CN110304763A - The system and method for handling zincky waste liquor - Google Patents
The system and method for handling zincky waste liquor Download PDFInfo
- Publication number
- CN110304763A CN110304763A CN201910625804.3A CN201910625804A CN110304763A CN 110304763 A CN110304763 A CN 110304763A CN 201910625804 A CN201910625804 A CN 201910625804A CN 110304763 A CN110304763 A CN 110304763A
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- Prior art keywords
- cylinder
- waste liquor
- slurry
- zinc hydroxide
- upper cylinder
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- 239000002699 waste material Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 52
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims abstract description 144
- 239000002002 slurry Substances 0.000 claims abstract description 105
- 239000011268 mixed slurry Substances 0.000 claims abstract description 78
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 claims abstract description 76
- 229940007718 zinc hydroxide Drugs 0.000 claims abstract description 76
- 229910021511 zinc hydroxide Inorganic materials 0.000 claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000011701 zinc Substances 0.000 claims abstract description 38
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 32
- 230000007704 transition Effects 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 17
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000001914 filtration Methods 0.000 claims description 16
- 238000004062 sedimentation Methods 0.000 claims description 13
- 238000011144 upstream manufacturing Methods 0.000 claims description 11
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- 229910052791 calcium Inorganic materials 0.000 claims description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 5
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 3
- 239000005864 Sulphur Substances 0.000 claims description 3
- 235000011132 calcium sulphate Nutrition 0.000 description 65
- 239000002245 particle Substances 0.000 description 46
- 230000000694 effects Effects 0.000 description 23
- 230000005484 gravity Effects 0.000 description 23
- 230000008569 process Effects 0.000 description 12
- 238000004064 recycling Methods 0.000 description 12
- 239000002253 acid Substances 0.000 description 11
- 239000007787 solid Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 9
- 238000005243 fluidization Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 239000001175 calcium sulphate Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910001385 heavy metal Inorganic materials 0.000 description 4
- 239000002351 wastewater Substances 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 229910052602 gypsum Inorganic materials 0.000 description 2
- 239000010440 gypsum Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 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
- 230000001174 ascending effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000001117 sulphuric acid Substances 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
Abstract
The invention discloses a kind of system and method for handling zincky waste liquor, which includes: neutralization device, have zincky waste liquor entrance, neutralizer entrance and mixed slurry outlet；Grading plant, from top to bottom includes: upper cylinder, and the top of upper cylinder is opened wide, comprising: mixed slurry inlet pipe, by stretching to upper column body at the top of upper cylinder；Overflow launder is located on the lateral wall at the top of upper cylinder；Zinc hydroxide slurry outlet is arranged in isopipe root；Underflow cylinder, comprising: be rotated into water pipe, the tangent setting of side wall with underflow cylinder lower part；Calcium sulfate slurry outlet, the tangent setting of side wall of discharging direction and underflow cylinder top, in the height direction, calcium sulfate slurry outlet are located at the top for being rotated into water pipe；Transition cylinder connects upper cylinder and underflow cylinder；Sedimentation-filter element, liquid exports after there is sedimentation-filter element zinc hydroxide slurry inlet, flocculant entrance, zinc-rich slag to export and filter.
Description
Technical field
The invention belongs to silicon carbide process fields, specifically, the present invention relates to the system and method for processing zincky waste liquor.
Background technique
The waste acid generated in existing Zinc hydrometallurgy process, the main method processing neutralized using lime, is generated in a large amount of
And slag.This neutralization slag belongs to hazardous waste, and processing cost is higher, and in addition to there is some heavy metals in slag, there are also a large amount of zinc quilts
Neutralization precipitation, can not reuse, cause the waste of resource.There is document to propose using two-stage method classification processing waste acid, first segment
PH value is lower than the pH of Hydrolysis Reactions of Metal-ions precipitating, and product is pure gypsum；Two sections of raising pH precipitate metal ions.But many gold
The precipitating pH for belonging to ion is relatively low, i.e. precipitable in acid condition, such as aluminium, ferric iron, zinc etc., so obtained gypsum is pure
Spend limited, and wherein heavy metal ion is also more.In addition, there are also all other methods to handle waste acid, as electric flocculation method, biology are inhaled
Attached, ferrite process etc., but engineering application is not all carried out.
Zincky waste liquor is a certain amount of acid waste water that wet cleaning washing and demisting generate in the process in zinc abstraction, can be adopted
With sulfide precipitation heavy metal therein or hydroxide neutralization precipitation heavy metal is used, but existing most method is only for reaching
The purpose of wastewater discharge standard, the recycling or cost recovery for not taking into account wherein valuable metal are excessively high.
Therefore, the technology of processing zincky waste liquor is further improved at present.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose a kind of system and method for handling zincky waste liquor.The system realizes the zinc hydroxide to different-grain diameter
With the high-effective classifying of calcium sulfate, the recycling to zinc is realized after sedimentation and filtering, and entire technique can be carried out continuously, process letter
It is single, it is easy to accomplish industrialization.
