Aluminum-silicon oxide modification process based on disc granulator

Abstract

The invention provides an aluminum-silicon oxide modification process based on a disc granulator, and relates to the technical field of aluminum-silicon oxides.The aluminum-silicon oxide modification process comprises the steps that sufficient aluminum-silicon oxide powder and a binder are prepared, and the aluminum-silicon oxide powder is screened; mixing the aluminum-silicon oxide powder and a binder according to a specified proportion to obtain a first mixture; feeding the first mixture into a disc granulator, and granulating to obtain wet granules; the wet particles are screened, and unqualified wet particles are subjected to granulation again; drying the wet particles to obtain dry particles, and sintering the dry particles to obtain finished particles; and screening the finished product particles. The disc granulator is used for granulating the aluminum-silicon oxide powder, and the size distribution and the roundness of particles are effectively controlled through screening actions at different stages and timely adjustment of operation parameters of the disc granulator, so that the uniformity and the quality of the particles are improved, and the aluminum-silicon oxide powder is convenient to convey and discharge.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum silicon oxides, and particularly to a modification process of aluminum silicon oxides based on a disk granulator. Background Art

[0002] Aluminum silicon oxide materials are widely used in the fields of refractory materials, ceramics, catalysts, etc. In order to improve their performance, especially their high temperature resistance, strength, thermal conductivity, etc., modification treatment is usually carried out. Traditional modification processes of aluminum silicon oxides mostly rely on simple powder mixing and sintering methods, and the produced aluminum silicon oxides have small particle size, large angle of repose, and poor fluidity, which affect the transportation and feeding of aluminum silicon oxides. Summary of the Invention

[0003] The present invention provides a modification process of aluminum silicon oxides based on a disk granulator to solve the defects in the prior art that the produced aluminum silicon oxides have small particle size, large angle of repose, and poor fluidity, which affect the transportation and feeding of aluminum silicon oxides.

[0004] On the one hand, the present invention provides a modification process of aluminum silicon oxides based on a disk granulator, including:

[0005] Step S1: Prepare a sufficient amount of aluminum silicon oxide powder and a binder, and screen the aluminum silicon oxide powder;

[0006] Step S2: Mix the aluminum silicon oxide powder and the binder in a specified ratio to obtain a first mixture;

[0007] Step S3: Feed the first mixture into a disk granulator for granulation to obtain wet granules;

[0008] Step S4: Screen the wet granules, and re-granulate the unqualified wet granules;

[0009] Step S5: Dry the wet granules to obtain dry granules, and sinter the dry granules to obtain finished granules;

[0010] Step S6: Screen the finished granules.

[0011] Preferably, the binder includes: sodium silicate, polyvinyl alcohol, starch.

[0012] Preferably, Step S4 includes:

[0013] Step S41: Screen the size of the wet granules to obtain wet granules with too large size, wet granules with qualified size, and wet granules with too small size;

[0014] Step S42: Crush the wet granules with too large size to obtain crushed granules;

[0015] Step S43: Put the crushed particles and the wet particles with too small size into a disk granulator for re-granulation.

[0016] Preferably, step S4 further includes:

[0017] Step S44: Randomly select several qualified wet particles from the qualified wet particles as test particles, and conduct roundness tests on the test particles;

[0018] Step S45: Obtain the first roundness evaluation result based on the roundness test results of the test particles;

[0019] Step S46: If the first roundness evaluation result is qualified, perform step S5 on the qualified wet particles; otherwise, re-granulate all the qualified wet particles.

[0020] Preferably, step S45 includes:

[0021] Step S451: Calculate the value of the first roundness evaluation parameter;

[0022] where Q is the value of the first roundness evaluation parameter; n is the number of test particles with qualified roundness test results; N is the total number of test particles;

[0023] Step S452: If the value of the first roundness evaluation parameter is greater than the preset first threshold, the first roundness evaluation result is qualified; otherwise, the first roundness evaluation result is unqualified.

