiN content.

[0040] Specifically, before the test, a certain mass of titanium-containing blast furnace slag is weighed according to the density of the measured titanium-containing blast furnace slag, so that the liquid level of the titanium-containing slag 14 in the graphite crucible 15 can reach 50mm. The titanium-containing blast furnace slag and the graphite crucible 15 are placed in the corundum tube 6 in the heating furnace 8. The graphite crucible 15 is supported by the hollow crucible support 12. The temperature is raised to the target temperature (e.g., 1500℃) at a certain heating rate (e.g., 10℃ / min). The temperature is held for 30 minutes to ensure that the titanium-containing blast furnace slag has been completely melted into titanium-containing slag. Argon gas is continuously purged for protection during the heating and subsequent testing processes.

[0041] Open the cover plate above the furnace cover 4, and lower the molybdenum rod 3, corundum sleeve 5, and coke 13, which are connected to the drive motor connecting cap 2, into the molten slag through the hydraulic lifter 18. By setting the limit height in advance, the square column coke 13 is immersed to a depth of 30mm into the titanium-containing molten slag 14. After the lowering is completed, close the cover plate above the furnace cover 4, and start the drive motor controlled by the computer program at the set speed (such as 6 rpm). During the rotation, the reduction reaction between the titanium-containing blast furnace slag and coke is completed. Thus, based on the slag-coke reaction and the diffusion of reaction products, the generation rate of titanium carbide and titanium nitride under the real reaction environment of the blast furnace is fully simulated.

[0042] After the isothermal reduction reaches the target isothermal time (e.g., 90 min), open the cover plate above the furnace cover 4, and use the hydraulic lifter 18 to lift the molybdenum rod 3, corundum sleeve 5, and coke 13 a certain distance, so that the lower end of coke 13 is removed from the surface of titanium-containing molten slag 14. Pause for 1 min for pre-cooling to prevent the corundum sleeve 5 from cracking due to excessive lifting. After 1 min, lift the coke outside the furnace cover 4, stop temperature control, and allow the molten slag to cool down rapidly at 20℃ / min. Argon gas is continuously circulated for protection during the cooling process.

[0043] After the sample cools to room temperature, the protective gas is stopped, the furnace lid 4 is opened, and the sample is removed along with the graphite crucible 15. The graphite crucible 15 is then broken to separate the reduced titanium-containing blast furnace slag from the crucible. The reduced titanium-containing blast furnace slag is then crushed to below -200 mesh (particle size below 0.074 mm) using a vibratory crusher. A flat-spread, reduced-size sample is taken for testing the TiC and TiN content in the slag. Based on the reaction time, the rate at which TiC and TiN are generated from the reaction between the titanium-containing slag and coke can be determined. In some embodiments, the method further includes: Multiple test conditions are set, each of which includes test temperature, test time, coke diameter, and slag composition; The corresponding TiC and TiN generation rates were obtained based on each test condition.

[0044] Specifically, reduction can be performed at a constant temperature for different times, or at a constant time at different temperatures. The slag composition or the surface area of ​​coke can be changed during reduction at constant temperature and time to obtain the TiC and TiN content generated by the reaction of titanium-containing slag with coke under different conditions. This allows for the calculation of the rate at which TiC and TiN are generated by the reaction of titanium-containing slag with coke under different conditions.

[0045] The proposed method, through special experimental apparatus and conditions, fixes the surface area and volume of the reaction between titanium-containing slag and coke, making the quantitative comparability of results from different measurement groups stronger. By adding a rotation measure, the titanium carbonitride generated at the slag-coke reaction interface during the measurement process can rapidly diffuse into the slag, more closely resembling the actual fluid dynamic environment of the slag inside the blast furnace, and the results of titanium carbonitride formation more accurately reflect the actual situation. Since the density of titanium carbonitride is usually greater than that of titanium-containing blast furnace slag, it will deposit; therefore, all samples are crushed and prepared before further processing. The method of scaling up and down the sampling allows for more accurate measurement of the relative content of titanium carbonitride. The measurement can further alter the diameter of the rectangular coke, thereby changing the reaction surface area. It can also determine the relationship between the titanium carbonitride formation rate and the reaction surface area. Furthermore, based on the average particle size and amount of coke actually used in the blast furnace, the total reaction area in the high-temperature zone that can undergo reduction with titanium-containing molten slag can be estimated. Combined with the residence time of the titanium-containing molten slag in the furnace, the total amount of titanium carbonitride generated can be estimated, enabling dynamic calculation and monitoring, and providing reference and guidance for blast furnace operation adjustments.

