Glass mixture and preparation method thereof, and glass product

Abstract

The present application relates to a glass mixture and a preparation method thereof, and a glass product. The method comprises the following steps: providing raw materials to obtain a batch material; the raw materials include, by mass percentage, SiO2: 56% to 62%, Al2O3: 11% to 15%, Na2O: 10% to 14%, K2O: 3% to 8%, MgO: 2% to 7%, SnO2: 0 to 1%, and CeO2: 0 to 1%; mixing and granulating the batch material to obtain a mixed granular material; molding the mixed granular material to obtain a molded granular material; pre-decomposing the molded granular material, the pre-decomposing treatment includes sequentially performing a preheating treatment, a pre-decomposing treatment, and a cooling treatment to prepare a glass mixture; wherein the temperature of the preheating treatment is 100°C to 500°C, and the temperature of the pre-decomposing treatment is 600°C to 1000°C.

Description

Technical Field

[0001] The present application relates to the technical field of glass production and manufacturing, and in particular to a glass mixture and a preparation method thereof, and a glass product. Background Art

[0002] The traditional energy-saving methods of the glass industry focus on glass furnace insulation, improving fuel combustion efficiency, and waste heat utilization. Compared with traditional energy-saving methods, glass mixture granulation is a more effective means to improve glass melting rate and save energy. The key technology and industrialization of mixture granulation is a revolution in glass industry production, which can effectively reduce production costs, improve the environment, and save energy. It is in line with the development ideas of modern industry and makes glass industrial production more large-scale and professional.

[0003] However, in the traditional glass mixture granulation process, the prepared glass batch is in a dense block. When the double rollers extrude the glass batch at high speed, a large amount of heat and friction will be generated, resulting in large wear on the roller surface during extrusion. In addition, the melting temperature of the prepared glass batch is relatively high, and the melting time needs to be extended to ensure a high glass melting rate, which increases the preparation cost.

[0004] Therefore, the traditional technology still needs to be improved. Summary of the invention

[0005] Based on this, the present application provides a glass mixture and a preparation method thereof, and a glass product. The preparation method of the glass mixture can effectively improve the thermodynamic properties of the glass, reduce the melting temperature, shorten the melting time, and increase the glass melting rate.

[0006] The technical solution of this application to solve the above technical problems is as follows:

[0007] In one aspect of the present application, a method for preparing a glass mixture is provided, comprising the following steps:

[0008] Providing raw materials according to mass percentage to obtain a batch material; the raw materials include: SiO2: 56% to 62%, Al2O3: 11% to 15%, Na2O: 10% to 14%, K2O: 3% to 8%, MgO: 2% to 7%, SnO2: 0 to 1%, CeO2: 0 to 1%;

[0009] The batch materials are mixed and granulated to obtain mixed granules;

[0010] The mixed pellets are subjected to molding treatment to obtain molded pellets;

[0011] The formed granules are subjected to a pre-decomposition treatment, wherein the pre-decomposition treatment includes sequentially performing a preheating treatment, a pre-decomposition treatment and a cooling treatment to prepare a glass mixture;

[0012] Wherein, the temperature of the preheat treatment is 100°C to 500°C, and the temperature of the predecomposition treatment is 600°C to 1000°C.

[0013] In some embodiments, the preheating treatment time is 300s to 420s, and the pre-decomposition treatment time is 300s to 420s.

[0014] In some embodiments, the preheating treatment includes a first preheating treatment, a second preheating treatment, and a third preheating treatment performed sequentially;

[0015] Wherein, the time of the first preheating treatment is 100s to 140s, and the temperature of the first preheating treatment is 100°C to 200°C;

[0016] The time of the second preheating treatment is 100s to 140s, and the temperature of the second preheating treatment is 250°C to 350°C;

[0017] The time of the third preheating treatment is 100s to 140s, and the temperature of the third preheating treatment is 400°C to 500°C.

[0018] In some embodiments, the pre-decomposition treatment includes a first pre-decomposition treatment, a second pre-decomposition treatment, and a third pre-decomposition treatment performed sequentially;

[0019] The first pre-decomposition treatment time is 100s to 140s, and the first pre-decomposition treatment temperature is 600°C to 700°C;

[0020] The second pre-decomposition treatment time is 100s to 140s, and the second pre-decomposition treatment temperature is 750°C to 850°C;

[0021] The time of the third pre-decomposition treatment is 100s to 140s, and the temperature of the third pre-decomposition treatment is 900°C to 1000°C.

