Preparation device of coal gangue soil conditioner and preparation method of conditioner

Abstract

The invention discloses a preparation device of a coal gangue soil conditioner and a preparation method of the conditioner, and relates to the field of solid waste utilization and tailing utilization, the preparation device comprises a supporting assembly, the supporting assembly comprises an operation table, an air screen assembly is arranged at the top of the operation table, and a mixing assembly and a fermentation assembly are arranged on the outer side of the operation table; when the coal gangue ball mill is used, the driving motor is started to enable the output shaft of the driving motor to rotate, so that the double-shaft gear is driven to be meshed to drive the driven gear ring to rotate, the ball milling barrel continuously rotates to grind coal gangue raw materials in the ball milling barrel into powder, and the ground coal gangue is discharged from the material conveying opening and then is conveyed into the air screening chamber; when coal gangue is crushed, the crushed coal gangue is downwards conveyed to the area close to the feeding pipeline along the inclined discharging sliding plate, by starting the draught fan, airflow generated by the draught fan blows coal powder particles forwards, the coal powder particles penetrate through the screen and enter the feeding pipeline, remaining materials can be taken out by opening the sealing plate, and therefore separation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of tailings utilization of solid waste, and in particular to a preparation device of a coal gangue soil conditioner and a preparation method of the conditioner. Background Art

[0002] Gangue is a kind of solid tailings of coal mineral products. It is solid waste generated in the process of coal mining and coal selection. The composition of gangue in different regions is different. The main components are silicon dioxide, aluminum oxide, iron oxide, calcium oxide and a small amount of magnesium oxide, titanium dioxide, etc. Gangue contains 20%-30% carbon. Human beings have a long history of using coal as fuel. Especially after the beginning of the industrial age, coal is the main material for human energy acquisition. In this way, gangue is accumulated and stored in large quantities in coal-producing areas. Billions of tons of gangue have been stored. With the rise of coal chemical industry, the amount of coal mining has increased, so that tens of millions of tons of gangue are produced each year. The existence of gangue not only accumulates and occupies land, but also spontaneously combusts to produce a large amount of harmful gases, which can cause fires. Some places with accumulated gangue will produce geological landslides and water pollution, thus causing serious damage to the environmental ecology.

[0003] With the development of industrialization, society has more urgent requirements for optimizing the ecological environment for human survival. Ecological environment improvement plans have been proposed, and various policies have been formulated to list the corresponding ecological environment red lines. The treatment of coal gangue has become an important ecological environment improvement issue that science and technology, enterprises and all aspects of society are concerned about and urgently need to be solved. Nowadays, coal gangue is mainly used as a lightweight aggregate for the production of cement and concrete, refractory bricks or ground permeable bricks and other building materials. Different components in coal gangue are also used to prepare crystalline aluminum chloride, aluminum sulfate, alumina and sodium silicate, white carbon black, high-purity silica, extract useful metal elements from coal gangue, and even use coal and coal gangue to generate electricity.

[0004] In the existing technology, coal and coal gangue are used together to generate a large amount of fly ash to make the secondary solid waste more serious in environmental ecological damage. The production of building materials is large in amount, and the coal-producing areas and the use areas of building materials do not overlap, resulting in excessive costs for development and utilization enterprises, and the utilization rate has always been very low. Chemical treatment methods are used because the components of coal gangue are more than three, the process procedures are many, and the amount of chemical raw materials used is large. The purification treatment will increase the cost, and there is a certain distance between the coal production area and the chemical raw material production area. In this way, the transportation safety requirements are high and the cost is difficult to reduce. As a result, enterprises are unwilling to engage in the industry of chemical treatment of coal gangue. Therefore, it is necessary to research and develop new technologies that can digest coal gangue in large quantities without causing secondary ecological environmental damage, and have low comprehensive utilization costs.

