CN106435214A - Method for removing magnesium in zinc smelting system - Google Patents
Method for removing magnesium in zinc smelting system Download PDFInfo
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- CN106435214A CN106435214A CN201611000216.3A CN201611000216A CN106435214A CN 106435214 A CN106435214 A CN 106435214A CN 201611000216 A CN201611000216 A CN 201611000216A CN 106435214 A CN106435214 A CN 106435214A
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- demagging
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- 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
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
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- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
Abstract
The invention relates to a method for removing magnesium in a zinc smelting system, and belongs to the technical field of wet metallurgy. The method for removing magnesium in the zinc smelting system comprises the specific steps of: (1) fine grinding; (2) dilution of electrolysis back liquid; (3) preimpregnation of magnesium from zinc calcine; (4) zinc recovery; and (5) precipitation of magnesium. The method generates no drained waste water; the magnesium is discharged as a form of calcium magnesium slag, and can serve as a cement production raw material; the principle thereof is to preimpregnate out the magnesium in the zinc calcine by the electrolysis back liquid; the zinc oxide in the calcine and the zinc sulfate in solution generate alkaline zinc sulfate precipitates; the generated alkaline zinc sulfate is directly returned to an impregnation procedure, and the magnesium is remained in the solution, so that the electrolysis back liquid is branched in the system when the calcine adopts the electrolysis back liquid to preimpregnate and remove the magnesium, and the effect of dual magnesium removal is achieved; and less lime is added in zinc settling back liquid to neutralize and precipitate the magnesium; and the magnesium-precipitated solution serves as a diluent and a neutralizer to return to the magnesium preimpregnation and zinc settling procedures.
Description
Technical field
The present invention relates to a kind of method for going demagging in zinc abstraction system, belongs to technical field of wet metallurgy.
Background technology
In Zinc Hydrometallurgy Process, carried secretly the continuous circulation collection of the magnesium that comes in, if do not adopted an effective measure, body by raw material
In system, content of magnesium can be continuously increased, and can reach more than 40g/L so that magnesium is easily tied in the relatively low pipeline of temperature or chamber wall
Crystalline substance, improves blocking risk, causes potential threat to zinc abstraction equipment, while high magnesium ion concentration can increase solution viscosity, in electricity
Reduce current efficiency in solution preocess, increase energy consumption.It is thus desirable to effective way is found, the magnesium being enriched with is cleared out of it is in solution
System, so as to ensure the balance of magnesium in zinc abstraction system.
At present conventional have except magnesium method：Crystallisation by cooling method, the fluoride sedimentation method and open circuit neutralization precipitation method.Crystallisation by cooling
The principle of method demagging is the change based on magnesium salt dissolubility, when content of magnesium is close to saturation, using pressure or Temperature fall, Mg2+
Then with MgSO4Crystallization is separated out.But in practical operation, often there is substantial amounts of zinc sulfate, the salt such as calcium sulfate is while precipitation, makes
Demagging effect is undesirable, while also resulting in a large amount of losses of zinc.
Fluoride is to utilize MgF except magnesium processes2The feature of dissolubility very little, adds HF, ZnF2, the fluorine-containing reagent such as NaF can remove
Remove magnesium ion in solution.Although having positive effect to demagging using the fluoride sedimentation method, in solution, content of fluoride ion can rise
Height, during Zinc electrolysis, fluorion can destroy the pellumina of minus plate, so that precipitation zinc is sticked together with aluminium sheet, cause zinc
Skin is difficult to peel off, and causes cathode aluminum plate consumption to increase.
Open circuit neutralization is to add Calx after electrolysis in liquid to be neutralized precipitation except magnesium method, make zinc, magnesium plasma all from
It is precipitated out in solution.The method not only consumes large quantities of lime, produces a lot of waste residues and waste water, while causing the damage of a large amount of zinc
Cost recovery of becoming estranged is raised.
