Rapid digestion and measurement device for steelmaking slag components

Abstract

The utility model provides a rapid digestion and measurement device for steelmaking slag components, which relates to the technical field of component detection and comprises an operation table board, a liquid storage tank, a dropping pipette and a fluorine ion measurement electrode, a sample area, a digestion area, a dilution liquid adding area and a measurement area are sequentially arranged on the operation table top from one end to the other end; the liquid storage tank comprises a high-temperature liquid storage tank for storing an acid solution, a low-temperature liquid storage tank for storing distilled water and a medium-temperature liquid storage tank for storing a composite adjusting liquid; the dropping pipette is arranged in the digestion area and is respectively connected with the high-temperature liquid storage tank and the low-temperature liquid storage tank; a stainless steel tank is arranged below the dropping pipette, and a container filled with a sample is placed in the stainless steel tank; a liquid adding pipe connected with a liquid outlet of the medium-temperature liquid storage tank is arranged in the dilution liquid adding area; the fluorine ion measuring electrode is arranged in the measuring area; electromagnetic stirrers are arranged below the digestion area, the dilution liquid adding area and the measurement area of the operation table board. The device can be used for rapidly and accurately detecting the content of calcium fluoride in the steelmaking slag.

Description

Technical Field

[0001] This utility model relates to the technical field of component detection, and more specifically, to a device for rapid digestion and measurement of steelmaking slag components. Background Technology

[0002] In steelmaking, slag coats the surface of molten steel, absorbing and removing harmful impurities and non-metallic inclusions. The basicity, viscosity, melting temperature, oxidizing and reducing properties of the slag play a decisive role in the smooth progress of the smelting process and ensuring the quality of the molten steel. In other words, the properties of the slag directly affect the final quality of the molten steel. Depending on the composition and properties of the metal being smelted, different types of slag-forming agents need to be added during the smelting process to obtain slags with different compositions and physical properties. Therefore, slag composition is a crucial parameter in metal smelting, and its composition needs to be frequently analyzed to adjust the type and quantity of slag-forming agents added.

[0003] Many slags contain calcium fluoride, which reduces slag viscosity and increases slag fluidity. Therefore, the amount of calcium fluoride is an important process indicator for ensuring the fluidity of related slags. However, the measurement of fluorine based on the principle of total difference subtraction has the disadvantages of poor repeatability and large deviation in the measurement of calcium fluoride. It also affects the repeatability of the measurement of calcium oxide.

[0004] In existing technologies, the current slag composition detection technology uses X-ray fluorescence analysis, a method that analyzes the composition of substances by utilizing the interaction between X-rays and matter. When a sample is irradiated with high-energy X-rays, the inner-shell electrons of the atoms in the sample are excited, transitioning from low energy levels to high energy levels, thus creating a vacancy. Subsequently, outer-shell electrons transition back to the inner shell to fill this vacancy. During this process, the atoms release X-ray fluorescence with specific energies. The energy of this fluorescence is related to the type of atom; therefore, by detecting the energy and intensity of the fluorescence, the type and content of elements in the sample can be determined. Detection methods based on the principle of X-ray fluorescence analysis generally include X-ray fluorescence spectrometry fusion method and X-ray fluorescence photopolymerization method.

[0005] X-ray fluorescence spectrometry (XRF) is a quantitative analysis method that involves melting a solid slag sample with a flux at high temperature to form a homogeneous molten sheet, which is then irradiated with X-rays for quantitative analysis. However, the high temperature during the molten sheet process causes the fluorine in calcium fluoride to volatilize, making it unsuitable for slags containing calcium fluoride.

[0006] X-ray fluorescence spectrometry involves grinding slag samples into a fine powder, pressing the powder into a pellet under pressure, and then using X-ray irradiation for quantitative analysis. Since the sample is not weighed, it suffers from poor accuracy and repeatability. In the industry, X-ray fluorescence spectrometry is often described as "focusing on trends rather than accuracy."