[0022] In some embodiments, the steps of the mixing and granulation process are as follows:

[0023] The batch material, the binder and the solvent are mixed to prepare a mixed granular material; based on the total mass of the mixed granular material, the batch material accounts for 86% to 96%, the binder accounts for 1% to 6%, and the solvent accounts for 2% to 12%;

[0024] The mixed granular material is subjected to granulation treatment.

[0025] In some embodiments, the mixing and granulation step satisfies at least one of (a) to (d):

[0026] (a) In the process of preparing the mixed granular material, a flow aid is also added; based on the total mass of the mixed granular material, the flow aid accounts for 0 to 1%;

[0027] (b) the mixing time is 300s to 600s;

[0028] (c) the mixing process is carried out under stirring, and the stirring speed is 10r / min to 30r / min;

[0029] (d) The average particle size of the mixed granules is 150 μm to 830 μm.

[0030] In some embodiments, the binder includes at least one of sodium silicate, calcium hydroxide, magnesium sulfate and magnesium chloride, and the glidant includes at least one of light magnesium oxide, aluminum hydroxide, magnesium stearate, stearic acid, micropowder silica gel and microcrystalline fiber.

[0031] In some embodiments, the method for preparing the glass mix satisfies at least one of the conditions (e) to (f):

[0032] (e) The molding process is performed by pressing, and the pressure of the molding process is 5×10 4 N~5×10 6 N;

[0033] (f) The cooling treatment comprises the following steps: lowering the system temperature from the pre-decomposition treatment temperature to 550°C to 650°C within 100s to 140s, then lowering the temperature to 300°C to 400°C within 100s to 140s, and then lowering the temperature to 100°C to 200°C within 100s to 140s.

[0034] In another aspect of the present application, a glass mixture is provided, wherein the glass mixture is prepared by using the preparation method of the glass mixture described above.

[0035] The present application also provides a glass product, wherein the glass product is prepared using a preparation method including the above-mentioned glass mixture or the above-mentioned glass mixture.

[0036] Compared with the conventional technology, the preparation method of the glass mixture in the present application has the following beneficial effects:

[0037] In the above-mentioned method for preparing the glass mixture, on the one hand, raw materials including specific components with a specific ratio relationship are provided, and the preparation raw materials with a specific ratio relationship are regulated; on the other hand, after granulation and molding, a specific pre-decomposition treatment is performed, and the pre-decomposition treatment includes sequentially performing preheating treatment, pre-decomposition treatment and cooling treatment, wherein the temperature of the preheating treatment and the temperature of the pre-decomposition treatment are regulated. The coordinated effect of the two aspects can effectively improve the thermodynamic properties of the glass mixture, and ultimately achieve the reduction of the melting temperature, shortening the melting time, and improving the glass melting rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 This is a diagram showing the effect of a clarification experiment of the glass mixture sample in Example 1 of the present application;

[0039] Figure 2 This is a diagram showing the effect of a clarification experiment on the glass mixture sample in Comparative Example 3 of the present application. DETAILED DESCRIPTION

[0040] For ease of understanding of the present application, the present application will be described more fully below, and preferred embodiments of the present application are provided. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present application belongs. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0042] Except as shown in the operating examples or otherwise indicated, all numbers used in the specification and claims to indicate the amount of ingredients, physicochemical properties, etc. are understood to be adjusted by the term "about" in all cases. For example, therefore, unless otherwise indicated, the numerical parameters listed in the above specification and the attached claims are approximate values, and those skilled in the art can use the teachings disclosed herein to seek to obtain the desired properties and appropriately change these approximate values. The use of numerical ranges expressed as endpoints includes all numbers within the range and any range within the range, for example, 1 to 5 includes 1, 1.1, 1.3, 1.5, 2, 2.75, 3, 3.80, 4 and 5, etc.

[0043] The term "angle of repose" as used herein refers to the maximum angle measured when a particle is in a static state and the gravity and friction between particles are balanced when the particle slides on the free inclined plane of a powder stack in a gravitational field.

