CN117776562B - Red mud-containing low-carbon gel material and preparation process and preparation equipment thereof - Google Patents
Red mud-containing low-carbon gel material and preparation process and preparation equipment thereof Download PDFInfo
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- CN117776562B CN117776562B CN202410023171.XA CN202410023171A CN117776562B CN 117776562 B CN117776562 B CN 117776562B CN 202410023171 A CN202410023171 A CN 202410023171A CN 117776562 B CN117776562 B CN 117776562B
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- 238000002360 preparation method Methods 0.000 title claims description 19
- 239000000463 material Substances 0.000 title abstract description 22
- 229910052799 carbon Inorganic materials 0.000 title abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 33
- 238000007873 sieving Methods 0.000 claims description 62
- 238000000227 grinding Methods 0.000 claims description 49
- 238000004804 winding Methods 0.000 claims description 17
- 239000002245 particle Substances 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 9
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- 238000000429 assembly Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 7
- 239000004744 fabric Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 16
- 239000002893 slag Substances 0.000 abstract description 15
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract description 12
- 229910052683 pyrite Inorganic materials 0.000 abstract description 12
- 239000011028 pyrite Substances 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 230000008901 benefit Effects 0.000 abstract description 10
- 239000002440 industrial waste Substances 0.000 abstract description 10
- 239000002699 waste material Substances 0.000 abstract description 9
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 abstract description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 7
- 239000004927 clay Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 229910052710 silicon Inorganic materials 0.000 abstract description 7
- 239000010703 silicon Substances 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 239000002910 solid waste Substances 0.000 description 5
- 239000011398 Portland cement Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
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- 238000004064 recycling Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
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- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- 238000007323 disproportionation reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
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- 238000009776 industrial production Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
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- Combined Means For Separation Of Solids (AREA)
Abstract
The application discloses a red mud-containing low-carbon gel material, which relates to the technical field of material formulas, and comprises the following components: 45 to 60% of red mud; 15 to 35 percent of silicon source powder which is one or the combination of two of pyrite waste residue and clay; 10 to 20 percent of coal-based powder, wherein the coal-based powder is one or two of gangue and pulverized coal; 2 to 15 percent of industrial waste residue which is phosphogypsum, steel slag and/or slag; the technical effects of relatively high red mud utilization rate, relatively good economic benefit after treatment and relatively large treatment capacity during application are realized.
Description
Technical Field
The invention relates to the technical field of material formulas, in particular to a red mud-containing low-carbon gel material, a preparation process and preparation equipment thereof.
Background
At present, the accumulated stocking amount of a large amount of solid waste is about 600 hundred million tons, the newly increased stocking amount is about 30 hundred million tons, wherein the utilization rate of the solid waste such as red mud, phosphogypsum, steel slag and the like is still lower, a large amount of land resources are occupied, and great ecological environment potential safety hazards exist.
Red mud is a byproduct of aluminum oxide production, is solid waste with the largest production amount in the aluminum industry, and is called red mud because of large iron oxide content and similar appearance to red mud. The alumina yield in China is 55% of the world, 1 ton to 2 tons of red mud is generally produced every 1 ton of alumina, and the annual red mud emission exceeds 1 hundred million tons; although a lot of important progress is made on the research of comprehensive utilization of red mud at home and abroad, the existing comprehensive utilization technology has the problems of high cost, complex process, poor economic benefit, small treatment capacity of the red mud, disproportionation to the discharge capacity of the red mud and the like, so that the large-scale utilization of the red mud is not realized worldwide so far, and the problems of comprehensive utilization and recycling of the red mud are still worldwide difficult; in addition, industrial solid wastes such as phosphogypsum, pyrite waste residue, steel slag and the like occupy a large amount of land resources, and have the problems of low utilization rate, complex process, difficult large-scale utilization and the like.
In summary, a new material capable of fully utilizing solid waste such as red mud is urgently needed in the prior art.
Disclosure of Invention
The embodiment of the application solves the technical problems of low red mud utilization rate, poor economic benefit during utilization, difficult full recycling, large occupied land resource and small treatment capacity during application in the prior art by providing the low-carbon gelling material containing the red mud, and realizes the technical effects of relatively high red mud utilization rate, relatively good economic benefit after treatment and relatively large treatment capacity during application.
The embodiment of the application provides a red mud-containing low-carbon gelling material, which comprises the following components:
Red mud: 45% to 60%;
Silicon source powder: 15% to 35%; the silicon source powder is one or the combination of two of pyrite waste residue and clay;
coal-based powder: 10% to 20%; the coal-based powder is one or two of gangue and pulverized coal;
Industrial waste residues: 2% to 15%; the industrial waste residue is phosphogypsum, steel slag and/or slag.
Preferably, the specific proportion is as follows: 50% of red mud, 20% of pyrite waste residue, 15% of coal gangue, 10% of phosphogypsum and 5% of steel slag.
