Method for predicting viscosity of glass melt or borosilicate glass solidified body generated by high-level liquid waste glass solidification

Abstract

The invention belongs to the technical field of high-level liquid waste glass curing treatment, and particularly relates to a method for predicting the viscosity of a glass melt or a borosilicate glass cured body generated by high-level liquid waste glass curing. According to a formula (1), the viscosity of a preparation raw material of borosilicate glass and high-level liquid waste or a glass melt or a borosilicate glass solidified body formed by simulating the high-level liquid waste under a high-temperature condition is predicted, and the temperature of the high-temperature condition is greater than or equal to 950 DEG C. The method provided by the invention can accurately predict the viscosity of the glass melt or the borosilicate glass solidified body under the high-temperature condition, can predict the high-temperature viscosity in the high-level liquid waste glass solidification process, and accelerates the adjustment and optimization of a borosilicate glass solidification formula.

Description

Technical Field

[0001] This invention belongs to the field of high-level radioactive waste liquid glass solidification treatment technology, specifically relating to a method for predicting the viscosity of glass melt or borosilicate glass solidified body generated by high-level radioactive waste liquid glass solidification. Background Technology

[0002] Nuclear energy, as an efficient and clean energy source, has seen rapid development in recent years. However, this has also led to the generation of large quantities of high-level radioactive waste. Due to its high radioactivity levels, high radiotoxicity, and long half-lives of radionuclides, leaks can cause radioactive pollution of soil, atmosphere, and water bodies, endangering human and biosphere safety. Therefore, timely and proper handling and disposal of nuclear waste has become a current international research hotspot and focus of attention.

[0003] The vitrification of high-level radioactive waste liquids has made great progress over the past few decades. Borosilicate glass, in particular, is widely used in various countries due to its advantages such as broad elemental compatibility, good chemical stability, and simple production process.

[0004] The viscosity of borosilicate glass melt is closely related to the melt temperature and is the most important parameter affecting glass forming performance and melting rate. Viscosity determines the raw material melting feed rate, the removal of bubbles in the glass melt, and melt homogenization, ultimately affecting the quality of the glass product. If the melt viscosity is too low, the glass melt convection intensifies, increasing corrosion of furnace and electrode materials and making furnace control more difficult. If the melt viscosity is too high, glass discharge becomes more difficult, and voids are more likely to be incorporated into the final glass product.

[0005] In the vitrification of high-level radioactive waste liquids, accurate prediction of viscosity data is crucial for ensuring its compatibility with specific electric furnace operating parameters. The viscosity of molten glass intrinsically determines its flow behavior and heat transfer characteristics within the electric furnace, directly affecting the convection intensity, homogenization efficiency, and discharge rate stability within the molten pool. Changes in viscosity characteristics caused by formulation variations significantly impact electrode power distribution, hotspot locations, and the final temperature and flow field structures. Therefore, viscosity measurement is a core technical step for achieving predictable and stable operation of new formulations in electric furnaces, providing a quantitative basis for optimizing process windows and ensuring operational safety and energy efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a method for predicting the viscosity of glass melt or borosilicate glass solidified body produced by glass curing of high-level radioactive waste liquid. The method provided by this invention can accurately predict the viscosity of glass melt or borosilicate glass solidified body formed by borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid under high-temperature conditions. It can predict the viscosity during the curing process of borosilicate glass from high-level radioactive waste liquid, and accelerate the adjustment and optimization of glass curing formula.

[0007] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a method for predicting the viscosity of a glass melt generated during the glass solidification process of high-level radioactive waste liquid. The glass melt is formed from borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid. The glass melt comprises the following components by mass fraction, based on oxides and high-level radioactive waste liquid or simulated high-level radioactive waste liquid: SiO2 35~60%, B2O3 5~20%, Na2O 5~20%, Li2O 0~5%, Al2O3 0~10%, CaO 0~10%, MgO 0~5%, BaO 0~5%, ZnO 0~5%, Sb2O5 0~5%, TiO2 0~5%, and high-level radioactive waste liquid or simulated high-level radioactive waste liquid 12~22%. The viscosity of the glass melt under high temperature conditions is predicted according to formula (1), wherein the temperature of the high temperature conditions is ≥950℃; η=L+ Formula (1); In formula (1): η is the viscosity of the glass melt under high temperature conditions, with units of dPa·s. Let be the influence coefficient of the i-th component in the glass melt on the viscosity of the glass melt under high temperature conditions, with units of dPa·s. denoted as , where is the mass fraction of the i-th component in the glass melt, expressed as %; and L is a constant term, expressed as dPa·s.

