Preparation method and preparation device of phosphogypsum modifier

Abstract

The invention relates to the technical field of ardealite modifier preparation, in particular to a preparation method and a preparation device of an ardealite modifier. Comprising fly ash, calcium oxide, calcium hydroxide, sodium hydroxide, calcium chloride and polyaluminum chloride. The cement grinding aid is prepared from 20%-40% of fly ash, 30%-50% of calcium oxide, 20%-35% of calcium hydroxide, 0.01%-0.03% of sodium hydroxide, 0.01%-0.04% of calcium chloride and 0.01%-0.04% of polyaluminum chloride. In order to solve the problem that lime and cement in a traditional phosphogypsum modifier consume a large amount of energy and release carbon dioxide due to high-temperature treatment in the preparation process, fly ash is innovatively adopted as a substitute material and is a by-product of a coal-fired power plant, and by means of the fly ash, the stockpiling problem of industrial waste residues can be solved, and the utilization rate of the fly ash is increased. The pollution to the environment can be effectively reduced, and the win-win situation of resource recycling and environmental protection is realized.

Description

Technical Field

[0001] The invention relates to the technical field of phosphogypsum modifier preparation, and in particular to a phosphogypsum modifier preparation method and a preparation device thereof. Background Art

[0002] As an industrial byproduct, phosphogypsum has broad application prospects in fields such as land improvement. However, due to its high content of calcium sulfate dihydrate and more impurities, direct use will encounter many challenges. In order to overcome these problems and improve its performance, phosphogypsum is usually modified to improve the physical and chemical properties of the soil: by modifying phosphogypsum, the calcium ions in the phosphogypsum can replace harmful cations in the soil, improve the soil aggregate structure, increase air permeability and water permeability, promote plant root growth, improve soil fertility, and create favorable conditions for vegetation restoration; at the same time, the modified phosphogypsum also has better stability and durability, and enhances the soil's ability to resist erosion.

[0003] Currently, commonly used phosphogypsum modifiers mainly include lime, cement and other materials. These additives are combined with phosphogypsum through physical mixing or chemical reaction to improve its physical properties and chemical stability. For example, adding an appropriate amount of lime can neutralize the acidic components in phosphogypsum, while cement helps to enhance its structural strength. However, cement production requires high-temperature calcination of limestone, which releases a large amount of carbon dioxide. The production of lime also requires high-temperature calcination of calcium carbonate, which not only consumes a lot of energy but also pollutes the environment. Summary of the invention

[0004] In order to overcome the problems mentioned in the above background, the present invention provides a method for preparing a phosphogypsum modifier and a preparation device thereof.

[0005] The technical solution of the present invention is: a method for preparing a phosphogypsum modifier, characterized in that it comprises the following preparation formula:

[0006] Fly ash, calcium oxide, calcium hydroxide, sodium hydroxide, calcium chloride, polyaluminium chloride;

[0007] The proportion is 20% to 40% fly ash, 30% to 50% calcium oxide, 20% to 35% calcium hydroxide, 0.01% to 0.03% sodium hydroxide, 0.01% to 0.04% calcium chloride, and 0.01% to 0.04% polyaluminium chloride;

[0008] The preparation method adopted in the above preparation formula is:

[0009] Fly ash, calcium oxide, calcium hydroxide, sodium hydroxide, calcium chloride and polyaluminium chloride are put into a stirring device, and the stirring device is used to stir and mix the former so that the former can be fully and evenly mixed.

[0010] A preparation device for a phosphogypsum modifier, comprising:

[0011] chassis;

[0012] A driving member, disposed on one side of the base frame;

[0013] A stirring tank is fixedly connected to the other side of the base frame, and the stirring tank is rotatably connected to a connecting block that is transmission-connected to the driving member;

[0014] A rotating drum, rotatably connected to the mixing tank, the rotating drum is fixedly connected with a resistance plate, the rotating drum is provided with a circular and linear array of slide grooves, a sliding seat is slidably connected in the slide groove, a first spring fixedly connected to the sliding seat is provided in the slide groove, the lengths of the slide grooves in the circular and linear array are different, the sliding seat is fixedly connected with a swing shell, the swing shell is rotatably connected with a rotating shell on a side away from the adjacent sliding seat, the rotating drum is rotatably connected with a sealing shell with the same number of the slide grooves in the linear array, and the sealing shell is fixedly connected to the adjacent and circular array swing shells;

[0015] A connecting assembly is arranged on the rotating drum and is used for connecting the connecting block and the rotating drum.

[0016] Preferably, the connection assembly comprises:

[0017] A rotating disk, rotatably connected to a side of the rotating drum close to the driving member, the rotating disk is fixedly connected to the connecting block, the sliding seat close to the rotating disk is fixedly connected with a connecting column, and the connecting column is fixedly connected to the rotating disk;

[0018] The limiting frames in an annular and linear array are respectively fixed to the adjacent sliding seats, and the limiting frames are used to drive the adjacent and non-fixed sliding seats to move in different ways.

[0019] Preferably, the swing shell is fixedly connected with a fixed baffle, the projection of the fixed baffle on the adjacent side of the adjacent swing shell is V-shaped, and the V-shaped tip of the swing shell faces the adjacent rotating shell.

[0020] Preferably, the cross-section of the fixed baffle is trapezoidal, which is used to guide the powdered material on the fixed baffle.

[0021] Preferably, an L-shaped block is fixedly connected to the side of the rotating shell facing the adjacent fixed baffle, and the L-shaped block is rotatably connected to an L-shaped swing plate in contact with the adjacent swing shell, a torsion spring is arranged between the L-shaped block and the L-shaped swing plate, and a driving assembly is arranged in the sliding seat, and the driving assembly is used to make the adjacent rotating shell swing.

