CN105950887A - System and method for treating cadmium-bearing solution - Google Patents
System and method for treating cadmium-bearing solution Download PDFInfo
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- CN105950887A CN105950887A CN201610305874.7A CN201610305874A CN105950887A CN 105950887 A CN105950887 A CN 105950887A CN 201610305874 A CN201610305874 A CN 201610305874A CN 105950887 A CN105950887 A CN 105950887A
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- cadmium
- conveyance conduit
- containing solution
- zinc powder
- pipeline
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- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical group [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 title claims abstract description 120
- 229910052793 cadmium Inorganic materials 0.000 title claims abstract description 119
- 238000000034 method Methods 0.000 title claims abstract description 35
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 78
- WLZRMCYVCSSEQC-UHFFFAOYSA-N cadmium(2+) Chemical compound [Cd+2] WLZRMCYVCSSEQC-UHFFFAOYSA-N 0.000 claims description 23
- 238000006722 reduction reaction Methods 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000002893 slag Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 21
- 238000006243 chemical reaction Methods 0.000 description 16
- 239000012530 fluid Substances 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 230000004044 response Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- QXZUUHYBWMWJHK-UHFFFAOYSA-N [Co].[Ni] Chemical compound [Co].[Ni] QXZUUHYBWMWJHK-UHFFFAOYSA-N 0.000 description 2
- PBHRBFFOJOXGPU-UHFFFAOYSA-N cadmium Chemical compound [Cd].[Cd] PBHRBFFOJOXGPU-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000006396 nitration reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 shown in 1 Chemical compound 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/02—Apparatus therefor
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
- C22B3/46—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes by substitution, e.g. by cementation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
The invention discloses a system and method for treating a cadmium-bearing solution. The system for treating the cadmium-bearing solution comprises a cadmium-bearing solution storage device, a first delivery pipeline, a feeding pump, a second delivery pipeline, a pipeline reactor and a zinc powder supply device, wherein the first delivery pipeline is connected with the cadmium-bearing solution storage device; the feeding pump is connected with the first delivery pipeline; the second delivery pipeline is connected with the feeding pump; the pipeline reactor is connected with the second delivery pipeline; and the zinc powder supply device is connected with at least one of the first delivery pipeline, the second delivery pipeline and the pipeline reactor. By the adoption of the system, the technological parameters in the replacement procedure can be optimized to a great extent, the continuity of original operation is guaranteed, and electric energy consumption and equipment investment caused by extra stirring are omitted.
Description
Technical field
The invention belongs to chemical technology field, specifically, the present invention relates to a kind of system and method processing cadmium-containing solution.
Background technology
In tradition zinc hydrometallurgy clean liquid technique, use zinc powder to carrying out except impurity such as cadmiums, in design one containing cadmium soaks supernatant
As use agitator tank as reaction vessel and promote in the way of strong mixing reaction carrying out.This mode solution and solid zinc powder
Although granule can be fully contacted, but agitator tank stirring intensity is limited, causes the diffusion of solid zinc powder particles surrounding ions relatively
Relatively slow, response speed is relatively slow, and zinc powder utilization rate is on the low side.Meanwhile, longer to cause causing cadmium metal to return in a large number molten the response time.
Therefore, the technique of existing process cadmium-containing solution is further improved.
Summary of the invention
It is contemplated that one of technical problem solved the most to a certain extent in correlation technique.To this end, the one of the present invention
Purpose is to propose a kind of system and method processing cadmium-containing solution, and this system can obtain the optimization displacement operation of high degree
Middle technological parameter, not only ensure that the seriality of original operation, and eliminates power consumption and the equipment that additional stirring causes
Investment.
In one aspect of the invention, the present invention proposes a kind of system processing cadmium-containing solution, according to embodiments of the invention,
This system includes:
Cadmium-containing solution storage device；
First conveyance conduit, described first conveyance conduit is connected with described cadmium-containing solution storage device；
Feed pump, described feed pump is connected with described first conveyance conduit；
Second conveyance conduit, described second conveyance conduit is connected with described feed pump；
Pipeline reactor, described pipeline reactor is connected with described second conveyance conduit；And
Zinc powder feedway, described zinc powder feedway and described first conveyance conduit, described second conveyance conduit and described pipe
In road reactor at least one be connected.