[0008] This invention provides a method for predicting the high-temperature viscosity of a borosilicate glass cured body obtained by glass curing of high-level radioactive waste liquid. The borosilicate glass cured body is formed from borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid. The borosilicate glass cured body comprises the following components by mass fraction, based on oxides and high-level radioactive waste liquid or simulated high-level radioactive waste liquid: SiO2 35~60%, B2O3 5~20%, Na2O 5~20%, Li2O 0~5%, Al2O3 0~10%, CaO 0~10%, MgO 0~5%, BaO 0~5%, ZnO 0~5%, Sb2O5 0~5%, TiO2 0~5%, and high-level radioactive waste liquid or simulated high-level radioactive waste liquid 12~22%. The viscosity of the borosilicate glass cured body under high temperature conditions is predicted according to formula (1), wherein the temperature of the high temperature conditions is ≥950℃; η=L+ Formula (1) In formula (1): η is the viscosity of the borosilicate glass cured body under high temperature conditions, in dPa·s. Let be the influence coefficient of the i-th component in the borosilicate glass cured body on the viscosity of the borosilicate glass cured body under high temperature conditions, with units of dPa·s. denoted as , where is the mass fraction of the i-th component in the glass melt, expressed as %; and L is a constant term, expressed as dPa·s.

[0009] Preferably, the high-temperature condition is 950°C or 1150°C.

[0010] Preferably, when the high-temperature condition is 950℃, the influence coefficients are as follows: SiO2 is 41.58 dPa·s, B2O3 is 15.17 dPa·s, Na2O is -1.32 dPa·s, Li2O is -122.40 dPa·s, Al2O3 is 27.72 dPa·s, CaO is -9.04 dPa·s, MgO is -6.92 dPa·s, BaO is 2.08 dPa·s, ZnO is 6.39 dPa·s, Sb2O5 is 11.93 dPa·s, TiO2 is 3.07 dPa·s, the influence coefficient of the simulated high-level radioactive waste liquid is -3.55 dPa·s, and L is -1410.84 dPa·s.

[0011] Preferably, when the high-temperature condition is 1150℃, the influence coefficients are as follows: SiO2 is 4.20 dPa·s, B2O3 is 1.53 dPa·s, Na2O is 0.17 dPa·s, Li2O is -9.07 dPa·s, Al2O3 is 3.42 dPa·s, CaO is -1.19 dPa·s, MgO is -0.38 dPa·s, BaO is 0.64 dPa·s, ZnO is 0.72 dPa·s, Sb2O5 is 2.52 dPa·s, TiO2 is 0.04 dPa·s, the influence coefficient of the simulated high-level radioactive waste liquid is -0.75 dPa·s, and L is -144.52 dPa·s.

[0012] Preferably, the raw materials for preparing the borosilicate glass include oxides and / or carbonates.

[0013] Preferably, the oxides include SiO2 and B2O3; the carbonates include Na2CO3.

[0014] Preferably, the oxide further includes one or more of Al2O3, MgO, ZnO, Sb2O5 and TiO2; the carbonate further includes one or more of Li2CO3, CaCO3 and BaCO3.

[0015] This invention provides a method for predicting the viscosity of the glass melt generated during the vitrification process of high-level radioactive waste liquid, and a method for predicting the high-temperature viscosity of the borosilicate glass cured body obtained from the vitrification of high-level radioactive waste liquid. In this invention, the glass melt generated during the vitrification process of high-level radioactive waste liquid refers to the glass melt melted in an engineering furnace. The viscosity prediction of this glass melt can guide the engineering process of vitrification of high-level radioactive waste liquid. In this invention, the borosilicate glass cured body obtained from the vitrification of high-level radioactive waste liquid refers to a borosilicate glass cured body sample prepared in the laboratory. The viscosity prediction of this borosilicate glass cured body guides laboratory research on the vitrification process of high-level radioactive waste liquid.

[0016] The method provided by this invention can accurately predict the viscosity of glass melt or borosilicate glass solidified body under high temperature conditions, and can predict the viscosity of borosilicate glass solidified high radioactive waste liquid glass during the process, thereby accelerating the adjustment and optimization of glass solidification formula.

