Component analysis system for low-heat cement clinker

Abstract

The invention relates to a component analysis system for low-heat cement clinker, which comprises a sampling circulating pipeline, a powder interceptor, a powder collecting funnel, a powder extruder and a spectral analysis terminal, the two ends of the sampling circulating pipeline are connected with a homogenizing and mixing unit to form a loop, and the sampling circulating pipeline comprises a horizontal collecting section; the intercepting part of the powder interceptor can extend into the horizontal collecting section, and the powder collecting funnel is located below the powder interceptor; the powder extruder is connected with the output end of the powder collecting funnel and used for extruding powder flowing out of the powder collecting funnel to obtain an analysis material block, and the spectral analysis terminal is arranged in the powder extruder and faces the analysis material block. According to the component analysis system for the low-heat cement clinker, synchronous sampling and synchronous analysis can be carried out in the component proportion process of the low-heat cement clinker, the analysis result can be used for knowing component proportion adjustment, and the final product quality can be improved.

Description

Technical Field

[0001] The present application relates to the technical field, and in particular to a component analysis system for low-heat cement clinker. Background Art

[0002] The low-heat cement clinker reduces the high-heat-release minerals (such as C3S and C3A) and increases the low-heat-release minerals (such as C2S) by adjusting the mineral composition, thereby reducing the heat of hydration. The low-heat cement clinker reduces the heat of hydration by optimizing the mineral composition and is suitable for mass concrete projects. An obvious advantage of the low-heat cement clinker is its low heat of hydration, releasing less heat during the solidification process, which can effectively reduce or even avoid the internal stress cracking problem caused by temperature rise.

[0003] Currently, during the production process of low-heat cement clinker, the material composition is generally detected during the transportation stage before calcination. This method can ensure the accuracy of the proportion of each component to a certain extent, but there are also certain uncertainties. The main reason is that there may be inconsistencies between the pre-detection results and the actual results after calcination, and the use of the component proportion will directly affect the subsequent use.

[0004] A new adjustment method is to pre-grind the low-heat cement clinker and then adjust the component ratio according to the actual detection results. This method can ensure the precise proportion of each component, but there is a certain lag in the sampling and testing process of the powder. If synchronous sampling is used during the use process, the powder scattered inside the equipment cannot be directly used for analysis. Summary of the Invention

[0005] The present application provides a component analysis system for low-heat cement clinker, which can perform synchronous sampling and synchronous analysis during the component ratio process of the low-heat cement clinker. The obtained analysis results can be used to guide the adjustment of the component ratio, which helps to improve the final product quality.

[0006] The above object of the present application is achieved through the following technical solutions:

[0007] The present application provides a component analysis system for low-heat cement clinker, including:

[0008] A sampling circulation pipeline, both ends of which are connected to the homogenization and mixing unit to form a loop; the sampling circulation pipeline includes a horizontal collection section;

[0009] A powder interceptor, which is arranged on the horizontal collection section, and the intercepting part of the powder interceptor can extend into the inside of the horizontal collection section;

[0010] A powder collection funnel, which is arranged on the horizontal collection section, and the powder collection funnel is located below the powder interceptor;

[0011] A powder extruder, connected to the output end of the powder collection funnel, is used to extrude the powder flowing out of the powder collection funnel to obtain an analysis block;

[0012] A spectral analysis terminal, which is arranged inside the powder extruder and faces the analysis block.

[0013] In a possible implementation manner of the present application, the powder interceptor includes:

[0014] A sampling chamber, arranged on the horizontal collection section and communicating with the horizontal collection section;

[0015] A linear telescopic unit, arranged on the sampling chamber;

[0016] A sampling plate, arranged at the telescopic end of the linear telescopic unit and located inside the sampling chamber;

[0017] A sampling interception plate, arranged on the sampling plate;

[0018] Wherein, in the air flow direction inside the sampling chamber, multiple rows of sampling interception plates are arranged, and the sampling interception plates in adjacent rows are staggered.

[0019] In a possible implementation manner of the present application, the first end of the sampling interception plate is fixed on the sampling plate, and the second end of the sampling interception plate inclines in the same direction as the air flow direction inside the sampling chamber.