In one aspect of the invention, the invention proposes a kind of system for handling zincky waste liquor, realities according to the present invention
Example is applied, which includes:
Device is neutralized, the neutralization device has zincky waste liquor entrance, neutralizer entrance and mixed slurry outlet；
Grading plant, the grading plant from top to bottom include:
The top of upper cylinder, the upstream cylinder is opened wide, comprising:
Mixed slurry inlet pipe, the mixed slurry inlet pipe at the top of the upper cylinder by stretching in the upper cylinder
Portion, the mixed slurry inlet pipe are connected with mixed slurry outlet；
Overflow launder, the overflow launder are located on the lateral wall at the top of the upper cylinder；
Zinc hydroxide slurry outlet, the zinc hydroxide slurry outlet are arranged in the isopipe root；
Underflow cylinder, the underflow cylinder include:
It is rotated into water pipe, the tangent setting of side wall for being rotated into water pipe Yu underflow cylinder lower part；
Calcium sulfate slurry outlet, the discharging direction and the side wall phase on underflow cylinder top of the calcium sulfate slurry outlet
Setting is cut, in the height direction, the calcium sulfate slurry outlet is located at the top for being rotated into water pipe；
Transition cylinder, the transition cylinder connection upper cylinder and the underflow cylinder；
Sedimentation-filter element, the sedimentation-filter element have zinc hydroxide slurry inlet, flocculant entrance, zinc-rich slag
Liquid exports behind outlet and filtering, and the zinc hydroxide slurry inlet is connected with the zinc hydroxide slurry outlet.
After the system of processing zincky waste liquor according to an embodiment of the present invention, acid zincky waste liquor and neutralizer effect, energy
The mixed slurry containing zinc hydroxide and calcium sulfate is obtained, mixed slurry enters upper cylinder by mixed slurry inlet pipe, together
Shi Shuicong is rotated into water pipe and enters underflow cylinder, and because being rotated into the tangent setting of side wall of water pipe Yu underflow cylinder lower part, water is the bottom of along
Stream inboard wall of cylinder tangent line enters into and up to form vortex water flow, and mixes with the mixed slurry being passed through.In mixed slurry specific gravity compared with
The big or biggish solid calcium sulphate particles of partial size deposit downwards, are discharged finally by calcium sulfate slurry outlet；And specific gravity is smaller
Or the lesser zinc hydroxide particle of partial size then follows the water flow rotated upwards to move upwards, and is finally overflowed by upper cylinder top
And enter overflow launder, it is discharged by zinc hydroxide slurry outlet.Resulting zinc hydroxide slurry is through further flocculation sedimentation and mistake
After filter, zinc-rich slag can be obtained, realize the recycling to zinc.The system realizes the zinc hydroxide and sulfuric acid to different-grain diameter as a result,
The high-effective classifying of calcium realizes the recycling to zinc after sedimentation and filtering, and entire technique can be carried out continuously, and process is simple, easily
It is industrialized in realizing.
In addition, the system of processing zincky waste liquor according to the above embodiment of the present invention can also have following additional technology
Feature:
In some embodiments of the invention, in the height direction, the lateral wall of the overflow launder is higher than the upper fluidization tower
The lateral wall of body.The recycling of the classification to smaller specific gravity or the smaller mixed slurry of partial size can be further realized as a result,.
In some embodiments of the invention, the ratio of height to diameter of the upper cylinder is (5-25): 1.It can further mention as a result,
The grading effect of the system and method for high disposal zincky waste liquor.
In some embodiments of the invention, in the height direction, silicon carbide slurry inlet pipe bottom end and the upstream
The distance on cylinder top accounts for the 75-80% of the upper height of column.It can further improve point of silicon carbide grading device as a result,
Grade effect.
In some embodiments of the invention, the ratio of height to diameter of the upper cylinder is 10:1.It can further improve place as a result,
Manage the grading effect of the system and method for zincky waste liquor.
In some embodiments of the invention, the diameter ratio of the upper cylinder and the underflow cylinder is (1.2-2): 1.
The classification efficiency of the system and method for processing zincky waste liquor can be further promoted as a result,.
In some embodiments of the invention, the cross-sectional area of the transition cylinder is gradually reduced from top to bottom.As a result,
The classification efficiency of the system and method for processing zincky waste liquor can further be promoted.
In some embodiments of the invention, the side wall of the transition cylinder and the angle of vertical direction are 25-35 degree.By
This, can further promote the classification efficiency of the system and method for processing zincky waste liquor.
In some embodiments of the invention, the upper cylinder further comprises middle outflux, the middle outflux position
In on the side wall of the upper cylinder, and it is lower than the zinc hydroxide slurry outlet in the height direction.It as a result, can be as needed
The mixed slurry in another specific gravity or particle size range is obtained, the multi-level hierarchical of mixed slurry is further realized.
In some embodiments of the invention, including multiple middle outfluxes, and the multiple middle outflux is described
It is spaced apart on upper cylinder.The multi-level hierarchical of mixed slurry can be further realized as a result, improve classification efficiency.
In some embodiments of the invention, the multiple middle outflux interval point along the upper height of column direction
Cloth.The multi-level hierarchical of mixed slurry can be further realized as a result, improve classification efficiency.
In some embodiments of the invention, water pipe and the calcium sulfate slurry outlet of being rotated into is in the throwing of horizontal plane
Shadow angle is 0-360 degree.It can further improve the classification efficiency of the system and method for processing zincky waste liquor as a result,.