[0022] Preferably, the driving assembly comprises:

[0023] A first hydraulic telescopic rod, fixedly connected to the sliding seat, wherein a telescopic portion of the first hydraulic telescopic rod is in contact with the rotating drum;

[0024] a second hydraulic telescopic rod, hinged between the rotating shell and the adjacent swinging shell, the swinging shell being fixedly connected with a connecting pipe, the second hydraulic telescopic rod being connected to the first hydraulic telescopic rod through the connecting pipe, and the connecting position of the connecting pipe and the first hydraulic telescopic rod is not located in the middle thereof;

[0025] The extrusion assembly is arranged in the rotating shell and is used for extruding the surrounding powdery materials.

[0026] Preferably, the extrusion assembly comprises:

[0027] An elastic liquid bag, fixedly connected to the rotating shell;

[0028] The spaced-apart limiting shells are all fixedly connected to the elastic liquid bag, and the limiting shells are rotatably connected to a sliding knife which is slidably connected to the rotating shell.

[0029] Preferably, it also includes:

[0030] An adjusting component is disposed in the stirring tank and is used to adjust the expansion degree of all the elastic liquid sacs. The adjusting component includes:

[0031] A fixing frame, fixedly connected to a side of the mixing tank away from the driving member;

[0032] A fixed rod is fixedly connected to the fixed frame, the fixed rod is fixedly provided with a first limiting ring of a linear array and a second limiting ring of a linear array, limiting grooves are arranged in the first limiting ring and the second limiting ring, the sliding seat is fixedly connected with two third hydraulic telescopic rods, and the two third hydraulic telescopic rods are connected by a first liquid passing pipe. When the side of the sliding seat close to the first spring is in contact with the rotating cylinder, the telescopic part of the third hydraulic telescopic rod close to the swing shell contacts the rotating cylinder, the swing shell is slidably connected with a fourth hydraulic telescopic rod, a second spring is fixedly connected between the fourth hydraulic telescopic rod and the swing shell, the telescopic part of the fourth hydraulic telescopic rod is slidably connected with the telescopic part of the adjacent third hydraulic telescopic rod, and a fixing pin is fixedly connected to the side of the fourth hydraulic telescopic rod close to the adjacent third hydraulic telescopic rod, and the limiting grooves in the first limiting ring and the second limiting ring are both used to guide the fixing pin of the fourth hydraulic telescopic rod.

[0033] Preferably, the distance between the first limiting ring and the second limiting ring is greater than the length of the fixing pin on the fourth hydraulic telescopic rod, and the side of the fourth hydraulic telescopic rod away from the adjacent sliding seat is connected to the elastic liquid bag through a second liquid passage pipe that penetrates the adjacent rotating shell, the limiting groove of the first limiting ring is annular, and the limiting groove of the second limiting ring consists of an arc-shaped portion and a wavy portion, the wavy portion in the second limiting ring is located at the upper part, and a scraper is fixedly connected to the side of the rotating shell away from the adjacent swinging shell.

[0034] The beneficial effects of the present invention are as follows: in view of the problem that lime and cement in the traditional phosphogypsum modifier consume a lot of energy and release carbon dioxide during the preparation process due to the need for high-temperature treatment, the present invention innovatively uses fly ash as a substitute material. Fly ash is a by-product of coal-fired power plants. Its use can not only reduce the storage problem of industrial waste residues, but also effectively reduce environmental pollution, thereby achieving a win-win situation of resource recycling and environmental protection;

[0035] The present invention aims to solve the problem that when an existing stirring device processes agglomerated powdered materials, the agglomerated powdered materials cannot be uniformly mixed with other powdered materials, thereby affecting the product quality. To this end, the present invention adopts a method of changing the stirring part so that after the stirring part stirs for a period of time, the stirring rods in the stirring part are changed from an unevenly distributed state to a linearly arranged state, and then the linearly arranged stirring rods squeeze the powdered materials in the agglomerate to flatten the agglomerate, increase the surface area of ​​the agglomerate, and reduce the thickness of the agglomerate, so that the flattened agglomerate is easier to be broken up and dispersed into small particles, shortening the overall stirring time while reducing the additional cost and equipment wear caused by extending the stirring time;

[0036] After the powdered materials in agglomerates are extruded, forced separation is used to further reduce the size of the agglomerated powdered materials, thereby improving the dispersion and uniformity of the powdered materials, dispersing the powdered materials in the flattened state into finer particles, ensuring that the large agglomerates inside the powdered materials are completely broken up, and promoting uniform mixing of the powdered materials with other powdered materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0038] Figure 2 It is a three-dimensional structural cross-sectional view of the stirring tank of the present invention;

[0039] Figure 3 A top view of the three-dimensional structure of the driving member of the present invention;

[0040] Figure 4 It is a three-dimensional structural cross-sectional view of the connecting block of the present invention;

[0041] Figure 5 It is a three-dimensional structural schematic diagram of the distribution of the sliding seat and the swing shell of the present invention;

[0042] Figure 6 It is a three-dimensional structural schematic diagram of the distribution of the limit frame of the present invention;

[0043] Figure 7 It is a three-dimensional structural cross-sectional view of the rotary drum of the present invention;

[0044] Figure 8 It is a three-dimensional structural cross-sectional view of the swing shell of the present invention;

[0045] Fig. 9 It is a three-dimensional structural cross-sectional view of the sliding seat of the present invention;

[0046] Fig.10 It is a schematic diagram of the three-dimensional structure of the first limiting ring of the present invention;

[0047] Fig.11 It is a three-dimensional structural cross-sectional view of the rotating shell of the present invention;

[0048] Fig.12 It is a three-dimensional structural schematic diagram of the connection relationship between the limiting shell and the sliding knife of the present invention.