A process for preparing a red mud-containing low carbon gel material, which is used for preparing the red mud-containing low carbon gel material according to claim 1; the method comprises the following steps of:
Step one: drying the red mud, pyrite powder and clay at 105 ℃ and grinding to below 200 meshes; respectively adopting plasma secondary drying or ultrasonic vibration to the materials;
Step two: mixing gangue, coal dust and industrial waste residues in proportion, and grinding to below 150 meshes;
step three: mixing and grinding the red mud, the silicon source powder, the coal-based powder and the industrial waste residue powder for 30 to 100 minutes;
Step four: calcining the powder obtained in the third step for 6 to 12 hours at 1000 to 1200 ℃ in the atmosphere of oxygen;
step five: and (3) after the powder obtained in the step four is cooled, crushing and grinding to 200 meshes.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
The red mud and the industrial waste residues are used as main raw materials to prepare the fire-resistant and burn-resistant cementing material, so that the preparation process is simple, the energy consumption is low, and the industrial production is convenient; the method effectively solves the technical problems of low red mud utilization rate, poor economic benefit during utilization, difficulty in full recycling, large occupied land resource amount and small treatment capacity during application in the prior art, and further achieves the technical effects of relatively high red mud utilization rate, relatively good economic benefit after treatment and relatively large treatment capacity during application.
Drawings
FIG. 1 is a schematic view of the internal structure of a manufacturing apparatus;
FIG. 2 is a schematic view of the external structure of the manufacturing apparatus;
FIG. 3 is a schematic diagram of the layout of the telescoping rotating assembly, abrasive disk assembly and carrier ring;
FIG. 4 is a schematic illustration of the structure between the screen assembly and the abrasive disk assembly;
FIG. 5 is a schematic view of the positional relationship between the screen assembly and the abrasive disk assembly;
FIG. 6 is a schematic diagram of the layout of a screen assembly and a jacking cylinder;
FIG. 7 is a schematic diagram of the layout of the locating and fixing pins, side gates and the housing;
FIG. 8 is a schematic diagram of the positional relationship of the replacement auxiliary assembly to the housing;
FIG. 9 is a schematic diagram of the positional relationship between the take-up reel and the load-bearing positioning rope;
FIG. 10 is a schematic view of a displacement assembly;
FIG. 11 is a schematic diagram of a layout relationship between a displacement assembly and a housing;
FIG. 12 is a schematic view of the external appearance of an alternative auxiliary assembly;
FIG. 13 is a schematic diagram of an alternative auxiliary assembly;
Fig. 14 is a schematic diagram of the layout of positioning magnets on a screen assembly.
In the figure:
the device comprises a shell 100, an upper cover 110, a charging pipe 111, an air injection nozzle 112, a support frame 120, an output port 130, a positioning fixing pin 140, a side bin gate 150, a telescopic rotating assembly 200, an annular grinding disc 310, a bearing bracket 320, a bearing ring body 400, a screen assembly 500, an annular outer frame 510, a positioning groove 511, a positioning magnet 512, a sieving soft plate 520, a positioning hole 521, a bearing frame 610, a drawing assembly 620, a winding drum 621, a drawing rope 622, an inserting positioning column 623, a support body 710, a vibrating motor 720, a jacking column 730, a container plate 810, a penetrating hole 811, a taking-out port 812, a taking-out cover plate 813, a partition 814, a shifting assembly 820, a winding drum 821, a bearing positioning rope 822, a positioning piece 823, a bearing positioning hole 824 and a collision telescopic rod 830.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings; the preferred embodiments of the present application are illustrated in the drawings, but the present application can be embodied in many different forms and is not limited to the embodiments described herein; rather, these embodiments are provided so that this disclosure will be thorough and complete.
It should be noted that the terms "vertical", "horizontal", "upper", "lower", "left", "right", and the like are used herein for illustrative purposes only and do not represent the only embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; the term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
Example 1
A red mud-containing low carbon gelling material comprising:
Red mud: 45% to 60%;
Silicon source powder: 15% to 35%; the silicon source powder is one or the combination of two of pyrite waste residue and clay;
coal-based powder: 10% to 20%; the coal-based powder is one or two of gangue and pulverized coal;
Industrial waste residues: 2% to 15%; the industrial waste residue is phosphogypsum, steel slag and/or slag.
The preferred component proportions are as follows:
Component 1: 50% of red mud, 20% of pyrite waste residue, 15% of coal gangue, 10% of phosphogypsum and 5% of steel slag.
Component 2: 50% of red mud, 20% of clay, 15% of coal gangue, 10% of phosphogypsum and 5% of steel slag.
And (3) a component 3: 50% of red mud, 20% of pyrite waste residue, 15% of coal dust and 15% of steel slag.
Component 4: 55% of red mud, 25% of pyrite waste residue, 15% of coal gangue and 5% of steel slag.
And (5) a component: 55% of red mud, 25% of clay, 15% of coal gangue and 5% of steel slag.
