Production process and equipment of soil conditioner

Abstract

The invention relates to the technical field of soil amendments, in particular to a production process and equipment of a soil amendment, and the process comprises the following steps: grinding and mixing preparation raw materials based on crystal structure atlas of mineral raw materials and infrared spectrum atlas of organic substance raw materials in the preparation raw materials; grinding the mineral substance raw material to obtain a first mixture, and determining to add an organic substance raw material into the first mixture based on the sphericity degree of particles in the first mixture and the energy consumption per unit mass in the grinding process, based on the dynamic angle of repose of the first mixture, determining the rotating speed of the stirrer after the organic substance raw material is added, and stirring and mixing to obtain a second mixture; whether the production process parameters of the soil conditioner are adjusted or not is determined based on the particle uniformity of the soil conditioner obtained after drying treatment. According to the method, the preparation quality and efficiency are improved by improving the control accuracy of the production process of the soil conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of soil conditioners, and in particular to a production process and equipment of a soil conditioner. Background Art

[0002] The early production process of soil conditioners was relatively simple and extensive. In terms of raw material selection, there was a lack of precise screening standards, and the performance of the raw materials was often not fully utilized. For example, for mineral raw materials, there was no optimization based on their crystal structure and other characteristics, resulting in unstable product performance. In terms of production process control, grinding, mixing, drying and other links mostly rely on experience to set parameters and lack scientific basis. This makes the product quality uneven, such as uneven particle size distribution, insufficient mixing of organic and inorganic components, etc., which affects the dispersibility and adsorption of soil conditioners in the soil and the interaction effect with soil particles.

[0003] Chinese patent application publication number: CN113444528A discloses a soil conditioner and its preparation method, wherein the soil conditioner comprises the following components by weight: 50-70 parts of mineral fertilizer, 10-15 parts of biochar, 2-5 parts of furfural residue, 5-10 parts of humic acid, and 0.1-1 parts of microbial liquid. The soil conditioner of this application can adjust the soil charge and restore the balance of the microenvironment ion ecology. It can not only improve the soil in saline-alkali land, but also can be used in combination with ordinary fertilizers to achieve the effect of slow release of fertilizer effect. At the same time, the soil conditioner of this application has a wide range of raw materials for preparation, can make full use of zeolite tailings, has a simple process, and is convenient for large-scale industrial production.

[0004] It can be seen that the existing technology has the problem of insufficiently precise control over the production process of soil conditioners, resulting in low efficiency of the production process of soil conditioners and low performance of the produced soil conditioners. Summary of the invention

[0005] To this end, the present invention provides a computer remote display control system to overcome the problem in the prior art that the production process of the soil conditioner is not precisely controlled, resulting in low efficiency of the soil conditioner production process and low performance of the produced soil conditioner.

[0006] To achieve the above object, the present invention provides a computer remote display control system, comprising:

[0007] Selecting 100 parts by weight of perlite, 50-60 parts by weight of zeolite, 25-35 parts by weight of sepiolite, 35-45 parts by weight of vermiculite and 18-22 parts by weight of bentonite mineral raw materials and 14-16 parts by weight of hydroxypropyl cellulose, 8-12 parts by weight of polyacrylamide, 3-5 parts by weight of humic acid, 2-3 parts by weight of lignin, 5-10 parts by weight of phosphorus pentoxide and 4-5 parts by weight of chelating agent organic material raw materials as raw materials for preparing the soil conditioner;

[0008] Grinding and mixing the raw materials for preparation is determined based on the similarity between the crystal structure spectrum of the mineral raw materials in the raw materials for preparation and the standard crystal structure spectrum and the similarity between the infrared spectrum spectrum of the organic material raw materials and the standard infrared spectrum spectrum;

[0009] Grinding the mineral raw material to obtain a first mixture, and adding an organic raw material to the first mixture based on the proportion of particles in the first mixture whose sphericity is within a preset sphericity range and the energy consumption per unit mass during the grinding process, and determining the speed of a stirrer after adding the organic raw material based on the dynamic angle of repose of the first mixture to perform stirring and mixing to obtain a second mixture;

[0010] Drying the second mixture, and determining the hot air temperature, wind speed and conveyor belt speed of the dryer based on the real-time humidity of the second mixture;

[0011] Based on the particle uniformity of the soil conditioner obtained after drying treatment, it is determined whether to adjust the production process parameters of the soil conditioner, wherein the production process parameters of the soil conditioner include a first preset similarity, a second preset similarity, a first preset dynamic angle of repose, and a second preset dynamic angle of repose.

[0012] Further, the determining to grind and mix the prepared raw materials comprises:

[0013] If the similarity between the crystal structure map of the mineral raw material and the standard crystal structure map in the prepared raw material is greater than or equal to a first preset similarity and the similarity between the infrared spectrum map of the organic material raw material and the standard infrared spectrum map is greater than or equal to a second preset similarity, it is determined that the prepared raw material is ground and mixed.