[0024] Preferably, step S6 includes:

[0025] Step S61: Conduct size screening and roundness screening on the finished particles to obtain qualified finished particles;

[0026] Step S62: Based on the proportion of the qualified finished particles, feedback and adjust the working parameters of the disk granulator. The working parameters of the disk granulator include the rotation speed and vibration frequency of the disk granulator.

[0027] Preferably, step S62 includes:

[0028] Step S621: Calculate the proportion of the qualified finished particles. When the proportion of the qualified finished particles is greater than the preset second threshold, do not adjust the working parameters of the disk granulator; otherwise, adjust the working parameters of the disk granulator;

[0029] Step S622: Determine the types of working parameters of the disk granulator to be adjusted according to the size distribution and roundness detection of the finished particles;

[0030] Step S623: Adjust the working parameters of the corresponding type of disk granulator to the corresponding adjustment target values.

[0031] Preferably, step S622 includes:

[0032] Step S6221: Calculate the rotational speed influence evaluation parameter;

[0033] wherein, I1 is the rotational speed influence evaluation parameter; k1 is the first size difference weighting coefficient; k2 is the first roundness difference weighting coefficient; D max is the maximum diameter of the finished product particles; D min is the minimum diameter of the finished product particles; is the average diameter of the finished product particles; P b is the minimum required proportion of the finished product particles with qualified roundness; P s is the actual proportion of the finished product particles with qualified roundness;

[0034] Step S6222: Calculate the vibration frequency influence evaluation parameter;

[0035] wherein, I2 is the vibration frequency influence evaluation parameter; k3 is the second roundness difference weighting coefficient; k4 is the second size difference weighting coefficient; D max is the maximum diameter of the finished product particles; D min is the minimum diameter of the finished product particles; is the average diameter of the finished product particles; C is the average roundness of the finished product particles;

[0036] Step S6223: If the rotational speed influence evaluation parameter is greater than the vibration frequency influence evaluation parameter, adjust the rotational speed of the disk granulator, otherwise adjust the vibration frequency of the disk granulator.

[0037] Preferably, step S623 includes:

[0038] Step S6231: Calculate the rotational speed adjustment target value of the disk granulator;

[0039] wherein, n m is the rotational speed adjustment target value of the disk granulator; ω is the actual humidity of the first mixture; ω0 is the unit humidity; θ is the inclination angle of the disk; is the average diameter of the finished product particles; D B is the target diameter of the finished product particles; g is the acceleration due to gravity; μ is the dynamic friction coefficient between the first mixture and the disk surface; δ is the bulk density of the first mixture; D p is the disk diameter; π is the pi;

[0040] Step S6232: Calculate the vibration frequency adjustment target value of the disk granulator;

[0041] Among them, f is the target value of the vibration frequency adjustment of the disk granulator; π is the pi; ω is the actual humidity of the first mixture; G is the elastic coefficient of the elastic element; m is the effective vibration mass carried on the disk.

[0042] Step S6233: Adjust the actual working parameters of the disk granulator to the corresponding target values.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] By using a disk granulator to granulate aluminum silicon oxide powder, through sieving actions in different stages and timely adjustment of the operating parameters of the disk granulator, the present invention effectively controls the particle size distribution and roundness, thereby improving the particle uniformity and quality. Description of the Drawings

[0045] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0046] Figure 1 is the flow schematic diagram of the present invention. Detailed Embodiments

[0047] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0048] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0049] Example 1

[0050] An embodiment of the present invention provides an aluminum-silicon oxide modification process based on a disk granulator, including:

[0051] Step S1: Prepare a sufficient amount of aluminum-silicon oxide powder and binder, and screen the aluminum-silicon oxide powder;

[0052] Step S2: Mix the aluminum-silicon oxide powder and the binder in a specified ratio to obtain a first mixture;

[0053] Step S3: Feed the first mixture into a disk granulator for granulation to obtain wet granules;

[0054] Step S4: Screen the wet granules, and re-granulate the unqualified wet granules;

[0055] Step S5: Dry the wet granules to obtain dry granules, and sinter the dry granules to obtain finished granules;

[0056] Step S6: Screen the finished granules.

