Method for determining rare earth elements and trace elements in titanium ore through high-pressure microwave digestion
Through the combination of high-voltage microwave digestion and inductively coupled plasma mass spectrometer, the efficiency and accuracy of titanium ore element determination in traditional methods are solved, and rapid and accurate rare earth and trace element analysis is achieved, reducing environmental impact.
Patent Information
- Application Number
- CN202510678256.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2025-08-01
AI Technical Summary
Traditional methods have low efficiency and poor accuracy when determining rare earth elements and trace elements in titanium ore, making it difficult to meet the needs of ore element analysis.
The method of high-voltage microwave digestion combined with inductively coupled plasma mass spectrometer was used to digest titanium ore samples under high pressure through microwave digestion tanks, and a mixture of nitric acid and hydrofluoric acid was used as digestion solution. The element content was then diluted and measured by inductively coupled plasma mass spectrometer, and finally the data was processed through software.
It improves the measurement efficiency and accuracy, can complete sample digestion in a short time, reduces the discharge of harmful gases and waste liquids, and provides an environmentally friendly and efficient analysis method.
Smart Images
Figure CN120404895A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of ore element analysis, and particularly relates to a method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion. Background Art
[0002] Titanium ore is generally ilmenite. Ilmenite is an oxide mineral of iron and titanium, also known as titanomagnetite, and is the main ore for extracting titanium. Ilmenite is very heavy, gray to black, with a little metallic luster. The crystals are generally plate-shaped, and the crystal aggregates are massive or granular. The composition is FeTiO3. The TiO2 content is 52.66%, and it is the main mineral for extracting titanium and titanium dioxide. In the process of mining and processing titanium ore, accurately determining the content of rare earth elements and trace elements therein is of great significance for ore quality assessment, resource utilization, and environmental protection.
[0003] Traditional determination methods include wet chemical analysis, X-ray fluorescence spectrometry, etc. However, these methods often have problems such as complex operation and long time consumption, reducing the determination efficiency of rare earth elements and trace elements in titanium ore. At the same time, the measurement accuracy is also relatively low, and it is difficult to accurately determine the content of rare earth elements and trace elements in titanium ore, unable to meet the requirements of the ore element analysis field.
[0004] Therefore, we propose a method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion. Summary of the Invention
[0005] The present invention mainly solves the technical problems existing in the above-mentioned prior art, and provides a method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion.
[0006] In order to achieve the above object, the present invention adopts the following technical solution. A method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion specifically includes the following steps:
[0007] First step: Sample preparation: Crush the titanium ore sample to an appropriate particle size and accurately weigh a certain amount of the sample;
[0008] Second step: Microwave digestion: Put the weighed sample into a special high-pressure microwave digestion tank, add an appropriate amount of digestion solution, and then put the digestion tank into a microwave digester for digestion;
[0009] Third step: Cooling and dilution: After digestion is completed, take out the digestion tank and cool it to room temperature, then transfer the digestion solution to a volumetric flask and dilute it to the scale with deionized water;
[0010] Fourth step: Determination and analysis: Use an inductively coupled plasma mass spectrometer to measure the diluted digestion solution to obtain the content of rare earth elements and trace elements in the titanium ore;
[0011] Step 5: Data processing: According to the measurement results of the instrument, corresponding software is used for data processing to obtain the final elemental content data.
[0012] Preferably, the appropriate particle size in the first step is specifically between 10 mesh and 80 mesh, which can ensure that the sample has a sufficient surface area to fully contact the digestion solution, thereby improving the digestion efficiency and the accuracy of the measurement.
[0013] Preferably, the certain amount of sample in the first step is specifically between 0.5 g and 1.0 g. Such a sampling amount can ensure sufficient reaction between the sample and the digestion solution during microwave digestion, and at the same time avoid incomplete digestion caused by excessive sample amount.
[0014] Preferably, the specially designed high-pressure microwave digestion tank in the second step is made of materials with high temperature resistance, high pressure resistance and corrosion resistance to ensure the safety and digestion effect of the digestion tank during microwave digestion.