[0044] An embodiment of the present application provides a method for preparing a glass mixture, including the following steps S10 to S40.

[0045] Step S10, providing raw materials for preparation to obtain a batch material; the raw materials for preparation include, by mass percentage: SiO2: 56% to 62%, Al2O3: 11% to 15%, Na2O: 10% to 14%, K2O: 3% to 8%, MgO: 2% to 7%, SnO2: 0 to 1%, and CeO2: 0 to 1%.

[0046] It is understood that when a numerical range is disclosed herein, the above range is considered continuous and includes the minimum and maximum values ​​of the range, as well as every value between such minimum and maximum values. Further, when a range refers to an integer, every integer between the minimum and maximum values ​​of the range is included. In addition, when multiple ranges are provided to describe features or characteristics, the ranges can be combined. In other words, unless otherwise indicated, all ranges disclosed herein should be understood to include any and all subranges included therein.

[0047] It should be noted that the value range of SiO2 is "56% to 62%", which means the minimum and maximum values ​​of the range of 56% to 62%, and every value between the minimum and maximum values. Specific examples include but are not limited to the point values ​​in the embodiment and the following point values: 56, 56.5, 57, 57.5, 58, 58.5, 59, 59.5, 60, 60.5, 61, 61.5 or 62%; or a range consisting of any two of these values, as an example, including: 58% to 61%.

[0048] The value range of Al2O3 is "11% to 15%", which means the minimum and maximum values ​​of the range of 11% to 15%, and every value between the minimum and maximum values. Specific examples include but are not limited to 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5% or 15%; or a range consisting of any two of these values, including, as an example: 12% to 15%.

[0049] The value range of Na2O is "10% to 14%", which means the minimum and maximum values ​​of the range of 10% to 14%, and every value between the minimum and maximum values. Specific examples include but are not limited to 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5% or 14%; or a range consisting of any two of these values, including, as an example, 10% to 13%.

[0050] The value range of K2O is "3% to 8%", which means that the minimum and maximum values ​​of the range of 3% to 8% can be taken, as well as every value between the minimum and maximum values. Specific examples include but are not limited to 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5%, 7%, 7.5% or 8%; or a range consisting of any two of these values, as an example, including: 4% to 8%.

[0051] The value range of MgO is "2% to 7%", which means the minimum and maximum values ​​of the range of 2% to 7%, and every value between the minimum and maximum values. Specific examples include but are not limited to 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, 6%, 6.5% or 7%; or a range consisting of any two of these values, including, as an example, 2% to 6%.

[0052] The value range of SnO2 is "0-1%", which means the minimum and maximum values ​​of the range of 0-1%, and every value between the minimum and maximum values. Specific examples include but are not limited to 0, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1%; or a range consisting of any two of these values, as an example, including: 0.1% to 0.8%.

[0053] The value range of CeO2 is "0-1%", which means the minimum and maximum values ​​of the range of 0-1%, and every value between the minimum and maximum values. Specific examples include but are not limited to 0, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9% or 1%; or a range consisting of any two of these values, including, as an example, 0.1% to 0.8%.

[0054] Step S20: Mix and granulate the above-mentioned ingredients to obtain mixed granules.

[0055] It should be noted that the above-mentioned mixing and granulating process can be carried out by using a mixing and granulating integrated machine commonly used in the art.

[0056] It can be understood that the prepared raw materials are added in a reasonable order, and each raw material rotates in the container under the stirring action of the mixing paddle, and at the same time each raw material moves along the direction of the conical wall, and each raw material is gradually mixed evenly; further, each raw material is gradually transformed into a loose material under the action of extrusion, friction and kneading of the mixture by the paddles and the cylinder wall.

[0057] Optionally, the step of mixing and granulating includes the following steps S21 and S22.

[0058] Step S21, mixing the batch material, the adhesive and the solvent to prepare a mixed granular material; based on the total mass of the mixed granular material, the batch material accounts for 86% to 96%, the adhesive accounts for 1% to 6%, and the solvent accounts for 2% to 12%.

[0059] In some embodiments, the solvent is water.

[0060] Step S22, granulating the mixed granular material.