[0005] Therefore, we propose a preparation device for a coal gangue soil conditioner and a preparation method for the conditioner in order to solve the above-mentioned problems. Summary of the invention

[0006] The purpose of the present invention is to provide a device for preparing a coal gangue soil conditioner and a method for preparing the conditioner, so as to solve the problem that the existing large-scale production of coal gangue will cause secondary ecological environment damage as mentioned in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a preparation device for a coal gangue soil conditioner, comprising a support assembly, the support assembly comprising an operating table, a wind screen assembly is arranged on the top of the operating table, a mixing assembly and a fermentation assembly are arranged on the outside of the operating table, the mixing assembly, the mixing assembly comprising a stirring tank, the top of the stirring tank is fixedly connected with a feeding port, the top snap-fit ​​cover of the feeding port is provided with a closing cover, a servo motor is arranged on the top of the stirring tank through a mounting plate, the output shaft of the servo motor is fixedly connected with an I-shaped shaft, the I-shaped shaft is rotatably embedded in the top of the stirring tank, the bottom of the I-shaped shaft is fixedly connected with a rotating rod, and the outer surface of the rotating rod is fixedly connected with a plurality of stirring blades; the fermentation assembly comprises a fermentation tank, and the fermentation tank is used to ferment the mixed material, a constant temperature heating belt is arranged on the outside of the fermentation tank, and the constant temperature heating belt is used to keep the internal temperature of the fermentation tank at a constant temperature, and a discharge pipe is fixedly connected with the outer surface of the fermentation tank near the bottom, and the discharge pipe is used to discharge the fermented material.

[0008] Preferably, the bottom of the operating table is fixedly connected with support columns near the four corners, wherein two connecting rods are fixedly connected between two of the support columns, and the outer surfaces of the two connecting rods are fixedly connected with reinforcement blocks.

[0009] Preferably, a crushing assembly is fixedly connected to the top of the operating table, and the crushing assembly includes two fixed frames, a ball mill barrel is rotatably connected between the inner walls of the two fixed frames through a bearing, the outer surface of the ball mill barrel is fixedly connected to a feed port, and the outer surface of the ball mill barrel is fixedly sleeved with a driven gear ring.

[0010] Preferably, a support bracket is fixedly connected to the top of the operating table, and two support brackets are fixedly connected to the top of the support bracket near one side, and a double-axis gear is rotatably connected between the two support brackets. A driving motor is arranged at the top of the support bracket near the other side, and the output shaft of the driving motor is fixedly connected to one end of the double-axis gear, and the outer surface of the double-axis gear is meshingly connected to the outer surface of the driven gear ring.

[0011] Preferably, the wind screen assembly includes a wind screen chamber, a feed port is opened on the top of the wind screen chamber, a closing plate is arranged on the front surface of the wind screen chamber, and a screen is fixedly installed on one side of the inner wall of the wind screen chamber.

[0012] Preferably, a fan is arranged on the top of the operating table, and the output port of the fan penetrates into the interior of the wind screening chamber, and a material discharge slide plate is fixedly connected to the inner wall of the wind screening chamber.

[0013] Preferably, the bottom of the stirring tank is fixedly connected to a feed pipe, the top of the feed pipe is connected to the top input port of the fermentation tank through a flange, a valve is provided on the outer surface of the feed pipe, the top of the stirring tank is fixedly connected to a feed pipe, and one end of the feed pipe is fixedly passed through the inside of the side of the wind screen chamber close to the screen.

[0014] A method for preparing a coal gangue soil conditioner comprises the following steps:

[0015] The first step is to crush the coal gangue to 100 mesh;

[0016] The second step is to separate the coal powder particles by air screening method;

[0017] The third step is to mix the gangue powder obtained in the second step, the solid urban organic waste, and the excrement sucked out by the septic tank suction truck in a ratio of 50:20:30;

[0018] Step 4: Stir and pile evenly;

[0019] Step 5: Cover and keep the temperature at 40℃-55℃;

[0020] Step 6: Keep the temperature in step 5 to ferment for 30-40 days;

[0021] The seventh step is to remove the larger solids such as plastics, ceramics, cement, bricks, metal fragments, etc. that have not been digested during the fermentation process from the fermented products in the sixth step and granulate them into bulk to obtain high-quality soil conditioner.

