CN111485119A - Method and device for treating new wet-process zinc smelting liquid - Google Patents
Method and device for treating new wet-process zinc smelting liquid Download PDFInfo
- Publication number
- CN111485119A CN111485119A CN202010191906.1A CN202010191906A CN111485119A CN 111485119 A CN111485119 A CN 111485119A CN 202010191906 A CN202010191906 A CN 202010191906A CN 111485119 A CN111485119 A CN 111485119A
- Authority
- CN
- China
- Prior art keywords
- new
- new liquid
- zinc
- liquid
- storage tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 243
- 239000011701 zinc Substances 0.000 title claims abstract description 96
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 94
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 89
- 238000003723 Smelting Methods 0.000 title abstract description 25
- 238000002425 crystallisation Methods 0.000 claims abstract description 40
- 238000009854 hydrometallurgy Methods 0.000 claims abstract description 32
- 238000001953 recrystallisation Methods 0.000 claims abstract description 27
- 239000006228 supernatant Substances 0.000 claims abstract description 26
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 14
- 239000013081 microcrystal Substances 0.000 claims abstract description 9
- 230000008025 crystallization Effects 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims description 79
- 239000000243 solution Substances 0.000 claims description 44
- 239000011777 magnesium Substances 0.000 claims description 19
- 238000001816 cooling Methods 0.000 claims description 17
- 239000008151 electrolyte solution Substances 0.000 claims description 17
- 229910052749 magnesium Inorganic materials 0.000 claims description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 4
- 238000009858 zinc metallurgy Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 21
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract description 19
- 229910001425 magnesium ion Inorganic materials 0.000 abstract description 19
- PGTXKIZLOWULDJ-UHFFFAOYSA-N [Mg].[Zn] Chemical compound [Mg].[Zn] PGTXKIZLOWULDJ-UHFFFAOYSA-N 0.000 abstract description 13
- 239000002893 slag Substances 0.000 abstract description 10
- 238000005265 energy consumption Methods 0.000 abstract description 8
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 40
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 description 31
- 229960001763 zinc sulfate Drugs 0.000 description 30
- 229910000368 zinc sulfate Inorganic materials 0.000 description 30
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 20
- 235000019341 magnesium sulphate Nutrition 0.000 description 20
- 239000013078 crystal Substances 0.000 description 10
- 239000005083 Zinc sulfide Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000002441 reversible effect Effects 0.000 description 4
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 229910052984 zinc sulfide Inorganic materials 0.000 description 4
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002500 ions Chemical class 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
- 239000002245 particle Substances 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 150000003752 zinc compounds Chemical class 0.000 description 1
- 235000009529 zinc sulphate Nutrition 0.000 description 1
- 239000011686 zinc sulphate Substances 0.000 description 1
Images
Classifications
-
- 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
- C22B19/26—Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/16—Electrolytic production, recovery or refining of metals by electrolysis of solutions of zinc, cadmium or mercury
-
- 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
Abstract
The invention discloses a method and a device for treating a new zinc hydrometallurgy liquid. The method for treating the new wet-process zinc smelting liquid comprises the following steps: adjusting the concentration of zinc ions in the new liquid and adjusting the temperature of the new liquid; standing the new liquid to perform micro-crystallization on the new liquid to obtain new liquid containing micro-crystals; standing the new solution containing the micro-crystals to recrystallize the new solution to obtain a bottom flow and a supernatant; and taking the supernatant and conveying the supernatant to zinc electrolysis. According to the method for treating the new wet-process zinc smelting liquid, the new liquid is subjected to micro crystallization and recrystallization by adjusting the concentration of zinc ions in the new liquid and adjusting the temperature of the new liquid, so that magnesium ions in the new liquid are crystallized to form zinc-magnesium slag which is enriched in the bottom flow of the new liquid, the content of magnesium ions in the supernatant of the new liquid is reduced, the conventional wet-process zinc smelting process is not required to be changed, the new liquid is not required to be subjected to pressurization treatment, and the energy consumption required by treating the new wet-process zinc smelting liquid is effectively reduced.
Description
Technical Field
The invention relates to the field of zinc smelting, in particular to a method and a device for treating a new zinc hydrometallurgy liquid.
Background
The zinc hydrometallurgy of zinc refers to a process of dissolving zinc in zinc calcine or other zinc sulfide materials and zinc in zinc sulfide concentrate in water solution and extracting metallic zinc or zinc compounds from the zinc calcine or other zinc sulfide materials and zinc sulfide concentrate, and is a main method of modern zinc smelting. Consists of three large links of zinc leaching, purification from zinc solution and zinc electrolytic deposition. The zinc hydrometallurgy mainly comprises the working procedures of roasting, leaching, leachate purification, electrodeposition and the like.