The chemical compositions of the red mud and the chemical compositions of the pyrite waste residue are shown in tables 1 and 2; the mechanical properties of the low-carbon cementing material prepared by using the red mud in the embodiment of the invention are shown in table 3, and compared with the 42.5-grade portland cement sold in the market, as shown in table 3, the lowest compressive/flexural strength of the low-carbon cementing material in 3d, 7d and 28d is 27.6MPa/5.1MPa, 34.7MPa/8.7MPa and 63.5MPa/10.0MP respectively, which are higher than the compressive/flexural strength of the 42.5-grade portland cement in the same period, and the average compressive and flexural strength of the heel is preferably 1.5 times that of the 42.5-grade portland cement in the same period. Meanwhile, compared with ordinary Portland cement, the high-temperature baking for 30min at 1000-1200 ℃ has less than 10% of strength loss and good fire resistance.
TABLE 1 analysis of chemical content of Red mud (W%)
| Composition of the components | Al2O3 | Fe2O3 | CaO | SiO2 | MgO | Na2O | Others |
| Content of | 23.09 | 29.56 | 13.52 | 16.07 | 2.56 | 3.43 | 11.77 |
TABLE 2 analysis of chemical composition of pyrite slag (W%)
| Composition of the components | Al2O3 | Fe2O3 | CaO | SiO2 | MgO | SO3 | Others |
| Content of | 9.64 | 11.50 | 9.50 | 45.30 | 1.69 | 17.50 | 4.87 |
Table compressive/flexural strength of each group of test pieces under 320 c curing condition
The preparation process of the cementing material is used for preparing the red mud-containing low-carbon cementing material, and comprises the following steps of:
Step one: drying the red mud, pyrite powder and clay at 105 ℃ and grinding to below 200 meshes; and respectively adopting plasma secondary drying or ultrasonic vibration to the materials.
Step two: mixing gangue, coal dust and industrial waste residues in proportion, and grinding to below 150 meshes;
step three: mixing and grinding the red mud, the silicon source powder, the coal-based powder and the industrial waste residue powder for 30 to 100 minutes;
Step four: calcining the powder obtained in the third step for 6 to 12 hours at 1000 to 1200 ℃ in the atmosphere of oxygen;
step five: and (3) after the powder obtained in the step four is cooled, crushing and grinding to 200 meshes.
A preparation device for selecting powder in the powder preparation process; in the prior art, powder is selected aiming at particles, chinese patent No. CN111495497B discloses a powder selecting machine for cement preparation, the bottom surface of a grinding plate is contacted with the top surface of a screen, larger particles positioned on the top surface of the screen are ground, and the larger cement particles are not required to be collected and then sent into grinding equipment, so that the burden of the previous working procedure is reduced, and the working efficiency of the device is improved; however, the structure is relatively complex, the amount of particles remained on the surface of the screen after sieving is difficult to determine, and the screen is easily damaged (the screen is seriously worn) due to the fact that the pressure applied to the screen by direct extrusion grinding is increased; the screen mesh is easy to thoroughly block up by directly grinding, and even if vibration is performed, the screen mesh cannot be dredged, so that the processing efficiency is affected; in view of the above problems, as shown in fig. 1 to 5, the manufacturing apparatus of the present application includes a housing 100, a telescopic rotating assembly 200, a grinding disc assembly, a carrier ring 400, a screen assembly 500, a plate body shaping assembly, an oscillating screen assembly, a power assembly and a control unit;
The shell 100 is cylindrical, the top is provided with an upper cover 110, and the bottom is provided with an output port 130; the upper cover 110 is in a circular plate shape and is detachably fixed at the top of the housing 100; the upper cover 110 is provided with a feeding tube 111, and the feeding tube 111 penetrates through the upper cover 110; a supporting frame 120 is fixed on the side wall or the bottom of the shell 100, and the supporting frame 120 is in a rod shape or a frame structure and is placed on the ground to play a role in bearing and fixing;
the telescopic rotating assembly 200 is an electric telescopic rod which is longitudinally arranged, the top of the telescopic rotating assembly is rotatably connected to the bottom of the upper cover 110, and the telescopic rotating assembly rotates under the cooperative control of the power assembly and the control unit;
the grinding disc assembly is used for grinding and crushing particles, and comprises an annular grinding disc 310 and a bearing bracket 320; the annular grinding disc 310 is a hard ring body and is horizontally arranged, and the bottom surface of the annular grinding disc is an annular inclined surface; the annular grinding disc 310 is fixed at the bottom of the telescopic rotating assembly 200 through the bearing bracket 320, and the annular grinding disc 310 is coaxial with the telescopic rotating assembly 200; the bearing support 320 is in a rod-shaped, plate-shaped or frame structure, and has a bearing and supporting function, wherein the top is fixed at the bottom of the telescopic rotating assembly 200, and the bottom is fixed at the top or on the side wall of the annular grinding disc 310; when the telescopic rotating assembly 200 is extended, the annular grinding disc 310 is propped against the top of the sieving soft plate 520;
The bearing ring 400 is a rigid ring with a quadrangular or triangular longitudinal section, and is fixed on the inner wall of the casing 100 and positioned below the screen assembly 500; the bearing ring body 400 is horizontally arranged, the top surface of the bearing ring body is an annular inclined surface, the part close to the inner wall of the shell 100 is relatively high, and the part far away from the inner wall of the shell 100 is relatively low; the distance between the inner ring edge of the top surface of the bearing ring body 400 and the outer ring edge of the top surface is more than 15 cm, and the included angle between the top surface of the bearing ring body 400 and the horizontal ground is 8-15 degrees; the diameter of the inner ring of the annular grinding disc 310 is smaller than that of the bearing ring 400;
