Continuous graphitization online measurement system and measurement method

Abstract

The invention discloses a continuous graphitization on-line measurement system and method, the continuous graphitization on-line measurement system comprises an on-line graphitization degree detection device and a control system, the on-line graphitization degree detection device comprises a mechanical arm, a gripper, a sampler, a stirrer, a standard sample storage, a detection container, a balance and a powder diffractometer, the output end of the mechanical arm is respectively connected with and drives the gripper, the sampler, the stirrer and the standard sample storage device to act, and the control system is respectively connected with the mechanical arm, the balance and the powder diffractometer, so that a graphite sample is grabbed by the sampler and then is put into the detection container to be mixed with a standard sample; and transferring to the powder diffractometer to detect the graphitization degree of the graphite sample. The performance of the continuous graphitized material can be detected on line in real time, key indexes of the graphitized material can be controlled in time, fluctuation of the indexes in a reasonable range is reduced, and the qualified rate of products is increased.

Description

Technical Field

[0001] The invention relates to the technical field of graphite processing, and in particular to a continuous graphitization online measurement system and a measurement method. Background Art

[0002] With the development of lithium battery material technology, continuous graphitization technology has become increasingly mature. It has a simple process, short production cycle, and low production cost, and has received great attention from the industry. It integrates multiple processes such as furnace loading, power supply, cooling, and unloading to achieve continuous production with a high degree of automation. At present, there are small-batch mass-produced products on the market, and the technical indicators have met customer requirements. However, the online detection technology accompanying the development of continuous graphitization has not made much progress, resulting in certain fluctuations in the technical indicators of continuous graphitization products. At present, it is temporarily impossible to adjust the process parameters in time to keep the product technical indicators within a reasonable range to improve the product qualification rate. In this context, the technology for online detection of continuous graphitization needs to be rapidly improved to keep up with the development of continuous graphitization technology. Summary of the invention

[0003] The object of the present invention is to provide a continuous graphitization online measurement system which can detect the performance of continuous graphitization materials online in real time, make the key indicators of the graphitization materials timely controllable, reduce the fluctuation of the indicators within a reasonable range, and improve the qualified rate of products.

[0004] Another object of the present invention is to provide a continuous graphitization online measurement method that can detect the performance of continuous graphitization materials online in real time, make key indicators of graphitization materials timely controllable, reduce the fluctuation of indicators within a reasonable range, and improve the qualified rate of products.

[0005] In order to achieve the above-mentioned purpose, the continuous graphitization online measurement system provided by the present invention includes an online graphitization degree detection device and a control system. The online graphitization degree detection device includes a mechanical arm, a gripper, a sampler, a stirrer, a standard sample storage, a detection container, a balance and a powder diffractometer. The output end of the mechanical arm is respectively connected to and drives the gripper, the sampler, the stirrer and the standard sample storage to operate. The control system is respectively connected to the mechanical arm, the balance and the powder diffractometer to grab the graphite sample through the sampler on the mechanical arm, and then the detection container is placed on the balance by the gripper and a certain amount of graphite sample is placed in the detection container and a certain amount of standard sample in the standard sample storage is placed in the detection container, and the stirrer is used to stir and mix the graphite sample and the standard sample in the detection container, and the detection container and its mixed material are transferred to the powder diffractometer, and the powder diffractometer detects the graphitization degree of the graphite sample.

[0006] Compared with the prior art, the present invention disassembles the action of testing the degree of graphitization by connecting the gripper, sampler, stirrer and standard sample storage to the mechanical arm respectively, realizes automated operation, and uses the detection container and balance to mix the graphite sample and the standard sample material in proportion for detection, thereby ensuring the accuracy of the result. In addition, by using the sampler to sample from the continuous graphitization production line, the degree of graphitization of the graphitized material can be detected online, so that the control system can be used to feed back the test results to the continuous graphitization production line online in real time, so as to help the continuous graphitization production line to adjust the process parameters in time, thereby ensuring that the product technical indicators fluctuate within a reasonable range and effectively improving the product qualification rate.