[0014] Further, the determining to add organic matter raw material to the first mixture comprises:

[0015] If the proportion of the sphericity of the first mixture within the preset sphericity range is greater than or equal to the preset proportion and the energy consumption per unit mass during the grinding process is less than the preset energy consumption per unit mass, it is determined to add organic matter raw materials to the first mixture.

[0016] Furthermore, the preset energy consumption per unit mass is determined according to a historical average energy consumption per unit mass during grinding treatment with the same raw material ratio.

[0017] Further, the determining of the stirring speed of the stirrer after adding the organic material to perform stirring and mixing to obtain the second mixture comprises:

[0018] If the dynamic repose angle of the first mixture is less than or equal to a first preset dynamic repose angle, the stirrer speed is determined to be a first speed for stirring and mixing to obtain a second mixture;

[0019] If the dynamic angle of repose of the first mixture is greater than a first preset dynamic angle of repose and less than or equal to a second preset dynamic angle of repose, determining the agitator speed to be a second speed for agitation and mixing to obtain a second mixture;

[0020] If the dynamic repose angle of the first mixture is greater than the second preset dynamic repose angle, the agitator speed is determined to be a third speed for a stirring and mixing process to obtain a second mixture.

[0021] Further, the step of determining the hot air temperature, wind speed and conveyor belt speed of the dryer based on the real-time humidity of the second mixture includes:

[0022] Pre-enter the optimal drying parameters corresponding to the humidity of the second mixture obtained after grinding and mixing the raw materials with different proportions during the drying process, including hot air temperature, wind speed and conveyor belt speed;

[0023] A high-precision microwave humidity sensor is used to detect the humidity of the second mixture;

[0024] The microwave humidity sensor transmits humidity data to a programmable logic controller in real time, and the programmable logic controller automatically adjusts drying parameters according to a preset humidity-parameter curve.

[0025] Furthermore, the determination of whether to adjust the production process parameters of the soil conditioner includes:

[0026] If the particle uniformity of the soil conditioner obtained after drying is greater than the preset particle uniformity, it is determined that the production process parameters of the soil conditioner are adjusted.

[0027] Furthermore, the preset particle uniformity is determined based on the historical average particle uniformity of the soil conditioner prepared from raw materials with the same ratio.

[0028] Furthermore, the adjustment amount of the first preset similarity is negatively correlated with the number of power surges of the blender, the adjustment amount of the second preset similarity is negatively correlated with the number of power surges of the blender, the first preset dynamic angle of repose is negatively correlated with the number of power surges of the blender, and the second preset dynamic angle of repose is negatively correlated with the number of power surges of the blender.

[0029] A production equipment adopting the production process of the soil conditioner comprises a support base for supporting a ball mill, a support frame connected to the support base for supporting the ball mill, a ball mill connected to the support frame for grinding mineral raw materials, a conveying pipeline connected to the ball mill for outputting a first mixture, a mixer arranged below the conveying pipeline for stirring and mixing the first mixture and organic raw materials to obtain a second mixture, and a fluidized bed dryer arranged below the mixer for drying the second mixture.

[0030] Compared with the prior art, the beneficial effect of the present invention lies in that, by comparing the similarity between the crystal structure map of the mineral raw material and the standard crystal structure map, the present invention can ensure that the selected mineral raw material has a suitable crystal structure, avoid using mineral raw materials with inappropriate crystal structure, and prevent poor performance of the soil improver due to raw material quality problems. By comparing with the standard infrared spectrum map, it can ensure that the selected organic matter has the expected chemical properties and functions, avoid using organic matter raw materials that do not meet the requirements, and improve the quality stability of the soil improver. By screening the raw materials before production, it can avoid problems such as interruption and rework of the production process caused by the use of inappropriate raw materials. For example, if it is found that the raw materials do not meet the requirements during the grinding and mixing process, the raw materials need to be reselected, which will waste a lot of time and resources. By screening the raw materials in advance, the smooth progress of the production process can be ensured and the production efficiency can be improved.

[0031] Furthermore, the present invention determines the timing of adding organic matter according to the sphericity and energy consumption, and can ensure that the first mixture is mixed with the organic matter in the most appropriate state. If the proportion of sphericity within the preset range is high, it means that the shape of the particles is relatively regular, which is conducive to uniform combination with organic matter in the subsequent stirring and mixing process. Considering that the energy consumption per unit mass is less than the preset value, it can avoid excessive energy consumption in the grinding process and reduce production costs. When the energy consumption is low, it means that the grinding process is relatively efficient, and the degree of particle crushing and energy consumption are within a reasonable range. At this time, adding organic matter raw materials can make full use of the state of the particles after grinding to achieve a better mixing effect. The above method improves the accuracy of the production process control of the soil conditioner, thereby improving the efficiency of the soil conditioner production process and the performance of the produced soil conditioner.

