Method for rapidly determining content of main and secondary components in aluminate cement

Abstract

The application provides a method for rapidly determining the content of main and secondary components in aluminate cement, and belongs to the technical field of aluminate cement component detection. The method is based on wavelength dispersion X-ray fluorescence spectrometry, combined with specific sample preparation technology, and establishes a rapid analysis method for main components such as Al2O3, CaO, SiO2 and Fe2O3 and trace components such as MgO, TiO2 and K2O in aluminate cement. The method effectively overcomes the mineral effect and matrix effect, realizes non-destructive, rapid (less than 10 minutes / sample), multi-element synchronous quantitative analysis of aluminate cement, improves the accuracy and timeliness of the detection of cement materials in the factory, effectively reduces the detection and labor costs compared with the traditional chemical method, reduces the use of strong acid and strong base for analysis, and realizes the energy-saving and environment-friendly goal.

Description

Technical Field

[0001] This invention relates to the field of aluminate cement composition detection technology, specifically to a method for rapidly determining the content of primary and secondary components in aluminate cement. Background Technology

[0002] Aluminate cement (high-alumina cement) is a hydraulic cementitious material made primarily from bauxite or industrial aluminum-containing waste through a high-temperature calcination process, resulting in a material with calcium aluminate as the main mineral phase. Compared to ordinary cement, it does not contain silicate minerals such as C3S and C2S, thus exhibiting superior high-temperature resistance and chemical corrosion resistance. The main chemical components of this cement product are Al2O3 (50%-70%), CaO (30%-40%), and small amounts of SiO2 and Fe2O3. It possesses significant early strength characteristics, high heat of hydration, and excellent high-temperature resistance. Aluminate cement's outstanding resistance to sulfate attack makes it particularly suitable for biological sulfuric acid corrosion protection in wastewater treatment pipe networks. It also exhibits the following characteristics: excellent resistance to chloride ion penetration, good resistance to seawater erosion, outstanding resistance to soft water dissolution, strong resistance to grease corrosion, excellent low-temperature adaptability, and excellent resistance to alternating hot and cold temperatures.

[0003] In the production process of ductile iron pipes, aluminate cement-based mortar is used for the internal lining of the pipes. The Al2O3 content in aluminate cement is a crucial indicator, and its rapid and accurate detection is one of the measures to ensure product quality. Currently, the detection of the chemical composition of aluminate cement mainly relies on chemical analysis, with Al2O3 detection primarily using zinc sulfate back titration. Traditional chemical analysis methods (such as EDTA titration and atomic absorption spectrometry) are cumbersome and difficult to perform simultaneous multi-element detection. In contrast, X-ray fluorescence spectrometry (XRF) offers advantages such as ease of operation, high analytical efficiency, and accurate and reliable results, making it particularly suitable for rapid detection of large batches of raw materials and exhibiting good reproducibility. Although XRF is widely used in silicate cement composition analysis in existing literature, in-depth research on it is relatively limited.

[0004] Therefore, developing a rapid method for determining the content of primary and secondary components in aluminate cement has significant practical implications and market value. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a method for rapidly determining the content of primary and secondary components in aluminate cement. By optimizing the detection process of each step and establishing a gradient of standard sample compositions, this invention achieves non-destructive, rapid (less than 10 minutes / sample), and simultaneous quantitative analysis of multiple elements in aluminate cement, further improving the accuracy and timeliness of cement material testing upon arrival at the plant.

[0006] To achieve the above objectives, the specific technical solution of the present invention is as follows:

[0007] A method for rapidly determining the content of major and minor components in aluminate cement includes the following steps:

[0008] Accurately weigh the sample and flux according to the ratio, mix them evenly, and place them in a platinum-gold alloy crucible. Add 7-9 drops (approximately 0.05 mL per drop) of release agent. Place the platinum-gold alloy crucible in a preheated fully automatic melting furnace, preheat at 1050±50 ℃ for 180 s, melt the sample for 15 min, let it stand for 60 s, and cool it to room temperature to form a glass slab. Analyze the glass slab using an X-ray fluorescence spectrometer, and obtain the content of each component in the sample based on the X-ray intensity and standard curve.