[0022] Preferably, the covering and maintaining temperature in the fifth step is to ensure that the microorganisms ferment and decompose the urban solid waste, excrete the odor in the waste, decompose nitrogen, phosphorus, and potassium, and decompose the metal elements in the coal gangue effectively. If the temperature is lower than 40°C, the fermentation time will be too long. If the temperature is higher than 55°C, the decomposition rate will be too fast, and methane and nitrogen will be produced at the same time.

[0023] Preferably, the number of days for maintaining fermentation in step 6 is an effective time for sufficient fermentation.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 1. When in use, start the drive motor to rotate its output shaft, thereby driving the double-axis gear to engage and drive the driven gear ring to rotate. The ball mill barrel rotates continuously to grind the internal coal gangue raw materials into powder. The ground coal gangue is discharged from the feed port and then transported to the inside of the wind screen chamber. The crushed coal gangue is transported downward along the inclined discharge slide to the area close to the feed pipe. By starting the fan, the airflow generated will blow the coal powder particles forward, through the screen into the feed pipe, and the remaining materials can be taken out by opening the closing plate, thereby achieving separation. The separated coal powder particles enter the interior of the mixing tank, and solid urban organic waste and excrement sucked out by the septic tank suction truck are added from the feeding port, and then the closing cover is closed.

[0026] 2. When in use, close the valve, start the servo motor to make its output shaft drive the I-shaft and the rotating rod to rotate. During rotation, the stirring blades continuously stir and mix the gangue powder, solid urban organic waste, and excrement sucked out of the septic tank suction truck. After mixing, open the valve to keep the discharge pipe unobstructed. Then, in the process of continuing mixing, the mixed material will pass through the discharge pipe into the fermentation tank. By energizing the constant temperature heating belt, its temperature is maintained at 40℃-55℃. After the discharge is completed, close the valve and separate the discharge pipe from the fermentation tank. After separation, seal the fermentation tank so that the material inside the fermentation tank is fermented under constant temperature regulation. The material after fermentation is discharged through the discharge pipe, which can not only digest a large amount of gangue, but also avoid secondary ecological environmental damage.

[0027] 3. When in use, the gangue used should be ground into 100-mesh powder, which is conducive to the separation of coal powder particles by wind screening method, the absorption of moisture in the sewage suction truck, and the release of metal ions in the gangue during the fermentation process. The second step is to use the screening method to separate the coal powder particles in the gangue to make full use of the available materials in the gangue. The third step is to use the gangue powder to absorb the moisture in the sewage suction truck to form a mixture with appropriate humidity. The fourth step is to allow the raw materials to fully contact, which is conducive to the release of effective substances and the mutual promotion effect. The fifth step is to ensure that microorganisms ferment and decompose urban solid waste, excrete odors in sewage, decompose nitrogen, phosphorus, and potassium, and at the same time decompose metal elements in the gangue. The process is effective, consumes beneficial substances, and produces gases that damage the ecological environment. The sixth step is the effective time for full fermentation. The seventh step is to ensure that there are no plastics, ceramic fragments, cement and masonry fragments, metals, etc. in the soil conditioner that are not easy to degrade and affect soil quality in the future use of soil improvement.

[0028] 4. When in use, the soil conditioner is prepared from coal gangue under normal conditions, and the coal gangue is fully utilized, without any wastewater or waste residue discharge, which is beneficial to environmental protection. It uses coal gangue as raw material, urban organic solid waste as organic source, and human excrement in septic tank as nutrient source. Under the action of natural microbial fermentation, it is a new method for producing soil conditioner, which solves the legacy problems in the coal production process, increases the processing capacity of coal gangue, and at the same time eliminates urban domestic waste and completes the harmless treatment of human excrement in septic tanks. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a front perspective view of a device for preparing a coal gangue soil conditioner according to the present invention;

[0030] Figure 2 It is a bottom-up stereoscopic diagram of a device for preparing a coal gangue soil conditioner according to the present invention;

[0031] Figure 3 A side perspective view of a device for preparing a coal gangue soil conditioner according to the present invention;

[0032] Figure 4 It is a partially cutaway stereoscopic view of a mixing assembly of a device for preparing a coal gangue soil conditioner according to the present invention;

[0033] Figure 5 A partially cutaway stereoscopic view of an air screen assembly of a device for preparing a coal gangue soil conditioner according to the present invention;

[0034] Figure 6 This is a perspective view of the partial structure of the wind screen assembly of a device for preparing a coal gangue soil conditioner according to the present invention;

[0035] Figure 7 A side perspective view of a pulverizing component portion of a method for preparing a coal gangue soil conditioner according to the present invention;

[0036] Figure 8 The present invention is a top view of a pulverizing component of a method for preparing a coal gangue soil conditioner.