[0007] Laser-induced breakdown spectroscopy (LAS) is an analytical technique based on laser-plasma emission spectroscopy. Its principle involves focusing a high-energy laser pulse onto the surface of a slag sample, instantly ionizing and exciting the surface material to form a high-temperature, high-density plasma. The atoms and ions in this plasma emit light with characteristic wavelengths. By collecting and analyzing the wavelength and intensity of this light using a spectrometer, the types and amounts of elements in the sample can be determined. However, during laser irradiation, the high temperature also causes fluorine in calcium fluoride to volatilize, making fluorine analysis impossible. Utility Model Content

[0008] The problem solved by this invention is how to quickly and accurately detect the calcium fluoride content in steelmaking slag.

[0009] To address the aforementioned problems, this utility model provides a rapid digestion and measurement device for steelmaking slag components, comprising: an operating table, a storage tank, a drip tube, and a fluoride ion measuring electrode; the operating table comprises, from one end to the other, a sample area, a digestion area, a dilution and addition area, and a measurement area; the storage tank includes a high-temperature storage tank for storing acidic solutions, a low-temperature storage tank for storing distilled water, and a medium-temperature storage tank for storing a composite conditioning solution;

[0010] The dropper is located in the digestion area and is connected to the high-temperature storage tank and the low-temperature storage tank respectively; a stainless steel tank is located below the dropper, and a container containing the sample is placed in the stainless steel tank; the liquid addition pipe connected to the outlet of the medium-temperature storage tank is located in the dilution and addition area; the fluoride ion measuring electrode is located in the measurement area.

[0011] Electromagnetic stirrers are installed below the digestion area, dilution and addition area, and measurement area of ​​the operating platform.

[0012] Optionally, a waste liquid tank is provided below the operating table.

[0013] Optionally, the drip tube is a tube composed of multiple microtubes, wherein the microtubes are respectively connected to the high-temperature storage tank and the low-temperature storage tank.

[0014] Optionally, a peristaltic pump is installed on the pipeline between the dripping pipe and the high-temperature storage tank and the low-temperature storage tank, and on the pipeline between the medium-temperature storage tank and its filling pipe.

[0015] Optionally, an electromagnetic metering pump is also provided between the liquid storage tank and the dripping pipe and the liquid adding pipe.

[0016] Optionally, the electromagnetic metering pump is equipped with a time relay.

[0017] Optionally, the outer wall of the stainless steel tank is provided with an ultrasonic transducer.

[0018] Optionally, the number of ultrasonic transducers is preferably 2 to 4, which are evenly distributed on the outer wall of the stainless steel tank.

[0019] Optionally, the high-temperature storage tank is equipped with a PTC constant-temperature heating element, the low-temperature storage tank is equipped with a compressor, and the medium-temperature storage tank is equipped with a PTC heating element.

[0020] Optionally, it also includes a reference electrode, a high-impedance millivoltmeter, and an anti-inverting amplifier. The fluoride ion measuring electrode and the reference electrode are connected to the input terminal of the high-impedance millivoltmeter, and the output terminal of the high-impedance millivoltmeter is connected to the input terminal of the anti-inverting amplifier. The output terminal of the anti-inverting amplifier is connected to a control panel.

[0021] The beneficial effects of this invention's rapid digestion and measurement device for steelmaking slag components are as follows: After digestion in the digestion zone, the steelmaking slag is measured using a fluoride ion measuring electrode. Under the condition of ensuring timeliness, rapid digestion and calcium fluoride measurement of the slag sample are achieved, enabling more accurate and independent quantitative reporting of calcium fluoride, while simultaneously ensuring the accuracy of the quantitative analysis results for calcium oxide. Applying this invention, the quantitative analysis results of calcium fluoride can be reported within 5-10 minutes, realizing rapid and accurate quantitative analysis of calcium oxide and calcium fluoride in slag. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a device for rapid digestion and measurement of steelmaking slag components according to the present invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 2. Low-temperature storage tank; 4. Electromagnetic metering pump; 5. Medium-temperature storage tank; 6. Peristaltic pump; 7. High-temperature storage tank; 8. Power supply; 9. Time relay; 10. Sample; 11. Dropper; 12. Stainless steel tank; 13. Ultrasonic transducer; 14. Waste liquid tank; 15. Electromagnetic stirrer; 16. Fluoride ion measuring electrode; 17. High-impedance millivoltmeter; 18. Temperature electrode. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.