[0049] Explanation of the accompanying drawings: 10-base frame, 11-driving member, 12-mixing tank, 13-connecting block, 14-rotating drum, 15-chute, 16-sliding seat, 17-swinging shell, 18-rotating shell, 19-sealing shell, 20-rotating disk, 21-connecting column, 22-limiting frame, 30-fixed baffle, 40-L-shaped block, 41-L-shaped swing plate, 50-first hydraulic telescopic rod, 51-second hydraulic telescopic rod, 52-connecting pipe, 60-elastic liquid bag, 61-limiting shell, 62-sliding knife, 70-fixed frame, 71-fixed rod, 72-first limiting ring, 73-second limiting ring, 74-third hydraulic telescopic rod, 75-fourth hydraulic telescopic rod. DETAILED DESCRIPTION

[0050] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0051] In order to solve the high energy consumption and carbon dioxide emission problems caused by high temperature treatment during the production of traditional phosphogypsum modifiers (such as lime and cement), the present invention proposes to use fly ash as an alternative material. Fly ash is a byproduct produced by coal-fired power plants. Using it can not only reduce the accumulation of industrial waste residues, but also significantly reduce environmental pollution, thereby achieving the dual benefits of effective recycling of resources and environmental protection.

[0052] A method for preparing a phosphogypsum modifier is characterized in that it includes the following preparation formula: mainly using fly ash, calcium oxide, calcium hydroxide, sodium hydroxide, calcium chloride, and polyaluminium chloride; the proportion of fly ash is 20% to 40%, calcium oxide is 30% to 50%, calcium hydroxide is 20% to 35%, sodium hydroxide is 0.01% to 0.03%, calcium chloride is 0.01% to 0.04%, and polyaluminium chloride is 0.01% to 0.04%. The fly ash, calcium oxide, calcium hydroxide, sodium hydroxide, calcium chloride, and polyaluminium chloride are placed in a stirring device, and the stirring device is used to stir and mix the former so that the former can be fully mixed and uniform.

[0053] The best ratio is 33% fly ash, 40% calcium oxide, 26% calcium hydroxide, 0.01% sodium hydroxide, 0.02% calcium chloride and 0.02% polyaluminium chloride.

[0054] At present, one of the methods for preparing phosphogypsum modifiers is to use a stirring device to mechanically mix various powdered materials. Specifically, in the actual production process, various powdered materials in predetermined proportions are added to a stirring tank one by one, and the various powdered materials are stirred by stirring blades in the stirring tank to promote the mixing of the powdered materials. However, when the storage environment of the powdered materials is humid, the fly ash will be affected by the humidity and clump, and the clumped powdered materials cannot be evenly mixed with other powdered materials. In the long run, the quality of the final product will be affected. However, the existing solution is to extend the stirring time, which will increase the production cycle, and excessive stirring will also increase equipment wear and energy consumption costs, thereby affecting the quality of products using the material as raw materials.

[0055] The present invention aims to solve the problem of uneven mixing of existing stirring devices when processing agglomerated powder materials. To this end, the present invention changes the design of the stirring part. During the stirring process, the stirring rods will change from an unevenly distributed state to a straight line arrangement, squeezing the agglomerates to make them flat and increase the surface area and reduce the thickness. In this way, the agglomerates can be more easily broken up into small particles, shortening the stirring time, reducing additional costs and equipment wear, as detailed below; the small particles can increase the efficiency of full mixing with other powder materials.

[0056] A device for preparing a phosphogypsum modifier, such as Figure 1-Figure 7As shown, it includes: a base frame 10; a driving member 11, which is arranged on one side of the base frame 10; a stirring tank 12, which is fixedly connected to the other side of the base frame 10, and the stirring tank 12 is rotatably connected to a connecting block 13 that is transmission-connected to the driving member 11; a rotating drum 14, which is rotatably connected to the stirring tank 12, and the rotating drum 14 is fixedly connected to a resistance plate, and the rotating drum 14 is provided with a circular and linear array of slide grooves 15, and a sliding seat 16 is slidably connected in the slide groove 15, and a first spring fixed to the sliding seat 16 is provided in the slide groove 15, and the lengths of the circular and linear array slide grooves 15 are different, and the sliding seat 16 is fixedly connected to a swing shell 17, and the side of the swing shell 17 away from the adjacent sliding seat 16 is rotatably connected to a rotating shell 18, and the rotating drum 14 is rotatably connected to a sealing shell 19 with the same number of the linear array slide grooves 15, and the sealing shell 19 is fixedly connected to the adjacent and circular array swing shells 17; a connecting component is arranged on the rotating drum 14, and is used to connect the connecting block 13 and the rotating drum 14.

[0057] In the above scheme, the driving member 11 is composed of a driving motor and a reducer, the driving shaft of the driving motor is fixedly connected to the input shaft of the reducer, the output shaft of the reducer is fixedly connected to the connecting block 13, the resistance plate is used to stir the powdered material around the rotating drum 14, and the number of the annular array chute 15 and the sliding seat 16 in the present invention are both two, which are used to ensure the balance of the rotating drum 14 during the rotation process. The quantitative words here are only used to describe the present invention, and do not limit the exact number. The sliding seat 16 is composed of guide pins and arc plates that are fixedly connected to each other. The number of the annular array chute 15 and the sliding seat 16 can be adjusted according to actual conditions. Figure 4 For example, the edge lines of the right sides of all the chutes 15 on the same side of the upper left part are collinear, and the line is collinear with the axis of the drum 14, the edge lines of the left sides of all the chutes 15 on the same side of the upper left part are not collinear, and the edge lines of the left sides of all the chutes 15 on the same side of the upper left part are parallel to the axis of the drum 14, and the length of the linear array chutes 15 is gradually shortened from the side close to the connecting block 13 to the side away from the connecting block 13, so that all the sliding seats 16 on the same side can be distributed in a spiral. The spiral distribution mentioned here is in the state where the drum 14 rotates counterclockwise. When the drum 14 rotates clockwise, all the sliding seats 16 on the same side are arranged in a straight line, and at this time the straight line formed by the sliding seats 16 is parallel to the axis of the drum 14, and a blind hole is provided in the arc plate of the sliding seat 16, and the blind hole in the arc plate of the sliding seat 16 is used to retract the first spring therein, and when all the rotating shells 18 on the same side are distributed in a spiral, the angle between the swinging shell 17 and the rotating shell 18 is less than 90°, and when all the rotating shells 18 on the same side are distributed in a straight line, the angle between the swinging shell 17 and the rotating shell 18 is greater than 90°.