[0037] In the figure:

[0038] 1. Support assembly; 101. Operating table; 102. Support column; 103. Connecting rod; 104. Strengthening block; 2. Crushing assembly; 201. Fixing frame; 202. Ball mill barrel; 203. Feeding port; 204. Driven gear ring; 205. Double-axis gear; 206. Support frame; 207. Support frame; 208. Driving motor; 3. Mixing assembly; 301. Mixing tank; 302. Feeding port; 303. Sealing Closed cover; 304, servo motor; 305, I-shaft; 306, rotating rod; 307, stirring blade; 308, feeding pipe; 4, fermentation component; 401, fermentation tank; 402, constant temperature heating belt; 403, discharge pipe; 5, wind screen component; 501, wind screen chamber; 502, screen; 503, closing plate; 504, feeding port; 505, fan; 506, unloading slide plate; 6, unloading pipe; 7, valve. DETAILED DESCRIPTION

[0039] 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 implementation regulations 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 creative work are within the scope of protection of the present invention.

[0040] Example 1: Please refer to Figure 1 - Figure 8 The present invention provides a technical solution: a preparation device of a coal gangue soil conditioner, comprising a support component 1, the support component 1 comprises an operating table 101, a wind screen component 5 is arranged on the top of the operating table 101, a mixing component 3 and a fermentation component 4 are arranged on the outside of the operating table 101, and a mixing component 3 comprises a stirring tank 301, a feeding port 302 is fixedly connected to the top of the stirring tank 301, a top snap-fit ​​cover of the feeding port 302 is provided with a closing cover 303, a servo motor 304 is arranged on the top of the stirring tank 301 through a mounting plate, and an output shaft of the servo motor 304 is fixedly connected to an I-shaped shaft 305, the I-shaft 305 is rotatably embedded in the top of the stirring tank 301, the bottom of the I-shaft 305 is fixedly connected with a rotating rod 306, and the outer surface of the rotating rod 306 is fixedly connected with a plurality of stirring blades 307; the fermentation component 4 includes a fermentation tank 401, and the fermentation tank 401 is used to ferment the mixed materials, a constant temperature heating belt 402 is arranged outside the fermentation tank 401, and the constant temperature heating belt 402 is used to keep the internal temperature of the fermentation tank 401 constant, and the outer surface of the fermentation tank 401 is fixedly connected with a discharge pipe 403 near the bottom, and the discharge pipe 403 is used to discharge the fermented materials.

[0041] The bottom of the operating table 101 is fixedly connected to support columns 102 near the four corners, wherein two connecting rods 103 are fixedly connected between two supporting columns 102, and the outer surfaces of the two connecting rods 103 are fixedly connected to reinforcing blocks 104. The top of the operating table 101 is fixedly connected to a crushing assembly 2, and the crushing assembly 2 includes two fixed frames 201, and a ball mill barrel 202 is rotatably connected between the inner walls of the two fixed frames 201 through a bearing, and the outer surface of the ball mill barrel 202 is fixedly connected to a feed port 203, and the outer surface of the ball mill barrel 202 is fixedly sleeved with a driven gear ring 204. The top of the operating table 101 is fixedly connected to a support frame 207, and the top of the support frame 207 is fixedly connected to two support frames 206 near one side, and a double-axis gear 205 is rotatably connected between the two support frames 206. A drive motor 208 is arranged near the other side of the top of the support frame 207. The output shaft is fixedly connected to one end of the dual-axis gear 205, and the outer surface of the dual-axis gear 205 is meshed with the outer surface of the driven gear ring 204. The wind screen assembly 5 includes a wind screen chamber 501, a feed port 504 is provided at the top of the wind screen chamber 501, a closing plate 503 is provided on the front surface of the wind screen chamber 501, a screen 502 is fixedly installed on the inner wall of the wind screen chamber 501 near one side, a fan 505 is provided on the top of the operating table 101, and the output port of the fan 505 passes through the interior of the wind screen chamber 501, and a feeding slide plate 506 is fixedly connected to the inner wall of the wind screen chamber 501, a feeding pipe 6 is fixedly connected to the bottom of the stirring tank 301, and the top of the feeding pipe 6 is connected to the top input port of the fermentation tank 401 through a flange, and a valve 7 is provided on the outer surface of the feeding pipe 6, and a feeding pipe 308 is fixedly connected to the top of the stirring tank 301, and one end of the feeding pipe 308 is fixedly passed through the inside of one side of the wind screen chamber 501 near the screen 502.