[0007] Preferably, the online graphitization degree detection device is arranged on a continuous graphitization production line, the continuous graphitization production line is provided with a sampling port, the sampler takes out the graphite sample through the sampling port; the control system is communicatively connected with the continuous graphitization production line. By providing the sampling port on the continuous graphitization production line, the sampler can obtain the graphite sample online in real time, thereby achieving the purpose of real-time detection and real-time feedback.

[0008] Preferably, the stirrer is provided with a sealing cover, and when the stirrer is inserted into the detection container, the sealing cover seals the stirrer, so that the mixed sample in the detection container can be prevented from splashing out when the stirrer stirs the mixed sample, thereby ensuring the accuracy of the weight of the mixed sample in the detection container and improving the accuracy of the detection.

[0009] Preferably, the detection container comprises a sample stage and a mixing cylinder detachable from the sample stage, and the mixing cylinder is disposed on the sample stage.

[0010] Specifically, the continuous graphitization online measurement system also includes an online graphitization particle size detection device, which is arranged on the continuous graphitization production line and electrically connected to the control system, and the online graphitization particle size detection device is connected to the sampling port to take out the graphite sample through the sampling port. By setting up the online graphitization particle size detection device, the online instant detection of the material size of the graphitized material on the continuous graphitization production line can be achieved, so as to further verify the performance of the graphitized material, and timely adjust the process parameters of the continuous graphitization production line, thereby ensuring that the product technical indicators fluctuate within a reasonable range and effectively improving the product qualification rate.

[0011] Specifically, the online graphitization particle size detection device includes a high-pressure nitrogen supply device, a control valve, a venturi tube, a dry laser particle size analyzer and an exhaust device; the output end of the nitrogen supply device is connected to the input end of the control valve, the output end of the control valve is connected to the input end of the venturi tube, the output end of the venturi tube is connected to the input end of the dry laser particle size analyzer, and the throat of the venturi tube is connected to the sampling port; the output end of the dry laser particle size analyzer is connected to the exhaust device, the continuous graphitization production line is provided with a return port, and the output end of the exhaust device is connected to the return port. By using the high-pressure nitrogen supply device to input high-pressure inert gas into the venturi tube, a negative pressure is generated at the throat of the venturi tube, so that the graphitized material in the sampling port can be taken out by using the negative pressure, so as to achieve the purpose of online rapid and continuous sampling. In addition, the output of high-pressure nitrogen is controlled by a control valve to control the number of samples, and the input and output ends of the dry laser particle size analyzer are formed into a high-pressure one-way transmission channel by using a vacuum device in conjunction with a high-pressure nitrogen supply device. Therefore, the graphitized material can be fully automated and continuously carried out from sampling input to detection and finally to the output return port. The whole process is simple and controllable, thus greatly meeting the requirements of automatic detection, online detection, and instant feedback.

[0012] Specifically, the online graphitization particle size detection device includes a sampling tube, which is connected between the throat of the venturi tube and the sampling port. By providing the sampling tube, the connection between the venturi tube and the sampling port can be made more convenient.

[0013] A continuous graphitization online measurement method includes the steps of sampling on a continuous graphitization production line and detecting the graphitization degree of the sample; specifically, the following steps are included: placing an empty detection container on a balance by using a gripper to peel off the surface; taking out a certain amount of graphite sample from a sampling port of the continuous graphitization production line by using a sampler, and placing the graphite sample in the detection container; placing a certain amount of standard sample in a standard sample storage device into the detection container by using a mechanical arm; stirring the graphite sample and the standard sample in the detection container by using a stirrer to form a mixture; transferring the detection container containing the mixture from the balance to a powder diffractometer by using the gripper; detecting the graphitization degree of the mixture in the detection container by using the powder diffractometer; and outputting an early warning prompt according to the graphitization degree detection result by using a control system.

[0014] Preferably, the standard sample is a silicon standard sample, and the mixing ratio of the silicon standard sample to the graphite sample is 1:3. The use of the silicon standard sample for calibration can ensure the accuracy of the detection structure.