In some embodiments of the invention, water pipe and the calcium sulfate slurry outlet of being rotated into is in the throwing of horizontal plane
Shadow angle is 180 degree.It can further improve the classification efficiency of the system and method for processing zincky waste liquor as a result,.
In some embodiments of the invention, the upper cylinder is made up of the sub- cylinder of more piece flanged joint.As a result,
The height of upper cylinder can be adjusted by increasing or reducing the number of sub- cylinder, and then different specific weight or grain can be flexibly met
The classification of diameter silicon-carbide particle needs.
In some embodiments of the invention, the upper cylinder further comprises water supply pipe, and the water supply pipe stretches to
It is described upstream cylinder inside and Open Side Down, the water supply pipe is located at the lower section of mixed slurry inlet pipe bottom end.As a result, may be used
Further increase the grading effect of the system and method for processing zincky waste liquor.
In some embodiments of the invention, the water supply pipe is located at the underface of mixed slurry inlet pipe bottom end.By
This, can further improve the grading effect of the system and method for processing zincky waste liquor.
In another aspect of the invention, contained the invention proposes a kind of using the system processing of above-mentioned processing zincky waste liquor
The method of zinc waste liquid, according to an embodiment of the invention, this method comprises:
(1) zincky waste liquor is sent with neutralizer into the neutralization device and is neutralized, to obtain mixed slurry；
(2) mixed slurry is sent and carries out classification processing into the grading plant, to obtain zinc hydroxide slurry
With calcium sulfate slurry；
(3) the zinc hydroxide slurry and flocculant are sent to the sedimentation-filter element and is successively settled and filtered
Processing, to obtain liquid after zinc-rich slag and filtering.
After the method for processing zincky waste liquor according to an embodiment of the present invention, acid zincky waste liquor and neutralizer effect, energy
The mixed slurry containing zinc hydroxide and calcium sulfate is obtained, mixed slurry enters upper cylinder by mixed slurry inlet pipe, together
Shi Shuicong is rotated into water pipe and enters underflow cylinder, and because being rotated into the tangent setting of side wall of water pipe Yu underflow cylinder lower part, water is the bottom of along
Stream inboard wall of cylinder tangent line enters into and up to form vortex water flow, and mixes with the mixed slurry being passed through.In mixed slurry specific gravity compared with
The big or biggish solid calcium sulphate particles of partial size deposit downwards, are discharged finally by calcium sulfate slurry outlet；And specific gravity is smaller
Or the lesser zinc hydroxide particle of partial size then follows the water flow rotated upwards to move upwards, and is finally overflowed by upper cylinder top
And enter overflow launder, it is discharged by zinc hydroxide slurry outlet.After resulting zinc hydroxide slurry is further precipitated and is filtered,
Zinc-rich slag can be obtained, realize the recycling to zinc.The method achieve the height of zinc hydroxide and calcium sulfate to different-grain diameter as a result,
Effect classification realizes the recycling to zinc after sedimentation and filtering, and entire technique can be carried out continuously, and process is simple, it is easy to accomplish
Industrialization.
In addition, the method for processing zincky waste liquor according to the above embodiment of the present invention can also have following additional technology
Feature:
In some embodiments of the invention, in step (1), Zn content is 120-180g/L in the zincky waste liquor.
In some embodiments of the invention, in step (1), the pH value of the zincky waste liquor is 0.5-5.0.
In some embodiments of the invention, in step (2), the partial size of zinc hydroxide is small in the zinc hydroxide slurry
In 20.0 microns.
In some embodiments of the invention, in step (2), the partial size of calcium sulfate is greater than in the calcium sulfate slurry
30.0 microns.
In some embodiments of the invention, in step (3), based on zincky waste liquor described in 1t, the flocculant adds
Entering amount is 10-50g.
Additional aspect and advantage of the invention will be set forth in part in the description, and will partially become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect of the invention and advantage will become from the description of the embodiment in conjunction with the following figures
Obviously and it is readily appreciated that, in which:
Fig. 1 is the system structure diagram of processing zincky waste liquor according to an embodiment of the invention；
Fig. 2 is the structural schematic diagram of grading plant according to an embodiment of the invention；
Fig. 3 is the structural schematic diagram of the grading plant of further embodiment according to the present invention；
Fig. 4 is the system structure diagram of the processing zincky waste liquor of further embodiment according to the present invention；
Fig. 5 is the structural schematic diagram of the grading plant of another embodiment according to the present invention；
Fig. 6 is according to an embodiment of the invention to be rotated into water pipe and calcium sulfate slurry export structure top view；
Fig. 7 is the method flow schematic diagram of processing zincky waste liquor according to an embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to is used to explain the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, in the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise
Clear specific restriction.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In one aspect of the invention, the invention proposes a kind of system for handling zincky waste liquor, realities according to the present invention
Example is applied, with reference to Fig. 1-7, the system of the processing zincky waste liquor includes: to neutralize device 400, grading plant and sedimentation-filter element
500。
According to an embodiment of the invention, neutralizing device 400 has zincky waste liquor entrance 401, neutralizer entrance 402 and mixing
Slurry outlet 403, and be suitable for zincky waste liquor and neutralizer carrying out neutralization reaction, to obtain containing zinc hydroxide and calcium sulfate
Mixed slurry.Specifically, zincky waste liquor is a certain amount of acid that wet cleaning washing and demisting generate in the process in zinc abstraction
Property waste water, Zn content is 120-180g/L in zincky waste liquor, for example, can for 120g/L, 130g/L, 140g/L, 150g/L,
160g/L, 170g/L, 180g/L, the pH value of zincky waste liquor can be 0.5-5.0, for example, can for 0.5,1.0,1.5,2.0,
2.5,3.0,3.5,4.0,4.5,5.0.Neutralizer, which can react for lime or carbide slag etc. with zincky waste liquor, generates zinc hydroxide
With the substance of calcium sulfate.Depending on the additional amount of neutralizer can be according to the Zn content in zincky waste liquor.
