CN115215367A - Process for preparing zinc sulfate monohydrate from zinc sulfate heptahydrate - Google Patents
Process for preparing zinc sulfate monohydrate from zinc sulfate heptahydrate Download PDFInfo
- Publication number
- CN115215367A CN115215367A CN202210858102.1A CN202210858102A CN115215367A CN 115215367 A CN115215367 A CN 115215367A CN 202210858102 A CN202210858102 A CN 202210858102A CN 115215367 A CN115215367 A CN 115215367A
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- China
- Prior art keywords
- zinc sulfate
- stirring
- tank body
- ring
- driving
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 28
- 229940118149 zinc sulfate monohydrate Drugs 0.000 title claims abstract description 25
- RNZCSKGULNFAMC-UHFFFAOYSA-L zinc;hydrogen sulfate;hydroxide Chemical compound O.[Zn+2].[O-]S([O-])(=O)=O RNZCSKGULNFAMC-UHFFFAOYSA-L 0.000 title claims abstract description 25
- RZLVQBNCHSJZPX-UHFFFAOYSA-L zinc sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Zn+2].[O-]S([O-])(=O)=O RZLVQBNCHSJZPX-UHFFFAOYSA-L 0.000 title claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 120
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 10
- 238000003825 pressing Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000004321 preservation Methods 0.000 claims abstract description 4
- 239000008213 purified water Substances 0.000 claims abstract description 4
- 239000000725 suspension Substances 0.000 claims abstract description 4
- 230000033001 locomotion Effects 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002440 industrial waste Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G9/00—Compounds of zinc
- C01G9/06—Sulfates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/015—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with flat filtering elements
- B01D33/0158—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/41—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection
- B01D33/42—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in series connection concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Accessories For Mixers (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention provides a process for preparing zinc sulfate monohydrate by using zinc sulfate heptahydrate as a raw material, which relates to the technical field of preparation of zinc sulfate monohydrate, and comprises the following steps: the method comprises the following steps: adding zinc sulfate heptahydrate and purified water into the tank body, and stirring by using a stirring sheet; step two: adding a suspension prepared from ZnO and water into the tank body, stirring for half an hour under heat preservation, heating the solution to eighty ℃ and continuing stirring for ten minutes; step three: adding active carbon and continuing stirring for ten minutes; step four: the stirring pieces are enabled to rotate, so that the stirring pieces are spliced into a round shape, and the material is settled; do not form the ring through telecontrol equipment control stirring piece, and make the stirring piece rotatory to stir inside material, after telecontrol equipment control stirring piece becomes the ring, make the stirring piece go up and down again, solution passes through filtration pore to the upper strata on the stirring piece, and the precipitate is pressed between the stirring piece, thereby carries out the filter-pressing to the material.
Description
Technical Field
The invention relates to the technical field of preparation of zinc sulfate monohydrate, in particular to a process for preparing zinc sulfate monohydrate by using zinc sulfate heptahydrate as a raw material.
Background
With the frequent chemical production activities, the generated industrial waste residues are greatly increased in quantity and variety, the discharge and stockpiling of the industrial waste residues not only occupy a large amount of land, but also the toxic heavy metals cause great pollution and threat to the environment, at present, zinc, cadmium and the like contained in the industrial waste residues increasingly become secondary resources with development and utilization values, and the zinc sulfate monohydrate is widely applied to the fields of feed additives, chemical industry, fertilizers, mineral separation, pharmacy, rubber, electronics, electroplating, viscose fiber and the like.
However, the existing zinc sulfate monohydrate production equipment can only stir and mix in multiple equipment in different steps and filter-press, so that the equipment occupies a large area and cannot be fully used.
Disclosure of Invention
The invention aims to provide a process for preparing zinc sulfate monohydrate by using zinc sulfate heptahydrate as a raw material, and aims to solve the problem that zinc sulfate monohydrate production equipment in the prior art can only stir, mix and filter-press in multiple equipment in a split-step manner.