[0009] Furthermore, the sample is obtained by drying, cooling, and grinding the original aluminate cement sample to be tested. Drying involves drying the sample at 105-110 °C for at least 2 hours to remove adhering water and some crystal water, preventing splashing and bubble generation due to violent evaporation of moisture during high-temperature melting, while ensuring accurate weighing. Cooling involves immediately placing the dried sample in a desiccator to cool to room temperature to avoid re-absorbing moisture. Grinding involves grinding the cooled sample in a tungsten carbide grinding jar for approximately 90 seconds. The grinding time should not be too long to prevent overheating or sample agglomeration. Generally, grinding to a particle size of less than 75 micrometers (200 mesh) can improve the uniformity and representativeness of the sample. Too coarse a particle size will lead to incomplete melting and poor uniformity, affecting analytical accuracy; excessive grinding may introduce contamination or alter the mineral structure.

[0010] Furthermore, the demolding temperature of the glass sheet is 20-30 ℃, and it meets the following quality requirements: diameter 32±0.5 mm, thickness 5±0.2 mm, and no crystallization or bubble defects on the surface.

[0011] Furthermore, the mass ratio of the sample to the flux is 1:(6-12), and the error range for both the sample and the flux is ±0.0002 g. Ammonium bromide has a milder odor and weaker corrosiveness than ammonium iodide. The basic principle for selecting ammonium bromide as a release agent is "less and more uniform," using as little as possible so that demolding can proceed smoothly; the amount is easier to control in solution than in powder.

[0012] Furthermore, the mass ratio of the sample to the flux is 1:10. The ratio of sample to flux (dilution ratio) has a significant impact on the quality of the glass melt. When the dilution ratio exceeds 1:12, it leads to excessively low sample density and melt overflow, while also reducing the sensitivity of trace element detection. Conversely, a ratio below 1:6 results in uneven melting and unmelted impurities. This invention, through a systematic investigation of the 1:(6-12) dilution range, ultimately determined 1:10 to be the optimal dilution ratio.

[0013] Furthermore, the flux is a mixture of anhydrous lithium tetraborate (Li2B4O7) and lithium metaborate (LiBO2) in a mass ratio of 67:33.

[0014] Furthermore, the release agent is a saturated solution of ammonium bromide. Controlling the amount of release agent used is crucial; too much (>9 drops) will cause the melt sheet to crack, while too little (<7 drops) will result in incomplete demolding. Optimization has determined that 7-9 drops is the optimal addition amount.

[0015] Furthermore, a metered dispenser is used to add the release agent, with the metered dispenser having a range of 20-200 μL.

[0016] Furthermore, the specifications of the platinum-gold alloy crucible are: 95% platinum / 5% gold, 30 mL. The method described in this invention has strict requirements for the platinum-gold alloy crucible used. In terms of composition, the platinum-gold alloy crucible must contain 95% platinum and 5% gold, with a platinum purity of ≥99.95% and a gold purity of ≥99.99%. In terms of structure and size, the platinum-gold alloy crucible must be bowl-shaped or hemispherical with a smooth bottom to facilitate melt flow, mixing, and final pouring into the mold. Its size and capacity must match the melting furnace, mold, and sample volume. High dimensional tolerances are required to ensure good matching with the heater (high-frequency induction coil or muffle furnace support) and uniform heating. The wall thickness of the platinum-gold alloy crucible must be uniform and moderate (usually 1-1.5 mm); too thin and it is prone to deformation and damage, too thick and heat conduction is slow and energy consumption is high. In terms of manufacturing process, the platinum-gold alloy crucible must be integrally formed, and the inner and outer surfaces should be highly polished and smooth as a mirror.

[0017] Furthermore, a platinum-gold alloy crucible was placed in a preheated fully automated melting furnace, preheated at 1050 °C for 180 s, melted for 15 min, allowed to stand for 60 s, and cooled to room temperature to produce a glass sheet. The choice of melting temperature directly affects the quality of the glass sheet. Through experimental comparison within the temperature range of 1050 ± 50 °C, this invention found that 1050 °C can ensure that the iron raw material is completely melted without overheating defects.

[0018] Furthermore, the standard curve is established as follows: standard glass slabs of gradient standard samples are prepared using the same method, and analyzed using an X-ray fluorescence spectrometer. The standard values ​​of the standard samples (i.e., the content of different components in the standard samples) are used as the abscissa and the characteristic X-ray intensity is used as the ordinate. The least squares method is used to establish the quantitative analysis standard curve of each element. At the same time, theoretical coefficients are applied to correct for matrix effects to ensure the accuracy of the analysis results.