According to an embodiment of the invention, grading plant from top to bottom includes: upper cylinder 100, underflow column with reference to Fig. 1-5
Body 200 and transition cylinder 300.
According to one embodiment of present invention, the top of upper cylinder 100 is opened wide, comprising: mixed slurry inlet pipe 11, overflow
Slot 12 and zinc hydroxide slurry outlet 13.Specifically, mixed slurry inlet pipe 11 stretches to upper fluidization tower by the top of upper cylinder 100
100 inside of body and the bottom for extending close to upper main body 100, mixed slurry inlet pipe 11 are connected with mixed slurry outlet 403, overflow
Slot 12 is located on the lateral wall at upper 100 top of cylinder, and zinc hydroxide slurry outlet 13 is arranged in 12 bottom of overflow launder, and is suitable for
Mixed slurry is conveyed by mixed slurry inlet pipe, the specific gravity or the lesser zinc hydroxide slurry of partial size that overflow goes out are collected by overflow launder
Expect and passes through zinc hydroxide slurry outlet for the specific gravity collected in overflow launder or the lesser zinc hydroxide slurry discharge of partial size.Specifically
, the partial size of zinc hydroxide particle is less than 20.0 microns.It should be noted that mixed slurry inlet pipe is from the open top of upper cylinder
The concrete form that portion enters upper cylinder is not particularly restricted, and those skilled in the art can select according to actual needs
It selects, such as can enter from the axis line position of upper cylinder, it can also be flat with the central axes of upper cylinder from upper cylinder
Capable position enters, and can also have the position of certain angle to enter with upper cylinder central axes from upper cylinder.Further
, mixed slurry inlet pipe can be by being arranged fixed bracket in outside to be protruded into upper cylinder.Overflow launder is specifically set
It sets and is also not particularly limited, can be around a part of lateral wall setting at the top of upper cylinder, it can also be around upper cylinder top
The entire lateral wall in portion is arranged.Zinc hydroxide slurry outlet is in the specific location of isopipe root, quantity and size also not by spy
It does not limit, those skilled in the art can starch according to needs of production, such as specific gravity smaller in overflow launder or particle zinc hydroxide
The uninterrupted of material is configured.
A specific embodiment according to the present invention, in the height direction, the lateral wall of overflow launder 12 can be higher than upstream
The lateral wall of cylinder 100 can avoid zinc hydroxide slurry in overflow launder as a result, and overflow overflow launder, causes zinc hydroxide slurry
Waste.It should be noted that the specific value of the high upper cylinder lateral wall of the lateral wall of overflow launder is not particularly restricted, ability
Field technique personnel can select according to actual needs, such as can be overflow according to the volume of overflow launder, zinc hydroxide slurry
Depending on the flow of flow and the zinc hydroxide slurry from the discharge of zinc hydroxide slurry outlet.
Another specific embodiment according to the present invention, in the height direction, 11 bottom end of mixed slurry inlet pipe and upper fluidization tower
The distance on 100 top of body can account for the 75-80% of upper 100 height of cylinder, for example, can for 75%, 76%, 77%, 78%,
79%, 80%.Inventors have found that mixed slurry inlet pipe bottom end is closer apart from calcium sulfate slurry outlet if the ratio is excessively high, mix
The settling height for closing slurry is shorter, and zinc hydroxide particle is possible to be mixed into underflow and be pulled away；And if the ratio is too low, mixes
It is closer apart from overflow launder to close slurry inlet pipe bottom end, causes weight particle too close apart from overflow launder, will cause a small amount of calcium sulfate weight particle
It follows zinc hydroxide light particle from zinc hydroxide slurry outlet venting, reduces the quality of zinc hydroxide light particle product.Inventor
It is had been surprisingly found that by many experiments, in the height direction, mixed slurry inlet pipe bottom end accounts for upstream at a distance from upper cylinder top
The 75-80% of 100 height of cylinder is most appropriate, it is possible thereby to further increase the separating effect of mixed slurry.
Another specific embodiment according to the present invention, the ratio of height to diameter of upper cylinder can be (5-25): 1, such as can be with
For 5/10/15/20/25:1, preferably 10:1.Inventors have found that upper cylinder is meticulous, mixed slurry if ratio of height to diameter is excessive
Flow velocity in it increases, and easily weight particle is brought to overflow launder and is overflowed；And if ratio of height to diameter is too small, upper cylinder is short and thick, mixing
Flow velocity of the slurry in it reduces, it is easier that light particle decline is discharged from calcium sulfate slurry outlet.Inventor passes through many experiments
It has been surprisingly found that, when the ratio of height to diameter of upper cylinder is (5-25): when 1, sufficiently long flow path can be provided, guarantee mixed slurry
In solid particle can effectively be dispersed and be floated, sink after be classified.And when the ratio of height to diameter of upper cylinder is 10:
The grading effect of grading plant can be significantly improved when 1.
