Method for testing proportion of phosphogypsum cementing material

Abstract

The invention provides an ardealite cementing material proportion test method which specifically comprises the following steps: step 1, ardealite sampling: sampling ardealite, and then carrying out physicochemical property analysis on the sampled ardealite; step 2, selecting a cementing material, and carrying out physicochemical property analysis on the selected cementing material; and 3, proportioning test: proportioning the materials through proportioning and mixing equipment, and optimizing the test to obtain the feasibility of the scheme. According to the proportion test method for the ardealite cementing material, during use, the charging basket and the movable seat which are opposite to each other are matched, and the movable seat moves up and down to adjust discharge ports and feed ports of different sizes to be matched so as to adjust the feeding speed; under the condition that the feeding speed is adjusted, the materials in different proportions can be conveniently mixed uniformly and rapidly in the later period, the three material barrels are oppositely matched to complete mixing in the three proportions at the same time, a contrast experiment is carried out on the mixed materials, and the working efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the field of proportioning test equipment, in particular to a proportioning test method for phosphogypsum cementitious materials. Background Art

[0002] Phosphogypsum is a by-product of the wet production of phosphoric acid by chemical plants using phosphate rock and sulfuric acid. The main raw material for phosphate fertilizer production is phosphate rock. At present, the main method of treating phosphogypsum is stockpiling. Phosphogypsum yards occupy a large amount of land resources, and the maintenance and operation costs of slag yards are high. Therefore, how to safely dispose of and utilize the growing amount of phosphogypsum as a resource is a problem that needs to be solved urgently.

[0003] According to a phosphogypsum cementitious material proportioning test method and equipment disclosed in the patent document with the existing publication number CN115453097A, the method comprises S1, sampling the phosphogypsum, and then analyzing the physical and chemical properties of the sampled phosphogypsum; S2, selecting cementitious materials, and analyzing the physical and chemical properties of the selected cementitious materials; S3, designing a proportioning test for the phosphogypsum and cementitious materials, and then optimizing the test to obtain the feasibility of the scheme. In the step S1, the physical and chemical property analysis of the phosphate ore includes: particle size composition analysis, physical property analysis, chemical composition analysis, etc. Analysis, phase composition analysis and micromorphology analysis. When used, this technical solution takes phosphogypsum as the research object, explores the basic physical and chemical properties of phosphogypsum filling raw materials, proposes a way to stimulate the activity of phosphogypsum cementitious materials; determines the optimal ratio of phosphogypsum filling materials; and solves the environmental impact problems in the filling process, thereby reducing the filling cost, increasing the resource recovery rate, and alleviating many problems such as its surface storage. Regarding the above-mentioned technical solution, although this solution improves the resource recovery rate, it is unable to simultaneously realize the ratio test of multiple materials when proportioning the materials, which is inconvenient when used. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for testing the proportion of phosphogypsum cementitious materials to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure. When in use, the material barrels at opposite positions cooperate with the movable seat, and the movable seat moves up and down to adjust the discharge ports of different sizes and cooperates with the feed port to adjust the feeding speed. When the feeding speed is adjusted, the materials in different proportions can be mixed evenly and quickly in the later stage. The material barrels at three positions cooperate with each other to complete the mixing of the three proportions at the same time. After mixing, the materials are subjected to comparative experiments, which effectively improves work efficiency.

[0005] In order to achieve the above object, the present invention is implemented by the following technical scheme: a phosphogypsum cementitious material ratio test method, specifically comprising the following steps:

[0006] Step 1: sampling phosphogypsum, sampling the phosphogypsum, and then analyzing the physical and chemical properties of the sampled phosphogypsum;

[0007] Step 2: Select a cementitious material and analyze the physical and chemical properties of the selected cementitious material;

[0008] Step 3: Proportion test: use proportioning and mixing equipment to carry out the ratio of materials, and then optimize the test to obtain the feasibility of the solution;

[0009] Step 4: Property analysis, which includes particle composition analysis, physical performance analysis, chemical composition analysis, phase composition analysis and microscopic morphology analysis;

[0010] Step 5: Experimental design;

[0011] Step 6: Experimental conclusion.