In order to achieve the purpose, the invention adopts the following technical scheme: the process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material comprises the following steps:
the method comprises the following steps: adding zinc sulfate heptahydrate and purified water into the tank body, and stirring by using a stirring sheet;
step two: adding a suspension prepared from ZnO and water into the tank body, stirring for half an hour under heat preservation, heating the solution to eighty ℃ and continuing stirring for ten minutes;
step three: adding active carbon and continuing stirring for ten minutes;
step four: the stirring pieces are made to rotate, so that the stirring pieces are spliced into a circle, and the material is settled;
step five: starting a motion device to enable the stirring sheet to descend so as to carry out filter pressing, and pumping the solution after filter pressing into a refining zone reaction kettle;
step six: adjusting the pH of the solution by using concentrated sulfuric acid as a reagent, and then starting a vacuum pump to perform reduced pressure evaporation with steam to form a feed liquid;
step seven: discharging the concentrated feed liquid, centrifuging, and drying.
According to a further technical scheme, the process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material adopts production equipment, the production equipment comprises a tank body, at least two stirring blade assemblies are arranged in the tank body, each stirring blade assembly comprises a plurality of stirring blades with the same shape, the stirring blades can be spliced into a circle, the circle is in contact with the inner wall of the tank body, insertion strips and insertion grooves are respectively arranged on two sides of each stirring blade, filtering holes are formed in the stirring blades, a moving device for controlling the stirring blades to move is arranged in the tank body, the moving device is used for controlling the stirring blades to be spliced into a circle, controlling the stirring blades to rotate around the axis of the tank body and controlling the stirring blades to lift, a feeding port is formed in the top of the tank body, a slag discharge valve is arranged at the bottom of the tank body, and a heating device is arranged in the tank body.
In order to enable the invention to have the function of controlling the stirring pieces to be spliced into a ring, the invention has the further technical scheme that the moving device comprises a first bevel gear and a mounting block which are fixedly connected to a connecting shaft at one end of the stirring pieces, the first bevel gear in the same group is meshed with a second bevel gear, the first bevel gear and the second bevel gear are both rotatably mounted in the mounting block, and the moving device also comprises a driving device for driving the second bevel gear to rotate relative to the mounting block.
In order to make the invention have the function of driving the second bevel gears to rotate relative to the mounting block, the invention has the further technical scheme that the driving device comprises a non-circular driving rod penetrating through the axes of all the second bevel gears, the stirring sheet is hinged with a cylindrical block, a plurality of guide rods penetrating through the cylindrical block are installed in the tank body, and the driving device also comprises a driving part for driving the driving rod to rotate.
According to a further technical scheme, the driving part is a motor with an output end fixedly connected with the driving rod, and the motor is fixedly arranged on the tank body.
In order to enable the movement device to have the effects of controlling the circular ring to be spliced or scattered and then enabling the stirring blades to rotate around the axis of the tank body, the movement device further comprises a driving ring which is in rotating connection with the tank body, the guide rod is in rotating connection with the driving ring, a through hole is formed in the center of the driving ring, the driving rod penetrates through the through hole, a convex block is arranged in the through hole, and a stirring block which can be abutted against the convex block is fixedly connected to the driving rod.
According to a further technical scheme, the moving device further comprises a rotating mechanism for driving the guide rod to rotate, and a lifting mechanism for lifting the cylindrical block when the guide rod rotates is installed in the cylindrical block.
In order to enable the invention to have the function of controlling the guide rod to rotate, the invention has the further technical scheme that the rotating mechanism comprises a gear fixedly connected to the top end of the guide rod, the tank body is rotatably connected with a gear ring, the gear ring is meshed with the gear, and a clutch device is arranged on the gear ring and can enable the gear ring to be fixed on the tank body and the driving ring.
In order to enable the lifting mechanism to have the effect of controlling the lifting of the stirring piece, the lifting mechanism comprises a rotating sleeve rotatably connected to a cylindrical block, the guide rod is connected with the rotating sleeve in a sliding mode, the cylindrical block is rotatably connected with a rotating block in a sliding mode, the rotating block is provided with a gear set, a toothed ring meshed with the gear set is fixedly installed in the cylindrical block, the guide rod is provided with a rack meshed with the gear set, and the gear sets in the cylindrical blocks in different heights are different in transmission ratio.