Another specific embodiment according to the present invention, with reference to Fig. 2, upper cylinder 100 can be led to by the sub- cylinder 14 of more piece
The connection composition of flange 15 is crossed, rubber mat bolt pinch seal can be used between flange 15.Thus, it is possible to by increasing or reducing son
The number of cylinder adjusts the height of upper cylinder, and then can be flexibly met the classification needs of different mixed slurries.Such as when mixed
It, can be mixed to improve by lengthening the height of upper cylinder in conjunction slurry when the specific gravity or unobvious partial size difference of solid particle
Close the grading effect of slurry.It further,, can be in upper fluidization tower in order to make upper cylinder more stable in the process of running with reference to Fig. 3
Support frame 16 is set on external wall.Further, the material of upper cylinder is not particularly restricted, and those skilled in the art can be with
It is selected according to actual needs, such as at least one of ordinary carbon steel, stainless steel, organic glass can be selected from.
Another specific embodiment according to the present invention, with reference to Fig. 4, upper cylinder 100 may further include middle outflow
Mouth 17, middle outflux 17 is located on the side wall of upper cylinder 100, and is lower than zinc hydroxide slurry outlet 13 in the height direction,
Middle outflux 17 is connected with device 400 is neutralized, and is suitable for effectively discharge specific gravity and partial size and is in medium calcium sulfate particle, and will
The medium calcium sulfate particle of the part partial size is back to neutralization device, to promote to neutralize the growth of calcium sulfate particle in device.By
This, can be by realizing the recycling to medium grain size calcium sulfate with the difference in height of zinc hydroxide slurry outlet.Medium grain calcium sulfate
Particle size range be 20.0-30.0 microns.It further, may include multiple middle outfluxes 17, and multiple middle outfluxes 17 exist
It is spaced apart on upper cylinder.For example, multiple middle outfluxes can be along the same cross sectional arrangement of upper cylinder, to improve the position
Set the recovery efficiency for locating corresponding specific gravity or partial size calcium sulfate slurry；It can also be arranged in varying cross-section and different longitudinal sections, with
The calcium sulfate slurry of different specific weight or partial size is obtained, grading effect is improved.Preferably, multiple middle outfluxes 17 can be along upper fluidization tower
It is spaced apart in 100 short transverse of body, can collect to obtain from each middle outflux as a result, in respective range has certain weight proportion
Or the calcium sulfate slurry of partial size, further promote the grading effect of grading plant.It can be exported by multiple middle sections of setting same
When isolate the calcium sulfate of different-grain diameter, and then meet the needs of to different-grain diameter calcium sulfate.Further, middle outflux and water
The angle of plane is not particularly restricted, and those skilled in the art can select according to actual needs.
Another specific embodiment according to the present invention, with reference to Fig. 5, upper cylinder 100 may further include water supply pipe
18, water supply pipe 18 stretches to the inside of upper cylinder 100 and Open Side Down, and water supply pipe 18 is located at 11 bottom end of mixed slurry inlet pipe
Lower section.Inventors have found that water supply pipe can be opened when the difference of specific gravity of solid particle in mixed slurry is smaller, it is light to offset
Particles sink speed rises light particle and weight particle keeps declining.Further, water supply pipe 18 is located at mixed slurry inlet pipe 11
Thus the underface of bottom end can further improve the grading effect of grading plant.
Still another embodiment in accordance with the present invention, underflow cylinder 200 include being rotated into water pipe 21 and calcium sulfate slurry outlet
22, it is rotated into the tangent setting of side wall of water pipe 21 Yu 200 lower part of underflow cylinder, the discharging direction of calcium sulfate slurry outlet 22 and bottom
The tangent setting of side wall on 200 top of fluidization tower body, in the height direction, calcium sulfate slurry outlet 22, which is located at, is rotated into the upper of water pipe 21
Portion, and be suitable for from water pipe is rotated into being to handle the system and method supply water of zincky waste liquor and be discharged not from calcium sulfate slurry outlet
The disconnected specific gravity deposited or the biggish calcium sulfate slurry of partial size.Specifically, the calcium sulfate slurry being discharged from calcium sulfate slurry outlet
The partial size of calcium sulfate particle is greater than 30.0 microns in material.It is rotated into the tangent setting of side wall of water pipe Yu underflow cylinder lower part, so that
Entered by being rotated into the water flow that water pipe is passed through along the inner wall tangent line of underflow cylinder, and then water flow can be made to enter underflow cylinder
Afterwards with the power of upward eddying motion, effectively drives Motion of solid particle in mixed slurry and disperse, finally realize classification.Sulphur
The discharging direction of sour calcium slurry outlet and the tangent setting of side wall on underflow cylinder top, and in the height direction, calcium sulfate slurry
Outlet is located at the top for being rotated into water pipe, and the specific gravity constantly deposited can effectively be discharged by calcium sulfate slurry outlet as a result,
With the biggish calcium sulfate particle of partial size.Further, the material of underflow cylinder is not particularly restricted, and those skilled in the art can
To be selected according to actual needs, such as at least one of ordinary carbon steel, stainless steel, organic glass can be selected from.