[0017] This invention prepares borosilicate glass and high-level radioactive waste liquid or simulated high-level radioactive waste liquid in a laboratory crucible. The melting temperature is typically 1150-1200℃, held for 3-4 hours, then poured, followed by holding at 550℃ for 2 hours and then at 450℃ for 2 hours, finally obtaining a glass-cured sample (at which point the waste liquid is already present in the sample). This invention predicts the viscosity of the borosilicate glass curing body under high-temperature conditions according to formula (1), and can determine the appropriate composition of the borosilicate glass curing body based on its viscosity under high-temperature conditions. When applied to the above-mentioned scenarios, this invention can shorten the optimization time of the formulation during the preparation of borosilicate glass curing bodies.

[0018] In actual engineering operations, borosilicate glass and high-level radioactive waste liquid are melted in an electric furnace to obtain glass melt. The viscosity of the glass melt in the electric furnace can be predicted using formula (1), which can guide the furnace operation process.

[0019] The practical application of the method for predicting the high-temperature viscosity of borosilicate glass solidified body provided by the present invention is as follows: when adjusting the proportion of raw materials for preparing borosilicate glass and high-level radioactive waste liquid or simulated high-level radioactive waste liquid, the prediction method provided by the present invention is used to predict the high-temperature viscosity of glass melt or borosilicate glass solidified body. Based on the predicted viscosity change, appropriate proportions of raw materials for preparing borosilicate glass and high-level radioactive waste liquid are selected according to the actual process conditions. Detailed Implementation

[0020] This invention provides a method for predicting the viscosity of a glass melt generated during the glass solidification process of high-level radioactive waste liquid. The glass melt is formed from borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid. The glass melt comprises the following components by mass fraction, based on oxides and high-level radioactive waste liquid or simulated high-level radioactive waste liquid: SiO2 35~60%, B2O3 5~20%, Na2O 5~20%, Li2O 0~5%, Al2O3 0~10%, CaO 0~10%, MgO 0~5%, BaO 0~5%, ZnO 0~5%, Sb2O5 0~5%, TiO2 0~5%, and high-level radioactive waste liquid or simulated high-level radioactive waste liquid 12~22%. The viscosity of the glass melt under high temperature conditions is predicted according to formula (1), wherein the temperature of the high temperature conditions is ≥950℃; η=L+ Formula (1); In formula (1): η is the viscosity of the glass melt under high temperature conditions, with units of dPa·s. Let be the influence coefficient of the i-th component in the glass melt on the viscosity of the glass melt under high temperature conditions, with units of dPa·s. denoted as , where is the mass fraction of the i-th component in the glass melt, expressed as %; and L is a constant term, expressed as dPa·s.

[0021] This invention provides a method for predicting the high-temperature viscosity of a borosilicate glass cured body obtained by glass curing of high-level radioactive waste liquid. The borosilicate glass cured body is formed from borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid. The borosilicate glass cured body comprises the following components by mass fraction, based on oxides and high-level radioactive waste liquid or simulated high-level radioactive waste liquid: SiO2 35~60%, B2O3 5~20%, Na2O 5~20%, Li2O 0~5%, Al2O3 0~10%, CaO 0~10%, MgO 0~5%, BaO 0~5%, ZnO 0~5%, Sb2O5 0~5%, TiO2 0~5%, and high-level radioactive waste liquid or simulated high-level radioactive waste liquid 12~22%. The viscosity of the borosilicate glass cured body under high temperature conditions is predicted according to formula (1), wherein the temperature of the high temperature conditions is ≥950℃; η=L+ Formula (1) In formula (1): η is the viscosity of the borosilicate glass cured body under high temperature conditions, in dPa·s. Let be the influence coefficient of the i-th component in the borosilicate glass cured body on the viscosity of the borosilicate glass cured body under high temperature conditions, with units of dPa·s. denoted as , where is the mass fraction of the i-th component in the glass melt, expressed as %; and L is a constant term, expressed as dPa·s.

[0022] In this invention, unless otherwise specified, all raw materials / components used in the preparation are commercially available products well known to those skilled in the art.