[0042] The working principle of this embodiment is as follows: when in use, firstly, the gangue raw material is put into the ball mill barrel 202 from the feeding port 203, and then the feeding port 203 is covered, and the driving motor 208 is started to rotate its output shaft, thereby driving the double-axis gear 205 to rotate. The structure of the double-axis gear 205 is that the shaft is fixed at the center of both sides, so the two shafts rotate inside the two support frames 206. When the double-axis gear 205 rotates, it will engage and drive the driven gear ring 204 to rotate, so the ball mill barrel 2 02 is constantly rotating, grinding the internal gangue raw materials into powder. After the ground gangue is discharged from the feeding port 203, it is transported to the inside of the wind screen chamber 501. The crushed gangue is transported downward along the inclined feeding slide 506 to the area near the feeding pipe 308. By starting the fan 505, the airflow generated by it will blow the coal powder particles forward, pass through the screen 502 and enter the feeding pipe 308. The remaining materials can be taken out by opening the closing plate 503, thereby achieving separation. The separated coal powder particles enter The mixing tank 301 is filled with solid urban organic waste and excrement sucked out of the septic tank suction truck from the loading port 302, and then the sealing cover 303 is covered. At this time, the valve 7 is closed, and the servo motor 304 is started to drive the I-shaped shaft 305 and the rotating rod 306 to rotate. During the rotation, the stirring blade 307 continuously stirs and mixes the coal gangue powder, solid urban organic waste, and excrement sucked out of the septic tank suction truck. After mixing, the valve 7 is opened to keep the discharge pipe 6 unobstructed, and then the mixing continues. During the mixing process, the mixed material will enter the interior of the fermentation tank 401 through the discharge pipe 6. By energizing the constant temperature heating belt 402, its temperature is maintained at 40°C-55°C. After the discharge is completed, the valve 7 is closed to separate the discharge pipe 6 from the fermentation tank 401. After separation, the fermentation tank 401 is sealed, so that the material inside the fermentation tank 401 is fermented under constant temperature regulation. The fermented material is discharged through the discharge pipe 403, which can not only digest a large amount of coal gangue, but also avoid secondary ecological environment damage.

[0043] Embodiment 2: According to Figure 1 - Figure 8 As shown, a method for preparing a coal gangue soil conditioner comprises the following steps:

[0044] The first step is to crush the coal gangue to 100 mesh;

[0045] The second step is to separate the coal powder particles by air screening method;

[0046] The third step is to mix the gangue powder obtained in the second step, the solid urban organic waste, and the excrement sucked out by the septic tank suction truck in a ratio of 50:20:30;

[0047] Step 4: Stir and pile evenly;

[0048] Step 5: Cover and keep the temperature at 40℃-55℃;

[0049] Step 6: Keep the temperature in step 5 to ferment for 30-40 days;

[0050] Step 7: Remove the larger solids such as plastic, ceramic, cement, brick, metal fragments, etc. that have not been digested in the fermentation process from the fermented product in step 6 and granulate them into bulk to obtain high-quality soil conditioner;

[0051] The covering and maintaining temperature in the fifth step is to ensure that microorganisms ferment and decompose urban solid waste, excrete odors in the waste, decompose nitrogen, phosphorus and potassium, and effectively decompose the metal elements in the coal gangue. If the temperature is lower than 40°C, the fermentation time will be too long. If the temperature is higher than 55°C, the decomposition speed will be too fast, and methane and nitrogen will be produced at the same time. The number of days for maintaining fermentation in the sixth step is the effective time for sufficient fermentation.