[0015] Preferably, the measurement method further comprises the step of sampling on the continuous graphitization production line and detecting the graphitization particle size of the sample; specifically, the steps are as follows: connecting the throat of the venturi tube with the sampling port of the continuous graphitization production line; using a high-pressure nitrogen supply device to output high-pressure nitrogen to the venturi tube, so that the high-pressure nitrogen flows into the dry laser particle size analyzer; the high-speed flow of the high-pressure nitrogen causes a negative pressure to be generated at the throat of the venturi tube, thereby using the negative pressure to suck the graphite sample in the sampling port into the dry laser particle size analyzer; using the dry laser particle size analyzer to perform particle size detection on the graphite sample; using a control system to output an early warning prompt according to the graphitization particle size detection result; using an exhaust device to extract the graphite sample in the dry laser particle size analyzer, and allowing the graphite sample to flow back into the continuous graphitization production line from the return port of the continuous graphitization production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the continuous graphitization online measurement system of the present invention arranged on a continuous graphitization production line.

[0017] Figure 2 It is a structural diagram of the online graphitization degree detection device of the present invention.

[0018] Figure 3 It is a structural diagram of the detection container of the online graphitization degree detection device of the present invention.

[0019] Figure 4 It is a structural diagram of a powder diffractometer of the online graphitization degree detection device of the present invention.

[0020] Figure 5 It is a structural diagram of the online graphitization particle size detection device of the present invention.

[0021] Figure 6 The present invention is a flow chart of performing online graphitization degree detection using an online graphitization degree detection device.

[0022] Figure 7 The present invention is a flow chart of using an online graphitization degree detection device to perform online graphitization particle size detection. DETAILED DESCRIPTION

[0023] In order to explain the technical content, structural features and achieved effects of the present invention in detail, the following is a detailed description in conjunction with the implementation methods and the accompanying drawings.

[0024] like Figures 1 to 4As shown, the continuous graphitization online measurement system 100 disclosed in the present invention is arranged on a continuous graphitization production line 200, and includes an online graphitization degree detection device 1 and a control system 3. The online graphitization degree detection device 1 includes a mechanical arm 11, a gripper 12, a sampler 13, a stirrer 14, a standard sample storage 15, a detection container 16, a balance 17 and a powder diffractometer 18. The output end of the mechanical arm 11 is respectively connected to and drives the gripper 12, the sampler 13, the stirrer 14 and the standard sample storage 15 to move. The continuous graphitization production line 200 is provided with a sampling port 201, and the sampler 13 takes out a graphite sample through the sampling port 201; the control system 3 is connected to the continuous graphitization production line 200 in communication. By providing the sampling port 201 in the continuous graphitization production line 200, the sampler 13 can obtain the graphite sample online in real time, thereby achieving the purpose of real-time detection and real-time feedback. The control system 3 is connected to the mechanical arm 11, the balance 17 and the powder diffractometer 18 respectively, so as to grab the graphite sample through the sampler 13 on the mechanical arm 11, and then the detection container 16 is placed on the balance 17 by the gripper 12, and the graphite sample is placed in the detection container 16 and the standard sample in the standard sample storage 15 is placed in the detection container 16, and the graphite sample and the standard sample in the detection container 16 are stirred and mixed by the stirrer 14, and the detection container 16 and the mixed material are transferred to the powder diffractometer 18, and the powder diffractometer 18 detects the graphitization degree of the graphite sample. The powder diffractometer 18 is an X-ray powder diffractometer 18.

[0025] Please see again Figure 2 and Figure 3Specifically, the stirrer 14 is provided with a sealing cover 141, and when the stirrer 14 extends into the detection container 16, the sealing cover 141 seals the stirrer 14. In this way, the mixed sample in the detection container 16 can be prevented from splashing out when the stirrer 14 stirs the mixed sample, thereby ensuring the accuracy of the weight of the mixed sample in the detection container 16 and improving the accuracy of the detection. The detection container 16 includes a sample stage 161 and a mixing cylinder 162 that is detachable from the sample stage 161, and the mixing cylinder 162 is disposed on the sample stage 161. A circular groove 161a is provided in the middle of the sample stage 161, and a through hole 162a is provided in the middle of the mixing cylinder 162, which passes through both ends. The diameter of the through hole 162a is the same as that of the groove 161a, so that when the mixing cylinder 162 is installed on the sample stage 161, one end of the through hole 162a is coaxially aligned with the groove 161a, and the sealing cover 141 covers the other end of the through hole of the mixing cylinder 162, so that the mixing cylinder 162 can prevent the sample from splashing out during stirring, and can quickly leave the sample stage 161 during detection. Of course, the detection container 16 can also include only the sample stage 161, and the sealing cover 141 does not need to be provided on the stirrer 14. During stirring, the stirrer 14 directly stirs gently on the groove 161a to avoid splashing.