[0015] Preferably, the digestion solution added in the second step specifically includes a mixed solution of nitric acid and hydrofluoric acid, where the ratio of nitric acid to hydrofluoric acid is between 1:1 and 3:1. Nitric acid helps the preliminary decomposition of the sample, while hydrofluoric acid can effectively dissolve the silicate minerals in the sample, so that rare earth elements and trace elements can be released more completely. By optimizing the ratio of nitric acid to hydrofluoric acid, the digestion efficiency and the accuracy of the measurement can be further improved.
[0016] Preferably, the dilution ratio for diluting to the scale with deionized water in the third step is specifically between 1:10 and 1:100. By precisely controlling the dilution ratio, it can be ensured that during the determination by inductively coupled plasma mass spectrometry, the concentration of the sample solution is within the optimal detection range of the instrument, thereby improving the sensitivity and accuracy of the measurement.
[0017] Preferably, the inductively coupled plasma mass spectrometry for determination and analysis in the fourth step has high sensitivity and high selectivity, and can accurately determine the contents of rare earth elements and trace elements in the titanium ore sample. In addition, the inductively coupled plasma mass spectrometry can also simultaneously determine multiple elements, greatly improving the analysis efficiency.
[0018] Preferably, the software used for data processing in the fifth step can correct and analyze the measurement results of the inductively coupled plasma mass spectrometry to eliminate influencing factors such as matrix effects and instrument drift, so as to obtain more accurate elemental content data. Through software processing, rapid analysis and report generation of the measurement results can be realized, providing convenience for the quantitative analysis of ore elements.
[0019] The present invention provides a method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion. It has the following beneficial effects:
[0020] 1. For the method of determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, by using the high-pressure microwave digestion technology, the digestion process of the sample can be completed in a relatively short time, greatly improving the work efficiency and having a high digestion efficiency. By using an inductively coupled plasma mass spectrometer, the contents of rare earth elements and trace elements in titanium ore can be accurately determined, which not only improves the determination efficiency but also ensures the accuracy of the determination results, and has important application value in the field of ore element analysis.
[0021] 2. For the method of determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, by setting up a high-pressure microwave digestion tank, since the digestion process is carried out in a closed high-pressure microwave digestion tank, the emission of harmful gases and waste liquid is reduced, and the impact on the environment is relatively small. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is the flowchart of the method of the present invention. DETAILED DESCRIPTION OF THE INVENTION
[0023] Example 1: A method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, as Figure 1As shown, it specifically includes the following steps: The first step: Sample preparation: Crush the titanium ore sample to an appropriate particle size and accurately weigh a certain amount of the sample; The second step: Microwave digestion: Put the weighed sample into a special high-pressure microwave digestion tank, add an appropriate amount of digestion solution, and then put the digestion tank into a microwave digester for digestion; The third step: Cooling and dilution: After digestion is completed, take out the digestion tank and cool it to room temperature, then transfer the digestion solution to a volumetric flask and dilute it to the mark with deionized water; The fourth step: Determination and analysis: Use an inductively coupled plasma mass spectrometer to measure the diluted digestion solution to obtain the contents of rare earth elements and trace elements in the titanium ore; The fifth step: Data processing: According to the measurement results of the instrument, use corresponding software for data processing to obtain the final element content data. The appropriate particle size in the first step is specifically 10 mesh, which can ensure that the sample has a sufficient surface area to fully contact with the digestion solution, thereby improving the digestion efficiency and the accuracy of the measurement. The certain amount of the sample in the first step is specifically 0.5 g. Such a sampling amount can ensure sufficient reaction between the sample and the digestion solution during microwave digestion, while avoiding the problem of incomplete digestion caused by excessive sample amount. In the second step, the specially designed high-pressure microwave digestion tank is made of materials with high temperature resistance, high pressure resistance, and corrosion resistance to ensure the safety and digestion effect of the digestion tank during microwave digestion. The digestion solution added in the second step specifically includes a mixed solution of nitric acid and hydrofluoric acid, where the ratio of nitric acid to hydrofluoric acid is 1:1. Nitric acid helps with the preliminary decomposition of the sample, while hydrofluoric acid can effectively dissolve the silicate minerals in the sample, enabling the more complete release of rare earth elements and trace elements. By optimizing the ratio of nitric acid to hydrofluoric acid, the digestion efficiency and the accuracy of the determination can be further improved. In the third step, the dilution ratio for diluting to the scale with deionized water is specifically between 1:10. By precisely controlling the dilution ratio, it can be ensured that during the determination by inductively coupled plasma mass spectrometry, the concentration of the sample solution is within the optimal detection range of the instrument, thereby improving the sensitivity and accuracy of the determination. In the fourth step, the inductively coupled plasma mass spectrometry for determination and analysis has high sensitivity and high selectivity, and can accurately determine the contents of rare earth elements and trace elements in the titanium ore sample. In addition, the inductively coupled plasma mass spectrometry can also simultaneously determine multiple elements, greatly improving the analysis efficiency. In the fifth step, the software used for data processing can correct and analyze the determination results of the inductively coupled plasma mass spectrometry to eliminate influencing factors such as matrix effects and instrument drift, thereby obtaining more accurate element content data. Through software processing, rapid analysis and report generation of the determination results can be achieved, providing convenience for the quantitative analysis of ore elements. By using the high-pressure microwave digestion technology, the digestion process of the sample can be completed in a relatively short time, greatly improving the work efficiency and having a high digestion efficiency. By using the inductively coupled plasma mass spectrometry, the contents of rare earth elements and trace elements in the titanium ore can be accurately determined, not only improving the determination efficiency but also ensuring the accuracy of the determination results, which has important application value in the field of ore element analysis.