[0032] Furthermore, the present invention accurately adjusts the agitator speed according to the dynamic angle of repose, which can make the stirring process more efficient and uniform. When the dynamic angle of repose of the first mixture is small, it indicates that the fluidity of the particles is better. At this time, a lower first speed is used for stirring and mixing, which can not only ensure sufficient mixing, but also avoid excessive stirring that causes particle breakage or generates too much heat. When the dynamic angle of repose is in a medium range, a second speed is used for stirring and mixing. The fluidity of the particles at this stage is moderate, and the agitator speed needs to be appropriately increased to ensure that the organic matter and the minerals are fully contacted and mixed. When the dynamic angle of repose is large, it indicates that the fluidity of the particles is poor, and a higher third speed is required for strong stirring, which can overcome the friction and cohesion between the particles and make the mixture reach a good mixing state. A reasonable agitator speed can shorten the stirring and mixing time and improve production efficiency. By adjusting the agitator speed in real time according to the dynamic angle of repose, the problems of long stirring time or poor mixing effect caused by too high or too low speed can be avoided.

[0033] Furthermore, the present invention can timely discover fluctuations in product quality by comparing the particle uniformity of the soil conditioner after drying treatment with the preset particle uniformity. If the particle uniformity is greater than the preset value, it indicates that the product may have a problem of uneven particle distribution and the production process parameters need to be adjusted. Adjusting the production process parameters according to the number of sudden increases in the power of the mixer can further improve the stability of product quality. The sudden increase in the power of the mixer may mean that an abnormal situation has occurred in the grinding and mixing process, such as raw material agglomeration and equipment failure. When the number of sudden increases in the power of the mixer is greater than or equal to the preset number of sudden increases, it means that the fluidity of the mixture has deteriorated and the dynamic angle of repose has increased. At this time, the preset dynamic angle of repose can be appropriately lowered and the agitator speed can be increased to improve the stirring effect. When the number of sudden increases in the power of the mixer is less than the preset number of sudden increases, the first preset similarity and the second preset similarity are increased to more strictly screen the raw materials, thereby improving the overall quality of the product. The above method improves the accuracy of the production process control of the soil conditioner, thereby improving the production process efficiency of the soil conditioner and the performance of the produced soil conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 The present invention is a flowchart of the production process of the soil conditioner according to the embodiment of the present invention;

[0035] Figure 2 A workflow diagram for determining whether to adjust parameters in the soil conditioner production process in the soil conditioner production process according to an embodiment of the present invention;

[0036] Figure 3 A schematic diagram of the structure of a production device for a production process of a soil conditioner according to an embodiment of the present invention;

[0037] In the figure, 1, support base; 2, support frame; 3, ball mill; 4, conveying pipeline; 5, mixer; 6, fluidized bed dryer. DETAILED DESCRIPTION

[0038] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0039] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0040] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0041] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] See also Figure 1-2 As shown, Figure 1 The present invention is a flowchart of the production process of the soil conditioner according to the embodiment of the present invention; Figure 2 The present invention is a flowchart for determining whether to adjust the parameters of the soil conditioner production process in the soil conditioner production process according to an embodiment of the present invention.

[0043] The embodiment of the present invention provides a production process of a soil conditioner, comprising:

[0044] Step S1, selecting 100 parts by weight of perlite, 50-60 parts by weight of zeolite, 25-35 parts by weight of sepiolite, 35-45 parts by weight of vermiculite and 18-22 parts by weight of bentonite mineral raw materials and 14-16 parts by weight of hydroxypropyl cellulose, 8-12 parts by weight of polyacrylamide, 3-5 parts by weight of humic acid, 2-3 parts by weight of lignin, 5-10 parts by weight of phosphorus pentoxide and 4-5 parts by weight of chelating agent organic material raw materials as raw materials for preparing soil conditioner;

[0045] Step S2, grinding and mixing the raw materials for preparation based on the similarity between the crystal structure spectrum of the mineral raw material and the standard crystal structure spectrum and the similarity between the infrared spectrum of the organic material raw material and the standard infrared spectrum;

[0046] Step S3, grinding the mineral raw material to obtain a first mixture, and adding an organic raw material to the first mixture based on the proportion of particles in the first mixture whose sphericity is within a preset sphericity range and the energy consumption per unit mass during the grinding process, and determining the speed of a stirrer after adding the organic raw material based on the dynamic angle of repose of the first mixture to perform stirring and mixing to obtain a second mixture;

[0047] Step S4, drying the second mixture, and determining the hot air temperature, wind speed and conveyor belt speed of the dryer based on the real-time humidity of the second mixture;

[0048] Step S5, determining whether to adjust the production process parameters of the soil conditioner based on the particle uniformity of the soil conditioner obtained after drying, wherein the production process parameters of the soil conditioner include a first preset similarity, a second preset similarity, a first preset dynamic angle of repose, and a second preset dynamic angle of repose.