[0026] Please see again Figure 1 and Figure 5 The continuous graphitization online measurement system 100 also includes an online particle size detection device 2, which is arranged on the continuous graphitization production line 200 and electrically connected to the control system 3, and the online particle size detection device 2 is connected to another sampling port 202 to take out a graphite sample through the sampling port 202. By setting the online particle size detection device 2, the online instant detection of the size of the graphitized material on the continuous graphitization production line 200 can be achieved, so that the performance of the graphitized material can be further verified, and the process parameters of the continuous graphitization production line 200 can be adjusted in time, thereby ensuring that the product technical indicators fluctuate within a reasonable range and effectively improving the qualified rate of the product.

[0027] Please see again Figure 5The online particle size detection device 2 includes a high-pressure nitrogen supply device 21, a control valve 22, a venturi tube 23, a dry laser particle size analyzer 24 and an exhaust device 25; the exhaust device 25 is an axial flow fan. The output end of the nitrogen supply device 21 is connected to the input end of the control valve 22, the output end of the control valve 22 is connected to the input end of the venturi tube 23, the output end of the venturi tube 23 is connected to the input end of the dry laser particle size analyzer 24, and the throat of the venturi tube 23 is connected to the sampling port 202; the output end of the dry laser particle size analyzer 24 is connected to the exhaust device 25, and the continuous graphitization production line 200 is provided with a return port 203, and the output end of the exhaust device 25 is connected to the return port 203 through a pipeline 251. By using the high-pressure nitrogen supply device 21 to input high-pressure inert gas into the venturi tube 23, negative pressure is generated at the throat of the venturi tube 23, so that the graphitized material in the sampling port 202 can be taken out by using the negative pressure, so as to achieve the purpose of online rapid and continuous sampling. In addition, the output of high-pressure nitrogen is controlled by the control valve 22, so as to control the number of samples, and the input and output ends of the dry laser particle size analyzer 24 are formed into a high-pressure one-way transmission channel by using the exhaust device 25 in conjunction with the high-pressure nitrogen supply device 21. Therefore, the graphitized material can be fully automated and continuously carried out from sampling input to detection and finally to the output return port 203. The whole process is simple and controllable, thus greatly meeting the requirements of automatic detection, online detection and instant feedback.

[0028] Please see again Figure 5 Specifically, the online particle size detection device 2 includes a sampling tube 26, and the sampling tube 26 is connected between the throat of the venturi tube 23 and the sampling port 202. By providing the sampling tube 26, the connection between the venturi tube 23 and the sampling port 202 can be made more convenient.

[0029] In conjunction with the above drawings and refer to Figure 6 The continuous graphitization online measurement method of the present invention comprises the steps of taking samples on the continuous graphitization production line 200 and detecting the graphitization degree of the samples by using the online graphitization degree detection device 1; specifically, the steps include:

[0030] Step S11, using the gripper 12 to place the empty test container 16 on the balance 17 for taring;

[0031] Step S12, taking out a graphite sample from the sampling port 201 of the continuous graphitization production line 200 by using the sampler 13, and placing the graphite sample in the detection container 16; the detection container 16 can be a sample table 161 alone, or a combination of the sample table 161 and the mixing cylinder 162.

[0032] Step S13, the standard sample in the standard sample storage 15 is placed into the detection container 16 by the mechanical arm 11; specifically, the standard sample is a silicon standard sample, and the mixing ratio of the silicon standard sample to the graphite sample is 1:3. Calibration with a silicon standard sample can ensure the accuracy of the detection structure.

[0033] Step S14, using the stirrer 14 to stir the graphite sample and the standard sample in the detection container 16 to form a mixture;

[0034] Step S15, using the gripper 12 to transfer the detection container 16 containing the mixture from the balance 17 to the powder diffractometer 18;

[0035] Step S16, using the powder diffractometer 18 to detect the degree of graphitization of the mixture in the detection container 16;

[0036] Step S17 , using the control system 3 to output an early warning prompt according to the graphitization degree detection result, and adjusting the process of the continuous graphitization production line 200 .