[0046] Example: Taking the production conditions of blast furnace A, which uses vanadium-titanium magnetite as the main raw material, as a reference, the average particle size of the coke used in blast furnace A is 52mm, and the TiO2 content of the resulting slag is greater than 20%. To reduce ironmaking costs, it is necessary to further increase the proportion of vanadium-titanium magnetite, which has a price advantage, in the furnace. During this process, the TiO2 content in the slag needs to be pushed towards 23.0%. In actual production trials, when the TiO2 content in the slag reached 22.50%, the smelting difficulty increased. The production site observed that as the TiO2 content in the slag increased, the amount of titanium carbonitride generated in the furnace increased, leading to poorer slag-iron fluidity, increased blast pressure, and a tendency for airflow fluctuations in the blast furnace. Through continuous sampling, analysis, and comparison of the slag during the tapping process, the average slag-iron temperature was 1460℃, and the average tapping time was 120 minutes. For every 0.5% increase in the TiO2 content in the slag, the titanium carbonitride content in the slag increased by 0.05%.

[0047] By employing the scheme proposed in this invention, slag-coke reduction experiments were conducted under the following conditions: constant temperature of 1460℃, reduction time of 120 min, and slag TiO2 content increasing from 20.0% to 24.0% in increments of 0.5%. Additionally, slag-coke reduction experiments were conducted under the following conditions: constant temperature of 1460℃, slag TiO2 content of 23.0%, and reduction times of 60 min, 90 min, 120 min, and 150 min. The results showed that a 0.5% increase in slag TiO2 content led to a 0.1% increase in slag titanium carbonitride content under the experimental conditions. However, a 30-min decrease in reduction time resulted in a 0.5% decrease in slag titanium carbonitride content under the experimental conditions. Therefore, the impact of reduction time on titanium carbonitride production was greater than the impact of increasing slag TiO2 content.

[0048] Therefore, it was suggested to increase the oxygen enrichment rate to improve blast furnace production efficiency and shorten the production and smelting cycle. At the production site, the oxygen enrichment rate was increased from 3.0% to 4.0%, resulting in a 4% increase in iron tapping efficiency, a 20-minute reduction in slag tapping time, and a significant improvement in blast furnace operation. Continuous sampling and testing showed that the TiO2 content in the slag successfully increased to 23.1% and remained at this level for over 10 days. Follow-up sampling and analysis of titanium carbonitride in the blast furnace slag showed that the titanium carbonitride content returned to its level before the increase in TiO2 content.

[0049] The above are exemplary embodiments disclosed in this invention. However, it should be noted that various changes and modifications can be made without departing from the scope of the embodiments of this invention as defined by the claims. The functions, steps, and / or actions of the methods according to the disclosed embodiments described herein do not need to be performed in any particular order. Furthermore, although the elements disclosed in the embodiments of this invention may be described or claimed individually, they may be understood as multiple unless explicitly limited to a singular number.

[0050] It should be understood that, as used herein, the singular form “a” is intended to include the plural form as well, unless the context clearly supports an exception. It should also be understood that, as used herein, “and / or” refers to any and all possible combinations of one or more of the associated listed items.

[0051] The embodiment numbers disclosed in the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0052] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention (including the claims) is limited to these examples. Within the framework of the invention, technical features of the above embodiments or different embodiments can be combined, and many other variations of different aspects of the invention exist, which are not provided in the details for the sake of brevity. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the protection scope of the invention.