[0061] It can be understood that the above mixing process is carried out under the combined action of the raw material characteristics, adhesive and solvent, and then the mixture is cut into small and uniform particles in a semi-fluid state by a granulating knife; and the oversized particle mixture is re-cut and mixed through the built-in screening device to form uniform particles.

[0062] In some of the embodiments, a flow aid is added during the preparation of the mixed granular material; based on the total mass of the mixed granular material, the flow aid accounts for 0-1%.

[0063] In some embodiments, the mixing process lasts for 300s to 600s.

[0064] In some embodiments, the mixing process is performed under stirring at a speed of 10 r / min to 30 r / min.

[0065] In some of the embodiments, the angle of repose of the mixed aggregate material during the mixing process is controlled to be below 38°.

[0066] It can be understood that the smaller the angle of repose, the smaller the friction, and the better the fluidity of the mixed granular material.

[0067] In some embodiments, the binder includes at least one of sodium silicate, calcium hydroxide, magnesium sulfate and magnesium chloride.

[0068] In some embodiments, the glidant includes at least one of light magnesium oxide, aluminum hydroxide, magnesium stearate, stearic acid, micropowder silica gel and microcrystalline fiber.

[0069] It is understandable that the purpose of selecting a suitable flow aid based on the above-mentioned raw materials is to ensure that the glass batch has good fluidity to ensure that the next step proceeds smoothly.

[0070] In some embodiments, the average particle size of the mixed granular material is 150 μm to 830 μm.

[0071] In some of the embodiments, the mean square deviation of the uniformity of the mixed pellets is controlled to be less than 0.3.

[0072] Specifically, the EDTA complexometric titration method is used for testing. The main principle is that the mixture is dissolved in water, the carbonate in the mixture is titrated with hydrochloric acid, and the carbonate content is calculated. At least 20 samples are taken, and the standard deviation is calculated as the mean square error.

[0073] Step S30, subjecting the mixed pellets to molding processing to obtain molded pellets.

[0074] It is understandable that the above-mentioned molding process uses a molding machine or tablet press commonly used in the art to convey the mixed material into a sealed die with a specific shape. Under the action of external pressure, the gaps between the mixed particles are gradually reduced and finally agglomerated into a shape.

[0075] In some embodiments, the molding process is a press molding process, and the pressure of the molding process is 5×10 4 N~5×10 6 N.

[0076] There is no specific requirement for the above-mentioned molding shape, which can be a cube, a cuboid or a cylinder.

[0077] In a specific example, the above-mentioned molding shape is a cylinder.

[0078] In some of the embodiments, the molding process includes spraying a mold release agent on the surface of the mold.

[0079] In some specific examples, the release agent includes at least one of magnesium stearate or talc.

[0080] It can be understood that the release agent is added to further protect the mold, reduce the friction between the mixed pellets and the mold and the introduction of impurities, reduce the problem of sticking to the mold when the mixed pellets contact the mold, increase the life of the mold, improve production stability, reduce production costs, and at the same time have an adsorption device to reduce impurity pollution.

[0081] Step S40, pre-decomposition treatment is performed on the above-mentioned shaped granules, and the pre-decomposition treatment includes sequentially performing preheating treatment, pre-decomposition treatment and cooling treatment to prepare a glass mixture.

[0082] It should be noted that the formed pellets are evenly conveyed to the conveyor belt. Above the conveyor belt is the kiln flue gas waste heat pipe. The flue gas waste heat is used to perform non-contact radiation heating on the formed pellets, that is, the temperature is adjusted using the temperature compensation system.

[0083] Optionally, the temperature of the preheat treatment is 100°C to 500°C, and the temperature of the predecomposition treatment is 600°C to 1000°C.

[0084] In some embodiments, the preheating treatment time is 300s to 420s, and the pre-decomposition treatment time is 300s to 420s.

[0085] Optionally, the preheating treatment includes a first preheating treatment, a second preheating treatment and a third preheating treatment performed sequentially.

[0086] In some embodiments, the first preheating treatment lasts for 100 seconds to 140 seconds, and the first preheating treatment is performed at a temperature of 100° C. to 200° C.

[0087] In some embodiments, the second preheating treatment lasts for 100s to 140s, and the second preheating treatment temperature is 250°C to 350°C.