[0012] Furthermore, the cementitious material in step 2 includes fly ash, phosphorus slag, ordinary Portland cement and red mud.

[0013] Furthermore, in the step three, an orthogonal design test method is used to study and analyze the phosphogypsum and cementitious materials, and the property analysis in the step four includes the property analysis of the phosphogypsum and cementitious materials.

[0014] Furthermore, the proportioning and mixing equipment in step three includes a box body, a fixed seat is welded to the side of the box body, a cavity is opened inside the fixed seat, a movable seat is movably installed inside the cavity, a material barrel is fixed on the top of the movable seat, a power mechanism and a feed pipe are respectively fixedly installed on the top of the material barrel, a pushing mechanism is fixedly installed on the bottom of the fixed seat, one end of the pushing mechanism is fixed to the bottom of the movable seat, and a discharge pipe is fixedly installed on the side of the box body.

[0015] Furthermore, a lifting mechanism and an air pipe are fixed on the top of the box, an air jet pipe is fixed on the bottom of the air pipe, one end of the air jet pipe is fixed inside the box, and a stirring motor is fixedly installed on the side of the box.

[0016] Furthermore, a discharge port is opened on the side of the movable seat, a feed port is opened on the side of the box body, the feed port cooperates with the discharge port, a slider is welded on the side of the movable seat, a slide groove is opened on the inner wall of the cavity, and the slider is movably installed inside the slide groove.

[0017] Furthermore, a crushing chamber is opened inside the material barrel, an output shaft is rotatably installed inside the crushing chamber, one end of the output shaft is installed on the power mechanism, a crushing rod and a toggle plate are respectively welded on the output shaft, and the toggle plate is movably installed inside the movable seat.

[0018] Furthermore, a stirring chamber is opened inside the box body, a feed inclined tube is opened inside the stirring chamber, one end of the feed inclined tube is connected to the feed port, a storage chamber is opened on the top of the feed inclined tube, a sealing block is movably installed inside the storage chamber, and the sealing block is fixedly installed at one end of the lifting mechanism.

[0019] Furthermore, a partition plate is welded inside the stirring chamber, a rotating column is rotatably mounted on the partition plate, a stirring assembly is fixed on the rotating column, the stirring assembly includes a stirring plate and a stirring column, and the stirring plate cooperates with one end of the discharge pipe.

[0020] Furthermore, the jet pipes are respectively distributed between the partition plates, control valves are fixedly mounted on the jet pipes, and a support frame is fixedly mounted on the bottom of the box.

[0021] Beneficial effects of the present invention:

[0022] 1. A method for testing the proportion of phosphogypsum cementitious materials. When in use, the material barrels at opposite positions cooperate with the movable seat. The movable seat moves up and down to adjust the discharge ports of different sizes and cooperates with the feed port to adjust the feeding speed. When the feeding speed is adjusted, the materials in different proportions can be mixed evenly and quickly in the later stage. The material barrels at three positions cooperate with each other to complete the mixing of the three proportions at the same time. After mixing, the materials are compared and tested, which effectively improves work efficiency.

[0023] 2. A method for testing the proportion of phosphogypsum cementitious materials. The rotation direction of the stirring component at a later stage controls the material to be discharged from the discharge pipe at a later stage. When the stirring component drives the material to push one end of the discharge pipe, it is convenient to realize the later pushing and discharging. The stirring component rotates in the opposite direction to push the material to rotate and stir in the opposite direction of the discharge pipe for mixing. At a later stage, the sealing block is closed and the jet pipe is started. The jet pipe enters the wind flow to discharge all the material from the discharge pipe, which is convenient for cleaning the internal powder material. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the steps of a phosphogypsum cementitious material ratio test method of the present invention;