[0020] In a possible implementation manner of the present application, the powder extruder includes:

[0021] An extrusion chamber, connected to the output end of the powder collection funnel;

[0022] Two extrusion belt modules, horizontally arranged inside the extrusion chamber, there is a gap between the two extrusion belt modules, and the lengths of the two extrusion belt modules are not equal;

[0023] Wherein, the spectral analysis terminal is located at the extrusion belt module with a shorter length and faces the extrusion belt module with a longer length.

[0024] In a possible implementation manner of the present application, the width of the extrusion belt module is greater than the width of the output end of the powder collection funnel.

[0025] In a possible implementation manner of the present application, two groups of sealing members are symmetrically arranged inside the extrusion chamber, and the output end of the powder collection funnel is located between the two groups of sealing members;

[0026] In the direction away from the output end of the powder collection funnel, the size of the sealing member in the vertical direction tends to decrease and extends into the gap between the two extrusion belt modules.

[0027] In a possible implementation manner of the present application, it further includes a negative pressure suction module provided on the extrusion bin, and the input end of the negative pressure suction module faces the extrusion belt module with a longer length.

[0028] In a possible implementation manner of the present application, the negative pressure suction module has two input ends;

[0029] The first input end of the negative pressure suction module faces the extrusion belt module with a longer length, and the second input end of the negative pressure suction module faces the side wall of the extrusion bin.

[0030] In a possible implementation manner of the present application, the spectral analysis terminal includes:

[0031] A moving linear module provided inside the powder extruder;

[0032] A laser ranging sensor and a spectral analyzer, both provided on the moving linear module, and the laser ranging sensor is used to detect and analyze the thickness of the analyzed material block.

[0033] In the moving direction of the analyzed material block, the laser ranging sensor is located in front of the spectral analyzer.

[0034] The beneficial effects of the present application are:

[0035] The component analysis system for low-heat cement clinker disclosed in the present application can perform synchronous sampling and synchronous analysis during the component proportioning process of low-heat cement clinker. The obtained analysis results can be used to guide the adjustment of the component proportion. At the same time, the analysis results can also be used to guide whether the mixing process continues, so that the mixing process can be stopped in time after the components are mixed, obtaining better economic benefits. Description of the Drawings

[0036] Figure 1 It is a schematic diagram of the use of a component analysis system for low-heat cement clinker provided by the present application.

[0037] Figure 2 It is a structural schematic diagram of a component analysis system for low-heat cement clinker provided by the present application.

[0038] Figure 3 It is an internal structural schematic diagram of a component analysis system for low-heat cement clinker provided by the present application.

[0039] Figure 4 It is a distribution schematic diagram of the sampling intercepting plates on a sampling plate provided by the present application.

[0040] Figure 5 It is a distribution schematic diagram of the sampling points on an analyzed material block provided by the present application.

[0041] Figure 6This is a schematic diagram of the principle for screening sampling points on an analysis sample block provided by this application.

[0042] In the figure, 1 is the sampling circulation pipeline, 2 is the powder interceptor, 3 is the powder collection funnel, 4 is the powder extruder, 5 is the spectral analysis terminal, 11 is the horizontal collection section, 21 is the sampling chamber, 22 is the linear telescopic unit, 23 is the sampling plate, 24 is the sampling interception plate, 41 is the extrusion chamber, 42 is the extrusion belt module, 43 is the sealing member, 44 is the negative pressure suction module, 51 is the moving linear module, 52 is the laser distance sensor, and 53 is the spectral analyzer. Specific embodiments

[0043] The following further elaborates on the technical solutions in this application in conjunction with the accompanying drawings.

[0044] This application discloses a component analysis system for low-heat cement clinker. Please refer to Figures 1 to 3 , in some examples, the component analysis system for low-heat cement clinker disclosed in this application includes a sampling circulation pipeline 1, a powder interceptor 2, a powder collection funnel 3, a powder extruder 4, and a spectral analysis terminal 5. Both ends of the sampling circulation pipeline 1 are connected to the homogenization and mixing unit and form a loop. Here, the homogenization and mixing unit refers to the device that drives the mixing of cement clinker. The power source of this device is wind force, and through the wind force, the cement clinker is driven to complete the uniform distribution of each component in the internal space of the device.

[0045] The sampling circulation pipeline 1 is connected to the homogenization and mixing unit and forms a loop for sampling the powder inside the homogenization and mixing unit.

