Detection device for carbon content of graphite ore

Abstract

The invention discloses a device for detecting the carbon content of graphite ore, and relates to the technical field of non-metal ore detection. A graphite ore carbon content detection device comprises a control unit, a crushing and drying unit, a weighing unit, a combustion unit, a filtering unit, an absorption unit and a detection unit, the crushing and drying unit, the weighing unit, the combustion unit and the detection unit are all connected with the control unit, and the crushing and drying unit comprises a first box body; a smashing hammer is arranged on the first box body, an air blowing pipe is arranged on one side of the first box body, and an air pump is connected to the air blowing pipe. The device has the beneficial effects that the graphite ore can be fully combusted, the interference of impurity gas is reduced, and the detection precision is improved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of non-metallic mineral detection, and in particular to a device for detecting the carbon content of graphite ore. Background Art

[0002] After graphite ore is produced, its component content needs to be measured and analyzed, especially the carbon content in the sample, which is one of the important indicators for evaluating the quality of graphite ore. Therefore, the analysis of carbon content in graphite ore has received widespread attention. Usually, carbon determination instruments are used to detect the carbon content in graphite ore. The solid powder sample is burned to generate carbon dioxide from the carbon contained in the sample, and then the carbon dioxide detector is used to detect the concentration before calculation. However, the following problems still exist:

[0003] 1. Due to the high melting point of graphite ore, the combustion speed is slow, and even the combustion efficiency is too low, so the carbon content in the graphite ore cannot be accurately detected.

[0004] 2. Impurity gases generated during the combustion of samples, such as sulfur dioxide and ammonia oxides, will not only interfere with the detection of carbon content, but also be emitted as harmful gases, causing air pollution. Summary of the invention

[0005] In order to solve the deficiencies of the prior art, the present invention provides a device for detecting the carbon content of graphite ore, which can make the graphite ore burn fully, reduce the interference of impurity gases, and improve the detection accuracy.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A graphite ore carbon content detection device comprises a control unit, a crushing and drying unit, a weighing unit, a combustion unit, a filtering unit, an absorption unit, and a detection unit, wherein the crushing and drying unit, the weighing unit, the combustion unit, and the detection unit are all connected to the control unit, and the crushing and drying unit comprises a first box body, on which a crushing hammer is provided, and one side of the first box body is provided with a blowing pipe, and the blowing pipe is connected to an air pump;

[0008] A second box is provided on one side of the first box, a first filter is provided between the first box and the second box, a return air duct is provided on the top of the second box, and the first box and the second box are both connected to the return air duct;

[0009] A rotating grinding disc is provided in the second box, a plurality of grinding balls are provided on the rotating grinding disc, and a motor transmission device is connected to the bottom of the rotating grinding disc;

[0010] A second filter screen is provided on one side of the second housing. The mesh size of the second filter screen is smaller than that of the first filter screen. A vibrating screen device is provided on the second filter screen. A discharge pipe is connected to one side of the second filter screen.

[0011] The motor transmission device comprises a power motor, a first bevel gear transmission mechanism is arranged on the power motor, a first rotating rod is arranged on the first bevel gear transmission mechanism, and a top end of the first rotating rod passes through the bottom of the second box body and is connected with the grinding disc.

[0012] The vibrating screen device includes a guide rod, which is arranged on a first bevel gear transmission mechanism, a second bevel gear transmission mechanism is provided on the guide rod, a second rotating rod is provided on the second bevel gear transmission mechanism, a cam is provided on the second rotating rod, a vibrating screen plate is provided on one side of the cam, the vibrating screen plate is sleeved on a discharge pipe, a plurality of springs are provided on the side of the vibrating screen plate opposite to the cam, the side of the spring away from the vibrating screen plate is connected to the outer wall of the second box body, and the second filter screen is fixed on the discharge pipe.

[0013] The discharge pipe is provided with a corrugated hose, and the corrugated hose is located on the same side of the cam on the vibrating screen plate.

[0014] The weighing unit is an electronic scale.

[0015] The combustion unit comprises a combustion furnace, the combustion furnace is connected with an air charging pipe, and the air charging pipe is connected with an air pump.

[0016] A three-way pipe joint is installed on the air pump, a first solenoid valve is installed between the blowing pipe and the three-way pipe joint, a second solenoid valve is installed between the inflation pipe and the three-way pipe joint, and both the first solenoid valve and the second solenoid valve are connected to a control system.