Content of the invention
For the deficiency that background technology is present, the present invention proposes a kind of method for going demagging in zinc abstraction system, it is not necessary to
Other reagents and impurity element is added, only just the zinc in open circuit solution is precipitated by zinc calcine, generating basic zinc sulfate can
Be returned directly to leach operation, the loss very little of zinc, simple to operate, reagent consumption and waste residue yield few.
To achieve these goals, the present invention is achieved through the following technical solutions：
The method of demagging is gone to include step in detail below in described zinc abstraction system：
(1) fine grinding：By required zinc calcine fine grinding so that particle mean size is less than 200 microns；
(2) electrolytic liquid is diluted：After the magnesium sinking that magnesium sinking operation is produced, liquid is mixed with the electrolytic liquid of open circuit, dilution electrolysis
Liquid afterwards；
(3) zinc calcine preextraction magnesium：Zinc calcine after step (1) fine grinding is obtained electrolytic liquid preimpregnation by step (2)
Go out magnesium；
(4) zinc is reclaimed：The solution that step (3) is obtained is processed and reclaims zinc, and reaction equation is as follows；
ZnSO4+3ZnO+8H2O=ZnSO4·3Zn(OH)2·5H2O；
(5) magnesium is precipitated：Liquid filtration treatment precipitation magnesium after the heavy zinc that step (4) is obtained.
Further, the mixing of furnace bottom calcining, flue dust after zinc calcine is fluidized bed roasting in described step (1) or both
Thing.
Further, in described step (2) after the electrolytic liquid of open circuit and the magnesium sinking for returning liquid mixed proportion be：2～8.
Further, electrolytic liquid sulfuric acid content 150-160g/L, Zn content 50-60g/L in described step (2), magnesium contains
Amount 15-40g/L.
Further, in described step (3), after preextraction, pH value of solution is that 5～5.5, per liter open circuit electrolytic liquid calcining is added
Measure as 0.1～3kg, preextraction reaction magnesium leaching efficiency be.
Further, 20～80 DEG C of zinc reaction temperature sunk in described step (4), response time 1-3 hour, solution ph is
5.5～6.5, it is 1～4kg that per liter of electrolytic liquid adds the amount of calcining, and reaction zinc deposition efficiency is more than 90%, and after heavy zinc, liquid zinc contains
Amount is less than 3g/L, 4～7g/L of content of magnesium.
Further, in described step (5), magnesium sinking reaction end pH value is 11～12,40～50 DEG C of reaction temperature, magnesium sinking
Reaction additives are Calx or lime cream, and the Calx calcium oxide content for being added is not less than 85%, and addition is every heave
Liquid 20-60g/L after zinc.
Further, in described step (5), reaction magnesium precipitate efficiency is more than 98%, and after magnesium sinking, liquid Zn content is less than 5mg/L,
Content of magnesium is less than 10mg/L.
Further, the filter method is filter pressing.
Further, in described step (5) the open circuit efficiency of magnesium be.
In the present invention unless otherwise indicated, ratio, percentage ratio is mass ratio.
Beneficial effects of the present invention：
The method for being provided by the present invention, it may not be necessary to add other reagents and impurity element, only leans on zinc calcine just will
Zinc in open circuit solution precipitates, and generates basic zinc sulfate and can be returned directly to leach operation, the loss very little of zinc, operation
Simply, reagent consumption and waste residue yield are few.
The present invention does not produce efflux wastewater, and magnesium is discharged in the form of calcium and magnesium slag, can be used as cement producting material, and its principle is
Using the magnesium in electrolytic liquid preextraction zinc calcine, the zinc sulfate in calcining in zinc oxide and solution generates basic zinc sulfate and sinks
Forming sediment, the basic zinc sulfate of generation directly returns leaching operation, and magnesium is stayed in the solution, makes calcining de-magging be presoaked using electrolytic liquid
While so that electrolytic liquid is opened a way from system, serve the effect of dual demagging；After heavy zinc, liquid adds the neutralization of a small amount of Calx again
Precipitation magnesium, after magnesium sinking, solution returns to preimpregnation magnesium and heavy zinc operation as diluent and nertralizer.