[0046] The sampling circulation pipeline 1 includes a horizontal collection section 11, which supplies the powder interceptor 2. The powder interceptor 2 can obtain a part of the powder as a sample from the powder passing through the horizontal collection section 11.

[0047] The reason for adding the horizontal collection section 11 is that the homogenization and mixing unit generally uses a structure deployed in the vertical direction. However, in order to collect the flowing powder, it is necessary to use the powder interceptor 2 to reduce the flow rate of a part of the powder, and then this part of the powder enters the powder collection funnel 3 under the action of gravity. This method needs to be realized by means of the horizontal collection section 11.

[0048] The powder collection funnel 3 is fixed on the horizontal collection section 11 and is located below the powder interceptor 2. Its function is to collect the powder intercepted by the powder interceptor 2. This part of the powder will be conveyed to the powder extruder 4, and the powder extruder 4 will make it into an analysis sample block, and then the spectral analysis terminal 5 will analyze the analysis sample block.

[0049] As mentioned above, the homogenizing and mixing unit uses flowing air as the power source to drive the cement clinker to complete mixing. One purpose of this process is to enable the components to be fully mixed, and at the same time, it can also make the newly added component powders evenly distributed.

[0050] The powder inside the homogenizing and mixing unit is in a continuous flowing state, so direct sampling cannot be carried out, and the spectral analysis terminal 5 cannot analyze this kind of powder either. The main reason is that this kind of powder contains a large amount of gas, which is extremely likely to cause inaccurate analysis results.

[0051] In this application, first, the powder interceptor 2 intercepts the flowing powder, then makes it into an analysis block, and finally analyzes the analysis block. The above process is automated and continuous, and accurate component proportion results and mixing effect results can be obtained. It can not only guide the precise addition of single components but also clarify the stop time, achieving a balance between product quality and economic benefits.

[0052] Please refer to Figure 3 , the powder interceptor 2 includes a sampling chamber 21, a linear telescopic unit 22, a sampling plate 23, and a sampling interception plate 24. The sampling chamber 21 is fixed on the horizontal collection section 11 and communicates with the horizontal collection section 11. The linear telescopic unit 22 is fixedly installed on the sampling chamber 21, and the sampling plate 23 is fixed on the telescopic end of the linear telescopic unit 22 and is located inside the sampling chamber 21.

[0053] The number of sampling interception plates 24 is multiple, and these sampling interception plates 24 are all fixed on the sampling plate 23. The specific deployment method is: in the air flow direction inside the sampling chamber 21, multiple rows of sampling interception plates 24 are arranged, and the sampling interception plates 24 in adjacent rows are staggered, as Figure 4 shown.

[0054] In some possible implementation manners, the cross-sectional shape of the sampling interception plate 24 is V-shaped.

[0055] After the flowing powder impacts the sampling interception plate 24, its flowing speed will decrease. At this time, this part of the powder with a decreased flowing speed will slide along the sampling interception plate 24 and then fall into the powder collection funnel 3 under the action of gravity.

[0056] The function of using the linear telescopic unit 22 is that the linear telescopic unit 22 can drive the sampling plate 23 and the sampling interception plate 24 to enter and leave the sampling chamber 21. In this way, it can be realized that the sampling plate 23 and the sampling interception plate 24 only enter the sampling chamber 21 during sampling, avoiding the influence of the powder intercepted during non-sampling time periods on the component ratio of the subsequent analysis block and resulting in deviation of the analysis results.

[0057] In some possible implementation manners, a part of the sampling intercepting plate 24 can extend into the interior of the powder collecting funnel 3.

[0058] In some possible implementation manners, a flap valve is installed on the powder collecting funnel 3, and the flap valve is only opened during the sampling time period.

[0059] In some possible implementation manners, the first end of the sampling intercepting plate 24 is fixed on the sampling plate 23, and the second end of the sampling intercepting plate 24 inclines in the same direction as the air flow direction in the sampling chamber 21, so as to guide the powder intercepted by the sampling intercepting plate 24 into the powder collecting funnel 3.

[0060] In some examples, please refer to Figure 3 , the powder extruder 4 includes an extrusion chamber 41 and two extrusion belt modules 42. The extrusion chamber 41 is connected to the output end of the powder collecting funnel 3, and the two extrusion belt modules 42 are horizontally arranged in the extrusion chamber 41.

[0061] There is a gap between the two extrusion belt modules 42 because the two extrusion belt modules 42 need to pressurize the powder in the powder collecting funnel 3 to obtain the analysis material block.