[0049] In one embodiment of the present invention, 100 parts by weight of perlite, 50 parts by weight of zeolite, 25 parts by weight of sepiolite, 35 parts by weight of vermiculite and 18 parts by weight of bentonite mineral raw materials and 14 parts by weight of hydroxypropyl cellulose, 8 parts by weight of polyacrylamide, 3 parts by weight of humic acid, 2 parts by weight of lignin, 5 parts by weight of phosphorus pentoxide and 4 parts by weight of chelating agent organic matter raw materials are selected as raw materials for preparing the soil conditioner.

[0050] In another embodiment of the present invention, 100 parts by weight of perlite, 60 parts by weight of zeolite, 35 parts by weight of sepiolite, 45 parts by weight of vermiculite and 22 parts by weight of bentonite mineral raw materials and 16 parts by weight of hydroxypropyl cellulose, 12 parts by weight of polyacrylamide, 5 parts by weight of humic acid, 3 parts by weight of lignin, 10 parts by weight of phosphorus pentoxide and 5 parts by weight of chelating agent organic matter raw materials are selected as raw materials for preparing the soil conditioner.

[0051] Specifically, in step S2, when it is determined that the raw materials for preparation are ground and mixed, it is determined whether to grind and mix the raw materials for preparation according to the similarity between the crystal structure spectrum of the mineral raw materials in the raw materials for preparation and the standard crystal structure spectrum and the similarity between the infrared spectrum spectrum of the organic material raw materials and the standard infrared spectrum spectrum;

[0052] When the similarity between the crystal structure spectrum of the mineral raw material and the standard crystal structure spectrum in the preparation raw material is greater than or equal to a first preset similarity and the similarity between the infrared spectrum of the organic material raw material and the standard infrared spectrum is greater than or equal to a second preset similarity, determining to grind and mix the preparation raw material;

[0053] When the similarity between the crystal structure map of the mineral raw material in the preparation raw material and the standard crystal structure map is less than the first preset similarity or the similarity between the infrared spectrum map of the organic material raw material and the standard infrared spectrum map is less than the second preset similarity, it is determined to reselect the preparation raw material.

[0054] In the embodiment of the present invention, the value range of the first preset similarity is set to 0.75-0.85, and the value of the first preset similarity is preferably 0.8. The value range of the second preset similarity is set to 0.7-0.8, and the value of the second preset similarity is preferably 0.78, but the above values ​​are not limited to this, and technicians in this field can also adjust the values ​​according to actual needs.

[0055] The crystal structure spectrum of the mineral raw material in the preparation raw material described in the embodiment of the present invention can be obtained by X-ray diffraction analysis (XRD). X-rays are used to irradiate mineral crystals. Due to the periodicity of the atomic arrangement in the crystal, the X-rays will diffract at specific angles. By measuring the diffraction intensity at different angles, the structure of the crystal can be determined; prepare the mineral raw material sample and grind it to a certain fineness to ensure that the X-rays can fully penetrate the sample and produce a clear diffraction pattern. Place the sample on the sample stage of the X-ray diffractometer, set appropriate parameters such as X-ray wavelength, scanning range and scanning speed; start the X-ray diffractometer, the instrument will automatically scan the sample and record the diffraction data; analyze and process the obtained diffraction data, and use professional XRD analysis software to convert the data into a crystal structure spectrum.

[0056] The infrared spectrum of the organic material raw material described in the embodiment of the present invention can be obtained by irradiating the organic material sample with infrared light. The molecules in the sample will absorb infrared light of a specific wavelength to produce an infrared absorption spectrum. Different functional groups have specific absorption peak positions in the infrared spectrum. The molecular structure and functional group composition of the organic material can be determined by analyzing the infrared spectrum. The organic material raw material sample is prepared, usually made into a thin sheet or powder, and the sample is placed in the sample chamber of the FTIR instrument. The appropriate infrared light wavelength range, resolution, scanning times and other parameters are set, and the FTIR instrument is started. The instrument will automatically scan the sample and record the infrared absorption spectrum data. The obtained infrared spectrum data is analyzed and processed, and the data can be converted into an infrared spectrum using professional infrared spectrum analysis software.

[0057] The present invention can ensure that the selected mineral raw material has a suitable crystal structure by comparing the similarity between the crystal structure map of the mineral raw material and the standard crystal structure map, avoid using the mineral raw material with an inappropriate crystal structure, and prevent the poor performance of the soil improver due to raw material quality problems. It can also ensure that the selected organic matter has the expected chemical properties and functions by comparing with the standard infrared spectrum map, avoid using the organic matter raw material that does not meet the requirements, and improve the quality stability of the soil improver. The raw materials are screened before production, which can avoid problems such as interruption of the production process and rework caused by the use of inappropriate raw materials. For example, if it is found that the raw materials do not meet the requirements during the grinding and mixing process, the raw materials need to be reselected, which will waste a lot of time and resources. By screening the raw materials in advance, the smooth progress of the production process can be ensured and the production efficiency can be improved.