Claims

1. An apparatus for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag, characterized in that, include: Reactor; A crucible, placed inside the reactor and used to contain titanium-containing molten slag; A connecting rod, one end of which is connected to coke, extends into the reactor so that the coke is immersed in the titanium-containing slag; A driving device is connected to the other end of the connecting rod and drives the connecting rod and the coke to rotate, so as to complete the reduction reaction between the titanium-containing slag and the coke during the rotation process.

2. The apparatus as claimed in claim 1, characterized in that, The drive device also includes a hydraulic lifter, a connector, and a drive motor; The drive motor is connected to the other end of the connecting rod and is used to drive the connecting rod to rotate; the connector is used to connect the hydraulic lifter and the drive motor; the hydraulic lifter is used to drive the drive motor and the connecting rod to move up and down.

3. The apparatus as described in claim 1, characterized in that, The connecting rod includes a molybdenum rod and a corundum sleeve; One end of the molybdenum rod extends into the coke, and the other end is connected to the drive device; the corundum sleeve is used to wrap the part of the molybdenum rod exposed in the reactor.

4. The apparatus as described in claim 3, characterized in that, The coke includes a first borehole drilled downward from the center of the upper end face of the coke and a second borehole drilled laterally from the side of the coke, the second borehole passing through the first borehole; one end of the molybdenum rod is provided with a round hole, and one end of the molybdenum rod extends into the first borehole; The connecting rod also includes a molybdenum wire, which is inserted into the second drill hole and passes through the circular hole of the molybdenum rod.

5. The apparatus as claimed in claim 1, characterized in that, The reactor includes: Furnace body; A furnace cover is located on the top of the furnace body and has a fan-shaped opening and closing cover plate. When the cover plate is closed, it has a central aperture. The connecting rod passes through the aperture and is connected to the driving device. A corundum furnace tube is disposed inside the furnace body and is used to place the crucible. A silicon-molybdenum heating rod is disposed in the corundum furnace tube and used for heating; Two temperature-measuring thermocouples are respectively installed on the side wall and the center of the furnace body.

6. A method for measuring the rate of TiC and TiN formation from coke and titanium-containing blast furnace slag, characterized in that, Perform the following steps using the apparatus as described in any one of claims 1-5: Place titanium-containing blast furnace slag into the crucible; The crucible is placed in the reactor and heated to the test temperature so that the titanium-containing blast furnace slag is completely melted into titanium-containing molten slag. A driving device is used to lower the connecting rod and the coke connected to the connecting rod into the titanium-containing slag. After the lowering is completed, the connecting rod and the coke are rotated. During the rotation, the reduction reaction between the titanium-containing blast furnace slag and the coke is completed. After the reduction reaction time reaches the test time, the coke is driven away from the titanium-containing slag using a drive device. After cooling the titanium-containing molten slag, a reduced titanium-containing blast furnace slag is obtained. The formation rates of TiC and TiN were determined based on the TiC and TiN content in the titanium-containing blast furnace slag.

7. The method as described in claim 6, characterized in that, Titanium-containing blast furnace slag is placed in the crucible, and the process further includes: A predetermined mass of titanium-containing blast furnace slag is obtained based on the slag density of the titanium-containing blast furnace slag, so that the liquid level of the titanium-containing slag in the crucible reaches a predetermined height.

8. The method as described in claim 6, characterized in that, The method further includes using a drive device to lower a connecting rod and the coke connected to the connecting rod into titanium-containing molten slag, and further comprising: The coke is immersed in the titanium-containing slag to a predetermined depth.

9. The method as described in claim 6, characterized in that, The determination of the formation rates of TiC and TiN based on the TiC and TiN content in the titanium-containing blast furnace slag further includes: The reduced titanium-containing blast furnace slag was crushed using a vibratory crusher and then flattened and sampled to obtain the TiC and TiN contents. The rates of TiC and TiN were determined based on the reaction time, TiC content, and TiN content.

10. The method as described in claim 1, characterized in that, Also includes: Multiple test conditions are set, each of which includes test temperature, test time, coke diameter, and slag composition; The corresponding TiC and TiN generation rates were obtained based on each test condition.

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