[0017] The filter unit is a fiber filter, and the filter unit is communicated with the inflation tube.

[0018] The absorption unit includes a sodium hydroxide solution and an SCR denitration device. The filter unit is communicated with an air filling pipe, a third solenoid valve is arranged on the air filling pipe, the filter unit is located between the combustion furnace and the third solenoid valve, and the third solenoid valve is connected to a control system.

[0019] The detection unit is a carbon content detector.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] The present application conducts carbon content detection on the graphite ore sample through efficient processing, and improves detection efficiency and detection accuracy after the graphite ore is crushed, dried, weighed, burned, filtered and adsorbed. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] AttachedFigure 1 It is a flowchart of the working principle of the present invention;

[0023] Attached Figure 2 It is a schematic diagram of the main view structure of the present invention;

[0024] Attached Figure 3 It is a schematic diagram of the internal structure of the first box body and the second box body of the present invention;

[0025] Attached Figure 4 It is a schematic diagram of the top view of the cam structure of the present invention;

[0026] Attached Figure 5 It is an enlarged view of part I of the present invention.

[0027] Numbers shown in the accompanying drawings: 1. first housing 1; 2. crushing hammer; 3. blowing pipe; 4. air pump; 5. second housing; 6. first filter; 7. return air pipe; 8. rotating grinding disc; 9. grinding balls; 10. second filter; 11. discharge pipe; 12. first bevel gear transmission mechanism; 13. first rotating rod; 14. guide rod; 15. second bevel gear transmission mechanism; 16. second rotating rod; 17. cam; 18. vibrating screen plate; 19. spring; 20. corrugated hose; 21. electronic scale; 22. combustion furnace; 23. charging pipe; 24. three-way pipe joint; 25. first solenoid valve; 26. second solenoid valve; 27. fiber filter; 28. sodium oxide solution; 29. ​​SCR denitrification device; 30. third solenoid valve; 31. carbon content detector. DETAILED DESCRIPTION

[0028] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0029] The standard parts used in this application can all be purchased from the market, and special-shaped parts can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, and bonding in the existing technology, and the components used for circuit connection are all conventional models in the existing technology.

[0030] At the same time, in order to clearly express the connection relationship and working principle between the components and highlight the key points, the drawings in the specification are organized and drawn in the form of simple diagrams. One simple diagram can correspond to a variety of materials and actual external structural shapes.

[0031] As attached Figure 1-5As shown, a device for detecting the carbon content of graphite ore has a main structure including a control unit, a crushing and drying unit, a weighing unit, a combustion unit, a filtering unit, an absorption unit, and a detection unit. The crushing and drying unit, the weighing unit, the combustion unit, and the detection unit are all connected to the control unit. The crushing and drying unit includes a first box body 1, on which a crushing hammer 2 is provided. The crushing hammer can be controlled by a cylinder or a hydraulic cylinder to drive the hammer head to reciprocate and crush the graphite ore blocks. A blow pipe 3 is provided on one side of the first housing 1, and an air pump 4 is connected to the blow pipe 3; a second housing 5 is provided on one side of the first housing 1, a first filter 6 is provided between the first housing 1 and the second housing 5, a return air pipe 7 is provided on the top of the second housing 5, and the first housing 1 and the second housing 5 are both connected to the return air pipe 7; a rotating grinding disc 8 is provided in the second housing 5, and a plurality of grinding balls 9 are provided on the rotating grinding disc 8, and a motor transmission device is connected to the bottom of the rotating grinding disc 8; a second filter 10 is provided on one side of the second housing 5, and the mesh size of the second filter 10 is smaller than that of the first filter 6, a vibrating sieve device is provided on the second filter 10, and a discharge pipe 11 is connected to one side of the second filter 10. Under the action of the crushing hammer and the blow pipe of the air outlet pipe, the graphite ore is crushed and dried back and forth, and the moisture in the ore is blown dry, and the first filter and the second filter cooperate in screening, so that the subsequent ore samples are fully burned in the combustion furnace.