[0058] Specifically, in step S3, when it is determined to add organic raw materials to the first mixture, it is determined whether to add organic raw materials to the first mixture according to the proportion of sphericity of particles in the first mixture within a preset sphericity range and the energy consumption per unit mass during the grinding process;

[0059] When the proportion of the sphericity of the first mixture within the preset sphericity range is greater than or equal to the preset proportion and the energy consumption per unit mass during the grinding process is less than the preset energy consumption per unit mass, determining to add the organic material to the first mixture;

[0060] When the proportion of the sphericity of the first mixture within the preset sphericity range is less than a preset proportion or the energy consumption per unit mass during the grinding process is greater than or equal to the preset energy consumption per unit mass, it is determined to perform secondary grinding.

[0061] The value range of the preset ratio in the embodiment of the present invention is set to 0.7-1, and the value of the preset ratio is preferably 0.83. The preset unit mass energy consumption is the historical average value of the unit mass energy consumption during the grinding process under the same ratio of raw materials, but the above value is not limited to this. Technical personnel in this field can also adjust the value according to actual needs.

[0062] The energy consumption per unit mass in the grinding process in the embodiment of the present invention is obtained by dividing the total energy consumption in the grinding process by the mass of the product after grinding. The sphericity is the surface area of ​​a sphere with the same volume as the particle divided by the actual surface area of ​​the particle. The closer the sphericity is to 1, the closer the particle is to a sphere. The preset sphericity range is set to 0.8 to 1, but the above values ​​are not limited to this. Those skilled in the art can also adjust the value according to actual needs.

[0063] The present invention determines the timing of adding organic matter according to the sphericity and energy consumption, and can ensure that the first mixture is mixed with the organic matter in the most appropriate state. If the proportion of sphericity within the preset range is high, it means that the shape of the particles is relatively regular, which is conducive to uniform combination with organic matter in the subsequent stirring and mixing process. Considering that the energy consumption per unit mass is less than the preset value, excessive energy consumption in the grinding process can be avoided, and production costs can be reduced. When the energy consumption is low, it means that the grinding process is relatively efficient, and the degree of particle crushing and energy consumption are within a reasonable range. At this time, adding organic matter raw materials can make full use of the state of the ground particles and achieve a better mixing effect. The above method improves the accuracy of the production process control of the soil conditioner, thereby improving the efficiency of the soil conditioner production process and the performance of the produced soil conditioner.

[0064] Specifically, in step S3, when determining the agitator speed after adding the organic raw material to perform a stirring and mixing process to obtain the second mixture, the agitator speed after adding the organic raw material to perform a stirring and mixing process to obtain the second mixture is determined according to the dynamic repose angle of the first mixture;

[0065] When the dynamic repose angle of the first mixture is less than or equal to a first preset dynamic repose angle, determining the agitator speed to be a first speed to perform a stirring and mixing process to obtain a second mixture;

[0066] When the dynamic repose angle of the first mixture is greater than the first preset dynamic repose angle and less than or equal to the second preset dynamic repose angle, determining the agitator speed to be the second speed for agitation and mixing to obtain a second mixture;

[0067] When the dynamic repose angle of the first mixture is greater than the second preset dynamic repose angle, the agitator speed is determined to be a third speed for a stirring and mixing process to obtain a second mixture.

[0068] In the embodiment of the present invention, the first preset dynamic repose angle is set to 30°, the second preset dynamic repose angle is set to 45°, the first speed, the second speed and the third speed are respectively determined by the historical average speed of the agitator within the corresponding dynamic repose angle range, but the above values ​​are not limited to this, and technical personnel in this field can also adjust the values ​​according to actual needs.

[0069] The present invention accurately adjusts the agitator speed according to the dynamic angle of repose, so as to make the stirring process more efficient and uniform. When the dynamic angle of repose of the first mixture is small, it indicates that the fluidity of the particles is good. At this time, a lower first speed is used for stirring and mixing, which can not only ensure sufficient mixing, but also avoid excessive stirring that causes particle breakage or generates too much heat. When the dynamic angle of repose is in a medium range, a second speed is used for stirring and mixing. The fluidity of the particles at this stage is moderate, and the agitator speed needs to be appropriately increased to ensure that the organic matter and the mineral matter are fully contacted and mixed. When the dynamic angle of repose is large, it indicates that the fluidity of the particles is poor, and a higher third speed is required for strong stirring, which can overcome the friction and cohesion between the particles and make the mixture reach a good mixing state. A reasonable agitator speed can shorten the stirring and mixing time and improve production efficiency. By adjusting the agitator speed in real time according to the dynamic angle of repose, the problems of long stirring time or poor mixing effect caused by too high or too low speed can be avoided.