[0025] Figure 2 It is a structural schematic diagram of a proportioning and mixing device for a proportioning test method of a phosphogypsum cementitious material of the present invention;

[0026] Figure 3 It is a structural schematic diagram of a discharge port of a phosphogypsum cementitious material ratio test method of the present invention;

[0027] Figure 4 It is a schematic structural diagram of a material barrel after being cut open for a method for testing the proportion of phosphogypsum cementitious materials of the present invention;

[0028] Figure 5 It is a schematic diagram of the side cross-sectional structure of a movable seat of a phosphogypsum cementitious material ratio test method of the present invention;

[0029] Figure 6 It is a schematic diagram of the left side cross-sectional structure of a box of a phosphogypsum cementitious material ratio test method of the present invention;

[0030] Figure 7 It is a schematic diagram of a side cross-sectional structure of a box body of a phosphogypsum cementitious material ratio test method of the present invention;

[0031] In the figure: 1. box body; 2. stirring motor; 3. fixed seat; 4. cavity; 5. movable seat; 6. barrel; 7. power mechanism; 8. feed pipe; 9. lifting mechanism; 10. air pipe; 11. jet pipe; 12. pushing mechanism; 13. discharge pipe; 14. support frame; 15. slider; 16. discharge port; 17. crushing chamber; 18. output shaft; 19. crushing rod; 20. toggle plate; 21. storage chamber; 22. sealing block; 23. feed port; 24. feed inclined pipe; 25. stirring chamber; 26. stirring assembly; 27. partition plate; 28. rotating column; 29. ​​stirring plate; 30. stirring column. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] See also Figures 1 to 7 The present invention provides a technical solution: a method for testing the proportion of phosphogypsum cementitious materials, which specifically comprises the following steps:

[0034] Step 1: sampling phosphogypsum, sampling the phosphogypsum, and then analyzing the physical and chemical properties of the sampled phosphogypsum;

[0035] Step 2: Select a cementitious material and analyze the physical and chemical properties of the selected cementitious material;

[0036] Step 3: Proportion test: use proportioning and mixing equipment to carry out the ratio of materials, and then optimize the test to obtain the feasibility of the solution;

[0037] Step 4: Property analysis, which includes particle composition analysis, physical performance analysis, chemical composition analysis, phase composition analysis and microscopic morphology analysis;

[0038] Step 5: Experimental design;

[0039] Step 6: Experimental conclusion.

[0040] In this embodiment, the cementitious materials described in step 2 include fly ash, phosphorus slag, ordinary Portland cement and red mud, the orthogonal design experimental method is adopted in step 3 to study and analyze phosphogypsum and cementitious materials, and the property analysis in step 4 includes property analysis of phosphogypsum and cementitious materials.

[0041] In this embodiment, the proportioning and mixing equipment in the step three includes a box body 1, a fixed seat 3 is welded on the side of the box body 1, a cavity 4 is opened inside the fixed seat 3, a movable seat 5 is movably installed inside the cavity 4, a barrel 6 is fixed on the top of the movable seat 5, a power mechanism 7 and a feed pipe 8 are fixedly installed on the top of the barrel 6, the power mechanism 7 is a DC motor, and the DC motor drives the output shaft 18 to rotate to stir the material and move it downward, a pushing mechanism 12 is fixedly installed on the bottom of the fixed seat 3, one end of the pushing mechanism 12 is fixed to the bottom of the movable seat 5, a discharge pipe 13 is fixedly installed on the side of the box body 1, and a lifting mechanism 9 and an air pipe 10 are fixed on the top of the box body 1, and the pushing mechanism 12 and the lifting mechanism 9 They are all linear reciprocating electric push rods, which push the movable seat 5 up and down through the pushing mechanism 12. The movable seat 5 moves up and down to adjust the discharge port 16 of different sizes to cooperate with the feed port 23 for feeding. The bottom of the air pipe 10 is fixed with an injection pipe 11, and one end of the injection pipe 11 is fixed inside the box body 1. The side of the box body 1 is fixed with a stirring motor 2. The side of the movable seat 5 is provided with a discharge port 16, and the side of the box body 1 is provided with a feed port 23. The feed port 23 cooperates with the discharge port 16. A slider 15 is welded on the side of the movable seat 5, and a slide groove is provided on the inner wall of the cavity 4. The slider 15 is movably installed inside the slide groove, and the slider 15 cooperates with the slide groove to ensure the vertical up and down movement of the movable seat 5.