[0024] Example 2: A method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, as Figure 1As shown, it specifically includes the following steps: The first step: Sample preparation: Crush the titanium ore sample to an appropriate particle size and accurately weigh a certain amount of the sample; The second step: Microwave digestion: Put the weighed sample into a special high-pressure microwave digestion tank, add an appropriate amount of digestion solution, and then place the digestion tank into a microwave digester for digestion; The third step: Cooling and dilution: After digestion is completed, take out the digestion tank and cool it to room temperature, then transfer the digestion solution to a volumetric flask and dilute it to the mark with deionized water; The fourth step: Determination and analysis: Use an inductively coupled plasma mass spectrometer to measure the diluted digestion solution to obtain the contents of rare earth elements and trace elements in the titanium ore; The fifth step: Data processing: According to the measurement results of the instrument, use corresponding software for data processing to obtain the final element content data. The appropriate particle size in the first step is specifically 30 mesh, which can ensure that the sample has sufficient surface area to fully contact with the digestion solution, thereby improving the digestion efficiency and the accuracy of measurement. The certain amount of the sample in the first step is specifically 0.7 grams. Such a sampling amount can ensure sufficient reaction between the sample and the digestion solution during microwave digestion, and at the same time avoid incomplete digestion caused by excessive sample amount. The special high-pressure microwave digestion tank in the second step is made of materials with high temperature resistance, high pressure resistance and corrosion resistance to ensure the safety and digestion effect of the digestion tank during microwave digestion. The digestion solution added in the second step specifically includes a mixed solution of nitric acid and hydrofluoric acid, and the ratio of nitric acid to hydrofluoric acid is 1:1. Nitric acid helps the preliminary decomposition of the sample, while hydrofluoric acid can effectively dissolve the silicate minerals in the sample, so that rare earth elements and trace elements can be released more completely. By optimizing the ratio of nitric acid to hydrofluoric acid, the digestion efficiency and the accuracy of measurement can be further improved. The dilution ratio of diluting to the mark with deionized water in the third step is specifically 1:30. By precisely controlling the dilution ratio, it can be ensured that during the measurement by the inductively coupled plasma mass spectrometer, the concentration of the sample solution is within the optimal detection range of the instrument, thereby improving the sensitivity and accuracy of measurement. The inductively coupled plasma mass spectrometer used for determination and analysis in the fourth step has high sensitivity and high selectivity, and can accurately measure the contents of rare earth elements and trace elements in the titanium ore sample. In addition, the inductively coupled plasma mass spectrometer can also measure multiple elements simultaneously, greatly improving the analysis efficiency. The software used for data processing in the fifth step can correct and analyze the measurement results of the inductively coupled plasma mass spectrometer to eliminate influencing factors such as matrix effect and instrument drift, so as to obtain more accurate element content data. Through software processing, rapid analysis and report generation of the measurement results can be realized, providing convenience for the quantitative analysis of ore elements. By setting up a high-pressure microwave digestion tank, since the digestion process is carried out in a closed high-pressure microwave digestion tank, the emission of harmful gases and waste liquid is reduced, and the impact on the environment is relatively small.