In order to enable the clutch device to have the function of controlling the connection of the gear ring, the tank body and the driving ring, the clutch device comprises a plurality of groups of connecting blocks, two connecting blocks in each group of connecting blocks are symmetrically arranged, the connecting blocks are connected with magnets through springs, slide rods which are in sliding connection with the connecting blocks are fixedly connected onto the magnets, the magnets are in sliding connection with the gear ring, the magnets are in an isosceles trapezoid shape, a control ring is rotatably connected into the gear ring along the circumferential direction of the gear ring, a servo motor is installed on the gear ring, a transmission gear used for driving the control ring to rotate is installed at the output end of the servo motor, three bulges are arranged on the control ring, the three bulges are respectively used for pushing the upper magnets, pushing the lower magnets and simultaneously pushing the upper magnets and the lower magnets, and friction grains are arranged on the corresponding positions of the connecting blocks, the tank body and the driving ring.
The beneficial effects of the invention are:
1. when the device is used, the stirring pieces are controlled by the motion device to not form a circular ring, the stirring pieces are rotated, so that internal materials are stirred, the stirring pieces are lifted after the stirring pieces are controlled by the motion device to form a circular ring, a solution passes through the filtering holes in the stirring pieces to reach the upper layer, and precipitates are pressed between the stirring pieces, so that the materials are subjected to filter pressing.
2. When the automatic stirring device is used, the motor is started to enable the driving rod to rotate, and meanwhile, the stirring pieces are prevented from rotating around the driving rod under the action of the guide rod, so that the second bevel gear drives the first bevel gear to rotate, the stirring pieces rotate automatically, and the stirring pieces in each group are spliced into a circle or are staggered with each other.
3. When the invention is used, when the guide rod rotates, the rotating sleeve rotates along with the guide rod, so that the gear set moves, and the output end of the gear set rotates because the gear ring does not rotate, so that the gear set goes up and down along the rack, and the stirring sheet goes up and down.
4. When the stirring device is used, whether the gear ring is connected with the tank body and the driving ring or not is controlled through the clutch device, so that when the gear ring is connected with the tank body and the driving ring, the driving rod rotates to enable the stirring blades to rotate, when the gear ring is connected with the driving ring and is not connected with the tank body, the stirring blades rotate around the driving rod to stir, and when the gear ring is connected with the tank body and is not connected with the driving ring, the stirring blades are lifted.
Drawings
Fig. 1 is a schematic structural diagram of the inside of an embodiment of the present invention.
Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.
Fig. 3 is a schematic view of the structure inside the cylindrical block in the embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a clutch device in an embodiment of the present invention.
FIG. 5 is a schematic view of a stirring blade assembly according to an embodiment of the present invention.
FIG. 6 is a schematic structural diagram of another aspect of a stirring blade assembly according to an embodiment of the present invention.
Fig. 7 is a schematic structural diagram of an embodiment of the present invention.
In the figure: 1. a tank body; 2. a stirring sheet; 3. a first bevel gear; 4. a second bevel gear; 5. a drive rod; 6. a cylindrical block; 7. a guide bar; 8. a motor; 9. a drive ring; 10. a shifting block; 11. a gear; 12. a ring gear; 13. a rotating sleeve; 14. rotating the block; 15. a gear set; 16. a toothed ring; 17. a rack; 18. connecting blocks; 19. a spring; 20. a magnet; 21. a servo motor; 22. a control loop; 23. a fillet; 24. mounting blocks; 25. a transmission gear; 26. and (4) caulking grooves.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1-7, a process for preparing zinc sulfate monohydrate by using zinc sulfate heptahydrate as a raw material comprises the following steps:
the method comprises the following steps: zinc sulfate heptahydrate and purified water are put into the tank body 1 and stirred by the stirring sheet 2;
step two: adding a suspension prepared from ZnO and water into the tank body 1, stirring for half an hour under heat preservation, heating the solution to eighty ℃ and continuing stirring for ten minutes;
step three: adding active carbon and continuing stirring for ten minutes;
step four: the stirring pieces 2 are enabled to rotate, so that the stirring pieces 2 are spliced into a round shape, and the material is settled;
step five: starting a motion device to enable the stirring sheet 2 to descend so as to carry out filter pressing, and pumping the solution after filter pressing into a refining zone reaction kettle;
step six: adjusting the pH value of the solution by using a reagent concentrated sulfuric acid, and then starting a vacuum pump to perform reduced pressure evaporation with steam to form a feed liquid;
step seven: discharging the concentrated feed liquid, centrifuging, and drying.