[0026] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0027] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0028] like Figure 1 As shown in the figure, this utility model provides a rapid digestion and measurement device for the composition of steelmaking slag, including an operating table, a storage tank, a dripping tube 11, and a fluoride ion measuring electrode 16. The operating table is arranged from one end to the other (e.g., ...). Figure 1 From right to left, the components are: sample area, digestion area, dilution and addition area, and measurement area. The sample area is used to hold the sample 10 to be tested; the digestion area is used to add hot acid solution to the sample 10 to digest it; the dilution and addition area is used to add a compound conditioning solution to the digestion solution for dilution; and the measurement area is used for fluoride ion measurement.

[0029] The storage tanks include a high-temperature storage tank 7 for storing acidic solutions, a low-temperature storage tank 2 for storing distilled water, and a medium-temperature storage tank 5 for storing a compound conditioning solution. The acidic solutions include at least one of hydrochloric acid, nitric acid, perchloric acid, hydrobromic acid, and hydroiodic acid, each accounting for 10-90% of the mass concentration or volume concentration. The compound conditioning solution contains potassium chloride and caustic alkali.

[0030] A dropper 11 is located in the digestion zone and is connected to the outlets of the high-temperature storage tank 7 and the low-temperature storage tank 2, respectively. The appropriate solution is added dropwise to the container containing the sample by turning the pump on and off at the outlet of the storage tank. A stainless steel tank 12 with a volume of 1 to 5 L is located below the dropper 11. The stainless steel tank 12 is filled with water, and its inner side is used to place the container containing the sample (e.g., a beaker). The water in the stainless steel tank 12 is used to absorb the heat generated during the digestion process.

[0031] The liquid addition pipe connected to the outlet of the medium-temperature storage tank 5 is located in the dilution and addition area and is used to dilute the digested solution.

[0032] The fluoride ion measuring electrode 16 is positioned in the measurement area to measure the fluoride ion content in the sample. The fluoride ion measuring electrode 16 is based on the ion-selective electrode method. Its core component is a sensitive membrane with high selectivity for fluoride ions. When the electrode is immersed in the test solution, the fluoride ions in the solution interact with the sensitive membrane, generating a potential change. The concentration of fluoride ions in the solution is then obtained by measuring the potential.

[0033] Electromagnetic stirrers 15 are installed below the digestion area, dilution and addition area and the measurement area of ​​the operating table. The electromagnetic stirrer 15 is a device that drives the stir bar to rotate by a magnetic field, thereby stirring the liquid. By placing the stir bar in a container containing the sample and placing the container containing the sample on the stainless steel stirring tank 12, the rotating magnetic field will cause the stir bar to rotate synchronously and stir.

[0034] Specifically, a waste liquid tank 14 is installed below the operating table to hold the waste liquid after testing, which will be disposed of in a unified manner. The device is also equipped with a power supply 8 to power all components.