[0019] Furthermore, the gradient standard samples are prepared by mixing national first-grade aluminate cement standard materials GSB 08-1355-2017, GBW 03203b, GSB 08-1533-2014 and high-purity aluminum standard material GSB 04-1820-2005 in different proportions. This invention utilizes several existing standard materials and, through precise physical mixing, can prepare a set of gradient standard samples covering a specific compositional range (especially the high-alumina region). Using only national first-grade aluminate cement standard materials GSB 08-1355-2017, GBW 03203b, and GSB 08-1533-2014, it is difficult to form high-alumina gradient calibration standards. By further introducing GSB 04-1820-2005, which has an Al2O3 content as high as 98.5%, and combining it with national first-grade aluminate cement standard materials GSB 08-1355-2017, GBW 03203b, and GSB 08-1533-2014, a higher range of aluminate cement standard samples can be prepared.

[0020] Furthermore, the X-ray fluorescence spectrometer is required to have: a rhodium target X-ray tube, a beryllium window (Be) thickness ≤ 50 μm, and a power > 4 kW.

[0021] Furthermore, the measurement conditions for each component using an X-ray fluorescence spectrometer (ARL 9900 model) are as follows:

[0022]

[0023] Furthermore, the determination range of the method is as follows: Al2O3: 44.78%-71.58%, SiO2: 4.71%-21.46%, Fe2O3: 1.53%-3.2%, TiO2: 0.18%-2.12%, CaO: 19.33%-65.71%, MgO: 0.32%-2.11%, K2O: 0.13%-0.80%.

[0024] In the determination of aluminate cement composition, the different crystal structures or chemical forms of minerals in the test sample lead to differences in the X-ray fluorescence intensity of the same element in different minerals, which is known as the mineral effect. To overcome the influence of the mineral effect, this invention melts the sample with a borate flux at a high temperature (1050±50 ℃), transforming the sample into a homogeneous glass slide and eliminating differences in mineral structure; at the same time, it ensures that the melting temperature and time are sufficient (melting for 15 min) to avoid residual unmelted minerals. The absorption or enhancement effect of other elements in the test sample on the fluorescence intensity of the target element is known as the matrix effect. To overcome the influence of matrix effects, this invention strictly controls the mass ratio of sample to flux to be 1:(6-12) to reduce the concentration of matrix elements. Simultaneously, a light flux (Li2B4O7) is used to balance absorption differences. Furthermore, when establishing the standard curve, an empirical coefficient method is employed, using standard samples to establish a matrix interference correction formula. The theoretical α coefficient method is used to calculate the theoretical influence coefficient using software (e.g., the FP method). In addition, this invention uses standard samples with a matrix similar to the sample to be tested, and employs a mathematical model to subtract background and optimizes the peak-splitting algorithm to handle overlapping spectral lines (e.g., Ti Kβ and V Kα overlap), effectively eliminating the influence of matrix effects.

[0025] Compared with the prior art, the advantages of the present invention are:

[0026] (1) Since the standard samples for aluminate cement are relatively limited and existing purchased standard samples cannot meet the requirements for plotting a gradient standard curve using X-ray fluorescence, this invention uses national first-grade aluminate cement standard materials GSB 08-1355-2017, GBW03203b, GSB 08-1533-2014 and high-purity aluminum standard material GSB 04-18202005, mixed in different proportions to form a gradient calibration standard sample. The addition of high-purity aluminum minimizes interference with other elements. When the same sample was repeatedly measured using the method of this invention, the elemental deviations were all less than the specified limits, and the relative standard deviation (RSD) was <2.5%, indicating that the standard curve established under the conditions of this invention has good precision. When the X-ray intensity values ​​of known samples were substituted into the standard curve, the results obtained were within acceptable error ranges compared to the true values, indicating that the standard curve established under the conditions of this invention has good accuracy and fully meets the requirements for rapid analysis of the main and secondary components of aluminate cement.