[0057] Preferably, the binder includes: sodium silicate, polyvinyl alcohol, starch.

[0058] Preferably, step S4 includes:

[0059] Step S41: Screen the size of the wet granules to obtain over-sized wet granules, qualified-size wet granules, and under-sized wet granules;

[0060] Step S42: Crush the over-sized wet granules to obtain crushed granules;

[0061] Step S43: Feed the crushed granules and the under-sized wet granules into the disk granulator for re-granulation.

[0062] Preferably, step S4 further includes:

[0063] Step S44: Randomly select several qualified-size wet granules from the qualified-size wet granules as test granules, and perform a roundness test on the test granules;

[0064] Step S45: Based on the roundness test results of the test granules, obtain a first roundness evaluation result;

[0065] Step S46: If the first roundness evaluation result is qualified, perform step S5 on the qualified-size wet granules; otherwise, re-granulate all the qualified-size wet granules.

[0066] Preferably, step S45 includes:

[0067] Step S451: Calculate the value of the first roundness evaluation parameter;

[0068] Among them, Q is the value of the first roundness evaluation parameter; n is the number of test particles with qualified roundness test results; N is the total number of test particles;

[0069] Step S452: If the value of the first roundness evaluation parameter is greater than the preset first threshold, the first roundness evaluation result is qualified; otherwise, the first roundness evaluation result is unqualified.

[0070] Preferably, step S6 includes:

[0071] Step S61: Perform size screening and roundness screening on the finished product particles to obtain qualified finished product particles;

[0072] Step S62: Based on the proportion of the qualified finished product particles, feedback and adjust the working parameters of the disk granulator. The working parameters of the disk granulator include the rotation speed of the disk granulator and the vibration frequency of the disk granulator.

[0073] The beneficial effects of the above technical solutions are as follows:

[0074] By using a disk granulator to granulate the aluminum silicon oxide powder, through the screening actions in different stages and the timely adjustment of the operating parameters of the disk granulator, the size distribution and roundness of the particles are effectively controlled, thereby improving the uniformity and quality of the particles.

[0075] Through the detailed screening steps, the wet particles with unqualified sizes are re-granulated, thus avoiding the waste of materials caused by unqualified particles entering subsequent drying, sintering and other links, and improving the material utilization rate.

[0076] Through the multi-stage screening, testing and re-granulation design, unqualified particles can be effectively removed during the production process, reducing the generation of unqualified products, improving the production efficiency and the material utilization rate. In addition, the re-granulation operation can also improve the resource utilization rate and reduce the generation of waste.

[0077] Embodiment 2

[0078] Based on Embodiment 1, step S62 includes:

[0079] Step S621: Calculate the proportion of the qualified finished product particles. When the proportion of the qualified finished product particles is greater than the preset second threshold, do not adjust the working parameters of the regulating disk granulator; otherwise, adjust the working parameters of the disk granulator;

[0080] Step S622: Determine the types of working parameters of the disk granulator to be adjusted according to the size distribution and roundness detection of the finished product particles;

[0081] Step S623: Adjust the operating parameters of the corresponding type of disk granulator to the corresponding adjustment target values.

[0082] Preferably, step S622 includes:

[0083] Step S6221: Calculate the rotational speed influence evaluation parameter;

[0084] Among them, I1 is the rotational speed influence evaluation parameter; k1 is the first size difference weighting coefficient (with a value greater than 0 and less than 1); k2 is the first roundness difference weighting coefficient (with a value greater than 0 and less than 1); D max is the maximum diameter of the finished product particles; D min is the minimum diameter of the finished product particles; is the average diameter of the finished product particles; P b is the minimum required proportion of the finished product particles with qualified roundness; P s is the actual proportion of the finished product particles with qualified roundness;

[0085] Step S6222: Calculate the vibration frequency influence evaluation parameter;

[0086] Among them, I2 is the vibration frequency influence evaluation parameter; k3 is the second roundness difference weighting coefficient (with a value greater than 0 and less than 1); k4 is the second size difference weighting coefficient (with a value greater than 0 and less than 1); D max is the maximum diameter of the finished product particles; D min is the minimum diameter of the finished product particles; is the average diameter of the finished product particles; C is the average roundness of the finished product particles;

[0087] Step S6223: If the rotational speed influence evaluation parameter is greater than the vibration frequency influence evaluation parameter, adjust the rotational speed of the disk granulator, otherwise adjust the vibration frequency of the disk granulator.