[0035] In this embodiment, electromagnetic stirrers are installed below the digestion zone, dilution and addition zone, and measurement zone of the operating platform of the device. The liquid is stirred by rotating the stir bar driven by a magnetic field, ensuring good homogeneity of the sample during digestion, dilution, and measurement. For the measurement of slag components, a homogeneous sample solution allows the measuring electrode to contact a more representative sample, improving the accuracy of the fluoride ion measuring electrode's measurement results. Furthermore, a fluoride ion measuring electrode is specifically designed to measure the fluoride ion content in the sample. This targeted measuring electrode can more accurately detect fluoride ions, reducing interference from other ions, thereby improving measurement accuracy. It is highly effective for measuring the fluoride ion content, a key component in steelmaking slag. While ensuring timeliness, the device achieves rapid digestion of slag samples and measurement of calcium fluoride, accurately and independently quantifying calcium fluoride, and simultaneously ensuring the accuracy of the quantitative analysis results of calcium oxide. Using this invention, the quantitative analysis results of calcium fluoride can be reported within 5-10 minutes, achieving rapid and accurate quantitative analysis of calcium oxide and calcium fluoride in slag.

[0036] Specifically, the dropper 11 is a tube composed of multiple microtubes, which are connected to the high-temperature storage tank 7 and the low-temperature storage tank 2 respectively, and is used to add hot acid to the sample to be tested, and can simultaneously add different liquids to the sample.

[0037] In this embodiment, the microtube structure allows for more precise control of the dripping rate and amount of each liquid. When adding hot acid to the sample, the amount of hot acid added can be precisely controlled by adjusting the dripping rate of the microtubes, based on factors such as the quantity and composition of the slag sample, thereby better controlling the progress of the digestion reaction. Furthermore, the multi-microtube structure increases the flexibility of liquid dripping, enabling the simultaneous addition of different liquids to the sample. Heated acid can be added while distilled water is added, facilitating adjustments to the digestion reaction conditions as needed and allowing for synergistic effects during the digestion process.

[0038] Optionally, a peristaltic pump 6 is installed on the pipeline between the dripping pipe 11 and the high-temperature storage tank 7 and the low-temperature storage tank 2, and on the pipeline between the medium-temperature storage tank 5 and its filling pipe. The peristaltic pump 6 is a device that delivers liquid by squeezing an elastic hose with rollers. During operation, the rollers alternately squeeze and release the pipelines connected between the dripping pipe 11 and the storage tanks (high-temperature storage tank 7 and low-temperature storage tank 2) and between the medium-temperature storage tank 5 and its outlet, pushing the liquid in the pipeline forward to achieve continuous liquid delivery.

[0039] Specifically, an electromagnetic metering pump is installed between the liquid storage tank and the dripping pipe 11 and the liquid adding pipe, which can more accurately control the flow rate of liquid output from the liquid storage tank (high temperature liquid storage tank 7, low temperature liquid storage tank 2, medium temperature liquid storage tank 5).

[0040] Specifically, the electromagnetic metering pump is also equipped with a time relay to control the operating time of the electromagnetic metering pump. The time relay is an automatic electrical appliance that uses electromagnetic principles or electronic components to achieve time delay control.

[0041] In this embodiment, the peristaltic pump 6 can precisely control the reagent flow rate. Furthermore, since the peristaltic pump 6 operates by unidirectionally squeezing the pipe to deliver the liquid, the liquid flows unidirectionally within the pipe. This effectively prevents the liquid from flowing back from the drip tube 11 into the storage tank, or from cross-contamination between different storage tanks. The electromagnetic metering pump has good adaptability to liquids of different properties. Whether it is an acidic solution, distilled water, or a compound conditioning solution, stable delivery can be achieved by adjusting the pump parameters (such as stroke length, frequency, etc.). This invention uses the peristaltic pump 6, the electromagnetic suction pump, and a time relay for liquid addition control, and can also set the liquid addition volume and duration.

[0042] Optionally, an ultrasonic transducer 13 is provided on the outer wall of the stainless steel tank 12.

[0043] Specifically, the number of ultrasonic transducers 13 is preferably 2 to 4, which are evenly distributed on the outer wall of the stainless steel tank 12.

[0044] In this embodiment, the ultrasonic transducer 13 can generate high-frequency vibrations, which can cause intense vibrations and minute cavitation effects inside the solution in the container containing the sample, making the mixing between the sample and the digestion solution more thorough and accelerating the digestion reaction.