[0027] (2) Based on wavelength dispersive X-ray fluorescence spectroscopy and combined with a specific melting sample preparation process, this invention establishes a rapid and accurate analytical method for major components such as Al2O3, CaO, SiO2, and Fe2O3, as well as trace components such as MgO, TiO2, and K2O in aluminate cement. Specifically, by optimizing the melting temperature (1050 ℃), dilution ratio (1:10), and Li2B4O7-LiBO2 mixed flux system, this invention effectively overcomes the mineral effect and matrix effect, achieving non-destructive, rapid (less than 10 minutes / sample), and simultaneous quantitative analysis of multiple elements in aluminate cement. This improves the accuracy and timeliness of cement material testing upon arrival at the plant. Compared with traditional chemical methods, it effectively reduces testing and labor costs, reduces the use of strong acids and alkalis in analysis, and achieves the goal of energy conservation and environmental protection. Attached Figure Description

[0028] Figure 1 A photograph of a standard sample and flux mixed evenly and placed in a platinum-gold alloy crucible;

[0029] Figure 2 A photograph of a standard sample fused sheet;

[0030] Figure 3 The standard curve for Al2O3;

[0031] Figure 4 The standard curve for SiO2;

[0032] Figure 5 The standard curve for Fe2O3;

[0033] Figure 6 The standard curve for TiO2;

[0034] Figure 7 The standard curve for CaO;

[0035] Figure 8 The standard curve for MgO;

[0036] Figure 9 The standard curve for K2O;

[0037] Figure 10 Photograph of a glass sheet (8 drops of release agent, 1050 °C) prepared using the method of the present invention. Detailed Implementation

[0038] To enable those skilled in the art to clearly and completely understand the technical solution of the present invention, the present invention will be further described in detail below with reference to embodiments. Obviously, the embodiments described herein are only for explaining the present invention and are not intended to limit the scope of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] This invention provides a method for rapidly determining the content of major and minor components in aluminate cement, comprising the following steps: accurately weighing the sample and flux in a ratio of 1:(6-12), mixing them evenly, and placing them in a platinum-gold alloy crucible, adding 7-9 drops (approximately 0.05 mL per drop) of release agent; placing the platinum-gold alloy crucible in a preheated fully automatic melting furnace, preheating at 1050±50 ℃ for 180 s, melting the sample for 15 min, letting it stand for 60 s, and cooling it to room temperature to prepare a glass slab; analyzing the glass slab using an X-ray fluorescence spectrometer, and obtaining the content of each component in the sample based on the X-ray intensity and standard curve.

[0040] In the following specific embodiments, the sample is obtained by drying, cooling and grinding the original aluminate cement sample to be tested; the drying is to dry the sample at 105-110 ℃ for at least 2 h; the cooling is to immediately place the dried sample in a desiccator to cool to room temperature to avoid re-absorbing moisture; the grinding is to grind the cooled sample in a tungsten carbide grinding jar for about 90 seconds until the particle size is less than 75 micrometers (200 mesh).

[0041] In the following specific embodiments, the standard curve is plotted as follows:

[0042] 1. Preparation of gradient standard samples

[0043] Because the standard samples for aluminate cement are relatively limited and existing purchased standard samples cannot meet the requirements for plotting a gradient standard curve using X-ray fluorescence, this invention uses national first-grade aluminate cement standard materials GSB 08-1355-2017, GBW03203b, GSB 08-1533-2014 and high-purity aluminum GSB 04-18202005, mixed in different proportions to form gradient standard samples for establishing a fluorescence melting standard curve for aluminate cement. The chemical composition (%) of the national first-grade aluminate cement standard materials GSB 08-1355-2017, GBW 03203b, GSB 08-1533-2014 and high-purity aluminum GSB 04-18202005, as well as the chemical composition (%) of the prepared gradient standard samples, are as follows:

[0044]

[0045] 2. Preparation of the fused sheet

[0046] (1) Accurately weigh 0.7±0.0002 g of standard sample and 7±0.0002 g of flux, wherein the flux is a mixture of anhydrous lithium tetraborate and lithium metaborate in a mass ratio of 67:33;

[0047] (2) Mix the standard sample with the flux until homogeneous, and transfer it to a specially made platinum-gold alloy crucible (Pt 95% / Au5%, 30 mL) (e.g.) Figure 1 As shown in the figure, accurately add 8 drops (approximately 0.4 mL) of saturated ammonium bromide solution (NH4Br analytical grade) as a release agent using a quantitative dispenser;

[0048] (3) Place the platinum-gold alloy crucible in a preheated 1050 ℃ fully automatic melting furnace, preheat at 1050 ℃ for 180 s, melt the sample for 15 min, let it stand for 60 s, and cool to room temperature to make a standard glass melt with a diameter of 32±0.5 mm and a thickness of 5±0.2 mm. The surface of the standard glass melt is free of crystallization and bubble defects. A radiation protection label (containing sample name, number, date, etc.) is affixed to the non-measuring surface (e.g., Figure 2 (As shown).