A specific embodiment according to the present invention is rotated into water pipe 21 and calcium sulfate slurry outlet 22 in the throwing of horizontal plane
Shadow angle can be 0-360 degree, not only can be convenient as a result, Rotatable water inlet water inlet tube and calcium sulfate slurry outlet discharge specific gravity or
The biggish mixed slurry of partial size, moreover it is possible to keep the structure adaptability strong.Further, it is rotated into water pipe and calcium sulfate slurry outlet exists
The preferred 180 degree of projection angle of horizontal plane, as shown in Figure 6.It is can further improve as a result, from calcium sulfate slurry outlet and specific gravity is discharged
Or the efficiency of the biggish calcium sulfate slurry of partial size.
The diameter ratio of another specific embodiment according to the present invention, upper cylinder 100 and underflow cylinder 200 can be
(1.2-2): 1.Inventors have found that the diameter of underflow cylinder is less than upper cylinder, be conducive to improve from being rotated into what water pipe entered
The vortex effect of water, and then be conducive to improve mixed slurry and break up effect, so that the solid particle in mixed slurry is as far as possible
Dispersion, to improve the grading effect of mixed slurry.
According to still another embodiment of the invention, transition cylinder 300 connects upper cylinder 100 and underflow cylinder 200, and suitable
The supreme fluidization tower body of water sport that Yu Rangcong underflow cylinder enters.Specifically, the bottom end phase on the top of transition cylinder and upper cylinder
Even, the bottom end of transition cylinder is connected with the top of underflow cylinder, transition cylinder and the upper bottom end of cylinder and the top of underflow cylinder
End can be connected by welding.Further, the concrete shape of transition cylinder and structure are not particularly restricted, those skilled in the art
Member can be selected according to actual needs, such as transition cylinder 300 can be what cross-sectional area be gradually reduced from top to bottom
Structure, the i.e. diameter of underflow cylinder are less than upper cylinder, are conducive to improve the vortex effect from the water that water pipe enters is rotated into, into
And be conducive to improve mixed slurry and break up effect, so that the solid particle in mixed slurry disperses as far as possible, it is mixed to improve
Close the grading effect of slurry.The structure also may make the water flow risen from underflow cylinder that can successfully move to upper cylinder.Into
One step, the side wall of transition cylinder 300 and the angle of vertical direction can be 25-35 degree, such as can be 25 degree, 26 degree, 27
Degree, 28 degree, 29 degree, 30 degree, 31 degree, 32 degree, 33 degree, 34 degree, 35 degree.Inventors have found that under the angle, ascending current from
Underflow cylinder will not exceedingly lose water velocity when moving to upper cylinder, be conducive to the classification for further increasing mixed slurry
Efficiency.Further, the material of transition cylinder is not particularly restricted, and those skilled in the art can carry out according to actual needs
Selection, such as at least one of ordinary carbon steel, stainless steel, organic glass can be selected from.
According to an embodiment of the invention, sedimentation-filter element 500 has zinc hydroxide slurry inlet 501, flocculant entrance
502, zinc-rich slag exports liquid outlet 504, zinc hydroxide slurry inlet 501 and 13 phase of zinc hydroxide slurry outlet after 503 and filtering
Even, and it is suitable for zinc hydroxide slurry and flocculant carrying out sedimentation reaction, and zinc-rich slag and liquid after filtering is obtained by filtration.Specifically
, flocculant can be PAM, PAC, be based on 1t zincky waste liquor, the additional amount of flocculant can be 10-50g, such as can be
10g,20g,30g,40g,50g.Further, sedimentation-filter element can successively include sedimentation device and filter device, to divide
Other zinc hydroxide slurry carries out settlement treatment and is filtered processing to slurry after sedimentation.
After the system of processing zincky waste liquor according to an embodiment of the present invention, acid zincky waste liquor and neutralizer effect, energy
The mixed slurry containing zinc hydroxide and calcium sulfate is obtained, mixed slurry enters upper cylinder by mixed slurry inlet pipe, together
Shi Shuicong is rotated into water pipe and enters underflow cylinder, and because being rotated into the tangent setting of side wall of water pipe Yu underflow cylinder lower part, water is the bottom of along
Stream inboard wall of cylinder tangent line enters into and up to form vortex water flow, and mixes with the mixed slurry being passed through.In mixed slurry specific gravity compared with
The big or biggish solid calcium sulphate particles of partial size deposit downwards, are discharged finally by calcium sulfate slurry outlet；And specific gravity is smaller
Or the lesser zinc hydroxide particle of partial size then follows the water flow rotated upwards to move upwards, and is finally overflowed by upper cylinder top
And enter overflow launder, it is discharged by zinc hydroxide slurry outlet.Resulting zinc hydroxide slurry is through further flocculation sedimentation and mistake
After filter, zinc-rich slag can be obtained, realize the recycling to zinc.The system realizes the zinc hydroxide and sulfuric acid to different-grain diameter as a result,
The high-effective classifying of calcium realizes the recycling to zinc after sedimentation and filtering, and entire technique can be carried out continuously, and process is simple, easily
It is industrialized in realizing.