an annular groove is formed in the top surface of the bearing ring body 400 near the inner wall of the shell 100, and is used for positioning the screen assembly 500;
The screen assembly 500 is used for sieving powder, and comprises an annular outer frame 510 and a sieving soft plate 520; the annular outer frame 510 is a hard ring body and plays a role in bearing, positioning and sieving the soft board 520; the sieving soft plate 520 is an upward convex spherical metal plate, the edge is annular and the whole is approximately disc-shaped, and the thickness is less than 3 mm; the material of the sieving soft plate 520 is preferably stainless steel; the height is 0.1 to 0.15 times of the diameter of the steel plate in normal state; the edge of the sieving soft plate 520 is fixed on the inner ring of the annular outer frame 510;
the annular outer frame 510 is matched with the annular groove and can be nested into the annular groove, and after the annular outer frame 510 is nested into the annular groove, the edge of the sieving soft plate 520 abuts against the bearing ring body 400;
The sieving soft plate 520 comprises a sieving area and a grinding area, wherein the sieving area is round and is arranged near the center of the sieving soft plate 520, and occupies more than two thirds of the total area of the sieving soft plate 520, and sieve holes are densely distributed in the sieving area; the grinding area is in a circular ring shape and is used for contacting with the annular grinding disc 310 and the bearing ring body 400;
When the sieving soft plate 520 is forced to be concave, the whole is disc-shaped, and the bottom of the sieving soft plate 520 is propped against the bearing ring body 400;
The plate body shaping component is used for applying an acting force on the sieving soft plate 520 in a pulling mode to deform the sieving soft plate so as to convert the sieving soft plate from an upward convex state to a downward concave state; the plate body shaping assembly comprises a bearing frame 610 and a pulling assembly 620; the bearing frame 610 is in a shape of a rod or a plate, is transversely arranged and fixed on the inner wall of the shell 100, and is positioned at the bottom of the bearing ring 400; the pulling assembly 620 has a winding structure and comprises a winding drum 621 and a pulling rope 622, wherein the winding drum 621 is fixed on the bearing frame 610; one end of the pulling rope 622 is positioned on the winding drum, and the other end is fixed at the center of the sieving soft plate 520;
the vibration sieving component is used for impacting the vibration concave sieving soft board 520 so as to accelerate powder selection, and the main body is of a motor structure.
The power assembly is used for providing power for the operation of each component of the preparation equipment, and the control unit plays a role in controlling the coordinated operation of each component of the preparation equipment, which are all in the prior art and are not described herein.
Preferably, the control unit is a combination of a programmable logic controller and a control key.
The preparation equipment of the application is practically used:
1. Firstly, controlling the plate body shaping assembly to operate, pulling and sieving the soft plate 520 to enable the soft plate to be concave;
2. The feeding pipe 111 is controlled to feed raw materials into the shell 100, and the raw materials are automatically collected to a position, close to the middle, of the sieving soft plate 520 under the influence of dead weight; meanwhile, controlling the vibration sieving assembly to run for accelerating sieving;
3. The control panel body shaping assembly operates to restore the upper convexity of the screened soft board 520; particulate matter that fails to screen during the upward projection process will collect directly under the annular grinding pan 310; during deformation of the sieving soft plate 520, most of the particles blocked in the sieve holes are discharged;
4. The annular grinding disc 310 is controlled to be pressed downwards and rotated to grind the particles on the sieving soft plate 520; the annular abrasive disk 310 is then raised;
5. the control panel body shaping assembly operates to pull the sieving soft plate 520 to enable the sieving soft plate 520 to be concave, and particles on the sieving soft plate 520 can move into a sieving area under the dead weight;
6. steps 1 to 5 are repeated.
Further, the vibration sieving assembly includes a support body 710 and a vibration motor 720, where the support body 710 is in a rod shape or a plate shape, is transversely disposed and fixed on the inner wall of the housing 100, and is located at the bottom of the bearing ring 400; the oscillating motor 720 is fixed at the top of the bracket body 710, and a cam is positioned on the output shaft; when the screen soft plate 520 is concave, the cam is abutted against the lower surface of the screen soft plate 520.
Preferably, the fixing point of the sieving soft plate 520 on the annular outer frame 510 is lower than the top surface of the annular outer frame 510 by more than 2 cm, and the edge of the sieving soft plate 520 abuts against the bearing ring body 400; the sliding tendency of the particles on the top of the screen soft plate 520 when it protrudes upward is prevented by the annular outer frame 510; the diameter of the outer ring of the bottom surface of the annular grinding disc 310 is smaller than or equal to the diameter of the inner ring of the annular outer frame 510, and the annular outer frame 510 is not extruded when the annular grinding disc is pressed down.