The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as a raw material adopts a production device, the production device comprises a tank body 1, at least two stirring blade assemblies are arranged in the tank body 1, the stirring blade assemblies comprise a plurality of stirring blades 2 with the same shape, the stirring blades 2 can be spliced into a circle, the circle is contacted with the inner wall of the tank body 1, two sides of the stirring blades 2 are respectively provided with a fillet 23 and a caulking groove 26, the stirring blades 2 are provided with filter holes, a moving device for controlling the movement of the stirring blades 2 is arranged in the tank body 1, the moving device is used for controlling the stirring blades 2 to be spliced into a ring, the stirring blades 2 are controlled to rotate around the axis of the tank body 1 and control the stirring blades 2 to lift, the top of the tank body 1 is provided with a feeding port, a slag discharge valve is arranged at the bottom of the tank body 1, and a heating device is arranged in the tank body 1.
In this embodiment, do not constitute the ring through telecontrol equipment control stirring piece 2, and make stirring piece 2 rotatory to stir inside material, after the ring is constituteed to telecontrol equipment control stirring piece 2, make stirring piece 2 go up and down again, solution passes through filtration pore to the upper strata on stirring piece 2, and the precipitate is pressed between stirring piece 2, thereby carries out the filter-pressing to the material.
Specifically, the moving device comprises a first bevel gear 3 and a mounting block 24 which are fixedly connected to a connecting shaft at one end of the stirring blade 2, the same group of first bevel gears 3 are engaged with a same second bevel gear 4, the first bevel gear 3 and the second bevel gear 4 are both rotatably mounted in the mounting block 24, and the moving device further comprises a driving device for driving the second bevel gear 4 to rotate relative to the mounting block 24.
Specifically, the driving device comprises a non-circular driving rod 5 penetrating through the axes of all the second bevel gears 4, a cylindrical block 6 is hinged on the stirring sheet 2, a plurality of guide rods 7 penetrating through the cylindrical block 6 are installed in the tank body 1, and the driving device also comprises a driving part for driving the driving rod 5 to rotate.
Specifically, the drive assembly is motor 8 of output and 5 fixed connection of actuating lever, and motor 8 fixed mounting is on jar body 1, and starter motor 8 makes actuating lever 5 rotatory, simultaneously, avoids stirring vane 2 rotatory around actuating lever 5 under the effect of guide bar 7 to make second bevel gear 4 take first bevel gear 3 rotatory, thereby make stirring vane 2 rotation, thereby make stirring vane 2 in every group piece circular or stagger each other.
Specifically, the movement device further comprises a driving ring 9 rotatably connected with the tank body 1, the guide rod 7 is rotatably connected with the driving ring 9, a through hole is formed in the center of the driving ring 9, the driving rod 5 penetrates through the through hole, a convex block is arranged in the through hole, and a stirring block 10 which can be abutted against the convex block is fixedly connected to the driving rod 5.
Specifically, the movement device further comprises a rotation mechanism for driving the guide rod 7 to rotate, and a lifting mechanism for lifting the cylindrical block 6 when the guide rod 7 rotates is installed in the cylindrical block 6.
Specifically, the rotating mechanism comprises a gear 11 fixedly connected to the top end of the guide rod 7, a gear ring 12 is rotatably connected to the tank body 1, the gear ring 12 is meshed with the gear 11, and a clutch device is mounted on the gear ring 12 and can fix the gear ring 12 on the tank body 1 and the driving ring 9.
