Geopolymer artificial aggregate production system

Abstract

The utility model discloses a geopolymer artificial aggregate production system, which relates to the technical field of industrial solid waste resource utilization and comprises an ardealite pretreatment device, a geopolymer raw material selection device, a primary mixture preparation device, a geopolymer artificial aggregate preparation device and a conveying device, the conveying device is used for conveying an ardealite treatment material obtained by the ardealite pretreatment device and a geopolymer raw material obtained by the geopolymer raw material selection device to the primary mixture preparation device, and is used for conveying a mixture obtained by the primary mixture preparation device to the geopolymer artificial aggregate preparation device. According to the geopolymer artificial aggregate production system, the comprehensive utilization rate of industrial solid waste is increased, a utilization way is provided for use of the industrial solid waste, the preparation and production technological process has the good continuous degree, industrial production can be conducted, the obtained geopolymer artificial aggregate is stable in quality, and the performance meets the requirement.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial solid waste resource utilization, in particular to a geopolymer artificial aggregate production system. Background Art

[0002] Industrial solid waste is the various waste residues discharged into the environment during industrial production. Most untreated industrial solid waste is stored in piles. This large-scale storage of industrial solid waste leads to a series of problems, including land resource occupation, capital consumption, and environmental pollution. Therefore, there is an urgent need to further explore ways to recycle industrial solid waste and expand its use in various fields.

[0003] Natural aggregate is one of the most widely used materials in China's urbanization projects. Extensive use of natural aggregate leads to the depletion of natural resources and has a negative impact on environmental sustainability. Therefore, using industrial solid waste to prepare artificial aggregates to replace natural aggregates solves the problem of large-scale natural aggregate mining and promotes sustainable industrial development, offering significant economic, environmental, and social benefits.

[0004] There are relatively many existing technologies for producing lightweight aggregates from industrial waste. Some of these technologies fail to fully consider the physical and chemical properties of the industrial waste itself, which not only increases the production cost of artificial aggregates produced from industrial waste but also reduces the utilization rate of industrial waste. Some existing technologies employ inconsistent preparation methods and fail to consider industrial applications. Furthermore, the porosity distribution of the artificial aggregates produced from industrial waste is uneven, resulting in varying quality of the finished products. Therefore, the existing technologies still have shortcomings and deficiencies, and there is a need to provide a geopolymer artificial aggregate production system to address these shortcomings. Utility Model Content

[0005] The purpose of the utility model is to provide a geopolymer artificial aggregate production system, which solves the technical problems in the prior art of low utilization rate of industrial waste and lack of continuity in the preparation method when industrial waste is used as material to prepare lightweight aggregate.

[0006] To achieve the above-mentioned purpose, the present invention provides a geopolymer artificial aggregate production system, comprising:

[0007] A phosphogypsum pretreatment device is used to crush the phosphogypsum raw material and uniformly mix it with the phosphogypsum treatment agent to obtain phosphogypsum treated material;

[0008] A geopolymer raw material selection device is provided on one side of the phosphogypsum pretreatment device and is used to control the precise feeding of the geopolymer raw material;

[0009] A preliminary mixture preparation device for mixing geopolymer raw materials and phosphogypsum treated materials to obtain a uniform mixture;

[0010] A geopolymer artificial aggregate preparation device is provided on one side of the preliminary mixture preparation device and is used to prepare the mixture into geopolymer artificial aggregate;

[0011] A conveying device is used to convey the phosphogypsum treated material obtained by the phosphogypsum pretreatment device and the geopolymer raw material obtained by the geopolymer raw material selection device to the preliminary mixture preparation device, and to convey the mixture obtained by the preliminary mixture preparation device to the geopolymer artificial aggregate preparation device.

[0012] Preferably, the phosphogypsum pretreatment device includes a raw material bin and a horizontal mixer, the horizontal mixer is fixedly installed on the raw material bin, and the discharge port of the raw material bin is provided with a first electric gate valve for controlling the precise discharge of the phosphogypsum treated material.

[0013] Preferably, the geopolymer raw material selection device comprises a screw feeder.

[0014] Preferably, the preliminary mixed material preparation device comprises:

[0015] Material warehouse;

[0016] A vertical mixer, fixedly installed on the material bin;

[0017] A first spray device is fixedly installed in the material bin;

[0018] A high-pressure air nozzle is provided in the material bin and is arranged near the discharge port of the material bin;

[0019] The second electric gate valve is installed at the discharge port of the material port and is used to control the precise discharge of the mixed material.