[0058] like Figure 4-Figure 8As shown, the connection assembly includes: a rotating disk 20, which is rotatably connected to the side of the rotating drum 14 close to the driving member 11, the rotating disk 20 is fixedly connected to the connecting block 13, the sliding seat 16 close to the rotating disk 20 is fixedly connected with a connecting column 21, and the connecting column 21 is fixedly connected to the rotating disk 20; a ring-shaped and linear array of limit frames 22, which are respectively fixed to adjacent sliding seats 16, and the limit frames 22 are used to drive adjacent and non-fixed sliding seats 16 to move in different ways.

[0059] In the above scheme, the limiting frame 22 is composed of a rectangular plate and an L-shaped frame. When all the sliding seats 16 on the same side are distributed in a spiral, the L-shaped frame in the limiting frame 22 contacts the adjacent sliding seats 16. When all the sliding seats 16 on the same side are arranged in a straight line, the rectangular plate in the limiting frame 22 contacts the adjacent sliding seats 16.

[0060] like Figure 6 , Figure 7 and Fig.11 As shown, the swing shell 17 is fixedly connected to a fixed baffle 30, and the projection of the fixed baffle 30 on the adjacent side of the adjacent swing shell 17 is V-shaped, and the V-shaped tip of the swing shell 17 faces the adjacent rotating shell 18. The cross-section of the fixed baffle 30 is trapezoidal, which is used to guide the powdered material on the fixed baffle 30.

[0061] In the above scheme, the fixed baffle 30 is used to intercept part of the powdered material. When the fixed baffle 30 is located on the upper side of the drum 14, the V-shaped tip of the swing shell 17 faces upward to guide the powdered material on the upper side of the swing shell 17.

[0062] like Fig.11 and Fig.12 As shown, an L-shaped block 40 is fixedly connected to the side of the rotating shell 18 facing the adjacent fixed baffle 30, and the L-shaped block 40 is rotatably connected to an L-shaped swing plate 41 in contact with the adjacent swing shell 17. A torsion spring is arranged between the L-shaped block 40 and the L-shaped swing plate 41, and a driving assembly is arranged in the sliding seat 16, and the driving assembly is used to make the adjacent rotating shell 18 swing.

[0063] In the above scheme, when the L-shaped swing plate 41 contacts the adjacent swing shell 17 and is completely immersed in the powdered material, the powdered material enters between the swing shell 17, the rotating shell 18 and the L-shaped swing plate 41. When the swing shell 17 and the rotating shell 18 swing to the upper side of the drum 14, the material between the swing shell 17, the rotating shell 18 and the L-shaped swing plate 41 breaks through the restriction of the adjacent torsion spring of the L-shaped swing plate 41, and then slides down along the swing shell 17, thereby achieving the effect of transferring the powdered material into the air and making it fall freely, increasing the relative movement and collision opportunities between particles.

[0064] like Figure 8 , Fig. 9 , Fig.11 and Fig.12As shown, the driving assembly includes: a first hydraulic telescopic rod 50, which is fixed to the sliding seat 16, and the telescopic part of the first hydraulic telescopic rod 50 is in contact with the rotating drum 14; a second hydraulic telescopic rod 51, which is hinged between the rotating shell 18 and the adjacent swinging shell 17, and the swinging shell 17 is fixed with a connecting pipe 52, and the second hydraulic telescopic rod 51 is connected to the first hydraulic telescopic rod 50 through the connecting pipe 52, and the connecting position of the connecting pipe 52 and the first hydraulic telescopic rod 50 is not located in the middle; an extrusion assembly, which is arranged in the rotating shell 18, and is used to extrude the surrounding powdered materials, and the extrusion assembly includes: an elastic liquid capsule 60, which is fixed in the rotating shell 18; and spaced limiting shells 61, which are all fixed to the elastic liquid capsule 60, and the limiting shells 61 are rotatably connected to a sliding knife 62 that is slidably connected to the rotating shell 18.

[0065] In the above scheme, the first hydraulic telescopic rod 50 is composed of a liquid storage shell, a sliding column and a sliding plate. The liquid storage shell in the first hydraulic telescopic rod 50 is fixedly connected to the adjacent sliding seat 16. The sliding column of the first hydraulic telescopic rod 50 passes through the sliding plate and the liquid storage shell (that is, the first hydraulic telescopic rod 50 is a bidirectional hydraulic telescopic rod). The sliding plate of the first hydraulic telescopic rod 50 is located at the upper part of the sliding column. The communication position between the first hydraulic telescopic rod 50 and the connecting pipe 52 is located below the sliding plate in the first hydraulic telescopic rod 50. When all the rotating shells 18 on the same side are spirally distributed, the lower side of the sliding column in the first hydraulic telescopic rod 50 is in contact with the rotating drum 14, and the liquid storage shell of the first hydraulic telescopic rod 50 is filled with hydraulic oil.