Description of the drawings
The schematic flow sheet of demagging is removed for the present invention in the zinc solution that accompanying drawing 1 is provided.
Specific embodiment
Below in conjunction with embodiments of the invention and accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments, is based on
Embodiment in the present invention, it is all other that this area control technical staff is obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
Zinc calcine preimpregnation magnesium test：Take the electrolytic liquid of 1L zinc electrolysis generation, wherein 60g/L containing zinc, magnesium 23.3g/L, sulfur
Sour 160g/L；Liquid 3L after the magnesium sinking for adding magnesium sinking operation to produce, liquid 1mg/L containing zinc, magnesium 10mg/L after magnesium sinking.Mixed liquor is placed in
In 2L beaker, solution temperature to 60 DEG C in beaker is adjusted with water-bath, using mechanical agitation mode.Particle mean size is added to be 22 μm
Furnace bottom zinc calcine 250g, calcining content of magnesium is after reaction 30 minutes, filters, dries and obtain dry slag 69g.As table 1
Shown, the Zn content in solution is 38.1g/L, content of magnesium 6.07g/L, content of magnesium 0.11% in dry slag.Result of the test shows,
Calcining addition 250g/L electrolytic liquid, under the conditions of 60 DEG C of reaction temperature, in calcining, 92.77% magnesium is reduced by sulfuric acid leaching
Enter the magnesium of zinc abstraction system.
1 zinc calcine preextraction magnesium test data of table
Embodiment 2
Zinc calcine preimpregnation magnesium test：Take the electrolytic liquid of 1L zinc electrolysis generation, wherein 60g/L containing zinc, magnesium 23.3g/L, sulfur
Sour 160g/L；Liquid 3L after the magnesium sinking for adding magnesium sinking operation to produce, liquid 1mg/L containing zinc, magnesium 10mg/L after magnesium sinking.Mixed liquor is placed in
In 2L beaker, solution temperature to 60 DEG C in beaker is adjusted with water-bath, using mechanical agitation mode.Particle mean size is added to be 22 μm
Furnace bottom zinc calcine 500g, calcining content of magnesium is after reaction 30 minutes, filters, dries and obtain dry slag 315g.As table
Shown in 2, the Zn content after reaction in solution is 40.3g/L, content of magnesium 6.02g/L, content of magnesium 0.18% in dry slag.Result of the test
Show, in calcining addition 500g/L electrolytic liquid, under the conditions of 60 DEG C of reaction temperature, in calcining, 73% magnesium is presoaked by sulphuric acid
Go out, reduce the magnesium for entering zinc abstraction system.
2 zinc calcine preextraction magnesium test data of table
Embodiment 3
Heavy zinc test：Take the electrolytic liquid of 100ml zinc electrolysis generation, wherein 60g/L containing zinc, magnesium 23.3g/L, sulphuric acid
160g/L；Liquid 300ml after the magnesium sinking for adding magnesium sinking operation to produce, liquid 1mg/L containing zinc, magnesium 10mg/L after magnesium sinking.Mixed liquor is put
In 1L beaker, solution temperature to 60 DEG C in beaker is adjusted with water-bath, using mechanical agitation mode.Test parameterss and result are such as
Shown in table 3, the zinc calcine 15.2g that particle mean size is 8 μm is added, titration detection Zn content is 35.6g/L, continues to add calcining
156g, stirs 1 hour, sample analysis, and solution Zn content is 23.3g/L, and continuing interpolation calcining reaches total calcining addition
200g, stirs 1 hour, sample analysis, and solution Zn content is 15.4g/L, and it is 230g to continue add zinc calcine to make total addition level, stirs
Mix 1 hour, sample analysis, the Zn content in solution is 0.66g/L.In reaction end solution, content of magnesium is 5.93g/L.Test knot
Fruit shows, in calcining addition 2.3kg/L electrolytic liquid, response time 3h, under the conditions of 60 DEG C of reaction temperature, zinc can be with 8 μm
Zinc calcine generates basic zinc sulfate precipitation, as zinc calcine addition is continuously increased, Zn content continuous decrease, and zinc rate of deposition is
95.6%.