Thus, the system processing cadmium-containing solution according to embodiments of the present invention is by using pipeline reactor to replace agitator tank to carry out
Reaction, in course of reaction, provides power by feed pump so that fluid has high flow velocities, the turbulent flow of generation and turbulent flow energy
High degree reduces solid zinc powder surface diffusion layer thickness, thus improves reacting dynamics condition and improve reaction efficiency, and then
Can significantly improve the displacement efficiency of cadmium in cadmium-containing solution, after using this system, in each displacement operation, technological parameter is permissible simultaneously
Obtain the optimization of high degree, not only ensure that the seriality of original operation, and eliminate the electric energy that additional stirring causes and disappear
Consumption and equipment investment.
It addition, the system of process cadmium-containing solution according to the above embodiment of the present invention can also have a following additional technical characteristic:
In some embodiments of the invention, described pipeline reactor is helical pipe or straight pipeline.Thus, it is possible to significantly carry
The turbulent flow of high fluid and turbulent extent, thus improve the displacement efficiency of cadmium in cadmium-containing solution.
In some embodiments of the invention, the elbow of described helical pipe is steel lining PE part or steel lining F4 part.
In some embodiments of the invention, on described first conveyance conduit and described second pipe, setting independently is at least
One pipe-line mixer.Thus, it is possible to improve the displacement efficiency of cadmium in cadmium-containing solution further.
In another aspect of the present invention, the present invention proposes a kind of method processing cadmium-containing solution.Enforcement according to the present invention
Example, the method is that the system using above-mentioned process cadmium-containing solution is carried out.According to a particular embodiment of the invention, the method bag
Include:
By the cadmium-containing solution in described cadmium-containing solution storage device successively through described first conveyance conduit, described feed pump and described
In second conveyance conduit supply extremely described pipeline reactor；
Zinc powder in described zinc powder feedway is supplied to described first conveyance conduit, described second conveyance conduit and described pipe
At least one in road reactor, in order to make described zinc powder and cadmium ion generation reduction reaction in described cadmium-containing solution, obtain
Cadmium slag and except liquid after cadmium.
Thus, the method processing cadmium-containing solution according to embodiments of the present invention is by using pipeline reactor to replace agitator tank to carry out
Reaction, in course of reaction, provides power by feed pump so that fluid has high flow velocities, the turbulent flow of generation and turbulent flow energy
High degree reduces solid zinc powder surface diffusion layer thickness, thus improves reacting dynamics condition and improve reaction efficiency, and then
Can significantly improve the displacement efficiency of cadmium in cadmium-containing solution, after using the method, in each displacement operation, technological parameter is permissible simultaneously
Obtain the optimization of high degree, not only ensure that the seriality of original operation, and eliminate the electric energy that additional stirring causes and disappear
Consumption and equipment investment.
It addition, the method for process cadmium-containing solution according to the above embodiment of the present invention can also have a following additional technical characteristic:
In some embodiments of the invention, described zinc powder is in solid form or pulp form provides.
In some embodiments of the invention, the temperature of described reduction reaction is 60～90 degrees Celsius.
In some embodiments of the invention, the time of described reduction reaction is 1～10 minute.
In some embodiments of the invention, the use level coefficient of described zinc powder is 0.9～1.15.
The additional aspect of the present invention and advantage will part be given in the following description, and part will become bright from the following description
Aobvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the present invention and advantage will be apparent from from combining the accompanying drawings below description to embodiment
With easy to understand, wherein:
Fig. 1 is the system structure schematic diagram processing cadmium-containing solution according to an embodiment of the invention.
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most identical
Or similar label represents same or similar element or has the element of same or like function.Retouch below with reference to accompanying drawing
The embodiment stated is exemplary, it is intended to is used for explaining the present invention, and is not considered as limiting the invention.
In describing the invention, it is to be understood that term " " center ", " longitudinally ", " laterally ", " length ", " width ",
" thickness ", " on ", D score, "front", "rear", "left", "right", " vertically ", " level ", " top ", " end ", " interior ", " outward ",
Orientation or the position relationship of the instruction such as " clockwise ", " counterclockwise ", " axially ", " radially ", " circumferential " are based on shown in the drawings
Orientation or position relationship, be for only for ease of describe the present invention and simplify describe rather than instruction or hint indication device or
Element must have specific orientation, with specific azimuth configuration and operation, be therefore not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that instruction or hint relative importance or
Person implies the quantity indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include at least one this feature.In describing the invention, " multiple " are meant that at least two, such as two,
Three etc., unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " install ", " being connected ", " connection ", the art such as " fixing "
Language should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or integral；Can be machinery
Connect, it is also possible to be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection within part or the interaction relationship of two elements, unless otherwise clear and definite restriction.Ordinary skill for this area
For personnel, above-mentioned term concrete meaning in the present invention can be understood as the case may be.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature " on " or D score can be
One directly contacts with second feature, or the first and second features are by intermediary mediate contact.And, fisrt feature is
Two features " on ", " top " and " above " but fisrt feature directly over second feature or oblique upper, or be merely representative of first
Characteristic level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be fisrt feature
Immediately below second feature or obliquely downward, or it is merely representative of fisrt feature level height less than second feature.