[0070] Specifically, in step S4, the step of determining the hot air temperature, wind speed and conveyor belt speed of the dryer based on the real-time humidity of the second mixture includes:

[0071] Pre-enter the optimal drying parameters corresponding to the humidity of the second mixture obtained after grinding and mixing the raw materials with different proportions during the drying process, including hot air temperature, wind speed and conveyor belt speed;

[0072] A high-precision microwave humidity sensor is used to detect the humidity of the second mixture;

[0073] The microwave humidity sensor transmits humidity data to a programmable logic controller in real time, and the programmable logic controller automatically adjusts drying parameters according to a preset humidity-parameter curve.

[0074] Specifically, in step S5, when determining whether to adjust the production process parameters of the soil conditioner, it is determined whether to adjust the production process parameters of the soil conditioner according to the comparison result of the particle uniformity of the soil conditioner obtained after drying and the preset particle uniformity;

[0075] When the particle uniformity of the soil conditioner obtained after drying is greater than a preset particle uniformity, determining to adjust the production process parameters of the soil conditioner;

[0076] When the particle uniformity of the soil conditioner obtained after drying is less than or equal to the preset particle uniformity, determining not to adjust the production process parameters of the soil conditioner;

[0077] Among them, the preset particle uniformity is the historical average particle uniformity of the soil conditioner prepared with the same ratio of raw materials, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0078] In the embodiment of the present invention, the soil conditioner particles can be observed by using an optical microscope or an electron microscope, and the image of the particles can be collected. By analyzing the image, the size, shape and distribution of the particles can be determined, so as to evaluate the uniformity of the particles. The soil conditioner sample is prepared into a thin sheet or powder suitable for microscopic observation. For an optical microscope, the sample can be placed on a glass slide and covered with a cover glass. For an electron microscope, the sample needs to be specially processed, such as gold spraying, to improve the conductivity of the sample. The sample is placed under a microscope for observation, and the focus and magnification are adjusted to make the particles clearly visible. The image of the particles is collected using the camera of the microscope or an external image acquisition device, and the collected particle image is processed using image analysis software. First, the image is binarized to separate the particles from the background. Then, the outline of the particles is determined by the edge detection algorithm. Based on the outline of the particles, the size and shape parameters of the particles can be measured. The images of a large number of particles are analyzed to count the number and proportion of particles of different sizes and shapes. The uniformity of the particles can be expressed by indicators such as the standard deviation and coefficient of variation of the particle size and shape. For example, if the coefficient of variation of the particle size is small, it means that the particle size distribution is relatively uniform.

[0079] Specifically, in step S5, when determining to adjust the production process parameters of the soil conditioner, the adjustment method is determined according to the comparison result of the number of sudden increases in the power of the mixer during the grinding and mixing process and the preset number of sudden increases;

[0080] When the number of sudden increases in the power of the mixer during the grinding and mixing process is greater than or equal to a preset number of sudden increases, determining to adjust the first preset dynamic angle of repose and the second preset dynamic angle of repose by a first adjustment coefficient;

[0081] When the number of sudden increases in the power of the mixer during the grinding and mixing process is greater than or equal to the preset number of sudden increases, determining to adjust the first preset similarity and the second preset similarity by a second adjustment coefficient;

[0082] Among them, the preset number of sudden increases is the historical average number of sudden increases in the mixer power when the soil conditioner is prepared using the same ratio of raw materials, but the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0083] In the embodiment of the present invention, the judgment of the sudden increase in mixer power includes that the increase in the mixer power within a preset time is greater than the preset increase. The preset time is set to 20 seconds. The preset increase is the historical average value of the increase in the mixer power within the preset time when the soil conditioner is prepared using the same ratio of raw materials. However, the above value is not limited to this, and technical personnel in this field can also adjust the value according to actual needs.

[0084] In the embodiment of the present invention, the value range of the first adjustment coefficient is set to 1.05~1.18, the value range of the second adjustment coefficient is set to 0.85~0.96, the adjustment amount of the first preset similarity is negatively correlated with the number of power surges of the blender, the adjustment amount of the second preset similarity is negatively correlated with the number of power surges of the blender, the first preset dynamic repose angle is negatively correlated with the number of power surges of the blender, and the second preset dynamic repose angle is negatively correlated with the number of power surges of the blender.