[0020] Preferably, the geopolymer artificial aggregate preparation device comprises a disc granulator.

[0021] Preferably, the particle size of the geopolymer artificial aggregate prepared by the disc granulator is 4.75 mm to 26.5 mm.

[0022] Preferably, a second spray device is provided in the disc granulator, and the second spray device is used to add moisture during the preparation process of the artificial aggregate.

[0023] Preferably, the invention further comprises a storage bin for storing geopolymer artificial aggregates, wherein a temperature regulator and a humidity regulator are installed in the storage bin.

[0024] Preferably, the temperature in the storage bin is maintained at 10-30° C. by the temperature regulator, and the humidity in the storage bin is maintained at 50%-90% by the humidity regulator.

[0025] Preferably, the conveying device comprises:

[0026] A first belt conveyor is connected to the discharge port of the raw material bin, the discharge port of the screw feeder, and the feed port of the material bin;

[0027] A quantitative feeder, connected to the discharge port of the material bin;

[0028] A bucket elevator is connected to the quantitative feeder and the feed port of the disc granulator;

[0029] The second belt conveyor is communicated with the discharge port of the disc granulator and the storage bin.

[0030] Compared with the above-mentioned background technology, the geopolymer artificial aggregate production system provided by the present invention consumes a large amount of industrial solid waste when preparing geopolymer artificial aggregate, thereby improving the comprehensive utilization rate of industrial solid waste and providing a utilization method for the use of industrial solid waste; the preparation and production process of geopolymer artificial aggregate has a good degree of continuity, can be industrialized, and the obtained geopolymer artificial aggregate has stable quality, meets the performance requirements, and has good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0032] Figure 1 A schematic structural diagram of a geopolymer artificial aggregate production system provided by an embodiment of the present utility model;

[0033] Figure 1 Reference numerals in the accompanying drawings: 10, raw material bin; 11, horizontal mixer; 12, first electric gate valve; 20, screw feeder; 30, material bin; 31, vertical mixer; 32, first spray device; 33, high-pressure air nozzle; 34, second electric gate valve; 40, disc granulator; 41, second spray device; 50, storage bin; 60, first belt conveyor; 61, quantitative feeder; 62, bucket elevator; 63, second belt conveyor. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0036] The utility model provides a geopolymer artificial aggregate production system. The preparation and production process has a good degree of continuity, can be industrialized, and the obtained geopolymer artificial aggregate has stable quality and meets performance requirements.

[0037] Please refer to Figure 1 The geopolymer artificial aggregate production system provided by the utility model includes a phosphogypsum pretreatment device, a geopolymer raw material selection device, a preliminary mixture preparation device, a geopolymer artificial aggregate preparation device and a conveying device. The geopolymer raw material selection device is arranged on one side of the phosphogypsum pretreatment device, and the geopolymer artificial aggregate preparation device is arranged on one side of the preliminary mixture preparation device.

[0038] The phosphogypsum pretreatment device is used to crush the phosphogypsum raw material and uniformly mix it with the phosphogypsum treatment agent to obtain the phosphogypsum treated material; the geopolymer raw material selection device is used to control the precise feeding of the geopolymer raw material; the preliminary mixture preparation device is used to stir the geopolymer raw material and the phosphogypsum treated material to obtain a uniform mixture; the geopolymer artificial aggregate preparation device is used to prepare the mixture into geopolymer artificial aggregate; the conveying device is used to convey the phosphogypsum treated material obtained by the phosphogypsum pretreatment device and the geopolymer raw material obtained by the geopolymer raw material selection device to the preliminary mixture preparation device, and is used to convey the mixture obtained by the preliminary mixture preparation device to the geopolymer artificial aggregate preparation device.

[0039] The preparation of geopolymer artificial aggregates can absorb a large amount of industrial solid waste, providing a favorable way to improve the comprehensive utilization rate of industrial solid waste. Moreover, the preparation and production process of geopolymer artificial aggregates has a good degree of continuity and can be industrially produced. The quality of the obtained geopolymer artificial aggregates is relatively stable.

[0040] Please refer to Figure 1 The phosphogypsum pretreatment device includes a raw material bin 10 and a horizontal mixer 11. The horizontal mixer 11 is fixedly installed on the raw material bin 10. The discharge port of the raw material bin 10 is provided with a first electric gate valve 12 for controlling the precise discharge of the phosphogypsum treated material.