[0045] Optionally, the high-temperature storage tank 7 is equipped with a PTC constant-temperature heating element for heating the acidic solution therein. The high-temperature storage tank 7 is made of polyethylene, polypropylene, or other plastic materials, and its internal heating temperature is set to 30 to 70°C, preferably 50 to 70°C.

[0046] The cryogenic storage tank 2 is equipped with a compressor for cooling the distilled water inside. The cryogenic storage tank 2 is made of polyethylene, polypropylene, or other plastic materials, and its internal heating temperature is set to 0 to 10°C.

[0047] The intermediate-temperature storage tank 5 is equipped with a PTC heating element for heating the composite conditioning liquid. The intermediate-temperature storage tank 5 is made of polyethylene, polypropylene, or other plastic materials, and its internal heating temperature is set to 20 to 25°C.

[0048] Specifically, the high-temperature storage tank 7, the low-temperature storage tank 2, and the medium-temperature storage tank 5 are provided with an insulation layer on their outer sides to reduce heat loss.

[0049] Specifically, corrosion-resistant thermocouples are installed in the high-temperature storage tank 7, the low-temperature storage tank 2, and the medium-temperature storage tank 5 to monitor the temperature of the solution in the storage tanks in real time. The temperature information is fed back to the control system, which can adjust the working status of the PTC constant temperature heating element, the compressor, and the PTC heating element according to the set temperature target and the actual measured temperature.

[0050] In this embodiment, the high-temperature storage tank 7, the low-temperature storage tank 2, and the medium-temperature storage tank 5 each use specific heating, cooling, heat preservation, and temperature monitoring feedback control settings to precisely regulate the temperature of the internal solution, providing stable and suitable conditions for the rapid digestion of steelmaking slag components and subsequent measurement work, ensuring that the entire experimental process can be carried out efficiently and accurately.

[0051] Optionally, a PTC constant temperature heating pipe is provided at the outlet of the high temperature storage tank 7 to heat the pumped liquid to 30 to 70°C, preferably 50 to 70°C.

[0052] The outlet of the low-temperature storage tank 2 is equipped with a PTC thermostatic cooling pipe, which is used to cool the pumped liquid to 0 to 10°C.

[0053] In this embodiment, the PTC thermostatic heating tube at the outlet of the high-temperature liquid storage tank 7 and the PTC thermostatic cooling tube at the outlet of the low-temperature liquid storage tank 2 play a role in temperature control in their respective liquid transport links. They can be flexibly adjusted and maintained stably, providing more flexibility for experimental operation and facilitating the optimization of digestion and measurement processes according to actual conditions.

[0054] Optionally, the rapid digestion and measurement device for steelmaking slag composition of this utility model may further include a reference electrode, a high-impedance millivoltmeter 17, and an anti-parallel amplifier. The fluoride ion measuring electrode 16 and the reference electrode are connected to the input terminal of the high-impedance millivoltmeter 17, and the output terminal of the high-impedance millivoltmeter 17 is connected to the input terminal of the anti-parallel amplifier. The output terminal of the anti-parallel amplifier is connected to the control panel.

[0055] Specifically, a temperature electrode 18 can be installed in the measurement area, and its output terminal is connected to the control panel. The temperature electrode 18 can monitor the temperature of the measurement environment, because temperature changes may cause the electrode potential to shift. By monitoring the temperature electrode, temperature compensation can be performed on the measurement results to improve the accuracy of the measurement.

[0056] In this embodiment, the potential of the reference electrode is fixed and can serve as a potential reference point, forming an electrochemical cell structure with the fluoride ion measuring electrode 16. The high-impedance millivoltmeter 17 has a very high input impedance, which minimizes the current flowing through the fluoride ion measuring electrode 16 during the measurement process, thereby accurately measuring the potential difference between the fluoride ion measuring electrode 16 and the reference electrode and ensuring the accuracy of the measurement results. The anti-logarithmic amplifier can convert the input potential signal into a signal proportional to the ion activity (or concentration) and display it directly, improving ease of use. This provides a rapid and accurate digestion and measurement device for the quantitative analysis of calcium fluoride in steelmaking slag.