In another aspect of the invention, contained the invention proposes a kind of using the system processing of above-mentioned processing zincky waste liquor
The method of zinc waste liquid, according to an embodiment of the invention, with reference to Fig. 7, this method comprises:
S100: zincky waste liquor is sent with neutralizer into neutralization device and is neutralized
In the step, zincky waste liquor is sent with neutralizer into neutralization device and is neutralized, to obtain mixing slurry
Material.Specifically, zincky waste liquor is a certain amount of acid waste water that wet cleaning washing and demisting generate in the process in zinc abstraction, contain
Zn content is 120-180g/L in zinc waste liquid, such as can be 120g/L, 130g/L, 140g/L, 150g/L, 160g/L, 170g/
L, 180g/L, the pH value of zincky waste liquor can be 0.5-5.0, for example, can for 0.5,1.0,1.5,2.0,2.5,3.0,3.5,
4.0,4.5,5.0.Neutralizer can react the object for generating zinc hydroxide and calcium sulfate for lime or carbide slag etc. with zincky waste liquor
Matter.Depending on the additional amount of neutralizer can be according to the Zn content in zincky waste liquor.
S200: mixed slurry is sent into grading plant and carries out classification processing
Mixed slurry is sent into grading plant and carries out classification processing, to obtain zinc hydroxide slurry and calcium sulfate slurry
Material.Specifically, the zinc hydroxide particle and partial size in mixed slurry containing partial size less than 20.0 microns are not less than 20.0 microns
Calcium sulfate particle, mixed slurry enters upper cylinder by mixed slurry inlet pipe, while water enters underflow from water pipe is rotated into
Cylinder, because being rotated into the tangent setting of side wall of water pipe Yu underflow cylinder lower part, water is entered into and up along underflow inboard wall of cylinder tangent line
Vortex water flow is formed, and is mixed with the mixed slurry being passed through.Specific gravity is larger in mixed slurry or the biggish solid sulphuric acid of partial size
Calcium particle deposits downwards, is discharged finally by calcium sulfate slurry outlet；And specific gravity is smaller or the lesser zinc hydroxide of partial size
Grain then follows the water flow rotated upwards to move upwards, and finally overflows and enters overflow launder by upper cylinder top, pass through hydroxide
The discharge of zinc slurry outlet.When being equipped with middle outflux in grading plant, the medium calcium sulfate particle of partial size can pass out mouth row
Out, and it can be recovered and be back to neutralization device, to promote to neutralize the growth of calcium sulfate particle in device.One according to the present invention
Embodiment, when the charging rate of mixed ore pulp is 100-200ml/min, being rotated into and being passed through the flow velocity of wash water in water pipe is 50-
When 100ml/min, the particle size range of the zinc hydroxide particle for the small particle isolated by upper outflux is less than 20.0 microns；In
The particle size range that outflux isolates the calcium sulfate particle of middle partial size is 20.0-30.0 microns, the calcium sulfate of these smaller particles
The growth for neutralizing device to promote calcium sulfate can be returned；The partial size for isolating large-sized calcium sulfate particle by underflow outlet is big
In 30.0 microns.
S300: zinc hydroxide slurry and flocculant are sent to sedimentation-filter element and successively carry out sedimentation and filtration treatment
In the step, zinc hydroxide slurry and flocculant are sent to sedimentation-filter element and successively carried out at sedimentation and filtering
Reason, to obtain liquid after zinc-rich slag and filtering.Specifically, flocculant can be PAM, PAC, it is based on 1t zincky waste liquor, flocculant
Additional amount can be 10-50g, such as can be 10g, 20g, 30g, 40g, 50g.
After the method for processing zincky waste liquor according to an embodiment of the present invention, acid zincky waste liquor and neutralizer effect, energy
The mixed slurry containing zinc hydroxide and calcium sulfate is obtained, mixed slurry enters upper cylinder by mixed slurry inlet pipe, together
Shi Shuicong is rotated into water pipe and enters underflow cylinder, and because being rotated into the tangent setting of side wall of water pipe Yu underflow cylinder lower part, water is the bottom of along
Stream inboard wall of cylinder tangent line enters into and up to form vortex water flow, and mixes with the mixed slurry being passed through.In mixed slurry specific gravity compared with
The big or biggish solid calcium sulphate particles of partial size deposit downwards, are discharged finally by calcium sulfate slurry outlet；And specific gravity is smaller
Or the lesser zinc hydroxide particle of partial size then follows the water flow rotated upwards to move upwards, and is finally overflowed by upper cylinder top
And enter overflow launder, it is discharged by zinc hydroxide slurry outlet.After resulting zinc hydroxide slurry is further precipitated and is filtered,
Zinc-rich slag can be obtained, realize the recycling to zinc.The method achieve the height of zinc hydroxide and calcium sulfate to different-grain diameter as a result,
Effect classification realizes the recycling to zinc after sedimentation and filtering, and entire technique can be carried out continuously, and process is simple, it is easy to accomplish
Industrialization.It gives up it should be noted that the characteristics of system of above-mentioned processing zincky waste liquor and advantage are equally applicable to the processing containing zinc
The method of liquid repeats no more this.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
It can be combined in any suitable manner in one or more embodiment or examples.In addition, without conflicting with each other, the skill of this field
Art personnel can tie the feature of different embodiments or examples described in this specification and different embodiments or examples
It closes and combines.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of system for handling zincky waste liquor characterized by comprising
Device is neutralized, the neutralization device has zincky waste liquor entrance, neutralizer entrance and mixed slurry outlet；
Grading plant, the grading plant from top to bottom include:
The top of upper cylinder, the upstream cylinder is opened wide, comprising:
Mixed slurry inlet pipe, the mixed slurry inlet pipe by stretching to the upper column body at the top of the upper cylinder,
The mixed slurry inlet pipe is connected with mixed slurry outlet；
Overflow launder, the overflow launder are located on the lateral wall at the top of the upper cylinder；
Zinc hydroxide slurry outlet, the zinc hydroxide slurry outlet are arranged in the isopipe root；
Underflow cylinder, the underflow cylinder include:
It is rotated into water pipe, the tangent setting of side wall for being rotated into water pipe Yu underflow cylinder lower part；
Calcium sulfate slurry outlet, the discharging direction of the calcium sulfate slurry outlet and side wall on underflow cylinder top is tangent sets
It sets, in the height direction, the calcium sulfate slurry outlet is located at the top for being rotated into water pipe；
Transition cylinder, the transition cylinder connection upper cylinder and the underflow cylinder；
Sedimentation-filter element, the sedimentation-filter element have zinc hydroxide slurry inlet, flocculant entrance, the outlet of zinc-rich slag
It is exported with liquid after filtering, the zinc hydroxide slurry inlet is connected with the zinc hydroxide slurry outlet.