[0088] In some embodiments, the third preheating treatment lasts for 100s to 140s, and the third preheating treatment is performed at a temperature of 400°C to 500°C.

[0089] Optionally, the pre-decomposition treatment includes a first pre-decomposition treatment, a second pre-decomposition treatment and a third pre-decomposition treatment performed sequentially.

[0090] In some embodiments, the first pre-decomposition treatment time is 100s-140s, and the first pre-decomposition treatment temperature is 600°C-700°C.

[0091] In some embodiments, the second pre-decomposition treatment time is 100s-140s, and the second pre-decomposition treatment temperature is 750°C-850°C.

[0092] In some embodiments, the third pre-decomposition treatment time is 100s-140s, and the third pre-decomposition treatment temperature is 900°C-1000°C.

[0093] Optionally, the cooling treatment comprises the following steps: cooling the system temperature from the pre-decomposition treatment temperature to 550°C to 650°C within 100s to 140s, then cooling it to 300°C to 400°C within 100s to 140s, and then cooling it to 100°C to 200°C within 100s to 140s.

[0094] In the above-mentioned glass preparation method, on the one hand, raw materials including specific components with specific ratios are provided, and the raw materials with specific ratios are regulated; on the other hand, after granulation and molding, a specific pre-decomposition treatment is performed, and the pre-decomposition treatment includes sequential preheating treatment, pre-decomposition treatment and cooling treatment, wherein the temperature of the preheating treatment and the temperature of the pre-decomposition treatment are regulated, and the coordinated effect of the two aspects can effectively improve the thermodynamic properties of the glass mixture, and ultimately reduce the melting temperature, shorten the melting time, and increase the glass melting rate. It adopts a fully automatic, closed conveying system, which effectively improves the workshop environment and saves the loss of the mixture.

[0095] An embodiment of the present application further provides a glass mixture, and the glass mixture is prepared by using a preparation method including the glass mixture.

[0096] The glass mixture has good mechanical properties such as hardness and crushing resistance, and has a low impurity metal content; it is not only used in soda-lime glass, but also can be used in electronic glass, optical glass, etc.

[0097] An embodiment of the present application further provides a glass product, which is prepared by a preparation method including the glass mixture.

[0098] When the glass mixture and the preparation method thereof are used to prepare glass products, the melting temperature can be lowered, the melting time can be shortened, and the glass melting rate can be increased.

[0099] In some embodiments, the glass product may be silicate glass, phosphate glass, borate glass, aluminate glass, etc.

[0100] In some embodiments, the glass products can be architectural glass, chemical glass, optical glass, electronic glass, etc.

[0101] In order to make the purpose, technical solutions and advantages of the present invention more concise and clear, the present invention is described with the following specific embodiments, but the present invention is by no means limited to these embodiments. The embodiments described below are only preferred embodiments of the present invention, which can be used to describe the present invention and cannot be understood as limiting the scope of the present invention. It should be pointed out that any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0102] The present application is further described below in conjunction with specific embodiments, but they should not be construed as limiting the scope of protection of the present application.

[0103] Example 1

[0104] (1) According to the glass component formula shown in Table 1, the required raw materials are accurately weighed to obtain a batch material.

[0105] (2) The weighed batch material, sodium silicate (liquid water glass, molecular formula: Na2O.nSiO2, CAS: 1344-09-8), magnesium oxide and water are mixed according to the parameters shown in Table 1 to prepare a mixed granular material; and the mixed granular material is granulated to obtain a mixed granular material.

[0106] (3) Spraying magnesium stearate on the surface of the die, and pressing the mixed granules to obtain molded granules.

[0107] (4) The molded pellets are subjected to a pre-decomposition treatment, the pre-decomposition treatment comprising, in sequence, a first pre-heating treatment at 100°C for 100s, a second pre-heating treatment at 250°C for 100s, and a third pre-heating treatment at 400°C for 100s; a first pre-decomposition treatment at 600°C for 100s, a second pre-decomposition treatment at 750°C for 100s, and a third pre-decomposition treatment at 900°C for 100s; within 100s, the system temperature is reduced from 900°C during the pre-decomposition treatment to 550°C, then reduced to 300°C within 100s, and then reduced to 100°C within 100s to prepare a glass mixture.