[0062] At the same time, it is required that the lengths of the two extrusion belt modules 42 are not equal to leave a working area for the spectral analysis terminal 5. At this time, the spectral analysis terminal 5 is located at the extrusion belt module 42 with a shorter length and faces the extrusion belt module 42 with a longer length.

[0063] In some possible implementation manners, the width of the extrusion belt module 42 is greater than the width of the output end of the powder collecting funnel 3, so as to prevent the powder in the powder collecting funnel 3 from drifting into the extrusion chamber 41.

[0064] Furthermore, two groups of blocking members 43 are symmetrically arranged in the extrusion chamber 41. The output end of the powder collecting funnel 3 is located between the two groups of blocking members 43. At the same time, in the direction away from the output end of the powder collecting funnel 3, the size of the blocking member 43 in the vertical direction tends to decrease and extends into the gap between the two extrusion belt modules 42.

[0065] The function of the blocking member 43 is to further seal the gap between the extrusion belt module 42 and the inner wall of the extrusion chamber 41 near the powder collecting funnel 3 to prevent the powder in the powder collecting funnel 3 from drifting into the extrusion chamber 41.

[0066] In some examples, a negative pressure suction module 44 is added to the extrusion chamber 41. The input end of the negative pressure suction module 44 faces the extrusion belt module 42 with a longer length. The function of the negative pressure suction module 44 is to transfer the analysis material block on the extrusion belt module 42 with a longer length. Through the suction method, the analysis material block can be quickly transferred.

[0067] The negative pressure suction module 44 includes a fan and a pipeline. The fan generates flowing air in the pipeline, and a negative pressure is generated at one end of the pipeline located in the extrusion bin 41. At this time, with a suitable collection hood, the transfer of powder and powder sample blocks can be achieved.

[0068] Of course, an electric scraper can also be added to the extrusion belt module 42. The scraper further removes the powder residue on the extrusion belt module 42 with a longer transfer length through mechanical friction. An electric scraper can also be added to the extrusion belt module 42 with a shorter length to remove the powder residue.

[0069] In some possible implementation manners, the negative pressure suction module 44 has two input ends. The first input end of the negative pressure suction module 44 faces the extrusion belt module 42 with a longer length, and the second input end of the negative pressure suction module 44 faces the side wall of the extrusion bin 41.

[0070] The function of the first input end of the negative pressure suction module 44 has been described in the foregoing content and will not be elaborated here. The function of the second input end of the negative pressure suction module 44 is to remove the residual powder in the extrusion bin 41. Because it can be seen from the foregoing description that during continuous detection, a small amount of powder remains inside the extrusion bin 41.

[0071] The negative pressure suction module 44 can be turned on for a period of time before each analysis process to clean the inside of the extrusion bin 41 and the two extrusion belt modules 42.

[0072] The spectral analysis terminal 5 includes a moving linear module 51 installed inside the powder extruder 4, a laser distance sensor 52 and a spectral analyzer 53 installed on the moving linear module 51. The laser distance sensor 52 is used to detect the thickness of the analysis sample block.

[0073] The spectral analyzer 53 used here is a miniaturized spectral analyzer.

[0074] The moving linear module 51 can drive the laser distance sensor 52 and the spectral analyzer 53 to move. The purpose of moving is to perform multi-point sampling analysis on the analysis sample block. The function of the laser distance sensor 52 is to perform thickness detection to ensure the accuracy of the analysis result.

[0075] The laser distance sensor 52 and the spectral analyzer 53 are connected to the controller of the homogenization and mixing unit.

[0076] It should be understood that for the spectrum emitted by the spectral analyzer 53, a part is reflected on the surface of the analysis sample block, a part is reflected on the surface where the analysis sample block is located, and a part is reflected in the analysis sample block. Of course, there is also a certain refraction phenomenon during the reflection process.

[0077] The proportion of these three reflections needs to be within the calibration range, such asFigure 5 and Figure 6 As shown, it is required that the thickness of the analysis block is within the required range. When the thickness at a certain position on the analysis block does not meet the requirements, this position cannot be used as a sampling position. The function of the laser distance sensor 52 is to perform thickness detection to ensure the accuracy of the analysis result.