In one aspect of the invention, the present invention proposes a kind of system processing cadmium-containing solution.With reference to Fig. 1, according to this
The system processing cadmium-containing solution of inventive embodiments includes: cadmium-containing solution storage device the 100, first conveyance conduit 200,
Feed pump the 300, second conveyance conduit 400, pipeline reactor 500 and zinc powder feedway 600.
According to embodiments of the invention, cadmium-containing solution storage device 100 is suitable to store cadmium-containing solution.It should be noted that
" cadmium-containing solution storage device " herein can be for storing the dress of any structure of cadmium-containing solution in prior art
Putting, people in the art can select according to actual needs.
According to embodiments of the invention, the first conveyance conduit 200 is connected with cadmium-containing solution storage device 100, and is suitable to
Cadmium-containing solution is stored in each device that the cadmium-containing solution transport in device is follow-up.
According to a particular embodiment of the invention, the first conveyance conduit 200 can be provided with at least one pipe-line mixer
(not shown), such as, can arrange multiple pipe-line mixer on the first conveyance conduit, contain such that it is able to significantly improve
The turbulent flow of cadmium solution and turbulent extent, and then improve the displacement efficiency of cadmium in cadmium-containing solution.
According to embodiments of the invention, feed pump 300 is connected with the first conveyance conduit 200, and is suitable to improve follow-up second defeated
Send the flow velocity of cadmium-containing solution fluid in pipeline and pipeline reactor, such that it is able to significantly improve turbulent flow and the turbulent flow journey of cadmium-containing solution
Degree, and then improve the displacement efficiency of cadmium in cadmium-containing solution further.It should be noted that those skilled in the art can basis
Actual fluid flow rate needs to select the particular type of feed pump.
According to embodiments of the invention, the second conveyance conduit 400 is connected with feed pump 300, and is suitable to pass through feed pump
Cadmium-containing solution is delivered in follow-up pipeline reactor.
According to a particular embodiment of the invention, the second conveyance conduit 400 can be provided with at least one pipe-line mixer
(not shown), such as, can arrange multiple pipe-line mixer on the second conveyance conduit, contain such that it is able to significantly improve
The turbulent flow of cadmium solution and turbulent extent, and then improve the displacement efficiency of cadmium in cadmium-containing solution further.
According to embodiments of the invention, pipeline reactor 500 is connected with the second conveyance conduit 400, and is adapted so that containing cadmium molten
Cadmium ion in liquid and zinc powder are fully contacted generation reduction reaction, thus obtain serosity, and can use according to actual needs
The means such as filter pressing isolated can remove liquid and cadmium slag after cadmium.
A specific embodiment according to the present invention, pipeline reactor can be helical pipe or straight pipeline.Thus, it is possible to it is aobvious
Write turbulent flow and the turbulent extent improving cadmium-containing solution fluid, thus ensure that the cadmium ion in cadmium-containing solution is fully contacted with zinc powder,
And then the displacement efficiency of cadmium in raising cadmium-containing solution.It should be noted that those skilled in the art can be the most right
The length of pipeline reactor selects, as long as can guarantee that in cadmium-containing solution, cadmium ion and zinc powder fully react.
According to another specific embodiment of the present invention, the elbow of helical pipe can be steel lining PE part or steel lining F4 part.By
This, can significantly improve the service life of pipeline reactor.
According to embodiments of the invention, zinc powder feedway 600 can be with first conveyance conduit the 200, second conveyance conduit 400
With in pipeline reactor 500 at least one be connected, and be suitable to first conveyance conduit the 200, second conveyance conduit 400 and
In pipeline reactor 500 at least one supply zinc powder, such as shown in 1, zinc powder feedway 600 and the first conveyance conduit
200, the second conveyance conduit 400 is all connected with pipeline reactor 500.
