CN112239210A - Dry enrichment and purification method of montmorillonite - Google Patents
Dry enrichment and purification method of montmorillonite Download PDFInfo
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- CN112239210A CN112239210A CN202011169677.XA CN202011169677A CN112239210A CN 112239210 A CN112239210 A CN 112239210A CN 202011169677 A CN202011169677 A CN 202011169677A CN 112239210 A CN112239210 A CN 112239210A
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- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 229910052901 montmorillonite Inorganic materials 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000000746 purification Methods 0.000 title claims abstract description 24
- 238000001035 drying Methods 0.000 claims abstract description 74
- 238000000926 separation method Methods 0.000 claims abstract description 15
- 238000000227 grinding Methods 0.000 claims abstract description 13
- 238000007885 magnetic separation Methods 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 31
- 239000002245 particle Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 18
- 229910000278 bentonite Inorganic materials 0.000 claims description 16
- 239000000440 bentonite Substances 0.000 claims description 16
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 16
- 239000012535 impurity Substances 0.000 claims description 15
- 230000005484 gravity Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 239000010453 quartz Substances 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 229910021532 Calcite Inorganic materials 0.000 claims description 5
- 239000010433 feldspar Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 239000012780 transparent material Substances 0.000 claims description 3
- 238000007791 dehumidification Methods 0.000 claims 2
- 238000007599 discharging Methods 0.000 description 3
- 201000010001 Silicosis Diseases 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229940125714 antidiarrheal agent Drugs 0.000 description 1
- 239000003793 antidiarrheal agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005341 cation exchange Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- -1 metallurgy Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/36—Silicates having base-exchange properties but not having molecular sieve properties
- C01B33/38—Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type
- C01B33/40—Clays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
- B08B15/002—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using a central suction system, e.g. for collecting exhaust gases in workshops
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/22—Controlling the drying process in dependence on liquid content of solid materials or objects
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a method for enriching and purifying montmorillonite by a dry method, which is realized by the steps of raw ore selection, raw ore drying, crushing, negative pressure enrichment, color separation, magnetic separation, grinding, air separation and the like. The method can realize effective enrichment of the montmorillonite, improve the yield in the purification process of the montmorillonite and effectively improve the purity of the montmorillonite.
Description
Technical Field
The invention relates to a method for purifying montmorillonite, in particular to a method for enriching and purifying montmorillonite by a dry method, and belongs to the technical field of purification of montmorillonite.
Background
Montmorillonite is the main component of bentonite, which has excellent physicochemical properties, such as: water-swelling property, adsorptivity, dispersion suspension property, cation exchange property, cohesiveness and the like, has wide application in the fields of building materials, metallurgy, petroleum, chemical industry, medicine, food and the like, and is commonly used as a mold remover, an antidiarrheal agent, an adhesive and the like in the feed industry. Montmorillonite has wide application and has important significance in researching purification.
The existing common montmorillonite purification method is a physical purification method, and comprises wet purification and dry purification, wherein the wet purification is to utilize the characteristics of montmorillonite such as water absorption expansibility, dispersion suspensibility, ion exchange property and the like, break bentonite, add the bentonite into water to prepare slurry and purify the slurry, a large amount of water is consumed in the process, and the water content of a filter cake after filtration reaches about 60 percent and is difficult to dry; the dry purification is to dry the raw ore naturally, then to crush, air flow dry, grind, dry by winnowing and grade, pack and so on, the dry purification is mainly to the higher grade (the montmorillonite content is greater than 80%), the fine grain vein mineral quartz, calcite, feldspar and so on the coarse raw ore, and the content is lower than 80% of the medium and low grade bentonite resource, mainly to adopt the wet purification technology.