Preferably, the fixing point of the sieving soft plate 520 on the annular outer frame 510 is located on the inner edge of the top surface of the annular outer frame 510 and abuts against the bearing ring 400; the diameter of the outer ring of the bottom surface of the annular grinding disc 310 is smaller than or equal to the diameter of the outer ring of the annular outer frame 510.
Preferably, the fixing point of the sieving soft plate 520 on the annular outer frame 510 is located on the edge of the top surface outer ring of the annular outer frame 510 and abuts against the bearing ring 400; the diameter of the outer ring of the bottom surface of the annular grinding disc 310 is smaller than or equal to the diameter of the outer ring of the annular outer frame 510.
Preferably, the sieving area and the grinding area of the sieving soft plate 520 are different in material.
Preferably, the annular outer frame 510 is detachably fixed on the inner wall of the housing 100, and a positioning hole 521 is provided at the center of the sieving soft plate 520; the top of the pulling rope 622 is detachably fixed on the positioning hole 521; as shown in fig. 7, a side door 150 for removing the screen assembly 500 to be replaced is provided on the outer wall of the housing 100.
Furthermore, an annular positioning groove 511 is formed on the side surface of the annular outer frame 510, and the longitudinal section of the positioning groove 511 is 匚 -shaped; a plurality of positioning fixing pins 140 are fixed to the side wall of the housing 100, the positioning fixing pins 140 are electric pins, and when the positioning fixing pins 140 are extended, the positioning slots 511 are inserted to fix the annular outer frame 510.
Preferably, the upper cover 110 is positioned with a gas injection nozzle 112, and the gas injection nozzle 112 is communicated with a gas pump for injecting gas into the inner space of the housing 100; after the equipment stops selecting powder and grinding, the gas injection nozzle 112 is controlled to inject gas into the inner space of the shell 100 so as to assist in cleaning and dredging the sieve holes.
Further, the gas injection nozzle 112 is an electric multi-directional nozzle, and can change the direction of the gas injection under the control of the control unit.
Preferably, a plurality of inclined rubber wheels are positioned on the inner ring at the bottom of the annular grinding disc 310, and the presence of the wheels serves to reduce friction and thus damage to the sieving soft plates 520.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
The technical problems of low red mud utilization rate, poor economic benefit during utilization, difficulty in full recycling, large occupied land resource amount and small treatment capacity during application in the prior art are solved, and the technical effects of relatively high red mud utilization rate, relatively good economic benefit after treatment, relatively large treatment capacity during application, energy conservation and environmental protection are realized;
the prepared material finished product has better compression resistance, flexural strength and fire resistance.
Example two
In order to improve the dredging effect of the screened soft board 520, the embodiment of the application is optimized and improved on the basis of the preparation equipment of the embodiment and is additionally provided with a jacking column 730; the method comprises the following steps:
As shown in fig. 6, the jacking column 730 is a longitudinally arranged electric telescopic rod structure, and the bottom is fixed on the bracket body 710;
an insertion positioning column 623 is positioned on the positioning hole 521, the insertion positioning column 623 is cylindrical and penetrates the positioning hole 521; the top of the pulling rope 622 is fixed at the bottom of the insertion positioning column 623; a plurality of fixing pins are positioned on the side wall of the inserted positioning column 623, the fixing pins are electric pin bodies controlled by a control unit, when the fixing pins extend, the inserted positioning column 623 is fixed on the positioning holes 521 (two pins respectively positioned above and below the sieving soft board 520 extend at the same time to limit the relative movement of the sieving soft board 520 and the inserted positioning column 623);
After the equipment stops selecting powder and grinding, the positioning fixing pin 140 is controlled to shrink, then the winding drum 621 is controlled to rotate and the jacking cylinder 730 is controlled to stretch, so that the screen assembly 500 is jacked by more than 10 cm; thereafter, the jacking cylinders 730 are controlled to quickly retract so that the screen assembly 500 falls down to thereby dislodge particulate matter within its openings.