[0066] like Figure 1 , Figure 3 and Figure 7-10As shown, it also includes: an adjustment component, which is arranged in the mixing tank 12 and is used to adjust the expansion degree of all elastic liquid bags 60. The adjustment component includes: a fixed frame 70, which is fixedly connected to the side of the mixing tank 12 away from the driving member 11; a fixed rod 71, which is fixedly connected to the fixed frame 70, and the fixed rod 71 is fixedly connected with a first limiting ring 72 of a linear array and a second limiting ring 73 of a linear array, and limiting grooves are provided in the first limiting ring 72 and the second limiting ring 73. The sliding seat 16 is fixedly connected with two third hydraulic telescopic rods 74, and the two third hydraulic telescopic rods 74 are connected by a first liquid-passing pipe. When the side of the sliding seat 16 close to the first spring is in contact with the rotating drum 14, the telescopic part of the third hydraulic telescopic rod 74 close to the swing shell 17 contacts the rotating drum 14, and the swing shell 17 is slidably connected with a fourth hydraulic telescopic rod 75, and a second spring is fixedly connected between the fourth hydraulic telescopic rod 75 and the swing shell 17, and the telescopic part of the fourth hydraulic telescopic rod 75 The fourth hydraulic telescopic rod 75 is slidably connected to the telescopic part of the adjacent third hydraulic telescopic rod 74, and a fixing pin is fixedly connected to the side of the fourth hydraulic telescopic rod 75 close to the adjacent third hydraulic telescopic rod 74. The limiting grooves in the first limiting ring 72 and the second limiting ring 73 are both used to guide the fixing pin of the fourth hydraulic telescopic rod 75. The limiting grooves in the first limiting ring 72 and the second limiting ring 73 are both used to guide the fixing pin of the fourth hydraulic telescopic rod 75. The distance between the first limiting ring 72 and the second limiting ring 73 is greater than the length of the fixing pin on the fourth hydraulic telescopic rod 75. The side of the fourth hydraulic telescopic rod 75 away from the adjacent sliding seat 16 is connected to the elastic liquid capsule 60 through a second liquid passage that runs through the adjacent rotating shell 18. The limiting groove of the first limiting ring 72 is annular, and the limiting groove of the second limiting ring 73 is composed of an arc-shaped portion and a wavy portion. The wavy portion of the second limiting ring 73 is located at the upper part, and a scraper is fixedly connected to the side of the rotating shell 18 away from the adjacent swinging shell 17.

[0067] In the above scheme, when the fixing pin of the fourth hydraulic telescopic rod 75 slides along the limiting groove of the first limiting ring 72, all the rotating shells 18 on the same side are distributed in a spiral manner, and when the fixing pin of the fourth hydraulic telescopic rod 75 slides along the limiting groove of the second limiting ring 73, all the rotating shells 18 on the same side are distributed in a straight line. When the fixing pin of the fourth hydraulic telescopic rod 75 slides along the wavy portion in the limiting groove of the second limiting ring 73, the fixing pin of the fourth hydraulic telescopic rod 75 drives its telescopic portion to move back and forth, thereby achieving the effect of controlling the expansion degree of the elastic liquid bag 60. The telescopic portion of the third hydraulic telescopic rod 74 close to the fixed rod 71 is fixedly connected to a limiting ring slidably connected to the telescopic portion of the fourth hydraulic telescopic rod 75. One of the two third hydraulic telescopic rods 74 is located in the guide pin of the sliding seat 16 and is fixed thereto, and the other third hydraulic telescopic rod is located in the arc plate of the sliding seat 16 and is fixed thereto.

[0068] Before stirring the modifier of phosphogypsum, the user first puts different powdered materials into the stirring tank 12. After the volume of the different powdered materials meets the required volume for the work, the user closes the cover on the stirring tank 12 and seals the upper side of the stirring tank 12, thereby completing the preparation actions before stirring the phosphogypsum modifier.

[0069] After the preparation for stirring the phosphogypsum modifier is completed, the user starts the driving member 11, and the driving member 11 drives the connecting block 13 to rotate counterclockwise along the stirring tank 12 (counterclockwise from right to left), and the connecting block 13 drives the rotating disk 20 and the two connecting columns 21 to rotate counterclockwise, and the two connecting columns 21 then drive the adjacent sliding seats 16 to rotate (counterclockwise from right to left). Figure 7 Taking the left and right sliding seats 16 as an example, the lower side of the left sliding seat 16 is in contact with the rotating drum 14, and the upper side of the right sliding seat 16 is in contact with the rotating drum 14, so all the sliding seats 16 and all the swing shells 17 on the same side are now distributed in a spiral manner. Figure 8 For example, the lower side of the telescopic portion of the first hydraulic telescopic rod 50 is in contact with the rotating drum 14, and the lower side of the telescopic portion of the first hydraulic telescopic rod 50 is squeezed), and the two sliding seats 16 on the right side drive the sliding seat 16 on the left side to rotate synchronously through the limiting frame 22 thereon (at this time, the L-shaped plate in the limiting frame 22 is in contact with the adjacent sliding seat 16), and the subsequent sliding seat 16 drives the adjacent sliding seats 16 to move in turn through the limiting frame 22. Through the power transmission of the above-mentioned parts, all the sliding seats 16 drive the rotating drum 14 and all the swinging shells 17 and rotating shells 18 to rotate in the mixing tank 12.

[0070] During the rotation of all the swinging shells 17 and the rotating shells 18, the fixing pins on all the fourth hydraulic telescopic rods 75 slide along the limiting grooves in the adjacent first limiting rings 72 respectively, and all the swinging shells 17 and the rotating shells 18 stir the powdered materials in the rotating drum 14 during the rotation of the rotating drum 14, so as to achieve the mixing of the powdered materials. Taking the rotation process of one of the swinging shells 17 as an example, the swinging shell 17 and the adjacent rotating shell 18 and the fixed baffle 30 intercept a part of the powdered materials during the rotation (when the swinging shell 17 is immersed in the powdered materials, the powdered materials enter between the swinging shell 17, the rotating shell 18 and the L-shaped swinging plate 41), so that the powdered materials can be brought to the upper part of the mixing tank 12 by the swinging shell 17 and the rotating shell 18.