In the prior art, dry purification is performed according to the difference of hardness and density after two drying and two crushing processes, and ores including all impurities are treated before air separation, so that the production cost is greatly increased, and especially for raw ores with the montmorillonite content lower than 80%, unnecessary waste is caused, and the purification effect is poor. In addition, the dry process has the disadvantages of high dust pollution and easy silicosis caused by quartz in the bentonite.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a montmorillonite dry-method enrichment and purification method with more reasonable design.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for enriching and purifying montmorillonite by a dry method is characterized by comprising the following steps:
(1) selecting raw ores: selecting bentonite raw ore with montmorillonite content of 75-80% and obvious color difference;
(2) drying raw ore: drying the raw ore by a sunlight drying room until the water content is lower than 9%, and collecting dust generated in the drying process by a negative pressure dust removal system;
(3) crushing: conveying the dried raw ore to a crusher under a sealed condition, and crushing the raw ore in the crusher until the particle size is 5-10 cm;
(4) and (3) negative pressure enrichment: the crusher is also connected and communicated with a negative pressure dust removal system through a pipeline and a valve, and is used for adsorbing dust on the surface of crushed raw ore through negative pressure and collecting the dust;
(5) color selection: feeding the raw ore particles subjected to negative pressure enrichment into a color separation device for color separation under the action of gravity through a closed pipeline, and removing part of impurity particles such as quartz, calcite and feldspar in the bentonite ore;
(6) magnetic separation: sending the target particles subjected to color separation into magnetic separation equipment for magnetic separation under the action of gravity through a closed pipeline, and removing metal impurities;
(7) grinding: sending the magnetically-separated ore particles into grinding equipment for grinding to a target granularity of 400-600 meshes under the action of gravity through a closed pipeline;
(8) winnowing: and classifying the ground materials by using an airflow classifier according to a conventional mode, and further removing impurities.
Furthermore, the sunlight drying room is fixed on a horizontal ground, is integrally rectangular and comprises a roof and four walls made of transparent materials, wherein an opening in one wall is used for installing an electric shutter door, a plurality of dehumidifying and exhausting devices are fixed on the left side wall and the right side wall of the drying room, each dehumidifying and exhausting device comprises a dehumidifying and exhausting fan, a plurality of branch pipes and a negative pressure pipeline, the dehumidifying and exhausting fan is fixed in a mounting hole reserved in advance on the side wall of the drying room, a branch pipe is fixed on the peripheral wall of each mounting hole, the branch pipes surround the outside of the dehumidifying and exhausting fan, the plurality of branch pipes on each side wall of the drying room are finally collected on the same negative pressure pipeline, two negative pressure pipelines are finally collected on the same header pipe, and the header pipe is fixedly connected to an air inlet of a negative pressure dust removal system; two discharge chutes with closed tops are arranged on the ground in the drying room, a discharge auger is arranged in each discharge chute, an opening is arranged at the top of one end of each discharge chute, an electric flap valve for closing the opening is fixed at the opening, material concentration chutes with closed tops are fixed at positions outside the drying room and below the end part of the other end corresponding to each discharge chute, and material lifting augers are fixedly connected in each material concentration chute; and a temperature sensor and a humidity sensor are fixed on one side wall of the drying room.
Furthermore, a shoveling plate is fixed above the ground in the drying room, the width of the shoveling plate is adapted to the width of the drying room, two vertical guide rails which are oppositely arranged are fixedly embedded on the left side wall and the right side wall which are in the drying room and correspond to the upper part of the discharge end of the discharge chute, two transverse slide rails which are oppositely arranged are also fixedly embedded on the left side wall and the right side wall in the drying room, the bottom of the vertical guide rail on the left side wall or the right side wall in the drying room is communicated with one end of the corresponding transverse slide rail, and the vertical guide rail and the transverse slide rail are connected into a whole and then are in a horizontal L shape; a fixed strip is welded and fixed at the top of the shoveling plate, and two ends of the fixed strip are provided with sliding blocks which are in sliding fit with the corresponding lateral transverse sliding rail and the vertical guide rail; the telescopic link that has the lift cylinder at the top welded fastening of shovel flitch, and the lift cylinder is fixed in the bottom that removes the seat, remove seat central point and put and offer supply the lead screw pass and with lead screw thread fit's screw hole, it locates at the left side in screw hole on removing the seat, the guide hole with screw hole parallel arrangement respectively is seted up to the right side, wherein lead screw one end is passed through the bearing frame and is fixed on the front side of roof, the other end passes through the bearing frame and fixes the rear side at the roof and has the rotating electrical machines at the end fixing, on the left side of lead screw, the right side respectively parallel is provided with a horizontal guide post, every horizontal guide post passes and both ends welded fastening is on the inboard corresponding position of lateral wall around the drying chamber in the guide hole that corresponds.