[0032] As an optimization, the motor transmission device includes a power motor, a first bevel gear transmission mechanism 12 is provided on the power motor, a first rotating rod 13 is provided on the first bevel gear transmission mechanism 12, and the top end of the first rotating rod 13 passes through the bottom of the second box 5 and is connected to the rotating grinding disc 8. The power motor drives the rotating grinding disc 8 to rotate through the first bevel gear transmission structure, and grinds the ore through the grinding balls, with a stable structure and small space occupation.

[0033] As an optimization, a guide rod 14 is provided on the first bevel gear transmission mechanism 12, a second bevel gear transmission mechanism 15 is provided on the guide rod 14, a second rotating rod 16 is provided on the second bevel gear transmission mechanism 15, a cam 17 is provided on the second rotating rod 16, a vibrating screen plate 18 is provided on one side of the cam 17, the vibrating screen plate 18 is sleeved on the discharge pipe 11, a plurality of springs 19 are provided on the side opposite to the vibrating screen plate 18 and the side of the spring 19 away from the vibrating screen plate 18 is connected to the outer wall of the second box body 5, and the second filter screen 10 is fixed on the discharge pipe 11. The vibrating screen device adopts a guide rod plus a second bevel gear structure, and uses the same power motor as the rotating grinding disc, which improves efficiency, further reduces space occupation, and optimizes the use of the device. As shown in the accompanying drawings, a seat bearing can be provided on the guide rod to fix the guide rod and improve the stability of the guide rod rotation.

[0034] Furthermore, the discharge pipe 11 is provided with a corrugated hose 20, which is located on the same side of the cam 17 on the vibrating screen plate 18. The setting of the corrugated hose can adapt to the vibration adjustment of the vibrating screen device, reduce the vibration of the discharge pipe part on one side of the weighing unit, and facilitate discharge.

[0035] Furthermore, the weighing unit is an electronic scale 21. The electronic scale adopts an existing electronic scale for measuring the weight of ore samples and can be connected to a control system.

[0036] Furthermore, the combustion unit includes a combustion furnace 22 , and an air filling pipe 23 is connected to the combustion furnace 22 , and the air filling pipe 23 is connected to the air pump 4 .

[0037] The air pump 4 is provided with a three-way pipe joint 24, a first solenoid valve 25 is provided between the blowing pipe 3 and the three-way pipe joint 24, a second solenoid valve 26 is provided between the inflation pipe 23 and the three-way pipe joint 24, and both the first solenoid valve 25 and the second solenoid valve 26 are connected to a control system. The first solenoid valve and the second solenoid valve are used to adjust and control the air intake direction of the air pump.

[0038] The filter unit is a fiber filter 27, which is connected to the inflation tube 23. Ceramic or metal fiber filters are used to remove solid particles produced by combustion, such as incompletely burned carbon particles. The pore size of these filters is generally between 0.1 and 10 microns. Tiny carbon particles can be effectively intercepted to prevent them from entering the subsequent purification links and detection units, reduce interference, and improve detection accuracy.

[0039] The absorption unit includes a sodium oxide solution 28 and an SCR denitrification device 29. The filter unit is connected to the gas charging pipe 23. A third solenoid valve 30 is arranged on the gas charging pipe 23. The filter unit is located between the combustion furnace 22 and the third solenoid valve 30. The third solenoid valve 30 is connected to the control system. The absorption unit is used to absorb impurity gases generated by the combustion of graphite ore, mainly acidic gases such as sulfur dioxide and ammonia oxides. The sodium oxide solution can react with sulfur dioxide to convert sulfur dioxide into salts such as sodium sulfite, thereby removing sulfur dioxide. For ammonia oxides, an SCR denitrification device is used. Under the action of a catalyst, ammonia oxides are reduced to ammonia and water with ammonia, which purifies the exhaust gas and reduces detection interference.

[0040] Furthermore, the detection unit is a carbon content detector 31. The carbon content detector 31 can select a high-precision infrared absorption carbon-sulfur analyzer, which uses the absorption characteristics of carbon dioxide to infrared light of a specific wavelength to accurately measure its content, thereby indirectly obtaining the carbon content in the graphite ore.

[0041] Preferably, the control system can adopt a PLC control system, which has mature technology and stable control, and is suitable for controlling the crushing and drying unit, weighing unit, combustion unit and detection unit in this device.