In the process of zinc hydrometallurgy, if the concentration of magnesium ions in the new electrolytic solution is always operated at a high position, the whole production process is greatly influenced. Particularly, in high current density electrolysis, the magnesium ions increase the resistance and viscosity of the circulating liquid, so that the power consumption of electrolysis is increased and the zinc ions are difficult to diffuse, thereby the yield of the electrolytic zinc sheet cannot reach a high level. In industrial production, common magnesium removal methods include a zinc concentrate pickling method, a new liquid deep cooling method, a neutralization zinc precipitation method, a zinc sulfate crystallization method and the like, and the methods generally have the problems of high cost, large environmental protection hidden danger of produced waste liquid and waste residue and the like, and are difficult to popularize generally.
The prior art generally adopts a method for removing magnesium ions in a zinc sulfate solution under pressure, the method is to heat the zinc sulfate solution under the condition of pressure to ensure that the temperature of the zinc sulfate solution is more than 150 ℃, because the solubility of zinc sulfate and magnesium sulfate is parabolic to the temperature, the vertex temperature is about 70 ℃, the zinc sulfate and the magnesium sulfate are saturated and crystallized and separated out when the temperature is more than 150 ℃, the method can improve the removal efficiency of the magnesium ions by 70 percent, and the produced zinc-magnesium slag is only equivalent to one third of the neutralization zinc-settling slag under the same magnesium discharge amount. But the problem of high energy consumption exists when the zinc sulfate solution is heated to more than 150 ℃, and the problem of serious scaling cleaning difficulty exists in the crystallization in the autoclave at the same time.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the defects of the prior art, the invention aims to provide a method and a device for treating a new wet-process zinc smelting liquid, and aims to solve the problem of high energy consumption in the prior art when magnesium ions in the new wet-process zinc smelting liquid are removed.
A method for treating a new zinc hydrometallurgy liquid comprises the following steps:
adjusting the concentration of zinc ions in the new liquid and adjusting the temperature of the new liquid;
standing the new liquid to perform micro-crystallization on the new liquid to obtain new liquid containing micro-crystals;
standing the new solution containing the micro-crystals to recrystallize the new solution to obtain a bottom flow and a supernatant;
and taking the supernatant and conveying the supernatant to zinc electrolysis.
The method for treating the new wet zinc smelting liquid comprises the step of treating the new wet zinc smelting liquid, wherein the concentration of zinc ions is 130-170 g/L.
The method for treating the new wet-process zinc smelting liquid is characterized in that the temperature of the new liquid is 25-35 ℃.
The method for treating the wet-process zinc smelting new liquid comprises the following specific steps of: and cooling the new liquid by a blast type air cooling tower.
The method for treating the new zinc hydrometallurgy liquid comprises the step of carrying out micro-crystallization for 3-5 hours.
The method for treating the new wet-process zinc smelting liquid is characterized in that the recrystallization time is 15-20 h.
The method for treating the new wet-process zinc smelting liquid further comprises the following steps:
taking the underflow for filtering;
and returning the filtrate obtained after filtration to recrystallization.
The method for treating the new wet-process zinc smelting liquid comprises the following steps of:
collecting the filtered filter residue;
and recovering magnesium from the filter residue.
An apparatus for treating a new zinc hydrometallurgy liquid, comprising: the system comprises a purified new liquid storage tank, an electrolytic new liquid storage tank connected with the purified new liquid storage tank through a new liquid conveying pipeline, a new liquid bottom flow pipeline connected with the bottom of the electrolytic new liquid storage tank, and a new liquid supernatant pipeline connected with the side face of the electrolytic new liquid storage tank;
and valves are arranged on the new liquid conveying pipeline, the new liquid underflow pipeline and the new liquid supernatant pipeline.
The device for treating the new zinc hydrometallurgy liquid comprises a storage tank for the new electrolytic liquid, wherein the storage tank comprises: the upper part of the new electrolytic solution storage tank and the bottom of the new electrolytic solution storage tank connected with the upper part of the new electrolytic solution storage tank are arranged on the lower part of the electrolytic tank; the novel electrolytic solution storage tank is characterized in that the upper part of the novel electrolytic solution storage tank is a cylinder, and the bottom of the novel electrolytic solution storage tank is a cone.