[0042] In this embodiment, a crushing chamber 17 is opened inside the material barrel 6, an output shaft 18 is rotatably installed inside the crushing chamber 17, one end of the output shaft 18 is installed on the power mechanism 7, a crushing rod 19 and a toggle plate 20 are respectively welded on the output shaft 18, and the toggle plate 20 is movably installed inside the movable seat 5, a stirring chamber 25 is opened inside the box body 1, a feed inclined tube 24 is opened inside the stirring chamber 25, one end of the feed inclined tube 24 is connected to the feed port 23, a storage chamber 21 is opened on the top of the feed inclined tube 24, a sealing block 22 is movably installed inside the storage chamber 21, and the sealing block 22 is fixedly installed on the lifting mechanism 9. At one end, a partition plate 27 is welded inside the stirring chamber 25, a rotating column 28 is rotatably mounted on the partition plate 27, a stirring assembly 26 is fixed on the rotating column 28, the stirring assembly 26 includes a stirring plate 29 and a stirring column 30, the stirring plate 29 cooperates with one end of the discharge pipe 13, the jet pipes 11 are respectively distributed between the partition plates 27, control valves are fixedly mounted on the jet pipes 11, a support frame 14 is fixedly mounted on the bottom of the box body 1, a sealing block 22 seals the feed inclined pipe 24, and high-pressure gas enters after sealing, and the gas pushes the material inside the stirring chamber 25 to be quickly discharged from the discharge pipe 13, which is convenient for later discharge use.

[0043] When the device is in use, the phosphogypsum material and the cementitious material are respectively introduced into the interior of the barrel 6 at the opposite position through the feed pipe 8, the power mechanism 7 is started to drive the output shaft 18 to rotate, and the output shaft 18 drives the crushing rod 19 and the toggle plate 20 to rotate, so as to crush the agglomerated materials in the barrel 6, and the crushed materials are upwardly introduced into the interior of the movable seat 5, and the speed of entering the interior of the stirring chamber 25 is controlled according to the difference in the volume of the materials, and the pushing mechanism 12 is started to drive the movable seat 5 to move up and down, and the discharge ports 16 of different sizes on the movable seat 5 are matched with the feed ports 23, and the different feeding speeds on both sides are adjusted by the difference in the width of the feed ports 23 and the discharge ports 16, and the materials enter the interior of the stirring chamber 25 through the feed inclined tube 24 under the toggle of the toggle plate 20, and the stirring motor 2 is started to drive the rotation The column 18 rotates, and the rotating column 18 drives the stirring component 16 to rotate in the opposite direction of the discharge direction of the discharge pipe 13. During the reverse rotation, the stirring plate 29 and the stirring column 30 inside the stirring component 16 stir and mix the materials. After the stirring and mixing is completed, the stirring component 16 is rotated in the opposite direction, and the stirring plate 29 squeezes the materials. Under the extrusion, the materials enter the inside of the discharge pipe 13 and are discharged. Under the push of the stirring plate 29, it is convenient for the subsequent discharge. After the discharge is completed, the lifting mechanism 9 is started to push the sealing block 22 to seal the feed inclined pipe 24. After sealing, the external air supply equipment provides high-pressure gas to enter the inside of the air pipe 10. The gas inside the air pipe 10 enters between the partition plates 27 through the jet pipe 11, and the materials between the partition plates 27 are pushed to the inside of the discharge pipe 13 and are all discharged, which is convenient for the subsequent cleaning and use.