[0037] In conjunction with the above drawings and refer to Figure 7 The continuous graphitization online measurement method further includes a detection step of sampling and detecting the graphitization particle size of the sample on the continuous graphitization production line 200 using an online graphitization particle size detection device; specifically, the method includes the following steps:

[0038] Step S21, connecting the throat of the venturi tube 23 to the sampling port 202 of the continuous graphitization production line 200;

[0039] Step S22, using the high-pressure nitrogen supply device 21 to output high-pressure nitrogen to the venturi tube 23, so that the high-pressure nitrogen flows to the dry laser particle size analyzer 24; the high-speed flow of the high-pressure nitrogen causes a negative pressure to be generated at the throat of the venturi tube 23, so that the graphite sample in the sampling port 202 is sucked into the dry laser particle size analyzer 24 by the negative pressure;

[0040] Step S23, using the dry laser particle size analyzer 24 to detect the particle size of the graphite sample;

[0041] Step S24 , using the control system 3 to output an early warning prompt according to the graphitization particle size detection result, and adjusting the process of the continuous graphitization production line 200 .

[0042] Step S25 , extracting the graphite sample in the dry laser particle size analyzer 24 by using the exhaust device 25 , and making the graphite sample flow back into the continuous graphitization production line 200 from the return port 203 of the continuous graphitization production line 200 .

[0043] In summary and in combination with the above drawings, the working principle of the continuous graphitization online measurement system 100 of the present invention is specifically described as follows:

[0044] First, the material is graphitized using a continuous graphitization production line 200. With petroleum coke as the raw material, the petroleum coke is first roughly crushed into particles with a diameter of 10-50 mm. The material with a diameter of 10-50 mm is further crushed into particles with a diameter of 0.5-20 mm required for batching by crushing equipment such as a jaw crusher, a hammer crusher, and a roller crusher. The carbon raw material is ground into powdery small particles with Dv50=15um by Raymond mill, ball mill and other equipment, and the graphite raw material is mixed with asphalt in different proportions, with the mixing ratio of 100:15 to complete the granulation process. Then, the carbon paste formed by graphite and asphalt is formed into particles of a certain shape by molding to complete the shaping process. The shaped particles are loaded into a specially designed heating furnace for high-temperature heat treatment to carbonize the asphalt in the green body. The asphalt coke formed by asphalt carbon consolidates the carbon aggregate and powder particles together. Then, the carbonized material is sent to a continuous graphitization furnace at a speed of 500kg / h. The graphitized material becomes artificial graphite. The artificial graphite is cooled to below 150 degrees by a cooling device in a nitrogen protective atmosphere, and then it is transported into a grinder through a pipeline for pulverization. The pulverized sample circulates on the production line. Before the next process, online graphitization degree test and particle size test are carried out at this time.

[0045] The control system 3 center is started to complete the control connection with the X-ray powder diffractometer 18 (XRD) and the dry laser particle size analyzer 24. The control system 3 sends a signal to make the gripper 12 on the mechanical arm 11 place the sample table 161 on the balance 17, and then the gripper 12 places the mixing cylinder 162 on the sample table 161. After completing the above actions, the mechanical arm 11 feeds back a signal to the control system 3, and the control system 3 controls the balance 17 to perform a zeroing operation. Then, through the sampler 13 on the mechanical arm 11, about 5g of graphite sample is taken from the continuous graphitization production line 200 through the sampling port 202, and 3g of graphite is slowly added to the sample table 161 on the balance 17, with a weight range of 3±0.1g; when the sample amount reaches the specified sample amount, the balance 17 is reset. After that, the standard sample storage 15 on the robot arm 11 is transferred to the top of the sample stage 161 on the balance 17, and the silicon standard sample in the standard sample storage 15 is slowly added to the sample stage 161, and 1g of the silicon standard sample is added, and the weight range is 1±0.1g. When the sample amount on the sample stage 161 reaches the specified sample amount, the stirrer 14 is rotated to the mixing cylinder 162, and the stirrer 14 is slowly inserted into the mixing cylinder 162, and the sealing cover 141 covers the mixing cylinder 162, and then the stirrer 14 is started, and the stirring speed is 1000r / min, and the sample on the sample stage 161 is stirred for 5min, so that the graphite sample and the silicon standard sample are evenly mixed. Then withdraw the agitator 14, use the gripper 12 to separate the sample table 161 and the mixing barrel 162, leaving only the sample table 161 on the balance 17, and then transfer the sample table 161 and the mixed sample therein to the X-ray powder diffractometer 18 (XRD) through the gripper 12. After the sensor on the X-ray powder diffractometer 18 receives the signal, the X-ray powder diffractometer 18 (XRD) is started to perform the measurement. After waiting for the measurement to be completed, check the test results of the X-ray powder diffractometer 18 (XRD). If the test results are within the range of 90-95% of the graphitization degree specified for this product, the subsequent measurement work is automatically performed every 30 minutes. If the test results are not within the above range, the control system 3 is fed back to the continuous graphitization production line 200 to adjust the process of the continuous graphitization production line 200.