Has the advantages that: the method for treating the new liquid of the zinc hydrometallurgy of the invention carries out micro-crystallization and recrystallization on the new liquid by adjusting the concentration of zinc ions in the new liquid and adjusting the temperature of the new liquid, so that magnesium ions in the new liquid are crystallized to form zinc-magnesium slag which is enriched in the bottom flow of the new liquid, thereby reducing the content of magnesium ions in the supernatant of the new liquid. The invention can keep the balance of magnesium ions in the wet zinc smelting process, does not change the existing wet zinc smelting process, does not need to pressurize the new liquid, and effectively reduces the energy consumption required by treating the new wet zinc smelting liquid.
Drawings
FIG. 1 is a process flow diagram of the method for treating the novel hydrometallurgical zinc solution according to the present invention.
Fig. 2 is a schematic structural diagram of the device for treating the new liquid of the hydrometallurgy zinc in the invention.
Detailed Description
The invention provides a method and a device for treating a new zinc hydrometallurgy liquid, and the invention is further described in detail below in order to make the purpose, the technical scheme and the effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A method for treating a new zinc hydrometallurgy liquid comprises the following steps:
adjusting the concentration of zinc ions in the new liquid and adjusting the temperature of the new liquid;
standing the new liquid to perform micro-crystallization on the new liquid to obtain new liquid containing micro-crystals;
standing the new solution containing the micro-crystals to recrystallize the new solution to obtain a bottom flow and a supernatant;
and taking the supernatant and conveying the supernatant to zinc electrolysis.
The new liquid is the electrolyte for zinc electrolysis after being purified in the zinc hydrometallurgy. The new liquor is mainly zinc sulphate solution, but the new liquor produced as a result of the zinc roasted ore usually containing MgO will also contain a certain amount of magnesium ions. That is, the method for treating the wet-process zinc smelting new liquid is carried out on the basis of the purified new liquid.
The aim of the invention is to make the zinc sulfate and magnesium sulfate in the new solution more easily separated out through micro-crystallization and recrystallization by adjusting the concentration of zinc ions in the new solution and adjusting the temperature of the new solution.
The micro-crystallization is a process in which trace zinc sulfate crystals and magnesium sulfate crystals are generated in the new solution after the concentration of zinc ions in the new solution is adjusted and the temperature of the new solution is adjusted for a period of time, wherein the zinc sulfate crystals and the magnesium sulfate crystals are suspended in the new solution in very fine particles.
The recrystallization refers to a process that zinc sulfate and magnesium sulfate crystals generated in the micro-crystallization process continue to grow slowly and settle slowly under the action of gravity along with the growth of the crystals, wherein zinc sulfate in a new solution is more prone to remain in the solution, and magnesium sulfate is more prone to be crystallized and separated out.
The method for treating the new liquid of the zinc hydrometallurgy of the invention carries out micro-crystallization and recrystallization on the new liquid by adjusting the concentration of zinc ions in the new liquid and adjusting the temperature of the new liquid, so that magnesium ions in the new liquid are crystallized to form zinc-magnesium slag which is enriched in the bottom flow of the new liquid, thereby reducing the content of magnesium ions in the supernatant of the new liquid. The invention can keep the balance of magnesium ions in the zinc hydrometallurgy process by changing the new liquid cooling process, does not change the existing zinc hydrometallurgy flow, does not need to pressurize the new liquid, and effectively reduces the energy consumption required by treating the new liquid hydrometallurgy.
In one embodiment of the invention, the concentration of the zinc ions in the new liquid is adjusted to be 130-170 g/L, in particular, the concentration of the zinc ions in the new liquid can be increased by adding the zinc sulfate into the new liquid, and new impurities can not be introduced in the process to influence the product quality of the zinc hydrometallurgy.
In order to make the zinc sulfate and magnesium sulfate in the new liquor more easily form micro-crystals, the temperature of the new liquor needs to be reduced. In one embodiment of the invention, the temperature of the new conditioning liquid is specifically adjusted to be 25-35 ℃. The temperature of the new liquid set in the invention is very easy to reach, and a very complicated cooling method is not needed.
According to the invention, by the method of combining the adjustment of the concentration of zinc ions in the new liquid and the adjustment of the temperature of the new liquid, zinc sulfate and magnesium sulfate in the new liquid are more easily subjected to micro-crystallization, the micro-crystallization can be realized in a short time, and the process flow time is saved.