3 zinc recovering test data of table
Embodiment 4
Heavy zinc test：Take the electrolytic liquid of 100ml zinc electrolysis generation, wherein 60g/L containing zinc, magnesium 23.3g/L, sulphuric acid
160g/L；Liquid 300ml after the magnesium sinking for adding magnesium sinking operation to produce, liquid 1mg/L containing zinc, magnesium 10mg/L after magnesium sinking.Mixed liquor is put
In 1L beaker, solution temperature to 60 DEG C in beaker is adjusted with water-bath, using mechanical agitation mode.Test parameterss and result are such as
Shown in table 4, the zinc calcine 16.5g that particle mean size is 22 μm is added, detection Zn content is 36.3g/L, continues to add calcining 156g,
Stirring 1 hour, sample analysis, solution Zn content is 19.6g/L, and continuing interpolation calcining makes total calcining addition reach 200g, stirs
Mix 1 hour, sample analysis, solution Zn content is 8.7g/L, it is 230g to continue add zinc calcine to make total addition level, stirs 1 hour,
Sample analysis, the Zn content in solution is 1.21g/L.Result of the test shows, in calcining addition 2.3kg/L- electrolytic liquid, instead
3h between seasonable, under the conditions of 60 DEG C of reaction temperature, zinc equally can generate basic zinc sulfate precipitation with 22 μm of zinc calcines, as zinc is roasted
Sand addition is continuously increased, Zn content continuous decrease, and reaction end zinc rate of deposition is 91.9%.
4 zinc recovering test data of table
Embodiment 5
Heavy zinc test：Take the electrolytic liquid of 10L zinc electrolysis generation, wherein 60g/L containing zinc, magnesium 23.3g/L, sulphuric acid 160g/
L；Liquid 30L after the magnesium sinking for adding magnesium sinking operation to produce, liquid 1mg/L containing zinc, magnesium 10mg/L after magnesium sinking.Mixed liquor is placed in 100L anti-
Answer in kettle, with Electric heating control solution temperature at 50 DEG C, using mechanical agitation mode.Test parameterss and result such as 5 institute of table
Show, the zinc calcine 26kg that particle mean size is 22 μm is once added, after reaction 40 minutes, sample analysis, the Zn content in solution
For 12.7g/L.In total reaction time 60 minutes, sample analysis, the Zn content in solution be.In 80 points of total reaction time
Clock, sample analysis, the Zn content in solution is 7.2g/L.In total reaction time 100 minutes, sample analysis, the zinc in solution contains
Measure as 3.5g/L.In total reaction time 150 minutes, sample analysis, the Zn content in solution be.Result of the test shows,
In calcining addition 2.6kg/L- electrolytic liquid, under the conditions of 50 DEG C of reaction temperature, with the carrying out in response time, Zn content by
Gradually decline, after reacting 2.5 hours, Zn content is 2.5g/L, reaction end zinc rate of deposition is 83.3%.
5 zinc recovering test data of table
Embodiment 6
Heavy zinc test：Take 1m3The electrolytic liquid that zinc electrolysis are produced, wherein 60g/L containing zinc, magnesium 23.3g/L, sulphuric acid 160g/
L；Liquid 3m after the magnesium sinking for adding magnesium sinking operation to produce3, liquid 1mg/L containing zinc after magnesium sinking, magnesium 10mg/L.Mixed liquor is placed in reactor
In, with electrical heating mode of heating control solution temperature at 60 DEG C, using mechanical agitation mode.Test parameterss and result such as 6 institute of table
Show, the zinc calcine 2.6t that particle mean size is 22 μm is once added, after reaction 40 minutes, sample analysis, the Zn content in solution
For 10.4g/L.In total reaction time 60 minutes, sample analysis, the Zn content in solution be.In 80 points of total reaction time
Clock, sample analysis, the Zn content in solution is 6.2g/L.In total reaction time 100 minutes, sample analysis, the zinc in solution contains
Measure as 3.6g/L.In total reaction time 150 minutes, sample analysis, the Zn content in solution be.Result of the test shows,
In calcining addition 2.6kg/L electrolytic liquid, under the conditions of 60 DEG C of reaction temperature, with the carrying out in response time, Zn content by
Gradually decline, after reacting 2.5 hours, Zn content has been about 1g/L, reaction end zinc rate of deposition is 93.1%.