[0046] In addition, the signal sent by the control system 3 starts the high-pressure nitrogen supply device 21, the control valve 22 and the dry laser particle size analyzer 24, and the high-pressure nitrogen flows to the venturi tube 23. At this time, negative pressure is generated at the throat of the venturi tube 23, so that the graphite is taken out of the production line through the sampling tube 26 and the sampling port 202, forming a mixture of graphite sample and nitrogen, and the mixture enters the dry laser particle size analyzer 24. The control system 3 adjusts the opening and closing degree of the control valve 22 on the dry laser particle size analyzer 24 according to the degree of shading, so that the shading can be stabilized within the range of 3-7%, and the stabilization time is greater than 0.5S. At this time, the dry laser particle size analyzer 24 starts the measurement program to detect the particle size of the graphite sample (the graphite sample does not need to stay when it is transported to the dry laser particle size analyzer 24, and the dry laser particle size analyzer 24 can detect the flowing graphite sample). After the graphite sample is tested, the negative pressure generated by the exhaust device 25 is used to return the graphite sample to the continuous graphitization production line 200 through the return port 203, and the Dv10, Dv50, Dv90, and Dv99 data results are measured and output. After the test, the particle size Dv50 is confirmed, and it is controlled according to the required Dv50 = 10um ± 1.5um, and monitored every 10 minutes to ensure that the size of the artificial graphite particles is within the required range. If the test result is not within the above range, it is fed back to the continuous graphitization production line 200 through the control system 3 to adjust the process of the continuous graphitization production line 200.

[0047] Compared with the prior art, the present invention disassembles the action of testing the degree of graphitization by connecting the gripper 12, the sampler 13, the agitator 14 and the standard sample storage 15 to the mechanical arm 11 respectively, and realizes automated operation. At the same time, the graphite sample and the standard sample material can be mixed in proportion for testing by using the detection container 16 and the balance 17 to ensure the accuracy of the result. In addition, by using the sampler 13 to sample from the continuous graphitization production line 200, the degree of graphitization of the graphitized material can be tested online, so that the control system 3 can be used to feed back the test results to the continuous graphitization production line 200 online in real time, so as to help the continuous graphitization production line 200 to adjust the process parameters in time, thereby ensuring that the product technical indicators fluctuate within a reasonable range and effectively improving the product qualification rate. In addition, by setting up an online graphitization particle size detection device 2, the graphitized material can be fully automated and continuously carried out from sampling input to detection and finally to output. The whole process is simple and controllable. Therefore, it greatly meets the requirements of automatic detection, online detection, and instant feedback, further ensuring that the product technical indicators fluctuate within a reasonable range, and effectively improving the product qualification rate.

[0048] The structures and detection principles of the X-ray powder diffractometer 18 and the dry laser particle size analyzer 24 involved in the continuous graphitization online measurement system 100 of the present invention are well known to ordinary technicians in the field and will not be described in detail here.