Generally, the temperature of the purified fresh liquid is relatively high, and the purified fresh liquid needs to be cooled. In an embodiment of the present invention, the adjusting the temperature of the fresh liquid specifically includes: and cooling the new liquid by a blast type air cooling tower. The new liquid is cooled by the blast air cooling tower, so that the new liquid can be rapidly cooled, and the cooling cost is low.
In one embodiment of the present invention, the micro-crystallizing and re-crystallizing the new liquid specifically includes:
standing the new liquid in a new liquid purifying storage tank, and carrying out micro-crystallization;
and transferring the new liquid subjected to the micro-crystallization to an electrolytic new liquid storage tank for standing and carrying out recrystallization.
Specifically, the new liquid in the new liquid purifying storage tank is not yet saturated for zinc sulfate or magnesium sulfate at the temperature of 25-35 ℃ and the zinc concentration of 130-170 g/L, but the sulfate radical concentration is already saturated by a saturation meter of the magnesium sulfate, so that trace zinc sulfate and magnesium sulfate are crystallized in the system and suspended in the new liquid in very fine particles to realize the micro-crystallization of the zinc sulfate and the magnesium sulfate.
The recrystallization process is carried out in an electrolytic fresh liquid storage tank. Specifically, in the new electrolytic solution storage tank, the zinc sulfate and magnesium sulfate crystals generated in the micro-crystallization process continue to grow slowly, and slowly settle under the action of gravity along with the growth of the crystals, and a reversible reaction exists in the process
In the system, the solubility of zinc sulfate is higher than that of magnesium sulfate (for example, at 30 ℃, the saturated solubility of zinc sulfate and magnesium sulfate respectively calculated by Zn and Mg is 247.48 g/L and 77.8 g/L, and Zn is 3.18 times of Mg), so that zinc sulfate is more prone to stay in the solution in the reversible reaction, magnesium sulfate is more prone to crystallization and precipitation, and recrystallization is realized.
Therefore, the micro-crystallization and the recrystallization are both realized by a standing mode, and the removal of magnesium ions in the new liquid can be realized without a large amount of energy consumption in the process. In addition, the invention respectively carries out the micro-crystallization and the recrystallization in the purified fresh liquid storage tank and the electrolytic fresh liquid storage tank, and can effectively control and maintain the micro-crystallization and the recrystallization in a later period.
In experiments, the result that the micro-crystallization effect is not ideal and the subsequent recrystallization is influenced if the micro-crystallization time is too short is found; and if the micro-crystallization time is too long, zinc sulfate and magnesium sulfate crystal particles are too large and settle in a new purifying liquid storage tank. In one embodiment of the present invention, the time for performing the micro-crystallization is 3 to 5 hours.
In one embodiment of the present invention, the recrystallization is carried out for 15 to 20 hours. The time for recrystallization is to fully perform the reversible reaction, so that the enrichment degree of magnesium in the obtained zinc-magnesium slag is higher.
In one embodiment of the present invention, the method for processing a new hydrometallurgical zinc solution further comprises:
filtering the bottom flow in the new liquid after recrystallization;
returning the filtered filtrate to the recrystallization.
The detection of the concentration of each ion in the filtered filtrate completely accords with the condition of adding the filtrate into the recrystallization process. Specifically, the filtered filtrate is returned to be mixed with the new solution after the micro-crystallization, and the recrystallization is performed in the electrolytic new solution storage tank. The invention returns the filtered filtrate to the recrystallization, thus realizing the reuse of the filtrate and reducing the waste of resources.
In an embodiment of the present invention, the method for treating a new hydrometallurgical zinc solution, further includes, after filtering an underflow in the new recrystallized solution:
collecting the filtered filter residue;
and performing a tempering method on the filter residue or recovering magnesium.
The filter residue is zinc-magnesium residue. The step of recycling magnesium from the filter residue by a tempering method can be specifically that the filter residue is added into a tempering method system; or heating the filter residue, and adding a certain amount of reducing agent to realize the recovery of the metal magnesium.
Specifically, referring to fig. 1, the method for processing the new liquid of hydrometallurgy zinc includes the steps:
providing a purified new liquid;
the zinc concentration of the purified new liquid is improved;
cooling the purified fresh liquid by a blast type air cooling tower;
the cooled new liquid enters a purified new liquid storage tank to be kept stand for micro crystallization;
transferring the new liquid after micro crystallization to an electrolytic new liquid storage tank, standing and recrystallizing;
sending the supernatant of the recrystallized new solution to zinc electrolysis; and returning the filtrate obtained after filtering the new liquid bottom flow to the new electrolytic liquid storage tank, wherein the filtered filter residue is zinc-magnesium residue, and the filter residue is used for returning to a fire method or recovering magnesium.