[0023] In this invention, the glass melt or the borosilicate glass cured body comprises the following components by mass fraction, based on oxides and high-level radioactive waste liquid or simulated high-level radioactive waste liquid: SiO2 35-60%, preferably 40-50%, more preferably 41-48%; B2O 35-20%, preferably 10-20%, more preferably 10-15%; Na2O 5-20%, preferably 6-15%, more preferably 8-12%; Li2O 0-5%, preferably 1-4%, more preferably 2-3%; Al2O 30-10%, preferably 1-6%, more preferably 2-5%; CaO 0-10%, preferably 3-10%, more preferably 4.5-10%; MgO 0-5%, preferably 0-3%, more preferably 0-2%; BaO 0-5%, preferably 0-3%, more preferably 0.5-2.5%; ZnO 0~5%, preferably 0~3%, more preferably 0~2.5%; Sb2O5 0~5%, preferably 0~1%, more preferably 0~0.5%; TiO2 0~5%, preferably 0~2.5%, more preferably 0.5~2%; simulated high-level radioactive waste liquid or high-level radioactive waste liquid 12~22%.

[0024] In this invention, the glass melt or borosilicate glass solidified body is formed from borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid. Based on oxides, the SiO2, B2O3, Na2O, Li2O, Al2O3, CaO, MgO, BaO, ZnO, Sb2O5, and TiO2 in the glass melt originate from the borosilicate glass preparation raw materials.

[0025] In this invention, the temperature of the high-temperature condition is preferably 950°C or 1150°C.

[0026] In this invention, when the high-temperature condition is 950℃, the influence coefficients are as follows: SiO2 is 41.58 dPa·s, B2O3 is 15.17 dPa·s, Na2O is -1.32 dPa·s, Li2O is -122.40 dPa·s, Al2O3 is 27.72 dPa·s, CaO is -9.04 dPa·s, MgO is -6.92 dPa·s, BaO is 2.08 dPa·s, ZnO is 6.39 dPa·s, Sb2O5 is 11.93 dPa·s, TiO2 is 3.07 dPa·s, the influence coefficient of the simulated high-level radioactive waste liquid is -3.55 dPa·s, and L is -1410.84 dPa·s.

[0027] In this invention, when the high-temperature condition is 1150℃, the influence coefficients are as follows: SiO2 is 4.20 dPa·s, B2O3 is 1.53 dPa·s, Na2O is 0.17 dPa·s, Li2O is -9.07 dPa·s, Al2O3 is 3.42 dPa·s, CaO is -1.19 dPa·s, MgO is -0.38 dPa·s, BaO is 0.64 dPa·s, ZnO is 0.72 dPa·s, Sb2O5 is 2.52 dPa·s, TiO2 is 0.04 dPa·s, the influence coefficient of the simulated high-level radioactive waste liquid is -0.75 dPa·s, and L is -144.52 dPa·s.

[0028] In this invention, the raw materials for preparing the borosilicate glass include oxides and / or carbonates.

[0029] In this invention, the oxide preferably includes SiO2 and B2O3. The carbonate preferably includes Na2CO3.

[0030] In this invention, the oxide preferably further includes one or more of Al₂O₃, MgO, ZnO, Sb₂O₅, and TiO₂. The carbonate preferably further includes one or more of Li₂CO₃, CaCO₃, and BaCO₃.

[0031] In this invention, η = L + The method for obtaining formula (1) includes: during the composition study of glass melt or borosilicate glass solidified body, measuring the viscosity of multiple groups of glass melt or borosilicate glass solidified body samples under the condition of 950~1150℃, and fitting the obtained data according to the least squares method to obtain formula (1).

[0032] In this invention, the method for preparing the borosilicate glass cured body includes the following steps: Borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid are mixed to obtain a mixture. During the mixing process, the high-temperature viscosity of the borosilicate glass solidified body formed by the borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid is predicted by the prediction method described in the above technical solution. The mixing ratio of the borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid is adjusted according to the prediction results. The mixture is heated and melted to obtain a glass melt, wherein the heating and melting temperature is ≥950℃; The glass melt is solidified to obtain a borosilicate glass solidified body.

[0033] In this invention, the preferred temperature for the heating and melting process is 1150~1200℃.

[0034] In this invention, the raw materials for preparing the borosilicate glass preferably include oxides and / or carbonates.

[0035] In this invention, the oxide preferably includes SiO2 and B2O3. The oxide preferably also includes one or more of Al2O3, MgO, ZnO, Sb2O5, and TiO2.

[0036] In this invention, the carbonate includes Na₂CO₃. Preferably, the carbonate also includes one or more of Li₂CO₃, CaCO₃, and BaCO₃.

[0037] In this invention, the holding time for heating and melting is preferably 2 to 4 hours, and in the embodiment it can be 3 hours.

[0038] In this invention, the curing preferably includes annealing, and the annealing is preferably: holding at 550°C for 2 hours and then holding at 450°C for 2 hours.