Further, the shoveling plate is arc-shaped, the bottom of the shoveling plate is fixedly provided with a rubber block through a bolt, and the rubber block is in contact with the ground when the shoveling plate slides on the transverse sliding rail.
Further, the color selection step is repeated for 2-3 times.
Compared with the prior art, the invention has the beneficial effects that:
(1) by the method, the effective enrichment of the montmorillonite can be realized, and the yield in the purification process of the montmorillonite is improved;
(2) the control of the raw materials and the control of the crushing granularity are convenient for subsequent color sorting, and the color sorting effect is improved;
(3) by the method, the purity of the montmorillonite can be effectively improved (up to 99 percent);
(4) by the method, dust leakage in the purification process of the montmorillonite can be effectively avoided, silicosis is avoided, the working environment of workers is optimized, and the physical health of the workers is ensured;
(5) the method can effectively reduce the purification production cost (compared with the prior dry purification, the cost can be reduced by about 10 percent).
Drawings
FIG. 1 is a schematic structural view of the connection between a solar drying room and a negative pressure dust removal system according to the present invention
FIG. 2 is a schematic view of the structure of the sunlight drying room of the present invention without the negative pressure pipeline, the electric rolling gate, etc
FIG. 3 is a top view of the structure of the present invention with the top of the discharge chute removed from the room
FIG. 4 is a top view of a floor structure in a solar drying room without the top of a discharge chute of the present invention
FIG. 5 is a bottom view of the lifting cylinder, the movable base, the lead screw, the transverse guide post and other structures of the present invention
FIG. 6 is a schematic structural view of a scraper plate according to the present invention;
the device comprises a drying room 1, a roof 1.1, a horizontal ground 2, a horizontal ground 3, an electric rolling gate 4, a dehumidifying exhaust fan 5, a negative pressure pipeline 6, a negative pressure dust removal system 7, a discharge chute 8, a discharge auger 9, an electric flap valve 10, a material concentration tank 11, an electric appliance control cabinet 12, a shoveling plate 13, a vertical guide rail 14, a transverse slide rail 15, a fixing strip 16, a lifting cylinder 17, a moving seat 18, a lead screw 19, a rotating motor 20, a transverse guide column 21 and a rubber block.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. The following are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any equivalent or similar substitutes should fall within the scope of protection of the present application without departing from the inventive concept. And the details which are not described below should be performed according to the prior art or the conventional techniques in the field.
As shown in figures 1-6, the sunlight drying room of the invention is fixed on a horizontal ground 2, the whole drying room 1 is cuboid, comprises a roof 1.1 and four walls made of transparent materials, one wall (front side wall) is provided with an opening for installing an electric rolling gate 3, a plurality of dehumidifying and exhausting devices are fixed on the left side wall and the right side wall of the drying room 1, each dehumidifying and exhausting device comprises a dehumidifying and exhausting fan 4, a plurality of branch pipes and a negative pressure pipeline 5, the dehumidifying and exhausting fan 4 is fixed in a mounting hole reserved in advance on the side wall of the drying room 1, a branch pipe is fixed on the peripheral wall of each mounting hole, the branch pipes surround the outside of the dehumidifying and exhausting fan 4, a plurality of branch pipes on each side wall of the drying room 1 are finally converged on the same negative pressure pipeline 5, two negative pressure pipelines 5 are finally converged on the same collecting pipe, and the collecting pipe is fixedly connected to an air inlet of the same negative pressure dust removal system 6; two discharge chutes 7 with closed tops are arranged on the ground in the drying room 1, a discharge auger 8 is arranged in each discharge chute 7 according to a conventional mode, an opening is formed in the top of one end of each discharge chute 7, an electric flap valve 9 for closing the opening is fixed at the opening, a material concentration chute 10 with a closed top is fixed outside the drying room 1 and corresponding to the end part of one end of each discharge chute 7, and a material lifting auger is fixedly connected in each material concentration chute 10; an electrical appliance control cabinet 11 is fixed on one side wall of the drying room 1, and a temperature sensor and a humidity sensor are fixed in the drying room 1.