Specifically, the lifting mechanism comprises a rotary sleeve 13 rotatably connected to the cylindrical block 6, the guide rod 7 is slidably connected with the rotary sleeve 13, a rotary block 14 slidably connected with the guide rod 7 is rotatably connected in the cylindrical block 6, a gear set 15 is installed on the rotary block 14, a toothed ring 16 meshed with the gear set 15 is fixedly installed in the cylindrical block 6, a rack 17 meshed with the gear set 15 is arranged on the guide rod 7, the transmission ratios of the gear sets 15 in the cylindrical blocks 6 in different heights are different, when the guide rod 7 rotates, the rotary sleeve 13 rotates along with the guide rod 7 to enable the gear set 15 to move, due to the fact that the toothed ring 16 does not rotate, the output end of the gear set 15 rotates, the gear set 15 is accordingly lifted along the rack 17, the stirring blades 2 are accordingly lifted, the speed of the stirring blade assembly is controlled according to the different transmission ratios of the gear set 15, the movement speed of the stirring blade assembly above is high, and the movement speed of the stirring blade assembly below is low.
Specifically, the clutch device includes a plurality of sets of connecting blocks 18, two connecting blocks 18 in each set of connecting blocks 18 are symmetrically arranged, the connecting blocks 18 are connected with magnets 20 through springs 19, slide rods slidably connected with the connecting blocks 18 are fixedly connected to the magnets 20, the magnets 20 are slidably connected with the ring gear 12, the magnets 20 are in an isosceles trapezoid shape, a control ring 22 is rotatably connected in the ring gear 12 along the circumferential direction of the ring gear 12, a servo motor 21 is installed on the ring gear 12, a transmission gear 25 for driving the control ring 22 to rotate is installed at an output end of the servo motor 21, three types of protrusions are arranged on the control ring 22, the three types of protrusions are respectively used for pushing the upper magnet 20, pushing the lower magnet 20 and simultaneously pushing the upper and lower magnets 20, friction grains are arranged on corresponding positions of the connecting blocks 18, the tank 1 and the driving ring 9, whether the ring gear 12 is connected with the tank 1 and the driving ring 9 is controlled through the clutch device, so that when the ring gear 12 is connected with the tank 1 and the driving ring 9, the driving ring 5 rotates to enable the stirring blades 2 to rotate, when the ring 12 is connected with the tank 1 and the driving ring 9 and is not connected with the tank 1, the driving ring 9, the stirring blades 2 rotate, thereby enabling the stirring blades 2 to be ejected from the driving ring 12 to move through the servo motor, when the tank 1 is not connected with the driving ring 18, thereby enabling the stirring blades to be ejected out, thereby enabling the servo motor to control the stirring blades to control the driving ring 21, thereby enabling the stirring blades to control ring 21 to control the stirring blades to move, and the driving ring 21 to control the stirring blades to be ejected from the driving ring 21 to be ejected.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A process for preparing zinc sulfate monohydrate by using zinc sulfate heptahydrate as a raw material is characterized by comprising the following steps:
the method comprises the following steps: zinc sulfate heptahydrate and purified water are put into the tank body (1) and stirred by the stirring sheet (2);
step two: adding a suspension prepared from ZnO and water into the tank body (1), stirring for half an hour under heat preservation, heating the solution to eighty ℃ and continuing stirring for ten minutes;
step three: adding active carbon and continuing stirring for ten minutes;
step four: the stirring pieces (2) rotate, so that the stirring pieces (2) are spliced into a circle, and the material is settled;
step five: starting a motion device to enable the stirring sheet (2) to descend so as to carry out filter pressing, and pumping the solution after filter pressing into a refining zone reaction kettle;
step six: adjusting the pH value of the solution by using a reagent concentrated sulfuric acid, and then starting a vacuum pump to perform reduced pressure evaporation with steam to form a feed liquid;
step seven: discharging the concentrated feed liquid, centrifuging, and drying.
2. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to claim 1, wherein the process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material adopts production equipment, the production equipment comprises a tank body (1), at least two stirring blade assemblies are arranged in the tank body (1), the stirring blade assemblies comprise a plurality of stirring blades (2) with the same shape, the stirring blades (2) can be spliced into a circular shape, the circular shape is in contact with the inner wall of the tank body (1), insertion strips (23) and insertion grooves (26) are respectively arranged on two sides of each stirring blade (2), filtering holes are formed in the stirring blades (2), a moving device for controlling the stirring blades (2) to move is arranged in the tank body (1), the moving device is used for controlling the stirring blades (2) to be spliced into a circular ring, controlling the stirring blades (2) to rotate around the axis of the tank body (1) and controlling the stirring blades (2) to lift, a feeding port is arranged at the top of the tank body (1), a slag discharge valve is arranged at the bottom of the tank body (1), and a heating device is arranged in the tank body (1).