[0071] When part of the powdered material in the drum 14 is brought to the upper part of the mixing tank 12 by the swinging shell 17 and the rotating shell 18, the powdered material on the fixed baffle 30 slides downward due to its trapezoidal cross-section, so that the powdered material can fall freely in the air, increasing the relative movement and collision opportunities between particles, thereby enhancing the mixing degree of the powdered material and improving the overall uniformity of the powdered material.

[0072] After the powdered material intercepted by the L-shaped swing plate 41 rotates to the upper part of the drum 14 by the swing shell 17 and the rotating shell 18, the weight of the powdered material in the L-shaped swing plate 41 and itself is greater than the supporting force provided by its adjacent torsion spring (after the weight of the powdered material in the L-shaped swing plate 41 and itself is less than the supporting force provided by its adjacent torsion spring, the L-shaped swing plate 41 returns to its original position and rotates), so that the L-shaped swing plate 41 can break away from the contact with the adjacent swing shell 17, so that the powdered material between the L-shaped swing plate 41 and the swing shell 17 can slide downward along the swing shell 17, and after the powdered material sliding downward along the swing shell 17 contacts the adjacent fixed baffle 30, the fixed baffle 30 blocks the powdered material from falling, so that the powdered material can diffuse to the surroundings during the process of falling downward, thereby further increasing the mixing degree of the powdered material.

[0073] After the powdered material in the mixing tank 12 is stirred for a period of time, the driving member 11 drives the connecting block 13 to rotate in the reverse direction, so that the connecting block 13 drives the adjacent sliding seats 16 to slide along the adjacent sliding grooves 15 through the rotating disk 20 and the two connecting columns 21 (the adjacent first springs are squeezed during the sliding of the sliding seats 16. In this process, the resistance plate on the rotating drum 14 increases the resistance between the rotating drum 14 and the powdered material, so the rotating drum 14 stops rotating or the rotation speed is reduced). During the sliding process of the sliding seat 16, the adjacent sliding seat 16 is driven to rotate synchronously through the adjacent limiting frame 22. At this time, the L-shaped frame in the limiting frame 22 does not contact the adjacent sliding seat 16, and the rectangular plate in the limiting frame 22 contacts the adjacent sliding seat 16, thereby driving the adjacent sliding seat 16 to slide synchronously.

[0074] With the action of all the limit frames 22 driving the adjacent sliding seats 16 to slide along the rotating drum 14, all the sliding seats 16 on the same side are gradually located in the same straight line, thereby realizing the switching of the states of all the sliding seats 16 and all the swing shells 17 on the same side. The switching process mentioned above is when all the swing shells 17 are swung to the state flush with the horizontal plane.

[0075] In the process of all the sliding seats 16 rotating along the rotating drum 14, taking the sliding process of one of the sliding seats 16 as an example, when the other side of the sliding seat 16 slides to fit with the rotating drum 14, the telescopic portion of the third hydraulic telescopic rod 74 located in the arc-shaped plate on the sliding seat 16 fits with the rotating drum 14, and the other side of the telescopic portion of the first hydraulic telescopic rod 50 also fits with the rotating drum 14. When the sliding seat 16 continues to slide, the telescopic portion of the third hydraulic telescopic rod 74 is squeezed. At this time, the pressure of the third hydraulic telescopic rod 74 located in the arc-shaped plate on the sliding seat 16 increases, and the third hydraulic telescopic rod 74 is compressed. After the pressure increases, the hydraulic oil is transported to the adjacent third hydraulic telescopic rod 74 (i.e., the third hydraulic telescopic rod 74 located in the guide pin on the sliding seat 16) through the adjacent first liquid pipe, thereby causing the adjacent fourth hydraulic telescopic rod 75 to slide to the left along the adjacent sliding seat 16 and the swing shell 17. During the sliding of the fourth hydraulic telescopic rod 75 to the left, the fixed pin thereon is disengaged from the contact with the limiting groove in the first limiting ring 72 (the adjacent second spring is squeezed during the sliding of the fourth hydraulic telescopic rod 75), and gradually moves toward the limiting groove in the adjacent second limiting ring 73.

[0076] When the sliding seat 16 continues to slide, the pressure in the first hydraulic telescopic rod 50 increases, and the first hydraulic telescopic rod 50 transfers the hydraulic oil therein to the adjacent second hydraulic telescopic rod 51 through the adjacent connecting pipe 52, thereby increasing the pressure in the second hydraulic telescopic rod 51, causing the rotating shell 18 to swing outward along the adjacent swinging shell 17, thereby reducing the distance between the side of the rotating shell 18 away from the adjacent swinging shell 17 and the mixing tank 12, so that the angle between the rotating shell 18 and the adjacent swinging shell 17 is greater than 90°, and shortening the distance between the scraper on the rotating shell 18 and the mixing tank 12.

[0077] When all the sliding seats 16 on the same side slide to the other side and are aligned with the rotating drum 14, the fourth hydraulic telescopic rod 75 is pushed by the adjacent third hydraulic telescopic rod 74 to the limiting groove in the second limiting ring 73 where the fixing pin on the fourth hydraulic telescopic rod 75 is located. At this time, the switching of the states of all the sliding seats 16 has been completed.

[0078] After all the sliding seats 16 slide to fit with the other side of the rotating drum 14, the rotating drum 14 is driven to rotate clockwise. After all the sliding seats 16 and the swinging shells 17 rotate until the swinging shells 17 and the adjacent rotating shells 18 are located at the lower part of the mixing tank 12, the rotating shells 18 are changed in angle so that the rotating shells 18 and the adjacent swinging shells 17 can gradually squeeze the powdered materials in the agglomerate while the rotating drum 14 rotates, so that the powdered materials in the agglomerate are gradually flattened, significantly increasing the surface area of ​​the powdered materials in the agglomerate and reducing the thickness. In this way, the flattened agglomerates are more easily broken up into fine particles, thereby shortening the time required for stirring.