Example III
In order to further improve the practicability of the preparation device of the application and facilitate the replacement (changing the screen mesh) of the screen assembly 500, the embodiment of the application adds a replacement auxiliary assembly based on the embodiment, specifically:
as shown in fig. 8 to 11, the replacement auxiliary assembly includes a container plate 810 and a displacement assembly 820;
The container plate 810 is a rectangular block-shaped plate body with a hollow interior, and is horizontally arranged, and the bottom plane is higher than the top of the bearing ring body 400 by more than 10 cm; the container plate 810 is provided with a through hole 811; the through hole 811 is a longitudinally arranged through hole;
the housing 100 includes an upper housing and a lower housing, both of which are tubular; the bottom of the upper housing is fixed on the top edge of the through hole 811, and the top of the lower housing is fixed on the bottom edge of the through hole 811; the inner space of the case 100 communicates with the inner space of the container plate 810;
The bottom of the container plate 810 is provided with an outlet 812, the distance between the outlet 812 and the housing 100 is greater than 10 cm, and the length direction of the connecting line between the outlet 812 and the axis of the housing 100 is the same as the length direction of the container plate 810;
the diameter of the outlet 812 is greater than the diameter of the annular outer frame 510 for facilitating removal of the screen assembly 500; a take-out cover plate 813 is detachably positioned on the take-out opening 812;
The displacement assembly 820 is used for assisting the movement of the screen assembly 500, is positioned inside the container plate 810, and comprises a winding and unwinding roller 821, a bearing positioning rope 822 and a positioning sheet 823; the two winding and unwinding drums 821 are of cylindrical roller structures, rotate under the synergistic effect of the control unit and the power assembly, and are transversely arranged and respectively close to two ends of the container plate 810; the bearing positioning ropes 822 are rope bodies, the number of the bearing positioning ropes is two, the bearing positioning ropes are arranged in parallel, and the distance between the bearing positioning ropes is larger than the diameter of the annular grinding disc 310; the two ends of the bearing positioning rope 822 are respectively wound and positioned on the two winding and unwinding drums 821; the positioning sheets 823 are rectangular cloth sheets, the number of the positioning sheets is one, the length of the positioning sheets 823 is smaller than 1.5 times of the diameter of the screen assembly 500, and two edges of the positioning sheets 823 are positioned on the two bearing positioning ropes 822 respectively; the positioning plate 823 is provided with a bearing positioning hole 824, the bearing positioning hole 824 is a through hole, an annular sheet-shaped rubber ring is fixed on the inner ring, the inner diameter of the rubber ring is smaller than the diameter of the annular outer frame 510 by 1-2 cm, and the outer diameter of the rubber ring is larger than the diameter of the annular outer frame 510 by 1-2 cm;
The top of the jacking column 730 is provided with a bearing hole, the bearing hole is a longitudinally arranged through hole, and the inner diameter of the bearing hole is smaller than the maximum diameter of the inserted positioning column 623; the bearing hole is coaxial with the positioning hole 521 of the screen assembly 500 fixed on the inner wall of the housing 100; the pulling rope 622 penetrates through the bearing hole, and the inserted positioning column 623 is separated from the positioning hole 521 and then is arranged on the bearing hole;
When the equipment stops powder selecting and grinding and needs to replace the screen assembly 500, the shifting assembly 820 is controlled to operate so that the positioning plate 823 moves to be right above the screen assembly 500; the positioning fixing pin 140 is controlled to shrink, then the winding drum 621 is controlled to rotate and the jacking cylinder 730 is controlled to stretch, so that the screen assembly 500 is jacked up to be embedded into the positioning sheet 823; controlling the shrinkage of the fixing pin inserted into the positioning column 623; controlling the jacking cylinders 730 to shorten; controlling the displacement assembly 820 to operate so that the positioning plate 823 moves to be right above the take-out opening 812, and taking out the screen assembly 500 from the take-out opening 812 and replacing the screen assembly 500 with a new one; the control shift assembly 820 is then controlled to operate so that the splines 823 move directly over the screen assembly 500; thereafter controlling the rotation of the spool 621 and controlling the extension of the lifting cylinder 730 will cause the insertion positioning cylinder 623 to insert the newly placed screen assembly 500; controlling the rotation of the spool 621 and the shortening of the jacking cylinders 730 such that a newly replaced screen assembly 500 is inserted into the annular recess; finally, the positioning and fixing pins 140 are controlled to fix the newly replaced screen assembly 500.
Preferably, a curtain 814 is provided between the upper and lower housings, the curtain 814 being a ring-shaped cloth for reducing the amount of particulate matter entering the interior space of the container plate 810.
Example IV
In order to further reduce the labor intensity of replacing the screen assembly 500, improve the replacement efficiency and reduce the manual participation, so that the preparation equipment has the function of automatically replacing the screen assembly 500, the embodiment of the application further optimizes and improves the structure of the auxiliary replacement assembly on the basis of the embodiment, and specifically comprises the following steps:
as shown in fig. 12 and 13, the length of the container plate 810 is 3 times or more the diameter of the housing 100, and the lengths of the container plates 810 positioned at both sides of the housing 100 are the same or similar;
the number of the taking-out openings 812 is two, the taking-out openings 812 are respectively positioned at two sides of the shell 100 and at the top of the container plate 810, and the taking-out cover plate 813 is arranged on each taking-out opening 812;
The withdrawing cover plate 813 is fixed with an abutting telescopic rod 830, and the wall of the container plate 810 positioned at the bottom of the withdrawing cover plate 813 is also fixed with an abutting telescopic rod 830; the number of the abutting telescopic rods 830 is 4, and the abutting telescopic rods are longitudinally arranged and are all electric telescopic rods, and extend to the inner space of the container plate 810 when the abutting telescopic rods extend under the control of the control unit;
for convenience of description, the two abutting telescoping rods 830 disposed one above the other near one side of the container plate 810 are defined herein as a first upper rod and a first lower rod, respectively, and the two abutting telescoping rods 830 disposed one above the other near the other side of the container plate 810 are defined herein as a second upper rod and a second lower rod, respectively;
a plurality of screen assemblies 500 are placed in the manufacturing apparatus;
A plurality of screen assemblies 500 are stacked between the first upper and lower bars, and a plurality of screen assemblies 500 are stacked between the second upper and lower bars; load-bearing positioning cords 822 are positioned over a plurality of screen assemblies 500 stacked together;
When the screen assembly 500 to be replaced can be moved to the position between the abutting telescopic rods 830 by utilizing the shifting assembly 820, the screen assembly 500 is separated from the positioning plate 823 by controlling the first upper rod or the second upper rod to stretch, the screen assembly 500 positioned at the topmost part of the stack can be positioned on the positioning plate 823 by controlling the first lower rod or the second lower rod to stretch, and then any transposition of the screen assembly 500 can be realized by utilizing the matching of the shifting assembly 820 and the abutting telescopic rods 830, so that the required screen assembly 500 is replaced to the upper part of the bearing ring body 400.