In order to facilitate discharging of ore materials (which are purchased and crushed into raw ore particles with the size of about 20 cm) dried in the drying room from the drying room, a shoveling plate 12 is fixed above the ground in the drying room 1, the width of the shoveling plate 12 is adapted to the width of the drying room 1, two vertical guide rails 13 which are oppositely arranged are embedded and fixed on the left side wall and the right side wall in the drying room 1 and above the discharging end of the discharging groove 7, two transverse slide rails 14 which are oppositely arranged are also embedded and fixed on the left side wall and the right side wall in the drying room 1, the bottoms of the vertical guide rails 13 on the left side wall or the right side wall in the drying room 1 are communicated with one end of the corresponding transverse slide rail 14, and the two are connected into a whole to form a horizontal L shape; a fixed strip 15 is welded and fixed on the top of the shoveling plate 12, and two ends of the fixed strip 15 are both provided with sliders which are in sliding fit with the corresponding lateral sliding rail 14 and the vertical guide rail 13; the top welded fastening of shovel flitch 12 has the telescopic link of lift cylinder 16, and lift cylinder 16 fixes the bottom at a removal seat 17, remove seat 17 central point and put and offer the screw hole that supplies lead screw 18 to pass and with lead screw 18 screw-thread fit, the left side that lies in the screw hole on removing seat 17, the right side respectively offers a guiding hole with screw hole parallel arrangement, wherein lead screw 18 one end is fixed on the front side of roof 1.1 through the bearing frame, the other end passes through the bearing frame to be fixed at the rear side of roof 1.1 and is fixed with rotating electrical machines 19 at the end, left side at lead screw 18, the right side respectively is provided with a horizontal guide post 20 in parallel, every horizontal guide post 20 passes and both ends welded fastening on the inboard corresponding position of lateral wall around drying room 1 from the guiding hole that corresponds.
The shoveling plate 12 is arc-shaped, the bottom of the shoveling plate is fixed with a rubber block 21 through a bolt, and the rubber block 21 is contacted with the ground 2 when the shoveling plate 12 slides on the transverse slide rail 14.
The sunlight drying room 1 is a relatively closed building, bentonite aired in the room is naturally dried by using a sunlight irradiation mode, a dehumidifying and exhausting device is started to dehumidify and exhaust air in the drying room in the sunshine-free weather, and dust is collected by negative pressure dust collection equipment because dust exists on the surface of the bentonite in the drying process, and the dust is basically montmorillonite. Simultaneously bury ejection of compact auger underground in the ground in the drying chamber, after the drying is accomplished, drive shovel flitch 12 through lift cylinder 16 and descend to horizontal slide rail high position department, the rotating electrical machines drives shovel flitch 12 and moves forward to make shovel flitch 12 pile up the material toward electronic flap valve 9 department, then open electronic flap valve 9, the material falls into the blown down tank in, the drying chamber is sent out to one process down by the material of ejection of compact auger in with the drying chamber, on the breaker promptly, reduce the chance of workman direct contact bentonite, reduce the risk of dust.
Example one
The method for enriching and purifying the montmorillonite by the dry method is realized by the following steps:
(1) selecting raw ores: selecting bentonite raw ore with montmorillonite content of 75-80% and obvious color difference;
(2) drying raw ore: drying the raw ore by a sunlight drying room 1 until the water content is lower than 9%, and collecting dust generated in the drying process by a negative pressure dust removal system 6;
(3) crushing: conveying the dried raw ore to a crusher under a sealed condition, and crushing the raw ore in the crusher until the particle size is 6 cm;
(4) negative pressure impurity removal: the crusher is also connected and communicated with an air inlet of the negative pressure dust removal system 6 through a pipeline and a valve, and the dust on the surface of the crushed raw ore is absorbed through negative pressure and is collected;
(5) color selection: feeding the raw ore particles subjected to negative pressure enrichment into a color separation device for color separation under the action of gravity through a closed pipeline, and removing part of impurity particles such as quartz, calcite and feldspar in the bentonite ore;
(6) magnetic separation: sending the target particles subjected to color separation into magnetic separation equipment for magnetic separation under the action of gravity through a closed pipeline, and removing metal impurities;
(7) primary grinding: sending the magnetically-separated ore particles into grinding equipment through a closed pipeline under the action of gravity for grinding until the target granularity is 600 meshes;
(8) winnowing: and classifying the ground materials by using an airflow classifier according to a conventional mode, and further removing impurities.