[0052] Working principle of this embodiment: when in use, first, the processing of coal gangue is to crush the coal gangue to 100 meshes, which is not only conducive to the separation of coal in the coal gangue, but also conducive to the release of some metal elements in the fermentation process, and also conducive to the combination of soil conditioner and soil. After the crushed coal gangue is separated from the coal particles by air sieve, it is weighed and mixed with coal gangue powder, organic waste and pollutants from septic tanks in a ratio of 50:20:30 according to the amount of coal gangue powder separated from the coal particles. It is sealed and allowed to ferment naturally, and the humidity is maintained at 40°C to 55°C. If the temperature is too high, heat can be discharged. After more than 30 days, the fermentation can eliminate the odor of excrement and kill harmful pests and microorganisms. After the fermentation is completed, the plastics, ceramics, cement, masonry, metal fragments, etc. brought in by urban organic waste can be separated and inspected, and the soil conditioner product can be obtained by packaging or granulation packaging. 1 ton of coal gangue can produce 1.5 tons of soil conditioner containing more than 15% organic matter;

[0053] The specific steps are as follows:

[0054] Step 1: crush the gangue to 100 mesh, separate the coal particles from the gangue powder crushed to 100 mesh, weigh 1000 kg of the gangue powder from which the coal particles are separated, weigh 400 kg of urban solid organic waste, and weigh 600 kg of the paste-like waste in the septic tank sucked by a sewage suction truck, mix the three, and then ferment them in a closed manner. After 36 days, the odor of the fermented mixture disappears, the urban solid organic waste is fermented into humus, and plastics, ceramics, bricks, cement, metal fragments, etc. are removed, and 1520 kg of soil conditioner containing 15.3% organic matter is obtained;

[0055] Step 2: According to the above steps, weigh 2,000 kg of coal gangue powder from which coal particles have been separated, add 800 kg of urban solid organic waste, and weigh 1,200 kg of paste-like sewage in the septic tank sucked up by a sewage suction truck. Mix the three together and seal the mixture. After 38 days, the odor of the fermented mixture disappears, and the urban solid organic waste is fermented into humus. After removing plastics, ceramics, diamonds, cement, metal fragments, etc., 3,030 kg of soil conditioner containing 14.6% organic matter is obtained.

[0056] In the present invention, when in use, firstly, the gangue raw material is put into the ball mill barrel 202 from the feeding port 203, and then the feeding port 203 is covered, and the driving motor 208 is started to rotate its output shaft, thereby driving the double-axis gear 205 to rotate. The structure of the double-axis gear 205 is that shafts are fixed at the center of both sides, so the two shafts rotate inside the two support frames 206. When the double-axis gear 205 rotates, it will engage and drive the driven gear ring 204 to rotate. Then, the continuous rotation of the ball mill barrel 202 grinds the internal gangue raw material into powder. After the ground gangue is discharged from the feeding port 203, it is transported to the inside of the wind screen chamber 501, and the crushed gangue moves downward along the inclined discharge slide 506. The coal powder is transported to the area near the feed pipe 308, and the airflow generated by the fan 505 is blown forward through the screen 502 into the feed pipe 308. The remaining materials can be taken out by opening the closing plate 503, thereby achieving separation. The separated coal powder enters the interior of the mixing tank 301, and solid urban organic waste and excrement sucked out by the septic tank suction truck are added from the feeding port 302, and then the closing cover 303 is covered. At this time, the valve 7 is closed, and the servo motor 304 is started to drive the I-shaft 305 and the rotating rod 306 to rotate. During the rotation, the stirring blade 307 continuously stirs and mixes the coal gangue powder, solid urban organic waste, and excrement sucked out by the septic tank suction truck. After mixing, the valve 7 is opened to keep the discharge pipe 6 unobstructed. Then, in the process of continuing mixing, the mixed material will enter the interior of the fermentation tank 401 through the discharge pipe 6. By energizing the constant temperature heating belt 402, its temperature is maintained at 40°C-55°C. After the discharge is completed, the valve 7 is closed to separate the discharge pipe 6 from the fermentation tank 401. After separation, the fermentation tank 401 is sealed, so that the material inside the fermentation tank 401 is fermented under constant temperature regulation. The fermented material is discharged through the discharge pipe 403. When in use, first, the processing of coal gangue is to crush the coal gangue to 100 mesh, which is not only conducive to the separation of coal in the coal gangue, but also helps some metal elements in the fermentation process. The release of organic matter is also conducive to the combination of soil conditioner and soil. After the crushed coal gangue is separated from the coal particles by wind screen, it is weighed and mixed with coal gangue powder, organic waste and pollutants from septic tanks in a ratio of 50:20:30 according to the amount of coal gangue powder separated from the coal particles. It is sealed and allowed to ferment naturally, and the humidity is maintained at 40℃~55℃. If the temperature is too high, heat can be discharged. After more than 30 days, fermentation can eliminate the odor of excrement and kill harmful pests and microorganisms. After fermentation is completed, plastics, ceramics, cement, bricks, metal fragments, etc. brought in by urban organic waste can be separated and inspected, and the soil conditioner product can be obtained by packaging or granulation packaging. 1 ton of coal gangue can produce 1.5 tons of soil conditioner containing more than 15% organic matter.