[0025] Example 3: A method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, as Figure 1 shown, specifically including the following steps: First step: Sample preparation: Crush the titanium ore sample to an appropriate particle size and accurately weigh a certain amount of the sample; Second step: Microwave digestion: Put the weighed sample into a special high-pressure microwave digestion tank, add an appropriate amount of digestion solution, and then put the digestion tank into a microwave digester for digestion; Third step: Cooling and dilution: After digestion is completed, take out the digestion tank and cool it to room temperature, then transfer the digestion solution to a volumetric flask and dilute it to the mark with deionized water; Fourth step: Determination and analysis: Use an inductively coupled plasma mass spectrometer to measure the diluted digestion solution, so as to obtain the contents of rare earth elements and trace elements in the titanium ore; Fifth step: Data processing: According to the instrument measurement results, use corresponding software for data processing to obtain the final element content data. The appropriate particle size in the first step is specifically 40 mesh, which can ensure that the sample has sufficient surface area to fully contact with the digestion solution, thereby improving the digestion efficiency and the accuracy of determination. The certain amount of the sample in the first step is specifically 0.8 grams. Such a sampling amount can ensure sufficient reaction between the sample and the digestion solution during microwave digestion, and at the same time avoid incomplete digestion caused by excessive sample amount. The special high-pressure microwave digestion tank in the second step is made of materials with high temperature resistance, high pressure resistance and corrosion resistance to ensure the safety and digestion effect of the digestion tank during microwave digestion. The digestion solution added in the second step specifically includes a mixed solution of nitric acid and hydrofluoric acid, and the ratio of nitric acid to hydrofluoric acid is 2:1. Nitric acid helps the preliminary decomposition of the sample, while hydrofluoric acid can effectively dissolve the silicate minerals in the sample, so that rare earth elements and trace elements can be released more completely. By optimizing the ratio of nitric acid to hydrofluoric acid, the digestion efficiency and the accuracy of determination can be further improved. The dilution ratio of diluting to the mark with deionized water in the third step is specifically 1:50. By precisely controlling the dilution ratio, it can be ensured that during the measurement by the inductively coupled plasma mass spectrometer, the concentration of the sample solution is within the optimal detection range of the instrument, thereby improving the sensitivity and accuracy of the measurement. The inductively coupled plasma mass spectrometer in the fourth step has high sensitivity and high selectivity, and can accurately measure the contents of rare earth elements and trace elements in the titanium ore sample. In addition, the inductively coupled plasma mass spectrometer can also measure multiple elements simultaneously, greatly improving the analysis efficiency. The software used for data processing in the fifth step can correct and analyze the measurement results of the inductively coupled plasma mass spectrometer to eliminate influencing factors such as matrix effect and instrument drift, so as to obtain more accurate element content data. Through software processing, rapid analysis and report generation of the measurement results can be realized, providing convenience for the quantitative analysis of ore elements.
[0026] Example 4: A method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, asFigure 1 As shown in the figure, it specifically includes the following steps: The first step: Sample preparation: Crush the titanium ore sample to an appropriate particle size and accurately weigh a certain amount of the sample; The second step: Microwave digestion: Put the weighed sample into a special high-pressure microwave digestion tank, add an appropriate amount of digestion solution, and then put the digestion tank into a microwave digester for digestion; The third step: Cooling and dilution: After digestion is completed, take out the digestion tank and cool it to room temperature, then transfer the digestion solution to a volumetric flask and dilute it to the mark with deionized water; The fourth step: Determination and analysis: Use an inductively coupled plasma mass spectrometer to measure the diluted digestion solution to obtain the contents of rare earth elements and trace elements in the titanium ore; The fifth step: Data processing: According to the measurement results of the instrument, use corresponding software for data processing to obtain the final element content data. The appropriate particle size in the first step is specifically 60 mesh, which can ensure that the sample has a sufficient surface area to fully contact the digestion solution, thereby improving the digestion efficiency and the accuracy of the measurement. The certain amount of the sample in the first step is specifically 0.9 grams. Such a sampling amount can ensure that the reaction between the sample and the digestion solution is sufficient during microwave digestion, and at the same time avoid the problem of incomplete digestion caused by too much sample. The special high-pressure microwave digestion tank in the second step is made of materials with high temperature resistance, high pressure resistance and corrosion resistance to ensure the safety and digestion effect of the digestion