According to one embodiment of present invention, in zinc powder feedway, the supply form of zinc powder is not particularly restricted, this area
Technical staff can select according to actual needs, according to a particular embodiment of the invention, zinc powder can in solid form or
Pulp form provides.Thus, it is possible to ensure that zinc powder is fully contacted with cadmium ion in cadmium-containing solution, and then improve further containing cadmium
The displacement efficiency of cadmium in solution.
According to still a further embodiment, the consumption of zinc powder is not particularly restricted, and those skilled in the art are permissible
Selecting according to actual needs, according to a particular embodiment of the invention, the use level coefficient of zinc powder can be 0.9～1.15.
Inventor finds, if the addition of zinc powder is crossed, I haven't seen you for ages causes purification and impurity removal incomplete, and in solution, impure element is high, and if zinc
Powder addition too much can be relatively complete with remove impurity, but cause can be higher containing zinc in solution, and increases zinc powder consumption, increases cost.
According to still another embodiment of the invention, zinc powder is with the temperature of cadmium ion generation reduction reaction in cadmium-containing solution not
Being particularly limited, those skilled in the art can select according to actual needs, according to a particular embodiment of the invention,
Zinc powder can be 60～90 degrees Celsius with the temperature of cadmium ion generation reduction reaction in cadmium-containing solution.Inventor finds, should
At a temperature of can significantly improve the displacement efficiency of cadmium ion in zinc powder and cadmium-containing solution, thus after ensureing that last gained is except cadmium
In liquid, cadmium content is less than 10.5mg/L.
According to still another embodiment of the invention, zinc powder is with the time of cadmium ion generation reduction reaction in cadmium-containing solution not
Being particularly limited, those skilled in the art can select according to actual needs, according to a particular embodiment of the invention,
Zinc powder can be 1～10 minute with the time of cadmium ion generation reduction reaction in cadmium-containing solution.Inventor finds, this time
In the range of can ensure that the cadmium ion in cadmium-containing solution fully reacts with zinc powder, thus improve cadmium in cadmium-containing solution further
Displacement efficiency.
The system processing cadmium-containing solution according to embodiments of the present invention replaces agitator tank to react by employing pipeline reactor,
In course of reaction, providing power by feed pump so that fluid has high flow velocities, the turbulent flow of generation and turbulent flow can very big journeys
Degree reduces solid zinc powder surface diffusion layer thickness, thus improves reacting dynamics condition and improve reaction efficiency, and then can show
Writing and improve the displacement efficiency of cadmium in cadmium-containing solution, after using this system, in each displacement operation, technological parameter can obtain pole simultaneously
The optimization of big degree, not only ensure that the seriality of original operation, and eliminates power consumption that additional stirring causes and set
Standby investment.
In the second aspect of the invention, the present invention proposes a kind of method processing cadmium-containing solution.Enforcement according to the present invention
Example, the method is to use the above-mentioned system processing cadmium-containing solution to carry out.According to a particular embodiment of the invention, the method
Including: cadmium-containing solution is stored the cadmium-containing solution in device and supplies through the first conveyance conduit, feed pump and the second conveyance conduit successively
Give to pipeline reactor；Zinc powder in zinc powder feedway is supplied to the first conveyance conduit, the second conveyance conduit and pipeline
At least one in reactor, in order to make zinc powder and cadmium ion generation reduction reaction in cadmium-containing solution, obtain cadmium slag and except cadmium
Rear liquid.Inventor finds, by using pipeline reactor to replace agitator tank to react, in course of reaction, passes through feed pump
Thering is provided power so that fluid has high flow velocities, the turbulent flow of generation and turbulent flow energy high degree reduce solid zinc powder diffusion into the surface
Layer thickness, thus improve reacting dynamics condition and improve reaction efficiency, and then putting of cadmium in cadmium-containing solution can be significantly improved
Changing efficiency, after using the method, in each displacement operation, technological parameter can obtain the optimization of high degree, not only ensures simultaneously
The seriality of original operation, and eliminate power consumption and the equipment investment that additional stirring causes.It should be noted that
The above-mentioned method being equally applicable to this process cadmium-containing solution for the feature and advantage described by the system of process cadmium-containing solution, this
Place repeats no more.
According to one embodiment of present invention, the supply form of zinc powder is not particularly restricted, and those skilled in the art can root
Select according to being actually needed, according to a particular embodiment of the invention, zinc powder can with in solid form or pulp form provide.