[0079] Under the action of the scraper on the rotating shell 18 fitting against the mixing tank 12, the rotating shell 18 and the swinging shell 17 can transfer the flattened powdered material upwards while the drum 14 rotates. When the powdered material in the flattened state rotates to the upper part of the mixing tank 12 along with the rotating shell 18 and the swinging shell 17, the fixing pin on the fourth hydraulic telescopic rod 75 slides along the wavy portion of the limiting groove in the adjacent second limiting ring 73.

[0080] When the fixing pin on the fourth hydraulic telescopic rod 75 slides along the wavy portion of the limiting groove in the adjacent second limiting ring 73 to a side away from the fixing rod 71, the telescopic portion of the fourth hydraulic telescopic rod 75 is retracted, thereby increasing the pressure in the fourth hydraulic telescopic rod 75. After the pressure in the fourth hydraulic telescopic rod 75 increases, the hydraulic oil in the fourth hydraulic telescopic rod 75 enters the adjacent elastic liquid capsule 60 through the adjacent second liquid passage, causing the elastic liquid capsule 60 to expand and drive the adjacent limiting shell 61 and the sliding knife 62 to slide in the direction of the powdery material. Through the sliding of the sliding knife 62, the powdery material in the squeezed state is squeezed, so that the powdery material in the squeezed state can be dispersed, thereby realizing the decomposition of the powdery material in the squeezed state, and further enhancing the uniformity of the powdery material in the squeezed state with other powdery materials (when the fixing pin on the fourth hydraulic telescopic rod 75 slides along the wavy portion of the limiting groove in the adjacent second limiting ring 73 to a side close to the fixing rod 71, the pressure in the fourth hydraulic telescopic rod 75 is reduced, so that the elastic liquid capsule 60 drives the limiting shell 61 and the sliding knife 62 thereon to reset and slide).

[0081] When it is no longer necessary to flatten the agglomerated powdered material, the driving member 11 resumes forward rotation (i.e., the driving member 11 drives the connecting block 13 to rotate counterclockwise), and the driving member 11 drives the rotating disk 20 and the two connecting columns 21 to rotate counterclockwise through the connecting block 13. At this time, the resistance plate on the rotating drum 14 increases the resistance between the rotating drum 14 and the powdered material, causing the rotating drum 14 to stop rotating or reduce the rotation speed. During the counterclockwise rotation of the connecting column 21, the adjacent sliding seats 16 are respectively driven to rotate and reset. The sliding seat 16 drives the limiting frame 22 to rotate counterclockwise along the rotating drum 14, so that the L-shaped frame in the limiting frame 22 contacts the adjacent sliding seat 16, so that the sliding seat 16 drives the adjacent sliding seat 16 to reset and slide through the limiting frame 22 during the sliding process along the rotating drum 14. The subsequent sliding of the sliding seat 16 can repeat the above, and the adjacent first spring is gradually reset during the sliding process of the sliding seat 16.

[0082] During the process of rotating and resetting, the sliding seat 16 no longer contacts the other side of the rotating drum 14, so the third hydraulic telescopic rod 74 and the adjacent first hydraulic telescopic rod 50 no longer contact the other side of the rotating drum 14, and the fourth hydraulic telescopic rod 75 is driven to slide and reset under the action of the adjacent second spring. The sliding of the fourth hydraulic telescopic rod 75 increases the pressure in the adjacent third hydraulic telescopic rod 74, so that the hydraulic oil in the adjacent third hydraulic telescopic rod 74 of the fourth hydraulic telescopic rod 75 re-enters the other third hydraulic telescopic rod 74 through the adjacent first liquid pipe.

[0083] When all the sliding seats 16 slide to close Figure 3 After the state is reached, the first hydraulic telescopic rod 50 is close to the counterclockwise side of the rotating drum 14 and fits therewith. At this time, all the sliding seats 16 continue to slide, and the counterclockwise side of the first hydraulic telescopic rod 50 is squeezed, reducing the pressure in the first hydraulic telescopic rod 50, so that the hydraulic oil in the adjacent second hydraulic telescopic rod 51 enters the first hydraulic telescopic rod 50 through the adjacent connecting pipe 52. After the hydraulic oil in the second hydraulic telescopic rod 51 flows into the connecting pipe 52, the telescopic portion of the second hydraulic telescopic rod 51 drives the rotating shell 18 to swing and reset.

[0084] When all the above parts are slid to the Figure 3 After reaching the state in the mixing tank 12, the stirring of the powdered material in the mixing tank 12 is restarted.

[0085] When it is no longer necessary to stir the powdered material in the mixing tank 12 , the user can simply turn off the driving member 11 , and finally discharge the powdered material in the mixing tank 12 .

[0086] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 method for preparing a phosphogypsum modifier, characterized in that: It includes the following preparation formula: Fly ash, calcium oxide, calcium hydroxide, sodium hydroxide, calcium chloride, polyaluminium chloride; The proportion is 20% to 40% fly ash, 30% to 50% calcium oxide, 20% to 35% calcium hydroxide, 0.01% to 0.03% sodium hydroxide, 0.01% to 0.04% calcium chloride, and 0.01% to 0.04% polyaluminium chloride; The preparation method adopted in the above preparation formula is: Fly ash, calcium oxide, calcium hydroxide, sodium hydroxide, calcium chloride and polyaluminium chloride are put into a stirring device, and the stirring device is used to stir and mix the former so that the former can be fully mixed and uniform.