The method for treating the new zinc hydrometallurgy liquid is a method for removing magnesium ions in a zinc sulfate solution, does not change the existing zinc hydrometallurgy flow, realizes the balance of the magnesium ions in the zinc hydrometallurgy process by changing the new liquid cooling process, and avoids the problems of high energy consumption, large equipment investment, complex operation and the like of the method for removing the magnesium ions in the zinc sulfate solution by pressurization.
In the research process, the magnesium sulfate is also found to be crystallized and precipitated in the autoclave, so that the scale is easily formed in the autoclave, and the scale is formed by the crystallization generated in the autoclave during the operation process of the autoclave, so that the autoclave has to be stopped frequently to clean the scale, and the utilization rate of equipment is seriously influenced. Based on this, the invention provides a device for treating the new wet-process zinc smelting liquid.
Referring to fig. 2, an apparatus for processing a new liquid of zinc hydrometallurgy includes: a purified new liquid storage tank 1, an electrolytic new liquid storage tank 2 connected with the purified new liquid storage tank 1 through a new liquid conveying pipeline 5, a new liquid underflow pipeline 6 connected with the bottom of the electrolytic new liquid storage tank 2, and a new liquid supernatant pipeline 7 connected with the side surface of the electrolytic new liquid storage tank 2;
and valves 4 are arranged on the new liquid conveying pipeline 5, the new liquid underflow pipeline 6 and the new liquid supernatant pipeline 7.
Specifically, the device for treating the new wet-process zinc smelting liquid comprises: the system comprises a purified new liquid storage tank 1 and a cooled new liquid pipeline 3 connected with the top of the purified new liquid storage tank 1, wherein a valve 4 is arranged at the joint of the purified new liquid storage tank 1 and the cooled new liquid pipeline 3; a new liquid conveying pipeline 5 connected with the bottom of the purified new liquid storage tank 1, wherein a valve 4 is arranged at the joint of the purified new liquid storage tank 1 and the new liquid conveying pipeline 5; the top of the new electrolytic solution storage tank 2 is connected with the new solution conveying pipeline 5, and a valve 4 is arranged at the joint of the new electrolytic solution storage tank 2 and the new solution conveying pipeline 5; a new liquid underflow pipe 6 connected with the bottom of the new electrolytic liquid storage tank 2, wherein a valve 4 is arranged at the connection part of the new electrolytic liquid storage tank 2 and the new liquid underflow pipe 6; and a new liquid supernatant pipeline 7 connected with the side surface of the new electrolytic liquid storage tank 2, and a valve 4 is arranged at the joint of the new electrolytic liquid storage tank 2 and the new liquid supernatant pipeline 7.
In one implementation manner of the present invention, the upper portions of the fresh purifying liquid storage tank 1 and the fresh electrolyzing liquid storage tank 2 are both thin cylinders (i.e. the height of the thin cylinder is greater than the horizontal diameter of the thin cylinder), the bottoms of the fresh purifying liquid storage tank 1 and the fresh electrolyzing liquid storage tank 2 are both cones, and the liquid inlet manners of the fresh purifying liquid storage tank 1 and the fresh electrolyzing liquid storage tank 2 are both up-in and down-out. The thin cylinder at the upper part of the new electrolytic solution storage tank 2 is used for prolonging the sedimentation time of zinc sulfate and magnesium sulfate crystals and leading the reversible reaction to be more fully carried out, thereby obtaining higher enrichment degree of magnesium in zinc-magnesium slag. The bottom of the electrolytic fresh liquid storage tank 2 is designed into a cone so that the fresh liquid bottom flow can be discharged more easily.
Furthermore, the device for treating the new zinc hydrometallurgy liquid comprises a plurality of purified new liquid storage tanks 1 arranged in parallel and a plurality of electrolytic new liquid storage tanks 2 arranged in parallel, wherein the purified new liquid storage tanks 1 are connected in parallel through pipelines, and the electrolytic new liquid storage tanks 2 are connected in parallel through pipelines. The device for treating the wet-process zinc smelting new liquid can realize continuous treatment of the new liquid.