6 zinc recovering test data of table
Embodiment 7
Magnesium sinking is tested：After taking the heavy zinc of 1L, liquid is used as magnesium sinking test raw material, wherein content of magnesium 6.24g/L, Zn content 1.34g/
L.With Calx come magnesium in precipitation solution and zinc, calcium oxide content 87% wherein in Calx.Liquid after heavy zinc is placed in 2L beaker
In, 45 DEG C of solution temperature is adjusted with water-bath, using mechanical agitation mode.Calx 39g is disposably added, and Calx addition ratio is
39g/L solution, solution ph 11, in 2 hours response time, it is filtrated to get calcium and magnesium slag 112g, filtrate 940ml.Result of the test such as table 7
Shown, in lime adding amount 39g/L, temperature 45 C, under the conditions of response time 2h, in solution, content of magnesium is dropped to from 6.24g/L
0.01g/L.In solution, Zn content also drops to 0.001g/L from 1.34g/L.In reaction, magnesium precipitate efficiency is 99.8%.
Table 7 precipitates magnesium test data
Embodiment 8
Magnesium sinking is tested：After taking the heavy zinc of 10L, liquid is used as magnesium sinking test raw material, wherein content of magnesium 6.33g/L, Zn content 1.87g/
L.With Calx come magnesium in precipitation solution and zinc, calcium oxide content 87% wherein in Calx.Liquid after heavy zinc is placed in 100L anti-
Answer in kettle, with Electric heating control solution temperature at 45 DEG C, using mechanical agitation mode.Disposable addition Calx 350g, stone
Ash adds ratio for 35g/L solution, solution ph 11,2.5 hours response time, is filtrated to get calcium and magnesium slag 1050g, filtrate 9.25L.
Result of the test is as shown in table 8, in lime adding amount 35g/L, temperature 45 C, and under the conditions of response time 2.5h, content of magnesium in solution
0.035g/L is dropped to from 6.33g/L.In solution, Zn content also drops to 0.001g/L from 1.87g/L.In reaction, magnesium precipitate efficiency
For 99.4%.
Table 8 precipitates magnesium test data
Embodiment 9
Preimpregnation magnesium, heavy zinc, magnesium sinking long run test：In industrial reaction groove, 87.88m is taken3After the electrolysis that zinc electrolysis are produced
Liquid, wherein 60g/L containing zinc, magnesium 23.3g/L, sulphuric acid 160g/L；Liquid 263.6m after the magnesium sinking for adding magnesium sinking operation to produce3, magnesium sinking
Liquid 1mg/L containing zinc, magnesium 10mg/L afterwards.With steam mode of heating, solution is heated to 60 DEG C, using mechanical agitation mode.Once plus
Enter the zinc calcine 202.1t that particle mean size is 22 μm, calcining adds ratio for 2.3kg/L electrolytic liquid.After reaction 2.5 hours, adopt
Filtered with pressure filter, obtained 271.1t basic zinc sulfate slag and 281.2m3Filtrate (liquid after heavy zinc).Cadmia moisture content
20%, containing magnesium 0.23%.Result of the test is as shown in table 9, and the preextraction rate for being computed magnesium in calcining is 41.2%.After heavy zinc in liquid
Zn content is 1.82g/L, and with filtrate, zinc content calculates zinc recovery as 90.3%.With gained amount of filtrate and initial soln amount
It is 80% that ratio meter calculates magnesium open circuit efficiency.Aborning, in order to reduce liquid treating capacity before follow-up magnesium sinking, it is not recommended that adopt wash water
Basic zinc sulfate precipitation is washed, but by the means of filter pressing, more filtrates is obtained, to improve Mg open circuit efficiency.