[0049] 3. Draw the standard curve

[0050] The standard glass flakes were analyzed using an ARL 9900 X-ray fluorescence spectrometer. The measurement conditions for each component were as follows:

[0051]

[0052] Using the content of each component in the standard sample as the x-axis and the characteristic X-ray intensity as the y-axis, a quantitative analysis standard curve for each element was established using the least squares method. Simultaneously, the theoretical α coefficient was applied for matrix effect correction to ensure the accuracy of the analytical results, which were then used to determine unknown samples. The standard curves for Al2O3, SiO2, Fe2O3, TiO2, CaO, MgO, and K2O are shown below. Figure 3-9 As shown in the figure, the linear relationship of each standard curve is good, and the linear correlation coefficient (R0) of each component standard curve is high. 2 The measurement range is as follows:

[0053]

[0054] Example 1

[0055] A rapid method for determining the content of major and minor components in aluminate cement

[0056] 1. The effect of mold release agent dosage on glass melts

[0057] (1) Accurately weigh 0.7±0.0002 g of the sample to be tested and 7±0.0002 g of flux, wherein the flux is a mixture of anhydrous lithium tetraborate and lithium metaborate in a mass ratio of 67:33;

[0058] (2) Mix the sample to be tested with the flux evenly and transfer it to a special platinum-gold alloy crucible. Use a metering dispenser to accurately add 2-20 drops (about 0.05 mL per drop) of saturated ammonium bromide solution as a release agent.

[0059] (3) Place the platinum-gold alloy crucible in a preheated fully automatic melting furnace, preheat at 1050 ℃ for 180 s, melt the sample for 15 min, let it stand for 60 s, and cool it to room temperature to make a glass sheet with a diameter of 32±0.5 mm and a thickness of 5±0.2 mm.

[0060] The following are glass flakes prepared using different amounts of release agent:

[0061]

[0062]

[0063] 2. The effect of melting temperature on glass melting sheets

[0064] (1) Accurately weigh 0.7±0.0002 g of the sample to be tested and 7±0.0002 g of flux, wherein the flux is a mixture of anhydrous lithium tetraborate and lithium metaborate in a mass ratio of 67:33;

[0065] (2) Mix the sample to be tested with the flux evenly and transfer it to a special platinum-gold alloy crucible. Use a metering dispenser to accurately add 8 drops (about 0.4 mL) of saturated ammonium bromide solution as a release agent.

[0066] (3) Place the platinum-gold alloy crucible in a preheated fully automatic melting furnace, preheat at 900-1150 ℃ for 180 s, melt the sample for 15 min, let it stand for 60 s, and cool it to room temperature to make a glass sheet with a diameter of 32±0.5 mm and a thickness of 5±0.2 mm.

[0067] The glass flakes prepared using different melting temperatures are shown below:

[0068]

[0069]

[0070] 3. Precision test / stability test

[0071] (1) Accurately weigh 0.7±0.0002 g of the sample to be tested (the composition content is known) and 7±0.0002 g of flux, wherein the flux is a mixture of anhydrous lithium tetraborate and lithium metaborate in a mass ratio of 67:33;

[0072] (2) Mix the sample to be tested with the flux evenly and transfer it to a special platinum-gold alloy crucible. Use a metering dispenser to accurately add 8 drops (about 0.4 mL) of saturated ammonium bromide solution as a release agent.

[0073] (3) Place the platinum-gold alloy crucible in a preheated fully automatic melting furnace, preheat at 1000-1150 ℃ for 180 s, melt the sample for 15 min, let it stand for 60 s, and cool to room temperature to produce a glass slab with a diameter of 32±0.5 mm and a thickness of 5±0.2 mm; the slab falls off easily with a light tap, the surface of the slab is smooth like a mirror, without white spots or cloudy residue, and the slab is clear without bubbles. Figure 10 );

[0074] (4) The glass molten sheet was analyzed by X-ray fluorescence spectrometry. The content of each component in the sample was calculated based on the X-ray intensity and standard curve.

[0075] The component contents of the sample to be tested with known component contents are as follows:

[0076]

[0077] The precision / stability test results at different melting temperatures are as follows:

[0078]

[0079]

[0080] Comparative Example 1

[0081] (1) Accurately weigh 0.7±0.0002 g of the sample to be tested (the composition content is known) and 7±0.0002 g of flux, wherein the flux is a mixture of anhydrous lithium tetraborate and lithium metaborate in a mass ratio of 67:33;

[0082] (2) Mix the sample to be tested with the flux evenly and transfer it to a special platinum-gold alloy crucible. Use a metering dispenser to accurately add 20 drops (about 1 mL) of saturated ammonium bromide solution as a release agent.