[0057] The specific steps are as follows:

[0058] Step 1: crush the gangue to 100 mesh, separate the coal particles from the gangue powder crushed to 100 mesh, weigh 1000 kg of the gangue powder from which the coal particles are separated, weigh 400 kg of urban solid organic waste, and weigh 600 kg of the paste-like waste in the septic tank sucked by a sewage suction truck, mix the three, and then ferment them in a closed manner. After 36 days, the odor of the fermented mixture disappears, the urban solid organic waste is fermented into humus, and plastics, ceramics, bricks, cement, metal fragments, etc. are removed, and 1520 kg of soil conditioner containing 15.3% organic matter is obtained;

[0059] Step 2: According to the above steps, weigh 2,000 kg of coal gangue powder from which coal particles have been separated, add 800 kg of urban solid organic waste, and weigh 1,200 kg of paste-like sewage in the septic tank sucked up by a sewage suction truck. Mix the three together and seal the mixture. After 38 days, the odor of the fermented mixture disappears, and the urban solid organic waste is fermented into humus. After removing plastics, ceramics, diamonds, cement, metal fragments, etc., 3,030 kg of soil conditioner containing 14.6% organic matter is obtained.

[0060] The wiring diagram of the drive motor 208, servo motor 304, constant temperature heating belt 402 and fan 505 in the present invention is common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the drive motor 208, servo motor 304, constant temperature heating belt 402 and fan 505 will not be explained in detail.

[0061] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for preparing a coal gangue soil conditioner, comprising a support assembly (1), wherein the support assembly (1) comprises an operating table (101), a wind screen assembly (5) is arranged on the top of the operating table (101), and a mixing assembly (3) and a fermentation assembly (4) are arranged on the outside of the operating table (101), characterized in that: The mixing assembly (3) comprises a stirring tank (301), the top of the stirring tank (301) is fixedly connected to a feeding port (302), the top snap-fit ​​cover of the feeding port (302) is provided with a closing cover (303), a servo motor (304) is arranged on the top of the stirring tank (301) through a mounting plate, the output shaft of the servo motor (304) is fixedly connected to an I-shaped shaft (305), the I-shaped shaft (305) is rotatably embedded in the top of the stirring tank (301), the bottom of the I-shaped shaft (305) is fixedly connected to a rotating rod (306), and the outer surface of the rotating rod (306) is fixedly connected to a plurality of stirring blades (307); The fermentation assembly (4) includes a fermentation tank (401), and the fermentation tank (401) is used to ferment the mixed material. A constant temperature heating belt (402) is arranged outside the fermentation tank (401), and the constant temperature heating belt (402) is used to keep the internal temperature of the fermentation tank (401) constant. A discharge pipe (403) is fixedly connected to the outer surface of the fermentation tank (401) near the bottom, and the discharge pipe (403) is used to discharge the fermented material.