Take 281m3After heavy zinc, liquid is used as magnesium sinking test raw material, wherein content of magnesium 6.94g/L, Zn content 1.82g/L.Once
Property add lime cream 26.34t, aqueous 63%, control solution temperature at 45 DEG C, 2 hours response time, reaction end solution ph
11, wet calcium and magnesium slag 31.49t, filtrate 290.6m is obtained after filtration3.Result of the test shows, in temperature 45 C, response time 2h bar
Under part, in solution, content of magnesium drops to 0.021g/L from 6.94g/L.In solution, Zn content also drops to 0.001g/L from 1.82g/L.
In reaction, magnesium precipitate efficiency is 99.7%.
Table 9 presoaks magnesium, heavy zinc, magnesium sinking long run test
Can be seen that from embodiment 1-9 and table 1-9, remove in a kind of zinc abstraction system that the present invention is provided and method is not obtained, lead to
The method for crossing present invention offer, it may not be necessary to add other reagents and impurity element, only will just open a way in solution by zinc calcine
Zinc precipitate, generate basic zinc sulfate can be returned directly to leach operation, the loss very little of zinc, simple to operate, reagent
Consume and waste residue yield is few.
Finally illustrate, preferred embodiment above is only unrestricted in order to technical scheme to be described, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
Various changes are made in form and to which in details, without departing from claims of the present invention limited range.
Claims (10)
1. a kind of method for going demagging in zinc abstraction system, it is characterised in that：The method for going demagging in described zinc abstraction system
Including step in detail below：
（1）Fine grinding：By required zinc calcine fine grinding so that particle mean size is less than 10-200 micron；
（2）Dilution electrolytic liquid：After the magnesium sinking that magnesium sinking operation is produced, liquid is mixed with the electrolytic liquid of open circuit, after dilution electrolysis
Liquid；
（3）Zinc calcine preextraction magnesium：By step（1）Zinc calcine after fine grinding passes through step（2）Obtain electrolytic liquid preextraction magnesium；
（4）Reclaim zinc：By step（3）The solution for obtaining is processed and reclaims zinc, and reaction equation is as follows；
ZnSO4+3ZnO+8H2O=ZnSO4·3Zn(OH)2·5H2O；
（5）Precipitation magnesium：By step（4）Liquid filtration treatment precipitation magnesium after the heavy zinc for obtaining.
2. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：Described step
（1）Middle zinc calcine is the mixture of the furnace bottom calcining after fluidized bed roasting, flue dust or both.
3. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：Described step
（2）After the electrolytic liquid of middle open circuit and magnesium sinking liquid mixed proportion be：2～8.
4. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：Described step
（2）Middle electrolytic liquid sulfuric acid content 150-160g/L, Zn content 50-60g/L, content of magnesium 15-40g/L.
5. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：Described step
（3）After middle preextraction, pH value of solution is 5～5.5, and per liter of open circuit electrolytic liquid calcining addition is that 0.1～3kg, preextraction reacts magnesium
Leaching efficiency is 40～90%.
6. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：Described step
（4）In sink 20～80 DEG C of zinc reaction temperature, response time 1-3 hour, solution ph is that 5.5～6.5, per liter electrolytic liquid is added
The amount of calcining is 1～4kg, and reaction zinc deposition efficiency is more than 90%, and after heavy zinc, liquid Zn content is less than 3g/L, 4～7g/L of content of magnesium.
7. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：Described step
（5）Middle magnesium sinking reaction end pH value is 11～12,40～50 DEG C of reaction temperature, and magnesium sinking reaction additives are Calx or Calx
Breast, the Calx calcium oxide content for being added is not less than 85%, and addition is liquid 20-60g/L after every heave zinc.
8. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：Described step
（5）Middle reaction magnesium precipitate efficiency is more than 98%, and after magnesium sinking, liquid Zn content is less than 5mg/L, and content of magnesium is less than 10mg/L.
9. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：The filter method
For filter pressing.