[0049] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. A continuous graphitization online measurement system, characterized in that: The invention comprises an online graphitization degree detection device and a control system. The online graphitization degree detection device comprises a mechanical arm, a gripper, a sampler, a stirrer, a standard sample storage device, a detection container, a balance and a powder diffractometer. The output end of the mechanical arm is respectively connected to and drives the gripper, the sampler, the stirrer and the standard sample storage device to operate. The control system is respectively connected to the mechanical arm, the balance and the powder diffractometer to grab a graphite sample through the sampler on the mechanical arm, and then the detection container is placed on the balance by the gripper and the graphite sample is placed in the detection container and the standard sample in the standard sample storage device is placed in the detection container, and the stirrer is used to stir and mix the graphite sample and the standard sample in the detection container, and the detection container and its mixed material are transferred to the powder diffractometer. The powder diffractometer detects the graphitization degree of the graphite sample.

2. The continuous graphitization online measurement system according to claim 1, characterized in that: The online graphitization degree detection device is arranged on a continuous graphitization production line. The continuous graphitization production line is provided with a sampling port, and the sampler takes out a graphite sample through the sampling port. The control system is communicatively connected with the continuous graphitization production line.

3. The continuous graphitization online measurement system according to claim 1, characterized in that: The stirrer is provided with a sealing cover, and when the stirrer extends into the detection container, the sealing cover seals the stirrer.

4. The continuous graphitization online measurement system according to claim 1, characterized in that: The detection container comprises a sample stage and a mixing cylinder which is detachable from the sample stage, and the mixing cylinder is arranged on the sample stage.

5. The continuous graphitization online measurement system according to claim 2, characterized in that: The continuous graphitization online measurement system also includes an online graphitization particle size detection device, which is arranged on the continuous graphitization production line and electrically connected to the control system, and the online graphitization particle size detection device is connected to the sampling port to take out the graphite sample through the sampling port.

6. The continuous graphitization online measurement system according to claim 5, characterized in that: The online graphitization particle size detection device comprises a high-pressure nitrogen supply device, a control valve, a venturi tube, a dry laser particle size analyzer and an exhaust device; the output end of the nitrogen supply device is connected to the input end of the control valve, the output end of the control valve is connected to the input end of the venturi tube, the output end of the venturi tube is connected to the input end of the dry laser particle size analyzer, and the throat of the venturi tube is connected to the sampling port; the output end of the dry laser particle size analyzer is connected to the exhaust device, the continuous graphitization production line is provided with a return port, and the output end of the exhaust device is connected to the return port.

7. The continuous graphitization online measurement system according to claim 6, characterized in that: The on-line graphitization particle size detection device comprises a sampling tube, and the sampling tube is connected between the throat of the venturi tube and the sampling port.

8. A continuous graphitization online measurement method, characterized in that: The method comprises the steps of taking samples on a continuous graphitization production line and detecting the graphitization degree of the samples; Specifically, the following steps are included: Use the gripper to place the empty test container on the balance and tar it; Taking out a graphite sample from a sampling port of the continuous graphitization production line by using a sampler, and placing the graphite sample in the detection container; Putting the standard sample in the standard sample storage into the detection container by a mechanical arm; Using a stirrer to stir the graphite sample and the standard sample in the detection container to form a mixture; Using the gripper to transfer the test container containing the mixture from the balance to the powder diffractometer; Using the powder diffractometer to detect the degree of graphitization of the mixture in the detection container; The control system is used to output early warning prompts according to the graphitization degree detection results.

9. The continuous graphitization online measurement method according to claim 8, characterized in that: The standard sample is a silicon standard sample, and the mixing ratio of the silicon standard sample to the graphite sample is 1:

3.

10. The continuous graphitization online measurement method according to claim 8, characterized in that: The measuring method further comprises the steps of sampling on a continuous graphitization production line and detecting the graphitization particle size of the sample; Specifically, the following steps are included: Connecting the throat of the venturi tube to the sampling port of the continuous graphitization production line; A high-pressure nitrogen supply device is used to output high-pressure nitrogen to the venturi tube, so that the high-pressure nitrogen flows toward the dry laser particle size analyzer; the high-speed flow of the high-pressure nitrogen generates a negative pressure at the throat of the venturi tube, thereby using the negative pressure to suck the graphite sample in the sampling port into the dry laser particle size analyzer; Using the dry laser particle size analyzer to measure the particle size of the graphite sample; Using the control system to output early warning prompts based on the graphitization particle size detection results; The graphite sample in the dry laser particle size analyzer is extracted by using an exhaust device, and the graphite sample is made to flow back into the continuous graphitization production line from a return port of the continuous graphitization production line.

Images