[0039] To further illustrate the present invention, the technical solutions provided by the present invention will be described in detail below with reference to the embodiments, but they should not be construed as limiting the scope of protection of the present invention.

[0040] In this embodiment, η=L+ The specific methods for obtaining formula (1) include: In the formulation study, the viscosity measurement data of the borosilicate glass cured body was selected as the training set, and formula (1) was obtained by least squares fitting. The data shown in Table 1 are only representative data. The prediction relative error of all data points is less than 10%. To further verify the model, the remaining data were used for testing in the examples, and the error was also controlled within 10%.

[0041] Table 1 Raw Data

[0042] Example 1 This embodiment provides a method for predicting the high-temperature viscosity of borosilicate glass solidified body obtained by glass curing of high-level radioactive waste liquid. In this embodiment, the borosilicate glass solidified body is formed from borosilicate glass preparation raw materials and simulated high-level radioactive waste liquid. The glass melt composition based on oxides and simulated high-level radioactive waste liquid in this embodiment is shown in Example 1 in Table 3.

[0043] In this embodiment, the viscosity of the borosilicate glass curing body under high temperature conditions is predicted according to formula (1), where the high temperature conditions are 950℃ or 1150℃.

[0044] In this embodiment, the influence coefficients of each component in the borosilicate glass cured body on the high-temperature viscosity of the borosilicate glass cured body at 950℃ or 1150℃ are shown in Table 2, and the data of the constant term L in formula (1) are shown in Table 2.

[0045] Table 2 Viscosity Influence Coefficients of Borosilicate Glass Cured Borosilicate Glass (unit: dPa·s)

[0046] In this embodiment, the viscosity data of the borosilicate glass cured body at 950℃ and 1150℃ were predicted according to formula (1), as shown in the "Fitting Coefficient Calculation Results" in Table 4.

[0047] This embodiment provides a method for preparing a borosilicate glass cured body, including the following steps: The raw materials for preparing borosilicate glass and the simulated high-level radioactive waste liquid were prepared according to the composition in Table 2. In this embodiment, the raw materials (SiO2, B2O3, Na2CO3, Al2O3, MgO, ZnO, Sb2O5, TiO2, Li2CO3, CaCO3, BaCO3) were prepared and mixed with the simulated high-level radioactive waste liquid until homogeneous. The mixture was then melted at 1150-1200℃ for 3 hours to obtain a glass melt, which was then annealed in an annealing furnace (held at 550℃ for 2 hours, then at 450℃ for 2 hours). After cooling to room temperature, the solidified borosilicate glass was obtained.

[0048] The borosilicate glass cured body obtained in this embodiment was subjected to high-temperature viscosity testing (test temperature was 950℃ or 1150℃), and the test data are shown in "Measured Viscosity Values" in Table 4.

[0049] Table 3 Composition of borosilicate glass cured body

[0050] Examples 2-6 It is basically the same as Example 1, except that the composition of the borosilicate glass cured body in Table 3 is used.

[0051] Comparative Examples 1-4 The results were essentially the same as in Example 1, except that the composition of the borosilicate glass cured body shown in Table 3 was used. Specifically, in Comparative Example 1, the mass content of calcium oxide was 10.25% (too high); in Comparative Example 2, the mass content of sodium oxide was 4.5% (too low); in Comparative Example 3, the mass content of sodium oxide was 4.85% (too low) and the mass content of calcium oxide was 10.24% (too high); and in Comparative Example 4, the mass content of sodium oxide was 4.30% (too low).

[0052] Table 4 Comparison of measured and predicted viscosity results

[0053] As can be seen from the data in Table 4, the composition of the borosilicate glass cured body used in Examples 1-6 is within the required range, and the predicted viscosity can be guaranteed to have a small error of less than 10%. Therefore, only when the composition of the borosilicate glass cured body is within a suitable range can the high-temperature viscosity of the borosilicate glass cured body be accurately predicted using formula (1).

[0054] As can be seen from the above embodiments, the prediction method provided by the present invention can accurately predict the viscosity of borosilicate glass curing body under high temperature conditions, and can predict the viscosity of borosilicate glass curing high-level radioactive waste liquid glass, thereby accelerating the adjustment and optimization of glass curing formula.