10. the method for going demagging in a kind of zinc abstraction system according to claim 1, it is characterised in that：The step（5）
The open circuit efficiency of middle magnesium is 60-90%.
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Cited By (9)
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| CN107904414A (en) * | 2017-11-21 | 2018-04-13 | 四环锌锗科技股份有限公司 | A kind of method that magnesium is arranged in solution of zinc sulfate |
| CN108624755A (en) * | 2018-06-11 | 2018-10-09 | 云南驰宏资源综合利用有限公司 | A kind of method of impurity Mg, Cl open circuits in zinc hydrometallurgy system |
| CN108796242A (en) * | 2018-06-20 | 2018-11-13 | 云南驰宏资源综合利用有限公司 | A kind of method of zinc gray recycling |
| CN109867463A (en) * | 2019-03-04 | 2019-06-11 | 西南科技大学 | A kind of method that magnesium resource utilizes in Zinc hydrometallurgy process |
| CN110735048A (en) * | 2019-11-21 | 2020-01-31 | 株洲冶炼集团股份有限公司 | Method for removing magnesium and fluorine from zinc-containing solution of wet-method zinc smelting |
| CN111485119A (en) * | 2020-03-18 | 2020-08-04 | 云南云铜锌业股份有限公司 | Method and device for treating new wet-process zinc smelting liquid |
| CN112301381A (en) * | 2020-10-16 | 2021-02-02 | 云南驰宏锌锗股份有限公司 | Method for removing magnesium ions from zinc electrolyte |
| CN113355517A (en) * | 2021-05-31 | 2021-09-07 | 云南罗平锌电股份有限公司 | Method for harmlessly treating and recycling magnesium fluoride waste acid in zinc smelting process |
| CN114480842A (en) * | 2021-12-30 | 2022-05-13 | 深圳市中金岭南有色金属股份有限公司丹霞冶炼厂 | Method and device for removing magnesium from zinc smelting zinc sulfate solution |
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| CN107904414A (en) * | 2017-11-21 | 2018-04-13 | 四环锌锗科技股份有限公司 | A kind of method that magnesium is arranged in solution of zinc sulfate |
| CN108624755A (en) * | 2018-06-11 | 2018-10-09 | 云南驰宏资源综合利用有限公司 | A kind of method of impurity Mg, Cl open circuits in zinc hydrometallurgy system |
| CN108796242A (en) * | 2018-06-20 | 2018-11-13 | 云南驰宏资源综合利用有限公司 | A kind of method of zinc gray recycling |
| CN109867463A (en) * | 2019-03-04 | 2019-06-11 | 西南科技大学 | A kind of method that magnesium resource utilizes in Zinc hydrometallurgy process |
| CN109867463B (en) * | 2019-03-04 | 2021-12-03 | 西南科技大学 | Method for resource utilization of magnesium in zinc hydrometallurgy process |
| CN110735048A (en) * | 2019-11-21 | 2020-01-31 | 株洲冶炼集团股份有限公司 | Method for removing magnesium and fluorine from zinc-containing solution of wet-method zinc smelting |
| CN111485119A (en) * | 2020-03-18 | 2020-08-04 | 云南云铜锌业股份有限公司 | Method and device for treating new wet-process zinc smelting liquid |
| CN112301381A (en) * | 2020-10-16 | 2021-02-02 | 云南驰宏锌锗股份有限公司 | Method for removing magnesium ions from zinc electrolyte |
| CN112301381B (en) * | 2020-10-16 | 2023-06-09 | 云南驰宏锌锗股份有限公司 | Method for removing magnesium ions from zinc electrolyte |
| CN113355517A (en) * | 2021-05-31 | 2021-09-07 | 云南罗平锌电股份有限公司 | Method for harmlessly treating and recycling magnesium fluoride waste acid in zinc smelting process |
| CN114480842A (en) * | 2021-12-30 | 2022-05-13 | 深圳市中金岭南有色金属股份有限公司丹霞冶炼厂 | Method and device for removing magnesium from zinc smelting zinc sulfate solution |
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