[0042] Working principle:

[0043] First, put the collected graphite ore sample into the first box, start the air pump, open the first solenoid valve, blow the sample to the position of the crushing hammer, and the crushing hammer reciprocates to crush the sample. After the crushed sample can pass through the first filter, it enters the second box through the first filter, and grinds the sample by rotating the grinding disc and grinding balls. In this process, if the ground powder cannot pass through the second filter, under the vibrating sieve of the second filter, the sample will pass through the return air duct and return to the first box, and continue to be crushed by the crushing hammer until the sample powder can pass through the second sieve and is weighed by an electronic scale. In this process, not only the suitable sample powder is screened, but also the sample is disturbed, and the moisture in the sample is removed by blowing the air pump.

[0044] After the electronic scale weighs a certain weight of sample powder, the control system controls the air pump, the rotating grinding disc, and the vibrating sieve device to stop running. After weighing a certain mass, it is placed in the combustion furnace, and then the air pump is started, the first solenoid valve is closed, and the second solenoid valve is opened. The sample is fully burned at high temperature through the inflation of the air pump. At this time, the third solenoid valve is closed, and the gas after combustion can also fully react with the filter unit and the absorption unit. The reaction time of the gas generated by combustion depends on the gas flow rate and the concentration of the absorbent. It can be set to 2 to 10 seconds according to the actual situation. After the reaction, ensure that the impurity gas is effectively absorbed and removed, and then enter the carbon content detector to detect the carbon dioxide content.

Claims

1. A graphite ore carbon content detection device, comprising a control unit, a crushing and drying unit, a weighing unit, a combustion unit, a filtering unit, an absorption unit, and a detection unit, wherein the crushing and drying unit, the weighing unit, the combustion unit, and the detection unit are all connected to the control unit, characterized in that: The crushing and drying unit comprises a first box body, a crushing hammer is arranged on the first box body, a blowing pipe is arranged on one side of the first box body, and an air pump is connected to the blowing pipe; A second box is provided on one side of the first box, a first filter is provided between the first box and the second box, a return air duct is provided on the top of the second box, and the first box and the second box are both connected to the return air duct; A rotating grinding disc is provided in the second box, a plurality of grinding balls are provided on the rotating grinding disc, and a motor transmission device is connected to the bottom of the rotating grinding disc; A second filter screen is provided on one side of the second housing. The mesh size of the second filter screen is smaller than that of the first filter screen. A vibrating screen device is provided on the second filter screen. A discharge pipe is connected to one side of the second filter screen.

2. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: The motor transmission device comprises a power motor, a first bevel gear transmission mechanism is arranged on the power motor, a first rotating rod is arranged on the first bevel gear transmission mechanism, and a top end of the first rotating rod passes through the bottom of the second box body and is connected with the grinding disc.

3. A graphite ore carbon content detection device according to claim, characterized in that: The vibrating screen device includes a guide rod, which is arranged on a first bevel gear transmission mechanism, a second bevel gear transmission mechanism is provided on the guide rod, a second rotating rod is provided on the second bevel gear transmission mechanism, a cam is provided on the second rotating rod, a vibrating screen plate is provided on one side of the cam, the vibrating screen plate is sleeved on a discharge pipe, a plurality of springs are provided on the side of the vibrating screen plate opposite to the cam, the side of the spring away from the vibrating screen plate is connected to the outer wall of the second box body, and the second filter screen is fixed on the discharge pipe.

4. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: The discharge pipe is provided with a corrugated hose, and the corrugated hose is located on the same side of the cam on the vibrating screen plate.

5. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: The weighing unit is an electronic scale.

6. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: The combustion unit comprises a combustion furnace, the combustion furnace is connected with an air charging pipe, and the air charging pipe is connected with an air pump.

7. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: A three-way pipe joint is installed on the air pump, a first solenoid valve is installed between the blowing pipe and the three-way pipe joint, a second solenoid valve is installed between the inflation pipe and the three-way pipe joint, and both the first solenoid valve and the second solenoid valve are connected to a control system.

8. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: The filter unit is a fiber filter, and the filter unit is communicated with the inflation tube.

9. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: The absorption unit includes a sodium oxide solution and an SCR denitration device. The filter unit is communicated with an air charging pipe, a third solenoid valve is arranged on the air charging pipe, the filter unit is located between the combustion furnace and the third solenoid valve, and the third solenoid valve is connected to a control system.

10. The device for detecting carbon content in graphite ore according to claim 1, characterized in that: The detection unit is a carbon content detector.

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