[0055] Although the above embodiments have provided a detailed description of the present invention, they are only some embodiments of the present invention, and not all embodiments. Other embodiments can be obtained based on these embodiments without creative effort, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A method for predicting the viscosity of the glass melt generated during the glass solidification process of high-level radioactive waste liquid, characterized in that, The glass melt is formed from borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid. The glass melt comprises the following components by mass fraction, based on oxides and high-level radioactive waste liquid or simulated high-level radioactive waste liquid: SiO2 35~60%, B2O3 5~20%, Na2O 5~20%, Li2O 0~5%, Al2O3 0~10%, CaO 0~10%, MgO 0~5%, BaO 0~5%, ZnO 0~5%, Sb2O5 0~5%, TiO2 0~5%, and high-level radioactive waste liquid or simulated high-level radioactive waste liquid 12~22%. The viscosity of the glass melt under high temperature conditions is predicted according to formula (1), wherein the temperature of the high temperature conditions is ≥950℃; η=L+ Formula (1); In formula (1): η is the viscosity of the glass melt under high temperature conditions, with units of dPa·s. Let be the influence coefficient of the i-th component in the glass melt on the viscosity of the glass melt under high temperature conditions, with units of dPa·s. denoted as , where is the mass fraction of the i-th component in the glass melt, expressed as %; and L is a constant term, expressed as dPa·s.

2. A method for predicting the high-temperature viscosity of a borosilicate glass solidified body obtained by glass curing high-level radioactive waste liquid, characterized in that, The borosilicate glass cured body is formed from borosilicate glass preparation raw materials and high-level radioactive waste liquid or simulated high-level radioactive waste liquid. The borosilicate glass cured body comprises the following components by mass fraction, based on oxides and high-level radioactive waste liquid or simulated high-level radioactive waste liquid: SiO2 35~60%, B2O3 5~20%, Na2O 5~20%, Li2O 0~5%, Al2O3 0~10%, CaO 0~10%, MgO 0~5%, BaO 0~5%, ZnO 0~5%, Sb2O5 0~5%, TiO2 0~5%, and high-level radioactive waste liquid or simulated high-level radioactive waste liquid 12~22%. The viscosity of the borosilicate glass cured body under high temperature conditions is predicted according to formula (1), wherein the temperature of the high temperature conditions is ≥950℃; η=L+ Formula (1); In formula (1): η is the viscosity of the borosilicate glass cured body under high temperature conditions, in dPa·s. Let be the influence coefficient of the i-th component in the borosilicate glass cured body on the viscosity of the borosilicate glass cured body under high temperature conditions, with units of dPa·s. denoted as , where is the mass fraction of the i-th component in the glass melt, expressed as %; and L is a constant term, expressed as dPa·s.

3. The prediction method according to claim 1 or 2, characterized in that, The high-temperature condition is 950℃ or 1150℃.

4. The prediction method according to claim 3, characterized in that, When the high-temperature condition is 950℃, the influence coefficients are as follows: SiO2 is 41.58 dPa·s, B2O3 is 15.17 dPa·s, Na2O is -1.32 dPa·s, Li2O is -122.40 dPa·s, Al2O3 is 27.72 dPa·s, CaO is -9.04 dPa·s, MgO is -6.92 dPa·s, BaO is 2.08 dPa·s, ZnO is 6.39 dPa·s, Sb2O5 is 11.93 dPa·s, TiO2 is 3.07 dPa·s, the influence coefficient of simulated high-level radioactive waste liquid is -3.55 dPa·s, and L is -1410.84 dPa·s.

5. The prediction method according to claim 3, characterized in that, When the high-temperature condition is 1150℃, the influence coefficients are as follows: SiO2 is 4.20 dPa·s, B2O3 is 1.53 dPa·s, Na2O is 0.17 dPa·s, Li2O is -9.07 dPa·s, Al2O3 is 3.42 dPa·s, CaO is -1.19 dPa·s, MgO is -0.38 dPa·s, BaO is 0.64 dPa·s, ZnO is 0.72 dPa·s, Sb2O5 is 2.52 dPa·s, TiO2 is 0.04 dPa·s, the influence coefficient of simulated high-level radioactive waste liquid is -0.75 dPa·s, and L is -144.52 dPa·s.

6. The prediction method according to claim 1 or 2, characterized in that, The raw materials for preparing the borosilicate glass include oxides and / or carbonates.

7. The prediction method according to claim 6, characterized in that, The oxides include SiO2 and B2O3; the carbonates include Na2CO3.

8. The prediction method according to claim 7, characterized in that, The oxides also include one or more of Al2O3, MgO, ZnO, Sb2O5 and TiO2; the carbonates also include one or more of Li2CO3, CaCO3 and BaCO3.

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