[0057] This utility model discloses a rapid digestion and measurement device for the composition of steelmaking slag, the operation of which specifically includes the following steps:

[0058] I. Preparations before device startup and testing

[0059] S1. Before starting work, add the various chemical reagent solutions and distilled water required to the corresponding storage tanks. Acidic solutions are added to the high-temperature storage tank, and distilled water is added to the low-temperature storage tank. Set the temperatures to 60℃ and 2℃ respectively. Place the compound conditioning solution into the medium-temperature storage tank and set it to 20℃. Activate the temperature control button to bring the temperature of each reagent to the preset temperature.

[0060] Set the reagent removal volume: acid removal volume is 100ml, distilled water removal volume is 150ml;

[0061] Add water to the stainless steel tank up to the mark.

[0062] S2. Start the high-impedance millivoltmeter, clean the fluoride ion measuring electrode, calibrate the fluoride ion measuring curve using a fluoride ion standard solution, and after calibration, place the fluoride electrode in a beaker containing distilled water and put it into measurement mode.

[0063] II. Slag Sample Digestion

[0064] S3. Take a dry 500ml beaker and place it in the stainless steel tank of the digestion zone. Start pumping 100ml of hot acid solution into it. Start the electromagnetic stirrer 15 and the ultrasonic transducer. Weigh 0.5000g of slag sample and pour it into the beaker in the digestion state. After 60-180 seconds, pump in 150ml of cold distilled water. The pumping should be completed within 30 seconds. At this time, the slag sample digestion is complete. Then transfer the digestion solution to the electromagnetic stirrer 15 in the digestion zone and stir thoroughly.

[0065] S4. In the dilution and addition area, start the pipette / pump, transfer 5.0 ml of digestion solution into a 250 ml glass beaker (with built-in magnetic stir bar), and pump in 95 ml of compound conditioning solution. Place the mixed test solution beaker in the measurement area, start the measurement, complete the measurement within 30-60 seconds, and report the result.

[0066] The acid solution includes at least one of hydrochloric acid, nitric acid, perchloric acid, hydrobromic acid, and hydroiodic acid, each accounting for 10-90% of the mass concentration or volume concentration. The composite conditioning solution contains potassium chloride and caustic alkali.

[0067] The specific digestion principle of this device is as follows:

[0068] When the hot acid used for digestion is activated by ultrasound and electromagnetic stirring, the sample disperses and suspends in the acid solution at the fastest speed after being added, without hydrolysis or agglomeration. The sample particles maintain their original shape and size as much as possible (the original size of the sample particles is usually 80 mesh), avoiding agglomeration between sample particles. This allows the sample particles to react with the acid in an extremely small state initially, and then the sample particles can always be in close contact with the acid to undergo a dissolution reaction. This greatly shortens the sample digestion time, and the dissolution reaction is accelerated, so that the sample can be completely digested within 1-2 minutes.

[0069] Measurement principle: The compound conditioning solution contains potassium chloride and caustic alkali. After mixing with 5 ml of digestion solution, it achieves the required ionic strength and pH value of 6.5-7.0 for fluoride ion measurement. Fluoride ion measurement can then be performed directly.

[0070] The results showed that the mass fraction of calcium fluoride in the slag was calculated based on the fluoride ion concentration.

[0071] Based on existing technology, the fluoride ion electrode analysis of fluoride ions in solution is the most accurate and reliable quantitative analysis technique in the quantitative analysis of fluoride. This article will not reiterate its specific principles and the reliability of the measurement results.