The montmorillonite yield of the embodiment reaches more than 89%.
Example two
The method for enriching and purifying the montmorillonite by the dry method is characterized by comprising the following steps of:
(1) selecting raw ores: selecting bentonite raw ore with montmorillonite content of 70-80% and obvious color difference;
(2) drying raw ore: drying the raw ore by a sunlight drying room until the water content is lower than 9%, and collecting dust generated in the drying process by a negative pressure dust removal system;
(3) crushing: conveying the dried raw ore to a crusher under a sealed condition, and crushing the raw ore in the crusher until the particle size is 5 cm;
(4) negative pressure impurity removal: the crusher is also connected and communicated with a negative pressure dust removal system through a pipeline and a valve, and is used for adsorbing dust on the surface of crushed raw ore through negative pressure and collecting the dust;
(5) color selection: feeding the raw ore particles subjected to negative pressure enrichment into a color separation device for color separation under the action of gravity through a closed pipeline, and removing part of impurity particles such as quartz, calcite and feldspar in the bentonite ore;
(6) magnetic separation: sending the target particles subjected to color separation into magnetic separation equipment for magnetic separation under the action of gravity through a closed pipeline, and removing metal impurities;
(7) grinding: sending the magnetically-separated ore particles into grinding equipment through a closed pipeline under the action of gravity for grinding until the target granularity is 400 meshes;
(8) winnowing: and classifying the ground materials by using an airflow classifier according to a conventional mode, and further removing impurities.
The montmorillonite yield of the embodiment reaches more than 92 percent.
Claims (5)
1. A method for enriching and purifying montmorillonite by a dry method is characterized by comprising the following steps:
(1) selecting raw ores: selecting bentonite raw ore with montmorillonite content of 75-80% and obvious color difference;
(2) drying raw ore: drying the raw ore by a sunlight drying room until the water content is lower than 9%, and collecting dust generated in the drying process by a negative pressure dust removal system;
(3) crushing: conveying the dried raw ore to a crusher under a sealed condition, and crushing the raw ore in the crusher until the particle size is 5-10 cm;
(4) and (3) negative pressure enrichment: the crusher is also connected and communicated with a negative pressure dust removal system through a pipeline and a valve, and is used for adsorbing dust on the surface of crushed raw ore through negative pressure and collecting the dust;
(5) color selection: feeding the raw ore particles subjected to negative pressure enrichment into a color separation device for color separation under the action of gravity through a closed pipeline, and removing part of impurity particles such as quartz, calcite and feldspar in the bentonite ore;
(6) magnetic separation: sending the target particles subjected to color separation into magnetic separation equipment for magnetic separation under the action of gravity through a closed pipeline, and removing metal impurities;
(7) grinding: sending the magnetically-separated ore particles into grinding equipment for grinding to a target granularity of 400-600 meshes under the action of gravity through a closed pipeline;
(8) winnowing: and classifying the ground materials by using an airflow classifier according to a conventional mode, and further removing impurities.
2. The dry enrichment and purification method of montmorillonite according to claim 1, wherein the sunlight drying room is fixed on a horizontal ground, has a cuboid shape as a whole, comprises a roof and four walls made of transparent materials, an opening is formed in one wall of the drying room and is used for installing an electric rolling gate, a plurality of dehumidifying and exhausting devices are fixed on the left side wall and the right side wall of the drying room, each dehumidifying and exhausting device comprises a dehumidifying and exhausting fan, a plurality of branch pipes and a negative pressure pipeline, the dehumidification exhaust fan is fixed in a mounting hole reserved in advance on the side wall of the drying room, a branch pipe is fixed on the outer peripheral wall of each mounting hole, the branch pipes surround the exterior of the dehumidification exhaust fan, a plurality of branch pipes on each side wall of the drying room are finally converged on the same negative pressure pipeline, two negative pressure pipelines are finally converged on the same collecting pipe, and the collecting pipe is fixedly connected to an air inlet of a negative pressure dust removal system; two discharge chutes with closed tops are arranged on the ground in the drying room, a discharge auger is arranged in each discharge chute, an opening is arranged at the top of one end of each discharge chute, an electric flap valve for closing the opening is fixed at the opening, material concentration chutes with closed tops are fixed at positions outside the drying room and below the end part of the other end corresponding to each discharge chute, and material lifting augers are fixedly connected in each material concentration chute; and a temperature sensor and a humidity sensor are fixed on one side wall of the drying room.