tank during microwave digestion. The digestion solution added in the second step specifically includes a mixed solution of nitric acid and hydrofluoric acid, and the ratio of nitric acid to hydrofluoric acid is 3:1. Nitric acid helps the preliminary decomposition of the sample, while hydrofluoric acid can effectively dissolve the silicate minerals in the sample, so that the rare earth elements and trace elements can be released more completely. By optimizing the ratio of nitric acid to hydrofluoric acid, the digestion efficiency and the accuracy of the measurement can be further improved. The dilution ratio of diluting to the mark with deionized water in the third step is specifically 1:80. By precisely controlling the dilution ratio, it can be ensured that during the measurement by the inductively coupled plasma mass spectrometer, the concentration of the sample solution is within the optimal detection range of the instrument, thereby improving the sensitivity and accuracy of the measurement. The inductively coupled plasma mass spectrometer in the fourth step has high sensitivity and high selectivity for determination and analysis, and can accurately measure the contents of rare earth elements and trace elements in the titanium ore sample. In addition, the inductively coupled plasma mass spectrometer can also measure multiple elements simultaneously, greatly improving the analysis efficiency. The software used for data processing in the fifth step can correct and analyze the measurement results of the inductively coupled plasma mass spectrometer to eliminate influencing factors such as matrix effect and instrument drift, so as to obtain more accurate element content data. Through software processing, rapid analysis and report generation of the measurement results can be realized, providing convenience for the quantitative analysis of ore elements.
[0027] Example 5: A method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, as Figure 1As shown in the figure, it specifically includes the following steps: The first step: Sample preparation: Crush the titanium ore sample to an appropriate particle size and accurately weigh a certain amount of the sample; The second step: Microwave digestion: Put the weighed sample into a special high-pressure microwave digestion tank, add an appropriate amount of digestion solution, and then place the digestion tank into a microwave digester for digestion; The third step: Cooling and dilution: After digestion is completed, take out the digestion tank and cool it to room temperature, then transfer the digestion solution to a volumetric flask and dilute it to the mark with deionized water; The fourth step: Determination and analysis: Use an inductively coupled plasma mass spectrometer to measure the diluted digestion solution to obtain the contents of rare earth elements and trace elements in the titanium ore; The fifth step: Data processing: According to the instrument measurement results, use corresponding software for data processing to obtain the final element content data. The appropriate particle size in the first step is specifically 80 mesh, which can ensure that the sample has sufficient surface area to fully contact with the digestion solution, thereby improving the digestion efficiency and the accuracy of the determination. The certain amount of the sample in the first step is specifically 1.0 gram. Such a sampling amount can ensure that the reaction between the sample and the digestion solution is sufficient during microwave digestion, and at the same time avoid the problem of incomplete digestion caused by too much sample. The special high-pressure microwave digestion tank in the second step is made of materials with high temperature resistance, high pressure resistance and corrosion resistance to ensure the safety and digestion effect of the digestion tank during microwave digestion. The digestion solution added in the second step specifically includes a mixed solution of nitric acid and hydrofluoric acid, and the ratio of nitric acid to hydrofluoric acid is 3:1. Nitric acid helps the preliminary decomposition of the sample, while hydrofluoric acid can effectively dissolve the silicate minerals in the sample, so that the rare earth elements and trace elements can be released more completely. By optimizing the ratio of nitric acid to hydrofluoric acid, the digestion efficiency and the accuracy of the determination can be further improved. The dilution ratio of diluting to the mark with deionized water in the third step is specifically 1:100. By precisely controlling the dilution ratio, it can be ensured that during the measurement by the inductively coupled plasma mass spectrometer, the concentration of the sample solution is within the optimal detection range of the instrument, thereby improving the sensitivity and accuracy of the measurement. The inductively coupled plasma mass spectrometer used for determination and analysis in the fourth step has high sensitivity and high selectivity, and can accurately measure the contents of rare earth elements and trace elements in the titanium ore sample. In addition, the inductively coupled plasma mass spectrometer can also measure multiple elements simultaneously, greatly improving the analysis efficiency. The software used for data processing in the fifth step can correct and analyze the measurement results of the inductively coupled plasma mass spectrometer to eliminate influencing factors such as matrix effect and instrument drift, so as to obtain more accurate element content data. Through software processing, rapid analysis and report generation of the measurement results can be realized, providing convenience for the quantitative analysis of ore elements.