[0088] Preferably, step S623 includes:

[0089] Step S6231: Calculate the rotational speed adjustment target value of the disk granulator;

[0090] Among them, n m is the rotational speed adjustment target value of the disk granulator; ω is the actual humidity of the first mixture; ω0 is the unit humidity; θ is the inclination angle of the disk; is the average diameter of the finished product particles; D B is the target diameter of the finished product particles; g is the acceleration due to gravity; μ is the dynamic friction coefficient between the first mixture and the disk surface; δ is the bulk density of the first mixture; D p is the disk diameter; π is the pi;

[0091] Step S6232: Calculate the target value for adjusting the vibration frequency of the disk granulator;

[0092] where f is the target value for adjusting the vibration frequency of the disk granulator; π is the ratio of a circle's circumference to its diameter; ω is the actual humidity of the first mixture; G is the elastic coefficient of the elastic element; m is the effective vibration mass carried on the disk;

[0093] Step S6233: Adjust the actual working parameters of the disk granulator to the corresponding target values.

[0094] In this embodiment, the elastic coefficient of the elastic element is the ratio of stress (force per unit area) to strain (deformation per unit length) during the elastic deformation stage of the material, such as the spring constant of a spring.

[0095] The beneficial effects of the above technical solution are as follows:

[0096] By screening the size and roundness of the finished granules and adjusting the working parameters (including rotational speed and vibration frequency) of the disk granulator based on the proportion of qualified-quality granules, the quality of the final product can be controlled more precisely, ensuring that the product meets stable and consistent standards in terms of granule size, roundness, etc., and satisfying the requirements of different applications. Through real-time feedback and dynamic adjustment based on the granule quality qualification rate, the key parameters in the granulation process are automatically optimized, making the production process more intelligent, reducing human operation errors, and improving production efficiency and product consistency. By calculating the impact evaluation parameters of rotational speed and vibration frequency on granule quality and making reasonable selection and adjustment between the two, the direction and amplitude of the adjustment can be ensured to be more accurate. This process can make adaptive adjustments under different production batches and raw material changes by dynamically adjusting the working parameters and feeding back the results. Even when the material properties change, the system can still maintain good granulation effects and ensure product quality.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An aluminum-silicon oxide modification process based on a disk granulator, characterized in that Including: Step S1: Prepare a sufficient amount of aluminum silicon oxide powder and binder, and screen the aluminum silicon oxide powder. Step S2: Mix the aluminum silicon oxide powder and the binder in a specified ratio to obtain a first mixture. Step S3: Feed the first mixture into a disk granulator for granulation to obtain wet granules. Step S4: Screen the wet granules, and re-granulate the unqualified wet granules. Step S5: Dry the wet granules to obtain dried granules, and sinter the dried granules to obtain finished granules. Step S6: Screen the finished granules.

2. The aluminum-silicon oxide modification process based on a disk granulator according to claim 1, wherein The binder includes: water glass, polyvinyl alcohol, and starch.

3. A process for modifying aluminum silicate oxides based on a disk granulator according to claim 1, characterized in that, Step S4 includes: Step S41: Screen the size of the wet granules to obtain over-sized wet granules, qualified-sized wet granules, and under-sized wet granules. Step S42: Crush the over-sized wet granules to obtain crushed granules. Step S43: Feed the crushed granules and the under-sized wet granules into the disk granulator for re-granulation.