2. A preparation device used for a phosphogypsum modifier, characterized in that: include: Base frame (10); A driving member (11) is arranged on one side of the base frame (10); A stirring tank (12) is fixedly connected to the other side of the base frame (10), and the stirring tank (12) is rotatably connected to a connecting block (13) which is drivingly connected to the driving member (11); A rotating drum (14) is rotatably connected to the stirring tank (12), the rotating drum (14) is fixedly connected with a resistance plate, the rotating drum (14) is provided with a circular and linear array of slide grooves (15), a sliding seat (16) is slidably connected in the slide groove (15), a first spring fixedly connected to the sliding seat (16) is provided in the slide groove (15), the lengths of the circular and linear array of the slide grooves (15) are different, the sliding seat (16) is fixedly connected with a swing shell (17), the swing shell (17) is rotatably connected with a rotating shell (18) on a side away from the adjacent sliding seat (16), the rotating drum (14) is rotatably connected with a sealing shell (19) the same number as the slide grooves (15) in the linear array, the sealing shell (19) is fixedly connected to the adjacent and circular array of the swing shells (17); A connecting assembly is arranged on the rotating drum (14) and is used to connect the connecting block (13) and the rotating drum (14).

3. The preparation device used for the phosphogypsum modifier according to claim 2, characterized in that: The connection component comprises: A rotating disk (20) is rotatably connected to a side of the rotating drum (14) close to the driving member (11), the rotating disk (20) is fixedly connected to the connecting block (13), the sliding seat (16) close to the rotating disk (20) is fixedly connected with a connecting column (21), and the connecting column (21) is fixedly connected to the rotating disk (20); The limiting frames (22) in an annular and linear array are respectively fixed to the adjacent sliding seats (16), and the limiting frames (22) are used to drive the adjacent and non-fixed sliding seats (16) to move in different ways.

4. The preparation device used for the phosphogypsum modifier according to claim 3, characterized in that: The swing shell (17) is fixedly connected with a fixed baffle (30), the projection of the fixed baffle (30) on the adjacent side of the adjacent swing shell (17) is V-shaped, and the V-shaped tip of the swing shell (17) faces the adjacent rotating shell (18).

5. The preparation device used for the phosphogypsum modifier according to claim 4, characterized in that: The cross section of the fixed baffle (30) is trapezoidal and is used to guide the powdered material on the fixed baffle (30).

6. The preparation device used for the phosphogypsum modifier according to claim 5, characterized in that: An L-shaped block (40) is fixedly connected to one side of the rotating shell (18) facing the adjacent fixed baffle (30); the L-shaped block (40) is rotatably connected to an L-shaped swing plate (41) in contact with the adjacent swing shell (17); a torsion spring is arranged between the L-shaped block (40) and the L-shaped swing plate (41); a driving assembly is arranged in the sliding seat (16); the driving assembly is used to make the adjacent rotating shell (18) swing.

7. The preparation device used for the phosphogypsum modifier according to claim 6, characterized in that: The drive assembly comprises: A first hydraulic telescopic rod (50) is fixedly connected to the sliding seat (16), and a telescopic portion of the first hydraulic telescopic rod (50) is in contact with the rotating drum (14); a second hydraulic telescopic rod (51) hinged between the rotating shell (18) and the adjacent swing shell (17); the swing shell (17) is fixedly connected with a connecting pipe (52); the second hydraulic telescopic rod (51) is connected to the first hydraulic telescopic rod (50) via the connecting pipe (52); and the connecting position of the connecting pipe (52) and the first hydraulic telescopic rod (50) is not located in the middle thereof; An extrusion assembly is arranged in the rotating shell (18) and is used for extruding surrounding powdered materials.

8. The preparation device used for the phosphogypsum modifier according to claim 7, characterized in that: The extrusion assembly comprises: An elastic liquid bag (60) is fixedly connected to the rotating shell (18); The spaced-apart limiting shells (61) are all fixedly connected to the elastic liquid bag (60), and the limiting shells (61) are rotatably connected to a sliding knife (62) which is slidably connected to the rotating shell (18).

9. The preparation device used for the phosphogypsum modifier according to claim 8, characterized in that: Also includes: An adjusting component is disposed in the stirring tank (12) and is used to adjust the expansion degree of all the elastic liquid sacs (60), and the adjusting component comprises: A fixing frame (70) fixedly connected to a side of the stirring tank (12) away from the driving member (11); A fixed rod (71) is fixedly connected to the fixed frame (70), and the fixed rod (71) is fixedly connected with a first limiting ring (72) and a second limiting ring (73) of a linear array, and limiting grooves are arranged in the first limiting ring (72) and the second limiting ring (73). The sliding seat (16) is fixedly connected with two third hydraulic telescopic rods (74), and the two third hydraulic telescopic rods (74) are connected through a first liquid pipe. When the side of the sliding seat (16) close to the first spring is in contact with the rotating drum (14), the third hydraulic telescopic rod (74) close to the swing housing (17) is extended. The contraction part contacts the rotating drum (14), the swing shell (17) is slidably connected with a fourth hydraulic telescopic rod (75), a second spring is fixedly connected between the fourth hydraulic telescopic rod (75) and the swing shell (17), the telescopic part of the fourth hydraulic telescopic rod (75) is slidably connected with the telescopic part of the adjacent third hydraulic telescopic rod (74), a fixing pin is fixedly connected to one side of the fourth hydraulic telescopic rod (75) close to the adjacent third hydraulic telescopic rod (74), and the limiting grooves in the first limiting ring (72) and the second limiting ring (73) are both used to guide the fixing pin of the fourth hydraulic telescopic rod (75).

10. The preparation device used for the phosphogypsum modifier according to claim 9, characterized in that: The distance between the first limiting ring (72) and the second limiting ring (73) is greater than the length of the fixing pin on the fourth hydraulic telescopic rod (75); the side of the fourth hydraulic telescopic rod (75) away from the adjacent sliding seat (16) is connected to the elastic liquid bag (60) through a second liquid passage pipe penetrating the adjacent rotating shell (18); the limiting groove of the first limiting ring (72) is annular; the limiting groove of the second limiting ring (73) is composed of an arc-shaped portion and a wavy portion; the wavy portion in the second limiting ring (73) is located at the upper part; and a scraper is fixedly connected to the side of the rotating shell (18) away from the adjacent swinging shell (17).

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