[0044] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0045] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for testing the proportion of phosphogypsum cementitious materials, characterized in that: The specific steps include: Step 1: sampling phosphogypsum, sampling the phosphogypsum, and then analyzing the physical and chemical properties of the sampled phosphogypsum; Step 2: Select a cementitious material and analyze the physical and chemical properties of the selected cementitious material; Step 3: Proportion test: use proportioning and mixing equipment to carry out the ratio of materials, and then optimize the test to obtain the feasibility of the solution; Step 4: Property analysis, which includes particle composition analysis, physical performance analysis, chemical composition analysis, phase composition analysis and microscopic morphology analysis; Step 5: Experimental design; Step 6: Experimental conclusion.

2. A phosphogypsum cementitious material ratio test method according to claim 1, characterized in that: The cementitious materials described in step 2 include fly ash, phosphorus slag, ordinary Portland cement and red mud.

3. A phosphogypsum cementitious material ratio test method according to claim 1, characterized in that: In the step three, an orthogonal design test method is used to study and analyze phosphogypsum and cementitious materials, and the property analysis in the step four includes the property analysis of phosphogypsum and cementitious materials.

4. A phosphogypsum cementitious material ratio test method according to claim 1, characterized in that: The proportioning and mixing equipment in step three includes a box body, a fixed seat is welded on the side of the box body, a cavity is opened inside the fixed seat, a movable seat is movably installed inside the cavity, a material barrel is fixed on the top of the movable seat, a power mechanism and a feed pipe are respectively fixedly installed on the top of the material barrel, a pushing mechanism is fixedly installed on the bottom of the fixed seat, one end of the pushing mechanism is fixed to the bottom of the movable seat, and a discharge pipe is fixedly installed on the side of the box body.

5. A phosphogypsum cementitious material ratio test method according to claim 4, characterized in that: A lifting mechanism and an air pipe are fixed on the top of the box, an air jet pipe is fixed on the bottom of the air pipe, one end of the air jet pipe is fixed inside the box, and a stirring motor is fixedly installed on the side of the box.

6. A phosphogypsum cementitious material ratio test method according to claim 4, characterized in that: A discharge port is provided on the side of the movable seat, a feed port is provided on the side of the box body, the feed port matches the discharge port, a slider is welded on the side of the movable seat, a slide groove is provided on the inner wall of the cavity, and the slider is movably installed inside the slide groove.

7. A phosphogypsum cementitious material ratio test method according to claim 4, characterized in that: A crushing chamber is opened inside the material barrel, an output shaft is rotatably installed inside the crushing chamber, one end of the output shaft is installed on the power mechanism, a crushing rod and a toggle plate are respectively welded on the output shaft, and the toggle plate is movably installed inside the movable seat.

8. A phosphogypsum cementitious material ratio test method according to claim 4, characterized in that: A stirring chamber is provided inside the box body, a feed inclined tube is provided inside the stirring chamber, one end of the feed inclined tube is connected to the feed port, a storage chamber is provided on the top of the feed inclined tube, a sealing block is movably installed inside the storage chamber, and the sealing block is fixedly installed at one end of the lifting mechanism.

9. A phosphogypsum cementitious material ratio test method according to claim 8, characterized in that: A partition plate is welded inside the stirring chamber, a rotating column is rotatably mounted on the partition plate, a stirring assembly is fixed on the rotating column, the stirring assembly includes a stirring plate and a stirring column, and the stirring plate cooperates with one end of a discharge pipe.

10. A phosphogypsum cementitious material ratio test method according to claim 5, characterized in that: The jet pipes are respectively distributed between the partition plates, control valves are fixedly installed on the jet pipes, and a support frame is fixedly installed on the bottom of the box.

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