[0108] (5) The glass mixture is subjected to melting treatment, forming treatment, and annealing treatment to prepare a glass product.

[0109] (6) The physical and chemical properties of the prepared glass samples were tested; the following are the specific performance tests.

[0110] 1. The compacted density of the glass mixtures prepared in the examples and comparative examples was tested. Specifically, an electronic balance was used for weighing, and a caliper was used to measure the diameter and thickness, and the volume was calculated. The compacted density was obtained by dividing the weight by the volume.

[0111] 2. The iron impurity content of the glass mixtures prepared in the embodiment and the comparative example was tested by using a fluorescence spectrometer. A standard curve was established according to the test range, and the standard sample of the standard curve was obtained by the molten sample chemical titration method.

[0112] 3. The hardness of the glass samples prepared in the embodiments and comparative examples was tested, specifically using a YD-35 tablet hardness tester. The samples were squeezed and the maximum breaking force was recorded as the hardness.

[0113] 4. The crushing resistance of the glass samples prepared in the embodiments and comparative examples was tested, specifically using a pressure tester. The samples were placed on a carrier, and a punch fixture was used to punch the samples. The force when they were broken was recorded as the crushing resistance.

[0114] 5. The ignition loss of the glass samples prepared in the examples and comparative examples was calculated. Specifically, a balance was used to weigh the weight of the samples before and after pre-firing. The weight after pre-firing divided by the weight before pre-firing was the ignition loss.

[0115] 6. The glass mixtures prepared in the examples and comparative examples were tested for clarification effect. Specifically, a high-temperature furnace was used to place the samples at 600°C to 1000°C, and the temperature was increased to 1550°C to 1650°C at a heating rate of 10°C / min. Photos were taken according to the temperature and time to record the melting state at high temperature and calculate the number of bubbles, etc.

[0116] Embodiments 2 to 7

[0117] Examples 2 to 7 are basically the same as Example 1, and the only difference is the raw material formula of glass and the process parameter conditions.

[0118] Other conditions and parameters are the same as those in Example 1. Please see Table 1 for specific test results.

[0119] Comparative Examples 1 to 3

[0120] The preparation methods of the glass mixtures of Comparative Examples 1 to 3 are basically the same as those of Example 1, and the only difference is that the raw material formulas and process parameter conditions of the glass in Comparative Examples 1 to 3 are shown in Table 1.

[0121] Other conditions and parameters are the same as those in Example 1. Please see Table 1 for specific test results.

[0122] Table 1

[0123]

[0124]

[0125] Figure 1 This is a diagram showing the clarification experiment effect of the glass mixture sample prepared in Example 1 of the present application. Figure 2 This is a clarification experiment effect diagram of the glass mixture sample prepared in Comparative Example 3 of the present application. By comparison, it can be seen that the glass mixture prepared by the present application scheme has a clear interface and the best clarification effect, with only a small amount of bubbles discharged, and the effect is better than the glass mixture prepared in Comparative Example 3.

[0126] From the test results of the glass mixtures and glass samples prepared in Examples 1 to 7 and Comparative Examples 1 to 3 in the above figures and Table 1, it can be seen that the glass mixture prepared by the method for preparing the glass mixture of the present application provides raw materials including specific components with a specific ratio relationship on the one hand, by controlling the raw materials for preparing the glass, and on the other hand, after granulation and molding, it undergoes a pre-decomposition treatment, and the pre-decomposition treatment includes sequentially performing a preheating treatment, a pre-decomposition treatment and a cooling treatment, wherein the temperature of the preheating treatment is 100°C to 500°C, and the temperature of the pre-decomposition treatment is 600°C to 1000°C, thereby ultimately achieving a lower melting temperature, shortening the melting time, and increasing the glass melting rate.

[0127] Furthermore, the raw materials are mixed and granulated according to their characteristics, adhesive and water, and then the mixture is cut into small and uniform particles by a granulating knife in a semi-fluid state.

[0128] In summary, the average particle size of the mixed granules of the glass mixture prepared by the preparation method of the glass mixture of the present application is 150μm-830μm, the hardness reaches 30kg-60kg, the crushing resistance reaches 15kgf-45kgf, and the compaction density is 1.8g / cm 3~2.3g / cm 3 , the amount of iron impurities introduced is controlled below 16ppm.