2. The preparation device of the coal gangue soil conditioner according to claim 1, characterized in that: The bottom of the operating table (101) is fixedly connected to support columns (102) near the four corners, wherein two connecting rods (103) are fixedly connected between two of the supporting columns (102), and the outer surfaces of the two connecting rods (103) are fixedly connected to reinforcing blocks (104).

3. The preparation device of the coal gangue soil conditioner according to claim 2, characterized in that: A crushing assembly (2) is fixedly connected to the top of the operating table (101), and the crushing assembly (2) comprises two fixed frames (201), a ball mill barrel (202) is rotatably connected between the inner walls of the two fixed frames (201) via a bearing, the outer surface of the ball mill barrel (202) is fixedly connected to a feed port (203), and the outer surface of the ball mill barrel (202) is fixedly sleeved with a driven gear ring (204).

4. The preparation device of the coal gangue soil conditioner according to claim 3, characterized in that: A support bracket (207) is fixedly connected to the top of the operating table (101), two support brackets (206) are fixedly connected to the top of the support bracket (207) near one side, a double-axis gear (205) is rotatably connected between the two support brackets (206), a driving motor (208) is arranged near the other side of the top of the support bracket (207), an output shaft of the driving motor (208) is fixedly connected to one end of the double-axis gear (205), and an outer surface of the double-axis gear (205) is meshingly connected to an outer surface of a driven gear ring (204).

5. The preparation device of the coal gangue soil conditioner according to claim 4, characterized in that: The wind screen assembly (5) comprises a wind screen chamber (501), a feed port (504) is provided on the top of the wind screen chamber (501), a closing plate (503) is provided on the front surface of the wind screen chamber (501), and a screen (502) is fixedly installed on one side of the inner wall of the wind screen chamber (501).

6. The preparation device of the coal gangue soil conditioner according to claim 5, characterized in that: A fan (505) is arranged on the top of the operating table (101), and the output port of the fan (505) penetrates into the interior of the wind screening chamber (501), and a material discharge slide plate (506) is fixedly connected to the inner wall of the wind screening chamber (501).

7. The preparation device of the coal gangue soil conditioner according to claim 6, characterized in that: The bottom of the stirring tank (301) is fixedly connected to a feed pipe (6), the top of the feed pipe (6) is connected to the top input port of the fermentation tank (401) via a flange, a valve (7) is provided on the outer surface of the feed pipe (6), the top of the stirring tank (301) is fixedly connected to a feed pipe (308), one end of the feed pipe (308) is fixedly passed through the inside of a side of the wind screen chamber (501) close to the screen (502).

8. A method for preparing a coal gangue soil conditioner, characterized in that: The steps include: The first step is to crush the coal gangue to 100 mesh; The second step is to separate the coal powder particles by air screening method; The third step is to mix the gangue powder obtained in the second step, the solid urban organic waste, and the excrement sucked out by the septic tank suction truck in a ratio of 50:20:30; Step 4: Stir and pile evenly; Step 5: Cover and keep the temperature at 40℃-55℃; Step 6: Keep the temperature in step 5 to ferment for 30-40 days; The seventh step is to remove the solids of plastic, ceramic, cement, brick, stone and metal fragments that have not been digested during the fermentation process from the fermentation product of the sixth step and granulate them into bulk to obtain high-quality soil conditioner.

9. The method for preparing the coal gangue soil conditioner according to claim 8, characterized in that: The covering and maintaining temperature in the fifth step is to ensure that the microorganisms ferment and decompose the urban solid waste, excrete the odor in the waste, decompose nitrogen, phosphorus and potassium, and decompose the metal elements in the coal gangue effectively. If the temperature is lower than 40°C, the fermentation time will be too long. If the temperature is higher than 55°C, the decomposition speed will be too fast, and methane and nitrogen will be produced at the same time.

10. The method for preparing the coal gangue soil conditioner according to claim 9, characterized in that: The fermentation time in step 6 is the effective time for full fermentation.

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