[0072] The results obtained using the above method were compared with the standard sample values, and the results are shown in Table 1:

[0073] Table 1 Slag Analysis Results

[0074]

[0075] As can be seen from Table 1, the present invention can complete the quantitative analysis of calcium fluoride in steelmaking slag within 6-8 minutes, which is timely and accurate.

[0076] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A device for rapid digestion and measurement of steelmaking slag components, characterized by, The application relates to a fluorine ion measurement device, which comprises the following parts: an operation table, a liquid storage tank, a drop pipe (11) and a fluorine ion measurement electrode (16); the operation table is sequentially provided with a sample area, a digestion area, a dilution liquid adding area and a measurement area from one end to the other end; the liquid storage tank comprises a high-temperature liquid storage tank (7) for storing an acid solution, a low-temperature liquid storage tank (2) for storing distilled water and a medium-temperature liquid storage tank (5) for storing a composite adjusting liquid; the drop pipe (11) is arranged in the digestion area and is connected with liquid outlets of the high-temperature liquid storage tank (7) and the low-temperature liquid storage tank (2) respectively; a stainless steel tank (12) is arranged below the drop pipe (11), and a container containing a sample is arranged in the stainless steel tank (12); a liquid adding pipe connected with a liquid outlet of the medium-temperature liquid storage tank (5) is arranged in the dilution liquid adding area; the fluorine ion measurement electrode (16) is arranged in the measurement area; electromagnetic stirrers (15) are arranged below the digestion area, the dilution liquid adding area and the measurement area of the operation table.

2. The device for rapid digestion and measurement of steelmaking slag composition according to claim 1, characterized in that, a waste liquid barrel (14) is arranged below the operation table.

3. The device for rapid digestion and measurement of steelmaking slag composition according to claim 1, characterized in that, The drop pipe (11) is a pipe material composed of multiple micro-pipes, and the micro-pipes are connected with the high-temperature liquid storage tank (7) and the low-temperature liquid storage tank (2) respectively.

4. The device for rapid digestion and measurement of steelmaking slag composition according to claim 1, characterized in that, A peristaltic pump (6) is arranged on a pipeline between the drop pipe (11) and the high-temperature liquid storage tank (7) and the low-temperature liquid storage tank (2) and between the medium-temperature liquid storage tank (5) and the liquid adding pipe.

5. The device for rapid digestion and measurement of steelmaking slag composition according to claim 1, characterized in that, An electromagnetic metering pump (4) is further arranged between the liquid storage tank and the drop pipe (11) and the liquid adding pipe.

6. The device for rapid digestion and measurement of steelmaking slag composition according to claim 5, characterized in that, A time relay (9) is arranged on the electromagnetic metering pump (4).

7. The device for rapid digestion and measurement of steelmaking slag composition according to claim 1, characterized in that, An ultrasonic transducer (13) is arranged on the outer tank wall of the stainless steel tank (12).

8. The device for rapid digestion and measurement of steelmaking slag composition according to claim 7, characterized in that, The number of the ultrasonic transducers (13) is 2-4, and the ultrasonic transducers are evenly distributed on the outer tank wall of the stainless steel tank (12).

9. The device for rapid digestion and measurement of steelmaking slag composition according to claim 7, characterized in that, A PTC constant-temperature heating sheet is arranged in the high-temperature liquid storage tank (7), a compressor is arranged in the low-temperature liquid storage tank (2) and a PTC heating sheet is arranged in the medium-temperature liquid storage tank (5).

10. The apparatus for rapid digestion and measurement of steelmaking slag composition according to claim 7, characterized in that, A reference electrode, a high-impedance millivoltmeter (17) and an anti-logarithm amplifier are further arranged, the fluorine ion measurement electrode (16) and the reference electrode are connected with the input end of the high-impedance millivoltmeter, the output end of the high-impedance millivoltmeter is connected with the input end of the anti-logarithm amplifier, and the output end of the anti-logarithm amplifier is connected with a control panel.

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