[0085] The present invention can timely discover fluctuations in product quality by comparing the particle uniformity of the soil conditioner after drying treatment with the preset particle uniformity. If the particle uniformity is greater than the preset value, it indicates that the product may have a problem of uneven particle distribution and needs to adjust the production process parameters. Adjusting the production process parameters according to the number of sudden increases in the power of the mixer can further improve the stability of product quality. The sudden increase in the power of the mixer may mean that an abnormal situation has occurred in the grinding and mixing process, such as raw material agglomeration and equipment failure. When the number of sudden increases in the power of the mixer is greater than or equal to the preset number of sudden increases, it indicates that the fluidity of the mixture has deteriorated and the dynamic angle of repose has increased. At this time, the preset dynamic angle of repose can be appropriately reduced and the agitator speed can be increased to improve the stirring effect. When the number of sudden increases in the power of the mixer is less than the preset number of sudden increases, the first preset similarity and the second preset similarity are increased to more strictly screen the raw materials, thereby improving the overall quality of the product. The above method improves the accuracy of the production process control of the soil conditioner, thereby improving the production process efficiency of the soil conditioner and the performance of the produced soil conditioner.

[0086] See also Figure 3 As shown, Figure 3 It is a structural schematic diagram of the production equipment of the production process of the soil conditioner according to an embodiment of the present invention.

[0087] Specifically, the production equipment using the production process of the soil conditioner includes:

[0088] A support base 1 for supporting a ball mill, a support frame 2 connected to the support base for supporting the ball mill, a ball mill 3 connected to the support frame for grinding mineral raw materials, a conveying pipe 4 connected to the ball mill for outputting a first mixture, a mixer 5 arranged below the conveying pipe for stirring and mixing the first mixture and organic raw materials to obtain a second mixture, and a fluidized bed dryer 6 arranged below the mixer for drying the second mixture.

[0089] Example 1: 100 parts by weight of perlite, 50 parts by weight of zeolite, 25 parts by weight of sepiolite, 35 parts by weight of vermiculite and 18 parts by weight of bentonite mineral raw materials and 14 parts by weight of hydroxypropyl cellulose, 8 parts by weight of polyacrylamide, 3 parts by weight of humic acid, 2 parts by weight of lignin, 5 parts by weight of phosphorus pentoxide and 4 parts by weight of chelating agent organic matter raw materials are selected as raw materials for preparing a soil conditioner, the soil conditioner production process of the present invention is selected to prepare the soil conditioner, and the duration data of the entire preparation process is recorded, as well as the particle size variance data and density data of the prepared soil conditioner are measured.

[0090] Example 2: 100 parts by weight of perlite, 60 parts by weight of zeolite, 35 parts by weight of sepiolite, 45 parts by weight of vermiculite and 22 parts by weight of bentonite mineral raw materials and 16 parts by weight of hydroxypropyl cellulose, 12 parts by weight of polyacrylamide, 5 parts by weight of humic acid, 3 parts by weight of lignin, 10 parts by weight of phosphorus pentoxide and 5 parts by weight of chelating agent organic matter raw materials are selected as raw materials for preparing a soil conditioner, the soil conditioner production process of the present invention is selected to prepare the soil conditioner, and the duration data of the entire preparation process is recorded, as well as the particle size variance data and density data of the prepared soil conditioner are measured.

[0091] Comparative Example: 100 parts by weight of perlite, 50 parts by weight of zeolite, 25 parts by weight of sepiolite, 35 parts by weight of vermiculite and 18 parts by weight of bentonite mineral raw materials and 14 parts by weight of hydroxypropyl cellulose, 8 parts by weight of polyacrylamide, 3 parts by weight of humic acid, 2 parts by weight of lignin, 5 parts by weight of phosphorus pentoxide and 4 parts by weight of chelating agent organic matter raw materials are selected as raw materials for preparing soil conditioner, the soil conditioner is prepared by using a general soil conditioner production process, and the duration data of the entire preparation process is recorded, as well as the particle size variance data and density data of the prepared soil conditioner are measured.

[0092] Record data form:

[0093]

[0094] By recording the data in the data table, it can be concluded that the preparation time of the soil improver prepared by the present invention is shorter than the preparation time of the soil improver prepared by the general method, and the preparation efficiency of the soil improver is improved by preparing the soil improver by the present invention. It can also be concluded by recording the data in the data table that the soil improver prepared by the present invention not only has a uniform particle size compared with the soil improver prepared by the general method, but also the density of the soil improver is closer to the preset density, and the performance of the soil improver is improved by preparing the soil improver by the present invention.