3. The process for preparing the zinc sulfate monohydrate as the raw material from the zinc sulfate heptahydrate as the claimed in claim 2, wherein the moving device comprises a first bevel gear (3) and a mounting block (24) which are fixedly connected to a connecting shaft at one end of the stirring blade (2), the same second bevel gear (4) is engaged with the first bevel gear (3) in the same group, the first bevel gear (3) and the second bevel gear (4) are both rotatably mounted in the mounting block (24), and the moving device further comprises a driving device for driving the second bevel gear (4) to rotate relative to the mounting block (24).
4. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to the claim 3, wherein the driving device comprises a non-circular driving rod (5) penetrating through the axes of all the second bevel gears (4), the stirring sheet (2) is hinged with a cylindrical block (6), a plurality of guide rods (7) penetrating through the cylindrical block (6) are installed in the tank body (1), and the driving device further comprises a driving part for rotating the driving rod (5).
5. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to claim 4, wherein the driving part is a motor (8) of which the output end is fixedly connected with the driving rod (5), and the motor (8) is fixedly arranged on the tank body (1).
6. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to claim 4, wherein the movement device further comprises a driving ring (9) rotatably connected with the tank body (1), the guide rod (7) is rotatably connected with the driving ring (9), a through hole is formed in the center of the driving ring (9), the driving rod (5) penetrates through the through hole, a convex block is arranged in the through hole, and a shifting block (10) which can be abutted against the convex block is fixedly connected to the driving rod (5).
7. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to claim 6, wherein the moving device further comprises a rotating mechanism for driving the guide rod (7) to rotate, and a lifting mechanism for lifting the cylindrical block (6) when the guide rod (7) rotates is installed in the cylindrical block (6).
8. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to claim 2, wherein the rotating mechanism comprises a gear (11) fixedly connected to the top end of the guide rod (7), the tank body (1) is rotatably connected with a gear ring (12), the gear ring (12) is meshed with the gear (11), and the gear ring (12) is provided with a clutch device which can fix the gear ring (12) on the tank body (1) and the driving ring (9).
9. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to claim 2, wherein the lifting mechanism comprises a rotating sleeve (13) rotatably connected to a cylindrical block (6), the guide rod (7) is slidably connected with the rotating sleeve (13), a rotating block (14) slidably connected with the guide rod (7) is rotatably connected to the cylindrical block (6), a gear set (15) is installed on the rotating block (14), a gear ring (16) meshed with the gear set (15) is fixedly installed in the cylindrical block (6), a rack (17) meshed with the gear set (15) is arranged on the guide rod (7), and the gear sets (15) in the cylindrical blocks (6) with different heights have different transmission ratios.
10. The process for preparing the zinc sulfate monohydrate by using the zinc sulfate heptahydrate as the raw material according to claim 8, wherein the clutch device comprises a plurality of groups of connecting blocks (18), two connecting blocks (18) in each group of connecting blocks (18) are symmetrically arranged, the connecting blocks (18) are connected with magnets (20) through springs (19), slide rods which are in sliding connection with the connecting blocks (18) are fixedly connected onto the magnets (20), the magnets (20) are in sliding connection with the gear ring (12), the magnets (20) are in isosceles trapezoid shapes, a control ring (22) is rotatably connected into the gear ring (12) along the circumferential direction of the gear ring (12), a servo motor (21) is installed on the gear ring (12), a transmission gear (25) used for driving the control ring (22) to rotate is installed at the output end of the servo motor (21), three protrusions are arranged on the control ring (22), and are respectively used for pushing the magnets (20) above, the magnets (20) below and the magnets (20) above and below, and friction lines are arranged on corresponding positions of the connecting blocks (18), the tank body (1) and the driving ring (9).
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| CN115215367B (en) | 2024-10-01 |
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