Thus, it is possible to ensure that zinc powder is fully contacted with cadmium ion in cadmium-containing solution, and then improve the displacement of cadmium in cadmium-containing solution further
Efficiency.
According to one embodiment of present invention, in zinc powder feedway, the supply form of zinc powder is not particularly restricted, this area
Technical staff can select according to actual needs, according to a particular embodiment of the invention, zinc powder can in solid form or
Pulp form provides.Thus, it is possible to ensure that zinc powder is fully contacted with cadmium ion in cadmium-containing solution, and then improve further containing cadmium
The displacement efficiency of cadmium in solution.
According to still a further embodiment, the consumption of zinc powder is not particularly restricted, and those skilled in the art are permissible
Selecting according to actual needs, according to a particular embodiment of the invention, the use level coefficient of zinc powder can be 0.9～1.15.
Inventor finds, if the addition of zinc powder is crossed, I haven't seen you for ages causes purification and impurity removal incomplete, and in solution, impure element is high, and if zinc
Powder addition too much can be relatively complete with remove impurity, but cause can be higher containing zinc in solution, and increases zinc powder consumption, increases cost.
According to still another embodiment of the invention, zinc powder is with the temperature of cadmium ion generation reduction reaction in cadmium-containing solution not
Being particularly limited, those skilled in the art can select according to actual needs, according to a particular embodiment of the invention,
Zinc powder can be 60～90 degrees Celsius with the temperature of cadmium ion generation reduction reaction in cadmium-containing solution.Inventor finds, should
At a temperature of can significantly improve the displacement efficiency of cadmium ion in zinc powder and cadmium-containing solution, thus after ensureing that last gained is except cadmium
In liquid, cadmium content is less than 10.5mg/L.
According to still another embodiment of the invention, zinc powder is with the time of cadmium ion generation reduction reaction in cadmium-containing solution not
Being particularly limited, those skilled in the art can select according to actual needs, according to a particular embodiment of the invention,
Zinc powder can be 1～10 minute with the time of cadmium ion generation reduction reaction in cadmium-containing solution.Inventor finds, this time
In the range of can ensure that the cadmium ion in cadmium-containing solution fully reacts with zinc powder, thus improve cadmium in cadmium-containing solution further
Displacement efficiency.
Below with reference to specific embodiment, present invention is described, it should be noted that these embodiments are the most descriptive
, and limit the present invention never in any form.
Embodiment 1
By 1m3Two-stage nitration passes sequentially through the first conveyance conduit, feed pump and the second conveying pipe except the gained cadmium-containing solution after nickel cobalt
Road supplies to pipeline reactor, simultaneously anti-to the first conveyance conduit, the second conveyance conduit and pipeline by zinc powder feedway
Answer supply zinc powder in device so that zinc powder and the cadmium ion in cadmium-containing solution occur reduction reaction, reaction temperature in pipeline reactor
Degree is 80 DEG C, and the response time is 5min, and zinc powder use level coefficient is 0.9, and reaction gained serosity is carried out filter pressing process,
To except in liquid after cadmium cadmium content less than 1mg/L.
Embodiment 2
By 1m3Two-stage nitration passes sequentially through the first conveyance conduit, feed pump and the second conveying pipe except the gained cadmium-containing solution after nickel cobalt
Road supplies to pipeline reactor, simultaneously anti-to the first conveyance conduit, the second conveyance conduit and pipeline by zinc powder feedway
Answer supply zinc powder in device so that zinc powder and the cadmium ion in cadmium-containing solution occur reduction reaction, reaction temperature in pipeline reactor
Degree is 80 DEG C, and the response time is 2min, and zinc powder use level coefficient is 0.9, and reaction gained serosity is carried out filter pressing process,
To except in liquid after cadmium cadmium content less than 10.2mg/L.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " concrete example ",
Or specific features, structure, material or the feature bag that the description of " some examples " etc. means to combine this embodiment or example describes
It is contained at least one embodiment or the example of the present invention.In this manual, to the schematic representation of above-mentioned term necessarily
It is directed to identical embodiment or example.And, the specific features of description, structure, material or feature can be arbitrary
Individual or multiple embodiment or example combine in an appropriate manner.Additionally, in the case of the most conflicting, the skill of this area
The feature of the different embodiments described in this specification or example and different embodiment or example can be combined by art personnel
And combination.