[0129] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0130] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be based on the attached claims.

Claims

1. A method for preparing a glass mixture, characterized in that: The following steps are involved: Providing raw materials to obtain a batch material; the raw materials include, by mass percentage, SiO2: 56% to 62%, Al2O3: 12.5% ​​to 15%, Na2O: 10% to 14%, K2O: 3% to 8%, MgO: 2% to 7%, SnO2: 0% to 1%, and CeO2: 0% to 1%; The batch materials are mixed and granulated to obtain mixed granules; The mixed pellets are subjected to molding treatment to obtain molded pellets; Pre-decomposing the formed granules, wherein the pre-decomposition includes sequentially performing preheating treatment, pre-decomposition treatment and cooling treatment to prepare a glass mixture; Wherein, the temperature of the preheating treatment is 100°C to 500°C, and the temperature of the pre-decomposition treatment is 600°C to 1000°C; The pre-decomposition treatment includes a first pre-decomposition treatment, a second pre-decomposition treatment and a third pre-decomposition treatment performed sequentially; The first pre-decomposition treatment time is 100 s to 140 s, and the first pre-decomposition treatment temperature is 600° C. to 700° C.; The second pre-decomposition treatment time is 100 s to 140 s, and the second pre-decomposition treatment temperature is 750° C. to 850° C.; The third pre-decomposition treatment time is 100 s to 140 s, and the third pre-decomposition treatment temperature is 900° C. to 1000° C.; The steps of the mixed granulation process are as follows: The batch material, the binder and the solvent are mixed to prepare a mixed granular material; based on the total mass of the mixed granular material, the batch material accounts for 86% to 96%, the binder accounts for 1% to 6%, and the solvent accounts for 2% to 12%; The mixed granular material is subjected to granulation treatment.

2. The method for preparing a glass mixture according to claim 1, wherein: The time of the preheating treatment is 300s~420s, and the time of the pre-decomposition treatment is 300s~420s.

3. The method for preparing a glass mix according to any one of claims 1 to 2, characterized in that: The preheating treatment includes a first preheating treatment, a second preheating treatment and a third preheating treatment performed sequentially; The first preheating treatment lasts for 100 s to 140 s and is performed at a temperature of 100° C. to 200° C. The second preheating treatment time is 100 s to 140 s, and the second preheating treatment temperature is 250° C. to 350° C.; The time of the third preheating treatment is 100 s to 140 s, and the temperature of the third preheating treatment is 400° C. to 500° C.

4. The method for preparing a glass mix according to any one of claims 1 to 2, wherein the mixing and granulation step satisfies at least one of the conditions (a) to (d): (a) During the preparation of the mixed granular material, a flow aid is also added; based on the total mass of the mixed granular material, the flow aid accounts for 0.2% to 1%; (b) the mixing time is 300 s to 600 s; (c) the mixing process is carried out under stirring, and the stirring speed is 10 r / min to 30 r / min; (d) The average particle size of the mixed granules is 150 μm to 830 μm.

5. The method for preparing a glass mix according to claim 4, wherein: The adhesive includes at least one of sodium silicate, calcium hydroxide, magnesium sulfate and magnesium chloride, and the flow aid includes at least one of light magnesium oxide, aluminum hydroxide, magnesium stearate, stearic acid, micropowder silica gel and microcrystalline fiber.

6. The method for preparing a glass mix according to any one of claims 1 to 2, characterized in that: The method for preparing the glass mixture satisfies at least one of the conditions (e) to (f): (e) The molding process is performed by pressing, and the pressure of the molding process is 5×10 4 N~5×10 6 N; (f) The cooling treatment comprises the following steps: cooling the system temperature from the pre-decomposition treatment temperature to 550°C to 650°C within 100 s to 140 s, then cooling to 300°C to 400°C within 100 s to 140 s, and then cooling to 100°C to 200°C within 100 s to 140 s.

7. A glass mixture, characterized in that: The glass mixture is prepared by the method for preparing the glass mixture according to any one of claims 1 to 6.

8. A glass product, characterized in that: The glass product is made from the glass mixture according to claim 7.

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