[0028] Working principle of the present invention: Through the high-pressure microwave digestion technology, the complex mineral structure in the titanium ore sample can be effectively destroyed, releasing the rare earth elements and trace elements therein. Microwave digestion utilizes the thermal effect and non-thermal effect generated by microwave radiation, enabling the molecules in the digestion solution to be rapidly heated within an extremely short time, thereby accelerating the decomposition process of the sample. The high-pressure environment inside the microwave digestion instrument ensures that the digestion process proceeds under safe conditions, and at the same time, the high-pressure environment also helps to improve the digestion efficiency. During the microwave digestion process, a mixed solution of nitric acid and hydrofluoric acid is used as the digestion solution. Nitric acid first preliminarily decomposes the sample, destroying the organic matter and some inorganic substances in the sample, while hydrofluoric acid further dissolves the silicate minerals in the sample, releasing the rare earth elements and trace elements therein. By precisely controlling the ratio of nitric acid to hydrofluoric acid, the digestion process can be optimized to ensure that the target elements in the sample can be completely released, while avoiding corrosion of the instrument and environmental pollution. After digestion is completed, the digestion solution is cooled and transferred to a volumetric flask, and diluted to the scale with deionized water. The precise control of the dilution ratio ensures that the concentration of the sample solution is within the optimal detection range of the inductively coupled plasma mass spectrometer, thereby improving the sensitivity and accuracy of the determination. The inductively coupled plasma mass spectrometer is a high-sensitivity and high-selectivity analytical instrument, which can accurately determine the contents of rare earth elements and trace elements in the sample, and can simultaneously determine multiple elements, greatly improving the analysis efficiency. Finally, the measurement results of the inductively coupled plasma mass spectrometer are processed, corrected and analyzed through special software to eliminate influencing factors such as matrix effects and instrument drift, so as to obtain more accurate element content data. Software processing not only improves the accuracy of the measurement results, but also realizes the rapid analysis and report generation of the measurement results, providing convenience for the quantitative analysis of ore elements. Through the method of the present invention, the contents of rare earth elements and trace elements in titanium ore can be effectively determined, providing a scientific basis for the further processing and utilization of the ore.
[0029] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.
Claims
1. A method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion, characterized in that, Specifically, it includes the following steps: The first step: Sample preparation: Crush the titanium ore sample to an appropriate particle size and accurately weigh a certain amount of the sample; The second step: Microwave digestion: Put the weighed sample into a special high-pressure microwave digestion tank, add an appropriate amount of digestion solution, and then place the digestion tank into a microwave digester for digestion; The third step: Cooling and dilution: After digestion is completed, take out the digestion tank and cool it to room temperature, then transfer the digestion solution to a volumetric flask and dilute it to the mark with deionized water; The fourth step: Determination and analysis: Use an inductively coupled plasma mass spectrometer to measure the diluted digestion solution, so as to obtain the contents of rare earth elements and trace elements in the titanium ore; The fifth step: Data processing: According to the measurement results of the instrument, use corresponding software to process the data to obtain the final element content data.
2. The method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion according to claim 1, characterized in that: In the first step, the appropriate particle size is specifically between 10 mesh and 80 mesh.
3. The method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion according to claim 1, characterized in that: In the first step, the certain amount of the sample is specifically between 0.5 grams and 1.0 grams.
4. The method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion according to claim 1, characterized in that: The special high-pressure microwave digestion tank in the second step is made of materials with high temperature resistance, high pressure resistance and corrosion resistance.
5. The method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion according to claim 1, characterized in that: The digestion solution added in the second step specifically includes a mixed solution of nitric acid and hydrofluoric acid, and the ratio of nitric acid to hydrofluoric acid is between 1:1 and 3:
1.
6. The method for determining rare earth elements and trace elements in titanium ore by high-pressure microwave digestion according to claim 1, characterized in that: In the third step, the dilution ratio of diluting to the mark with deionized water is specifically between 1:10 and 1:100.