Although above it has been shown and described that embodiments of the invention, it is to be understood that above-described embodiment is exemplary,
Being not considered as limiting the invention, those of ordinary skill in the art within the scope of the invention can be to above-described embodiment
It is changed, revises, replaces and modification.
Claims (9)
1. the system processing cadmium-containing solution, it is characterised in that including:
Cadmium-containing solution storage device；
First conveyance conduit, described first conveyance conduit is connected with described cadmium-containing solution storage device；
Feed pump, described feed pump is connected with described first conveyance conduit；
Second conveyance conduit, described second conveyance conduit is connected with described feed pump；
Pipeline reactor, described pipeline reactor is connected with described second conveyance conduit；And
Zinc powder feedway, described zinc powder feedway and described first conveyance conduit, described second conveyance conduit and described pipe
In road reactor at least one be connected.
System the most according to claim 1, it is characterised in that described pipeline reactor is helical pipe or straight pipeline.
System the most according to claim 2, it is characterised in that the elbow of described helical pipe is steel lining PE part or steel
Lining F4 part.
4. according to the system according to any one of right 1-3, it is characterised in that described first conveyance conduit and described second pipe
On road independently at least one pipe-line mixer is set.
5. utilize the method that the system processing cadmium-containing solution according to any one of claim 1-4 processes cadmium-containing solution,
It is characterized in that, including:
By the cadmium-containing solution in described cadmium-containing solution storage device successively through described first conveyance conduit, described feed pump and described
In second conveyance conduit supply extremely described pipeline reactor；
Zinc powder in described zinc powder feedway is supplied to described first conveyance conduit, described second conveyance conduit and described pipe
At least one in road reactor, in order to make described zinc powder and cadmium ion generation reduction reaction in described cadmium-containing solution, obtain
Cadmium slag and except liquid after cadmium.
Method the most according to claim 5, it is characterised in that described zinc powder is in solid form or pulp form provides.
7. according to the method described in claim 5 or 6, it is characterised in that the temperature of described reduction reaction is 60～90 Celsius
Degree.
Method the most according to claim 7, it is characterised in that the time of described reduction reaction is 1～10 minute.
Method the most according to claim 6, it is characterised in that the use level coefficient of described zinc powder is 0.9～1.15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610305874.7A CN105950887A (en) | 2016-05-10 | 2016-05-10 | System and method for treating cadmium-bearing solution |
| PCT/CN2017/078657 WO2017193725A1 (en) | 2016-05-10 | 2017-03-29 | System and method for treating cadmium-containing solution |
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| CN201610305874.7A CN105950887A (en) | 2016-05-10 | 2016-05-10 | System and method for treating cadmium-bearing solution |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017193725A1 (en) * | 2016-05-10 | 2017-11-16 | 中国恩菲工程技术有限公司 | System and method for treating cadmium-containing solution |
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| CN104561547A (en) * | 2014-12-23 | 2015-04-29 | 云南锡业股份有限公司 | Method for reducing zinc powder consumption in process of purifying zinc sulfate solution |
| CN104911349A (en) * | 2015-04-29 | 2015-09-16 | 云南锡业股份有限公司 | Method for one segment leaching recovery of valuable metals in zinc system copper cadmium slag |
| CN105950887A (en) * | 2016-05-10 | 2016-09-21 | 中国恩菲工程技术有限公司 | System and method for treating cadmium-bearing solution |
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| EP0134053A2 (en) * | 1983-08-02 | 1985-03-13 | AGIP S.p.A. | Process for purifying solutions of zinc sulphate |
| CN1530452A (en) * | 2003-03-14 | 2004-09-22 | 中国有色工程设计研究总院 | Method and apparatus for removing copper, cadmium and cobalt from zinc sulfate solution |
| CN102220493A (en) * | 2011-07-27 | 2011-10-19 | 昆明冶金研究院 | Method and device for purifying zinc sulfate solution based on action of cavitation effect |
| CN102719671A (en) * | 2012-07-06 | 2012-10-10 | 中南大学 | Method and device for deeply removing copper of nickel thiocarbonate from nickel-containing solution |
| CN202658207U (en) * | 2012-07-06 | 2013-01-09 | 中南大学 | Device for deeply removing copper from nickel-containing solution by nickel thiocarbonate |
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| WO2017193725A1 (en) * | 2016-05-10 | 2017-11-16 | 中国恩菲工程技术有限公司 | System and method for treating cadmium-containing solution |
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| WO2017193725A1 (en) | 2017-11-16 |
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