[0095] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0096] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A production process of a soil conditioner, characterized in that: include: Selecting 100 parts by weight of perlite, 50-60 parts by weight of zeolite, 25-35 parts by weight of sepiolite, 35-45 parts by weight of vermiculite and 18-22 parts by weight of bentonite mineral raw materials and 14-16 parts by weight of hydroxypropyl cellulose, 8-12 parts by weight of polyacrylamide, 3-5 parts by weight of humic acid, 2-3 parts by weight of lignin, 5-10 parts by weight of phosphorus pentoxide and 4-5 parts by weight of chelating agent organic material raw materials as raw materials for preparing the soil conditioner; Grinding and mixing the raw materials for preparation is determined based on the similarity between the crystal structure spectrum of the mineral raw materials in the raw materials for preparation and the standard crystal structure spectrum and the similarity between the infrared spectrum spectrum of the organic material raw materials and the standard infrared spectrum spectrum; Grinding the mineral raw material to obtain a first mixture, and adding an organic raw material to the first mixture based on the proportion of particles in the first mixture whose sphericity is within a preset sphericity range and the energy consumption per unit mass during the grinding process, and determining the speed of a stirrer after adding the organic raw material based on the dynamic angle of repose of the first mixture to perform stirring and mixing to obtain a second mixture; Drying the second mixture, and determining the hot air temperature, wind speed and conveyor belt speed of the dryer based on the real-time humidity of the second mixture; Based on the particle uniformity of the soil conditioner obtained after drying treatment, it is determined whether to adjust the production process parameters of the soil conditioner, wherein the production process parameters of the soil conditioner include a first preset similarity, a second preset similarity, a first preset dynamic angle of repose, and a second preset dynamic angle of repose.

2. The production process of the soil conditioner according to claim 1, characterized in that: The determining to grind and mix the prepared raw materials comprises: If the similarity between the crystal structure map of the mineral raw material and the standard crystal structure map in the prepared raw material is greater than or equal to a first preset similarity and the similarity between the infrared spectrum map of the organic material raw material and the standard infrared spectrum map is greater than or equal to a second preset similarity, it is determined that the prepared raw material is ground and mixed.

3. The production process of the soil conditioner according to claim 2, characterized in that: The step of adding organic matter raw material to the first mixture comprises: If the proportion of the sphericity of the first mixture within the preset sphericity range is greater than or equal to the preset proportion and the energy consumption per unit mass during the grinding process is less than the preset energy consumption per unit mass, it is determined to add organic matter raw materials to the first mixture.

4. The production process of the soil conditioner according to claim 3, characterized in that: The preset energy consumption per unit mass is determined according to the historical average energy consumption per unit mass during the grinding process under the same ratio of raw materials.

5. The production process of the soil conditioner according to claim 4, characterized in that: The step of determining the stirring speed of the stirrer after adding the organic material raw material to perform stirring and mixing to obtain the second mixture comprises: If the dynamic repose angle of the first mixture is less than or equal to a first preset dynamic repose angle, the stirrer speed is determined to be a first speed for stirring and mixing to obtain a second mixture; If the dynamic angle of repose of the first mixture is greater than a first preset dynamic angle of repose and less than or equal to a second preset dynamic angle of repose, determining the agitator speed to be a second speed for agitation and mixing to obtain a second mixture; If the dynamic repose angle of the first mixture is greater than the second preset dynamic repose angle, the agitator speed is determined to be a third speed for a stirring and mixing process to obtain a second mixture.

6. The production process of the soil conditioner according to claim 5, characterized in that: The step of determining the hot air temperature, wind speed and conveyor belt speed of the dryer based on the real-time humidity of the second mixture comprises: Pre-enter the optimal drying parameters corresponding to the humidity of the second mixture obtained after grinding and mixing the raw materials with different proportions during the drying process, including hot air temperature, wind speed and conveyor belt speed; A high-precision microwave humidity sensor is used to detect the humidity of the second mixture; The microwave humidity sensor transmits humidity data to a programmable logic controller in real time, and the programmable logic controller automatically adjusts drying parameters according to a preset humidity-parameter curve.

7. The production process of the soil conditioner according to claim 6, characterized in that: The determination of whether to adjust the production process parameters of the soil conditioner comprises: If the particle uniformity of the soil conditioner obtained after drying is greater than the preset particle uniformity, it is determined that the production process parameters of the soil conditioner are adjusted.

8. The production process of the soil conditioner according to claim 7, characterized in that: The preset particle uniformity is determined based on the historical average particle uniformity of the soil conditioner prepared from raw materials with the same ratio.

9. The production process of the soil conditioner according to claim 8, characterized in that: The adjustment amount of the first preset similarity is negatively correlated with the number of power surges of the blender, the adjustment amount of the second preset similarity is negatively correlated with the number of power surges of the blender, the first preset dynamic angle of repose is negatively correlated with the number of power surges of the blender, and the second preset dynamic angle of repose is negatively correlated with the number of power surges of the blender.

10. A production equipment used in the production process of the soil conditioner according to any one of claims 1 to 9, characterized in that: The invention comprises a support base for supporting a ball mill, a support frame connected to the support base for supporting the ball mill, a ball mill connected to the support frame for grinding mineral raw materials, a conveying pipeline connected to the ball mill for outputting a first mixture, a mixer arranged below the conveying pipeline for stirring and mixing the first mixture and organic raw materials to obtain a second mixture, and a fluidized bed dryer arranged below the mixer for drying the second mixture.

Images