Preferably, as shown in fig. 14, in order to facilitate stacking (to avoid toppling) and transferring of the screen assembly 500, the annular outer frame 510 is positioned with one or more positioning magnets 512, and the positioning magnets 512 are permanent magnets.
Preferably, permanent magnets corresponding to the positioning magnets 512 are also disposed in the annular recess.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A preparation device for selecting powder, comprising a housing (100), characterized in that: the vibrating screen comprises a screen body, a grinding disc assembly, a supporting ring body (400), a screen assembly (500), a plate body shaping assembly and a vibrating screen assembly, wherein the vibrating screen assembly is characterized by further comprising a telescopic rotating assembly (200), the grinding disc assembly, a supporting ring body (400), a screen assembly, a plate body shaping assembly and a vibrating screen assembly, wherein a main body of the vibrating screen assembly is a motor; the shell (100) is cylindrical, the top of the shell is provided with an upper cover (110), and a feeding pipe (111) is arranged on the upper cover (110);
The telescopic rotating assembly (200) is an electric telescopic rod, and the top of the telescopic rotating assembly is rotatably connected with the bottom of the upper cover (110);
The grinding disc assembly comprises an annular grinding disc (310), and the annular grinding disc (310) is fixed at the bottom of the telescopic rotating assembly (200) through a bearing bracket (320);
The bearing ring body (400) is fixed on the inner wall of the shell (100), is horizontally arranged, has an annular inclined plane on the top surface, is matched with the bottom surface of the annular grinding disc (310), and has a relatively higher part close to the inner wall of the shell (100) and a relatively lower part far away from the inner wall of the shell (100);
The screen assembly (500) includes an annular outer frame (510) and a sieving soft plate (520); the sieving soft plate (520) is a convex spherical metal plate, and the edge of the sieving soft plate is annular; the height of the sieving soft plate (520) is 0.1 to 0.15 times of the diameter of the sieving soft plate in a normal state, and the edge of the sieving soft plate is fixed on the inner ring of the annular outer frame (510);
A sieve hole is arranged on the sieving soft plate (520) near the center;
when the sieving soft plate (520) is stressed to be concave, the bottom of the sieving soft plate (520) is abutted against the bearing ring body (400);
the plate body shaping assembly is used for applying acting force on the sieving soft plate (520) in a pulling mode to deform the sieving soft plate so as to convert the sieving soft plate from an upward convex state to a downward concave state;
the plate body shaping assembly comprises a bearing frame (610) and a pulling assembly (620);
the bearing frame (610) is in a rod shape or a plate shape, is transversely arranged and fixed on the inner wall of the shell (100) and is positioned at the bottom of the bearing ring body (400);
The pulling assembly (620) is of a hoisting structure and comprises a winding drum (621) and a pulling rope (622), and the winding drum (621) is fixed on the bearing frame (610);
one end of the pulling rope (622) is positioned on the winding drum, and the other end of the pulling rope is fixed at the center of the sieving soft board (520);
The distance between the inner ring edge of the top surface of the bearing ring body (400) and the outer ring edge of the top surface is more than 15 cm, and the included angle between the top surface of the bearing ring body (400) and the horizontal ground is 8-15 degrees; the diameter of the inner ring of the annular grinding disc (310) is smaller than that of the inner ring of the bearing ring body (400); the top surface of the bearing ring body (400) is provided with an annular groove at a position close to the inner wall of the shell (100);
Also comprises a jacking cylinder (730);
The jacking column body (730) is of a longitudinally arranged electric telescopic rod structure, and the bottom of the jacking column body is fixed on the bracket body (710);
An inserting positioning column (623) is positioned on the positioning hole (521), the inserting positioning column (623) is cylindrical and penetrates the positioning hole (521);
The top of the pulling rope (622) is fixed at the bottom of the inserted positioning column (623); a plurality of fixing pins are positioned on the side wall of the inserted positioning column (623), the fixing pins are electric pin bodies controlled by a control unit, and the inserted positioning column (623) is fixed on the positioning hole (521) when the fixing pins extend;
also comprises a replacement auxiliary component;
The replacement assistance assembly includes a container plate (810) and a displacement assembly (820);
the container plate (810) is a rectangular block-shaped plate body with a hollow inside and is horizontally arranged, and a through hole (811) is formed in the container plate;
the container plate (810) is sleeved and positioned on the shell (100);