4. The aluminum-silicon oxide modification process based on a disk granulator according to claim 1, characterized in that, Step S4 also includes: Step S44: Randomly select several qualified-sized wet granules from the qualified-sized wet granules as test granules, and perform roundness tests on the test granules. Step S45: Based on the roundness test results of the test granules, obtain a first roundness evaluation result. Step S46: If the first roundness evaluation result is qualified, perform Step S5 on the qualified-sized wet granules; otherwise, re-granulate all the qualified-sized wet granules.

5. A process for modifying aluminum silicon oxide based on a disk granulator according to claim 4, characterized in that, Step S45 includes: Step S451: Calculate the value of the first roundness evaluation parameter. Wherein, Q is the value of the first roundness evaluation parameter; n is the number of test particles with qualified roundness test results; N is the total number of test particles; Step S452: If the value of the first roundness evaluation parameter is greater than a preset first threshold, the first roundness evaluation result is qualified; otherwise, the first roundness evaluation result is unqualified.

6. The aluminum-silicon oxide modification process based on a disk granulator according to claim 1, characterized in that, Step S6 includes: Step S61: Perform size screening and roundness screening on the finished granules to obtain qualified-quality finished granules. Step S62: Based on the proportion of the qualified-quality finished granules, feedback and adjust the working parameters of the disk granulator. The working parameters of the disk granulator include the rotation speed and vibration frequency of the disk granulator.

7. A process for modifying aluminum silicate oxides based on a disk granulator according to claim 6, characterized in that, Step S62 includes: Step S621: Calculate the proportion of the qualified-quality finished granules. When the proportion of the qualified-quality finished granules is greater than a preset second threshold, do not adjust the working parameters of the disk granulator; otherwise, adjust the working parameters of the disk granulator. Step S622: Determine the types of working parameters of the disk granulator to be adjusted according to the size distribution and roundness detection of the finished granules. Step S623: Adjust the working parameters of the corresponding type of disk granulator to the corresponding adjustment target values.

8. A process for modifying aluminum silicate oxides based on a disk granulator according to claim 7, characterized in that, Step S622 includes: Step S6221: Calculate the rotation speed influence evaluation parameter. Among them, I1 is the rotational speed influence evaluation parameter; k1 is the first size difference weighting coefficient; k2 is the first roundness difference weighting coefficient; D max is the maximum diameter of the finished product particles; D min is the minimum diameter of the finished product particles; is the average diameter of the finished product particles; P b is the lowest required proportion of the finished product particles with qualified roundness; P s is the actual proportion of the finished product particles with qualified roundness; Step S6222: Calculate the vibration frequency influence evaluation parameter. Wherein, I2 is an evaluation parameter for the influence of vibration frequency; k3 is a second roundness difference weighting coefficient; k4 is a second size difference weighting coefficient; D max is the maximum diameter of the finished product particles; D min is the minimum diameter of the finished product particles; is the average diameter of the finished product particles; C is the average roundness of the finished product particles; Step S6223: If the rotation speed influence evaluation parameter is greater than the vibration frequency influence evaluation parameter, adjust the rotation speed of the disk granulator; otherwise, adjust the vibration frequency of the disk granulator.

9. A process for modifying aluminum silicon oxide based on a disk granulator according to claim 7, characterized in that, Step S623 includes: Step S6231: Calculate the rotation speed adjustment target value of the disk granulator. Among them, n m is the target value for adjusting the rotational speed of the disk granulator; ω is the actual humidity of the first mixture; ω0 is the unit humidity; θ is the inclination angle of the disk; is the average diameter of the finished pellets; D B is the target diameter of the finished pellets; g is the acceleration due to gravity; μ is the dynamic friction coefficient between the first mixture and the disk surface; δ is the bulk density of the first mixture; D p is the disk diameter; π is the ratio of the circumference of a circle to its diameter; Step S6232: Calculate the vibration frequency adjustment target value of the disk granulator. Among them, f is the target value for adjusting the vibration frequency of the disk granulator; π is the pi; ω is the actual humidity of the first mixture; G is the elastic coefficient of the elastic element; m is the effective vibration mass carried on the disk; Step S6233: Adjust the actual working parameters of the disk granulator to the corresponding adjustment target values.

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