[0078] In Figure 6 it can be seen that S2 indicates that the thickness at a certain position on the analysis block meets the requirements, and S1 and S3 indicate that the thickness at a certain position on the analysis block does not meet the requirements.

[0079] Furthermore, it is required that in the moving direction of the analysis block, the laser distance sensor 52 is located in front of the spectral analyzer 53. This is because at this time, if the thickness of the analysis block is detected to be appropriate, the spectral analyzer 53 can perform sampling without moving.

[0080] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A component analysis system for low-heat cement clinker, characterized in that: include: A sampling circulation pipeline (1), both ends of which are connected to the homogenization and mixing unit to form a loop; the sampling circulation pipeline (1) includes a horizontal collection section (11); A powder interceptor (2) is arranged on the horizontal collecting section (11), and an intercepting portion of the powder interceptor (2) can extend into the interior of the horizontal collecting section (11); A powder collecting funnel (3) is arranged on the horizontal collecting section (11), and the powder collecting funnel (3) is located below the powder interceptor (2); A powder extruder (4) is connected to the output end of the powder collecting funnel (3) and is used to extrude the powder flowing out of the powder collecting funnel (3) to obtain an analysis material block; The spectrum analysis terminal (5) is arranged inside the powder extruder (4) and faces the analysis material block.

2. The component analysis system of low-heat cement clinker according to claim 1, characterized in that: The powder interceptor (2) comprises: A sampling cavity (21) is disposed on the horizontal collection section (11) and is in communication with the horizontal collection section (11); A linear telescopic unit (22) is arranged on the sampling cavity (21); A sampling plate (23) is arranged on the telescopic end of the linear telescopic unit (22) and is located inside the sampling cavity (21); A sampling interception plate (24) is arranged on the sampling plate (23); Wherein, in the airflow direction in the sampling cavity (21), the sampling interception plates (24) are arranged in multiple rows, and the sampling interception plates (24) in adjacent rows are arranged in a staggered manner.

3. The component analysis system of low-heat cement clinker according to claim 2, characterized in that: The first end of the sampling interception plate (24) is fixed on the sampling plate (23), and the second end of the sampling interception plate (24) is inclined in the same direction as the airflow direction in the sampling chamber (21).

4. The component analysis system of low-heat cement clinker according to claim 1, characterized in that: The powder extruder (4) comprises: The extrusion bin (41) is connected to the output end of the powder collecting funnel (3); Two extrusion belt modules (42) are horizontally arranged in the extrusion chamber (41), a gap exists between the two extrusion belt modules (42), and the lengths of the two extrusion belt modules (42) are different; The spectrum analysis terminal (5) is located at the shorter extrusion belt module (42) and faces the longer extrusion belt module (42).

5. The component analysis system of low-heat cement clinker according to claim 4, characterized in that: The width of the extrusion belt module (42) is greater than the width of the output end of the powder collecting funnel (3).

6. The component analysis system of low-heat cement clinker according to claim 5, characterized in that: Two groups of blocking members (43) are symmetrically arranged in the extrusion bin (41), and the output end of the powder collecting funnel (3) is located between the groups of blocking members (43); In the direction away from the output end of the powder collecting funnel (3), the size of the blocking member (43) in the vertical direction tends to decrease and extends into between the two extrusion belt dies (42).

7. The component analysis system of low-heat cement clinker according to claim 4, characterized in that: It also includes a negative pressure suction module (44) arranged on the extrusion chamber (41), wherein the input end of the negative pressure suction module (44) faces the longer extrusion belt module (42).

8. The component analysis system of low-heat cement clinker according to claim 7, characterized in that: The negative pressure suction module (44) has two input ends; A first input end of the negative pressure suction module (44) faces the longer extrusion belt module (42), and a second input end of the negative pressure suction module (44) faces the side wall of the extrusion chamber (41).

9. The component analysis system of low-heat cement clinker according to claim 1, characterized in that: The spectrum analysis terminal (5) comprises: A movable linear module (51) is arranged inside the powder extruder (4); The laser distance measuring sensor (52) and the spectrum analyzer (53) are both arranged on the movable linear module (51), and the laser distance measuring sensor (52) is used to detect and analyze the thickness of the material block.

10. The component analysis system of low-heat cement clinker according to claim 9, characterized in that: In the moving direction of the analyzed material block, the laser distance measuring sensor (52) is located in front of the spectrum analyzer (53).

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