2. the system of processing zincky waste liquor according to claim 1, which is characterized in that in the height direction, the overflow
The lateral wall of slot is higher than the lateral wall of the upper cylinder.
3. it is according to claim 1 processing zincky waste liquor system, which is characterized in that it is described upstream cylinder ratio of height to diameter be
(5-25): 1, preferably 10:1；
Optional, in the height direction, silicon carbide slurry inlet pipe bottom end accounts for described at a distance from the upper cylinder top
The 75-80% of upper height of column.
4. the system of processing zincky waste liquor according to claim 1, which is characterized in that the upstream cylinder and the underflow
The diameter ratio of cylinder is (1.2-2): 1.
5. the system of processing zincky waste liquor according to claim 1, which is characterized in that the cross section face of the transition cylinder
Product is gradually reduced from top to bottom；
Optional, the side wall of the transition cylinder and the angle of vertical direction are 25-35 degree.
6. it is according to claim 1 processing zincky waste liquor system, which is characterized in that it is described upstream cylinder further comprise
Middle outflux, the middle outflux is located on the side wall of the upper cylinder, and is lower than the zinc hydroxide in the height direction
Slurry outlet；
Optional, including multiple middle outfluxes, and the multiple middle outflux is spaced apart on the upper cylinder；
Optional, the multiple middle outflux is spaced apart along the upper height of column direction.
7. the system of processing zincky waste liquor according to claim 1, which is characterized in that described to be rotated into water pipe and the sulphur
Sour calcium slurry outlet is 0-360 degree, preferably 180 degree in the projection angle of horizontal plane；
Optional, the upstream cylinder is made up of the sub- cylinder of more piece flanged joint.
8. it is according to claim 1 processing zincky waste liquor system, which is characterized in that it is described upstream cylinder further comprise
Water supply pipe, the water supply pipe stretches to the inside of the upper cylinder and Open Side Down, and the water supply pipe is located at the mixing slurry
Expect the lower section of inlet pipe bottom end, it is preferred that the water supply pipe is located at the underface of mixed slurry inlet pipe bottom end.
9. a kind of method using system of any of claims 1-8 processing zincky waste liquor, which is characterized in that packet
It includes:
(1) zincky waste liquor is sent with neutralizer into the neutralization device and is neutralized, to obtain mixed slurry；
(2) mixed slurry is sent and carries out classification processing into the grading plant, to obtain zinc hydroxide slurry and sulphur
Sour calcium slurry；
(3) the zinc hydroxide slurry and flocculant are sent to the sedimentation-filter element and successively carry out sedimentation and filtration treatment,
To obtain liquid after zinc-rich slag and filtering.
10. according to the method described in claim 9, it is characterized in that, Zn content is in the zincky waste liquor in step (1)
120-180g/L；
Optional, in step (1), the pH value of the zincky waste liquor is 0.5-5.0；
Optional, in step (2), the partial size of zinc hydroxide is less than 20.0 microns in the zinc hydroxide slurry；
Optional, in step (2), the partial size of calcium sulfate is greater than 30.0 microns in the calcium sulfate slurry；
Optional, in step (3), based on zincky waste liquor described in 1t, the additional amount of the flocculant is 10-50g.
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| CN201910625804.3A CN110304763A (en) | 2019-07-11 | 2019-07-11 | The system and method for handling zincky waste liquor |
| ZA2020/03971A ZA202003971B (en) | 2019-07-11 | 2020-06-30 | System and method for treating zinc-containing waste liquid |
| EP20185116.9A EP3763681B1 (en) | 2019-07-11 | 2020-07-10 | System and method for treating zinc-containing waste liquid |
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| CN110420748A (en) * | 2019-07-11 | 2019-11-08 | 中国恩菲工程技术有限公司 | For being classified the device of ternary precursor |
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