3. The dry enrichment and purification method of montmorillonite according to claim 2, characterized in that a shoveling plate is fixed above the ground in the drying room, the width of the shoveling plate is adapted to the width of the drying room, two vertical guide rails which are oppositely arranged are embedded and fixed on the left and right side walls in the drying room and above the discharge end of the discharge chute, two transverse slide rails which are oppositely arranged are also embedded and fixed on the left and right side walls in the drying room, the bottom of the vertical guide rail on the left or right side wall in the drying room is communicated with one end of the corresponding transverse slide rail, and the two guide rails are connected into a whole and then are in a horizontal L shape; a fixed strip is welded and fixed at the top of the shoveling plate, and two ends of the fixed strip are provided with sliding blocks which are in sliding fit with the corresponding lateral transverse sliding rail and the vertical guide rail; the telescopic link that has the lift cylinder at the top welded fastening of shovel flitch, and the lift cylinder is fixed in the bottom that removes the seat, remove seat central point and put and offer supply the lead screw pass and with lead screw thread fit's screw hole, it locates at the left side in screw hole on removing the seat, the guide hole with screw hole parallel arrangement respectively is seted up to the right side, wherein lead screw one end is passed through the bearing frame and is fixed on the front side of roof, the other end passes through the bearing frame and fixes the rear side at the roof and has the rotating electrical machines at the end fixing, on the left side of lead screw, the right side respectively parallel is provided with a horizontal guide post, every horizontal guide post passes and both ends welded fastening is on the inboard corresponding position of lateral wall around the drying chamber in the guide hole that corresponds.
4. The dry enrichment and purification method of montmorillonite according to claim 3, wherein the shoveling plate is arc-shaped and the bottom of the shoveling plate is fixed with a rubber block through a bolt, and the rubber block is in contact with the ground when the shoveling plate slides on the transverse slide rail.
5. The dry enrichment and purification method of montmorillonite according to claim 1 or 2 or 3 or 4, characterized in that the above-mentioned color selection step is repeated 2-3 times.
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| CN202011169677.XA CN112239210A (en) | 2020-10-28 | 2020-10-28 | Dry enrichment and purification method of montmorillonite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112978744A (en) * | 2021-02-24 | 2021-06-18 | 赤峰市奇运蒙脱石精细化工有限公司 | Rotary mixing method for bentonite raw material |
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| CN209306495U (en) * | 2019-01-05 | 2019-08-27 | 庄小英 | A kind of grain sunning collection device |
| CN110255574A (en) * | 2019-06-14 | 2019-09-20 | 安吉县宇宏粘土化工有限公司 | A kind of bentonite processing method |
| KR20200048686A (en) * | 2018-10-30 | 2020-05-08 | 김용관 | Manufacturing Method of Multi-functional Powder |
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| CN109269234A (en) * | 2018-07-09 | 2019-01-25 | 铜陵菻科工业石膏综合利用有限责任公司 | Industry by-product gypsum thermal-arrest drying shed |
| KR20200048686A (en) * | 2018-10-30 | 2020-05-08 | 김용관 | Manufacturing Method of Multi-functional Powder |
| CN209306495U (en) * | 2019-01-05 | 2019-08-27 | 庄小英 | A kind of grain sunning collection device |
| CN110255574A (en) * | 2019-06-14 | 2019-09-20 | 安吉县宇宏粘土化工有限公司 | A kind of bentonite processing method |
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| CN112978744A (en) * | 2021-02-24 | 2021-06-18 | 赤峰市奇运蒙脱石精细化工有限公司 | Rotary mixing method for bentonite raw material |
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Application publication date: 20210119 |