[0083] (3) Place the platinum-gold alloy crucible in a preheated fully automatic melting furnace, preheat at 1050 ℃ for 180 s, melt the sample for 15 min, let it stand for 60 s, and cool it to room temperature to make a glass sheet with a diameter of 32±0.5 mm and a thickness of 5±0.2 mm.

[0084] (4) The glass fusion sheet was analyzed using an X-ray fluorescence spectrometer. Based on the X-ray intensity and standard curve, the content of each component in the sample was calculated, as shown below:

[0085]

[0086] As shown in the table above, excessive use of ammonium bromide saturated solution will seriously affect the content of calcium and magnesium elements in the sample to be tested, and the measurement error will exceed 40%.

[0087] The above detailed embodiments describe the implementation of the present invention; however, the present invention is not limited to the specific details described in the above embodiments. Within the scope of the claims and technical concept of the present invention, various simple modifications and changes can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

Claims

1. A method for rapidly determining the content of primary and secondary components in aluminate cement, characterized in that, Includes the following steps: Accurately weigh the sample and flux according to the ratio, mix them evenly, and place them in a platinum-gold alloy crucible. Add 7-9 drops of release agent. Place the platinum-gold alloy crucible in a preheated fully automatic melting furnace, preheat at 1050±50 ℃ for 180 s, melt the sample for 15 min, let it stand for 60 s, and cool it to room temperature to make a glass slab. Analyze the glass slab using an X-ray fluorescence spectrometer, and obtain the content of each component in the sample according to the X-ray intensity and standard curve.

2. The method for rapidly determining the content of major and minor components in aluminate cement according to claim 1, characterized in that, The demolding temperature of the glass sheet is 20-30 ℃, and it meets the following quality requirements: diameter 32±0.5 mm, thickness 5±0.2 mm, and no crystallization or bubble defects on the surface.

3. The method for rapidly determining the content of primary and secondary components in aluminate cement according to claim 1, characterized in that, The mass ratio of the sample to the flux is 1:(6-12), and the error range of both the sample and the flux is ±0.0002 g.

4. The method for rapidly determining the content of primary and secondary components in aluminate cement according to claim 1, characterized in that, The flux is a mixture of anhydrous lithium tetraborate and lithium metaborate in a mass ratio of 67:

33.

5. The method for rapidly determining the content of major and minor components in aluminate cement according to claim 1, characterized in that, The release agent is a saturated solution of ammonium bromide.

6. The method for rapidly determining the content of major and minor components in aluminate cement according to claim 1, characterized in that, Platinum-gold alloy crucibles were placed in a preheated fully automated melting furnace, preheated at 1050 ℃ for 180 s, melted for 15 min, left to stand for 60 s, and cooled to room temperature to produce glass flakes.

7. The method for rapidly determining the content of primary and secondary components in aluminate cement according to claim 1, characterized in that, The standard curve is established as follows: standard glass slides of standard samples are prepared using the same method, and analyzed using an X-ray fluorescence spectrometer. The standard sample values ​​are plotted on the x-axis and the characteristic X-ray intensity is plotted on the y-axis. The least squares method is used to establish the quantitative analysis standard curves for each element. At the same time, theoretical coefficients are applied to correct for matrix effects to ensure the accuracy of the analysis results.

8. The method for rapidly determining the content of primary and secondary components in aluminate cement according to claim 1, characterized in that, The determination range of the method is as follows: Al2O3: 44.78%-71.58%, SiO2: 4.71%-21.46%, Fe2O3: 1.53%-3.2%, TiO2: 0.18%-2.12%, CaO: 19.33%-65.71%, MgO: 0.32%-2.11%, K2O: 0.13%-0.80%.

9. The method for rapidly determining the content of major and minor components in aluminate cement according to claim 1, characterized in that, The X-ray fluorescence spectrometer is required to have a rhodium target X-ray tube, a beryllium window thickness ≤ 50 μm, and a power > 4 kW.

10. The method for rapidly determining the content of primary and secondary components in aluminate cement according to claim 9, characterized in that, The measurement conditions for each component using X-ray fluorescence spectrometry are as follows: 。

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