[0041] During use, phosphogypsum raw materials are added to the raw material bin 10. The horizontal mixer 11 operates to crush the phosphogypsum raw materials in the raw material bin 10 and evenly mix the crushed phosphogypsum raw materials with the phosphogypsum treating agent to obtain treated phosphogypsum material. The first electric gate valve 12 then controls the precise discharge of the treated phosphogypsum material. The treated phosphogypsum material is then conveyed to the preliminary mixed material preparation device via a conveying device. The phosphogypsum raw materials can be dihydrate phosphogypsum, hemihydrate phosphogypsum, or a mixture of the two.

[0042] Please refer to Figure 1 The geopolymer raw material selection device includes a screw feeder 20, which integrates steady-flow powder material conveying, weighing, and quantitative control. The geopolymer raw material is added to the screw feeder 20, which precisely controls its discharge. The geopolymer raw material is then transported to the preliminary mixture preparation device via a conveying device.

[0043] Please refer to Figure 1 The preliminary mixed material preparation device includes a material bin 30, a vertical mixer 31, a first spray device 32, a high-pressure air nozzle 33, and a second electric gate valve 34. The vertical mixer 31 is fixedly mounted in the material bin 30; the first spray device 32 is fixedly mounted in the material bin 30; the high-pressure air nozzle 33 is located in the material bin 30, near the discharge port of the material bin 30; and the second electric gate valve 34 is installed at the discharge port of the material bin 30 to control the precise discharge of the mixed material.

[0044] The processed phosphogypsum and geopolymer raw materials are transported to a material bin 30 via a conveying device. A vertical mixer 31 stirs and mixes the materials in the bin 30 to produce a uniform mixture. A first spray device 32 is used to add an admixture in the form of a mist to the bin 30 during stirring and mixing. This addition improves the physical properties of the geopolymer artificial aggregate. The admixture can be a dispersible rubber powder solution. Once the uniform mixture is achieved, the first electric gate valve 12 controls the precise discharge of the mixture. A high-pressure air nozzle 33 is connected to a high-pressure air source to spray high-pressure air to prevent clogging of the discharge port during the discharge of the mixture. The mixture is then transported to the geopolymer artificial aggregate preparation device via the conveying device.

[0045] Specifically, the first spray device 32 is installed at the top of the material bin 30 so that the admixture can fully contact the mixed material. In this embodiment, the first spray device 32 can be an atomizing nozzle.

[0046] Please refer to Figure 1The device for preparing geopolymer artificial aggregate includes a disc granulator 40. The mixed material is transported to the disc granulator 40 through a conveying device. The disc granulator 40 uses a high-speed rotating disc as a working surface to stably form a thin film on the disc and solidify it into particles, thereby preparing geopolymer artificial aggregate.

[0047] Furthermore, the particle size of the geopolymer artificial aggregate prepared by the disc granulator 40 is 4.75 mm to 26.5 mm.

[0048] Please refer to Figure 1 The disc granulator 40 is provided with a second spray device 41 for replenishing moisture during the preparation of the artificial aggregate. The second spray device 41 is mounted on the disc granulator 40. During operation, the second spray device 41 sprays water into the disc granulator 40 in a mist form, providing the moisture required for granulation. In this embodiment, the second spray device 41 may be an atomizing nozzle.

[0049] Please refer to Figure 1 The geopolymer artificial aggregate production system provided by the present invention also includes a storage bin 50 for storing the geopolymer artificial aggregate. A temperature regulator and a humidity regulator are installed in the bin 50. The temperature regulator is used to adjust the temperature within the bin 50, and the humidity regulator is used to adjust the humidity within the bin 50, thereby maintaining the temperature and humidity within the bin 50 within a certain range, thereby facilitating the storage of the geopolymer artificial aggregate.

[0050] Preferably, the temperature in the storage bin 50 is maintained at 10-30° C. by a temperature regulator, and the humidity in the storage bin 50 is maintained at 50%-90% by a humidity regulator. Under these temperature and humidity conditions, the geopolymer artificial aggregate can be stored for a long time.

[0051] Please refer to Figure 1 The conveying device includes a first belt conveyor 60, a quantitative feeder 61, a bucket elevator 62, and a second belt conveyor 63. The first belt conveyor 60 is connected to the discharge port of the raw material bin 10, the discharge port of the screw feeder 20, and the feed port of the material bin 30; the quantitative feeder 61 is connected to the discharge port of the material bin 30; the bucket elevator 62 is connected to the quantitative feeder 61 and the feed port of the disc granulator 40; and the second belt conveyor 63 is connected to the discharge port of the disc granulator 40 and the storage bin 50.