the bottom of the container plate (810) is provided with a take-out opening (812), and a take-out cover plate (813) is detachably positioned on the take-out opening (812);
the displacement assembly (820) is positioned inside the container plate (810) and comprises a winding and unwinding roller (821), a bearing positioning rope (822) and a positioning sheet (823);
the two winding and unwinding drums (821) are transversely arranged and are respectively arranged close to two ends of the container plate (810);
the number of the bearing positioning ropes (822) is two and the two bearing positioning ropes are parallel to each other, and the distance between the two bearing positioning ropes is larger than the diameter of the annular grinding disc (310);
two ends of the bearing positioning rope (822) are respectively wound and positioned on the two winding and unwinding drums (821);
The positioning sheets (823) are rectangular cloth sheets, the number of the positioning sheets is one, the length of the positioning sheets is smaller than 1.5 times of the diameter of the screen assembly (500), and two edges of the positioning sheets (823) are positioned on the two bearing positioning ropes (822) respectively;
the positioning sheet (823) is provided with a bearing positioning hole (824), and an annular sheet-shaped rubber ring is fixed on the inner ring of the bearing positioning hole (824);
the top of the jacking cylinder (730) is provided with a bearing hole;
The pulling rope (622) penetrates through the bearing hole, and the inserted positioning column (623) is positioned on the bearing hole after being separated from the positioning hole (521).
2. The manufacturing apparatus according to claim 1, wherein: the fixed point of the sieving soft plate (520) on the annular outer frame (510) is lower than the top surface of the annular outer frame (510) by more than 2 cm, and the edge of the sieving soft plate (520) is abutted against the bearing ring body (400);
the sliding trend of the particles at the top of the sieving soft plate (520) is prevented by the annular outer frame (510) when the sieving soft plate is protruded upwards;
The diameter of the outer ring of the bottom surface of the annular grinding disc (310) is smaller than or equal to the diameter of the inner ring of the annular outer frame (510), and the annular outer frame (510) is not extruded when the annular grinding disc is pressed down.
3. The manufacturing apparatus according to claim 1, wherein: the length of the container plate (810) is more than 3 times of the diameter of the shell (100);
the number of the taking-out openings (812) is two, the taking-out openings are respectively positioned at two sides of the shell (100) and at the top of the container plate (810), and the taking-out cover plates (813) are arranged on the taking-out openings (812);
The withdrawing cover plate (813) is fixedly provided with an abutting telescopic rod (830), and the wall of the container plate (810) positioned at the bottom of the withdrawing cover plate (813) is fixedly provided with an abutting telescopic rod (830);
4 abutting telescopic rods (830) are longitudinally arranged and are electric telescopic rods;
The two abutting telescopic rods (830) which are arranged one above the other and are close to one side of the container plate (810) are respectively a first upper rod and a first lower rod, and the two abutting telescopic rods which are arranged one above the other and are positioned on the other side of the container plate (810) are respectively a second upper rod and a second lower rod;
A plurality of screen assemblies (500) are placed in the preparation apparatus;
A plurality of screen assemblies (500) are stacked between the first upper bar and the first lower bar, and a plurality of screen assemblies (500) are stacked between the second upper bar and the second lower bar;
Load-bearing registration cords (822) are positioned over a plurality of screen assemblies (500) stacked together.
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| CN104071997A (en) * | 2014-07-15 | 2014-10-01 | 尹小林 | Method for comprehensive utilization of red mud, phosphogypsum and coal gangue |
| CN212348953U (en) * | 2020-03-12 | 2021-01-15 | 许玉涛 | Chemical raw material grinding device for chemical industry |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4216638C1 (en) * | 1992-05-20 | 1993-09-16 | Daimler-Benz Aktiengesellschaft, 70567 Stuttgart, De | |
| CN109704715A (en) * | 2019-01-23 | 2019-05-03 | 昆明理工大学 | A kind of method that red mud cooperates with stable curing with ardealite |
| CN116159628B (en) * | 2023-02-24 | 2023-10-03 | 中材高新江苏硅材料有限公司 | Quartz powder grinding device |
| CN116371542A (en) * | 2023-05-23 | 2023-07-04 | 冯雪 | Activated carbon preparation grinding device for sewage treatment and application method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104071997A (en) * | 2014-07-15 | 2014-10-01 | 尹小林 | Method for comprehensive utilization of red mud, phosphogypsum and coal gangue |
| CN212348953U (en) * | 2020-03-12 | 2021-01-15 | 许玉涛 | Chemical raw material grinding device for chemical industry |
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