[0052] The first belt conveyor 60 is arranged horizontally, and the phosphogypsum processed material and the geopolymer raw material are conveyed to the material bin 30 by the first belt conveyor 60 for stirring and mixing to obtain a uniform mixture; the quantitative feeder 61 is arranged horizontally, and the mixture is conveyed to the feeding port of the bucket elevator 62 by the quantitative feeder 61, and then the bucket elevator 62 conveys the mixture to the disc granulator 40, and the disc granulator 40 prepares the geopolymer artificial aggregate, and finally the second belt conveyor 63 conveys the geopolymer artificial aggregate to the storage bin 50 for storage.

[0053] The geopolymer artificial aggregate production system provided by this utility model consumes large amounts of industrial solid waste during the production of geopolymer artificial aggregate, thereby improving the comprehensive utilization rate of industrial solid waste and providing a new approach to its utilization. The preparation and production process of the geopolymer artificial aggregate has a high degree of continuity, enabling industrial production. The resulting geopolymer artificial aggregate is of stable quality, with performance meeting the requirements of "Lightweight Aggregates and Their Test Methods" (GB / T17431), resulting in significant economic and social benefits.

[0054] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0055] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art can make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A geopolymer artificial aggregate production system, characterized in that: include: A phosphogypsum pretreatment device is used to crush the phosphogypsum raw material and uniformly mix it with the phosphogypsum treatment agent to obtain phosphogypsum treated material; A geopolymer raw material selection device is provided on one side of the phosphogypsum pretreatment device and is used to control the precise feeding of the geopolymer raw material; A preliminary mixture preparation device for mixing geopolymer raw materials and phosphogypsum treated materials to obtain a uniform mixture; A geopolymer artificial aggregate preparation device is provided on one side of the preliminary mixture preparation device and is used to prepare the mixture into geopolymer artificial aggregate; A conveying device is used to convey the phosphogypsum treated material obtained by the phosphogypsum pretreatment device and the geopolymer raw material obtained by the geopolymer raw material selection device to the preliminary mixture preparation device, and to convey the mixture obtained by the preliminary mixture preparation device to the geopolymer artificial aggregate preparation device.

2. The geopolymer artificial aggregate production system according to claim 1, characterized in that: The phosphogypsum pretreatment device includes a raw material bin and a horizontal mixer. The horizontal mixer is fixedly installed on the raw material bin. The discharge port of the raw material bin is provided with a first electric gate valve for controlling the precise discharge of the phosphogypsum treated material.

3. The geopolymer artificial aggregate production system according to claim 2, characterized in that: The geopolymer raw material selection device comprises a screw feeder.

4. The geopolymer artificial aggregate production system according to claim 3, characterized in that: The preliminary mixed material preparation device comprises: Material warehouse; A vertical mixer, fixedly installed on the material bin; A first spray device is fixedly installed in the material bin; A high-pressure air nozzle is provided in the material bin and is arranged near the discharge port of the material bin; The second electric gate valve is installed at the discharge port of the material bin and is used to control the precise discharge of the mixed material.

5. The geopolymer artificial aggregate production system according to claim 4, characterized in that: The geopolymer artificial aggregate preparation device includes a disc granulator.

6. The geopolymer artificial aggregate production system according to claim 5, characterized in that: The particle size of the geopolymer artificial aggregate prepared by the disc granulator is 4.75 mm to 26.5 mm.

7. The geopolymer artificial aggregate production system according to claim 5, characterized in that: The disc granulator is provided with a second spray device, which is used to add moisture during the preparation of artificial aggregate.

8. The geopolymer artificial aggregate production system according to claim 5, characterized in that: The invention also comprises a storage bin for storing geopolymer artificial aggregates, wherein a temperature regulator and a humidity regulator are installed in the storage bin.

9. The geopolymer artificial aggregate production system according to claim 8, characterized in that: The temperature in the storage bin is maintained at 10-30° C. by the temperature regulator, and the humidity in the storage bin is maintained at 50%-90% by the humidity regulator.

10. The geopolymer artificial aggregate production system according to claim 8, characterized in that: The conveying device comprises: A first belt conveyor is connected to the discharge port of the raw material bin, the discharge port of the screw feeder, and the feed port of the material bin; A quantitative feeder, connected to the discharge port of the material bin; A bucket elevator is connected to the quantitative feeder and the feed port of the disc granulator; The second belt conveyor is communicated with the discharge port of the disc granulator and the storage bin.

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