The flow of the new liquid in the device for treating the new liquid in the wet-process zinc smelting is as follows: the cooled new liquid enters a purified new liquid storage tank 1 through a cooled new liquid pipeline 3, micro-crystallization is completed through standing, a valve 4 arranged on a new liquid conveying pipeline 5 is opened, new liquid containing micro-crystallization is input into an electrolytic new liquid storage tank 2, recrystallization is completed through standing, a valve 4 arranged on a new liquid supernatant pipeline 7 is opened, the supernatant is conveyed to zinc electrolysis, a valve 4 arranged on a new liquid underflow pipeline 6 is opened, and the new liquid underflow is conveyed to a filtering device for filtering.
The technical solution of the present invention will be described below by way of specific examples.
Example 1
Zinc roasted ore (containing MgO with the mass percentage of 0.5%) is adopted for zinc hydrometallurgy, zinc sulfate is added into purified new liquid to control the zinc content of the purified new liquid to be 137 g/L, the cooled new liquid is cooled by a blast air cooling tower to control the temperature of the cooled new liquid to be 35 ℃, the cooled new liquid is input into a purified new liquid storage tank 1, the size of the purified new liquid storage tank 1 is phi 4000 × 8000mm, the micro-crystallization time is controlled for 4h, the new liquid after micro-crystallization is introduced into an electrolytic new liquid storage tank 2, the size of the electrolytic new liquid storage tank 2 is phi 9000 × 10000mm, the re-crystallization time is controlled for 15h, the new liquid is cleaned and is sent to zinc electrolysis, zinc-magnesium slag and magnesium produced after the new liquid bottom flow is filtered are respectively 20.85% and 11.09% (namely, the zinc-magnesium content is 1.88:1), and the new liquid contains magnesium 17 g/L when the system is balanced.
Example 2
Zinc roasted ore (containing MgO with the mass percentage of 0.5%) is adopted for zinc hydrometallurgy, zinc sulfate is added into purified new liquid to control the zinc content of the purified new liquid to be 142 g/L, the cooled new liquid is cooled by a blast air cooling tower to control the temperature of the cooled new liquid to be 30 ℃, the cooled new liquid is input into a purified new liquid storage tank 1, the size of the purified new liquid storage tank 1 is phi 4000 × 8000mm, the micro-crystallization time is controlled for 4h, the new liquid after micro-crystallization is introduced into an electrolytic new liquid storage tank 2, the size of the electrolytic new liquid storage tank 2 is phi 9000 × 10000mm, the re-crystallization time is controlled for 15h, the new liquid is cleaned and is sent to zinc electrolysis, zinc-magnesium slag and magnesium produced after the new liquid bottom flow is filtered are respectively 26.63% and 16.82% (namely Zn: Mg is 1.58:1), and the new liquid contains magnesium 16 g/L when the system is balanced.
Example 3
Zinc roasted ore (containing MgO with the mass percentage of 0.5%) is adopted for zinc hydrometallurgy, zinc sulfate is added into purified new liquid to control the zinc content of the purified new liquid to be 150 g/L, the cooled new liquid is cooled by a blast air cooling tower to control the temperature of the cooled new liquid to be 28 ℃, the cooled new liquid is input into a purified new liquid storage tank 1, the size of the purified new liquid storage tank 1 is phi 4000 × 8000mm, the micro-crystallization time is controlled for 4h, the new liquid after micro-crystallization is introduced into an electrolytic new liquid storage tank 2, the size of the electrolytic new liquid storage tank 2 is phi 9000 × 10000mm, the re-crystallization time is controlled for 15h, the new liquid is cleaned and is sent to zinc electrolysis, zinc-magnesium slag and magnesium produced after the new liquid bottom flow is filtered are respectively 25.20% and 26.80% (namely, the zinc-magnesium content is 0.94:1), and the new liquid contains magnesium 15 g/L when the system is balanced.
Therefore, the embodiment can effectively remove magnesium ions in the zinc sulfate electrolysis new solution, and can avoid the problems of high energy consumption, large equipment investment, complex operation and the like in the pressurization treatment of the electrolysis new solution.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A method for treating a new zinc hydrometallurgy liquid is characterized by comprising the following steps:
adjusting the concentration of zinc ions in the new liquid and adjusting the temperature of the new liquid;
standing the new liquid to perform micro-crystallization on the new liquid to obtain new liquid containing micro-crystals;
standing the new solution containing the micro-crystals to recrystallize the new solution to obtain a bottom flow and a supernatant;
and taking the supernatant and conveying the supernatant to zinc electrolysis.
2. The method as claimed in claim 1, wherein the concentration of zinc ions in the new solution is adjusted to 130-170 g/L.
3. A method of treating a green hydrometallurgical zinc solution according to claim 1, characterised in that the temperature of the green solution is adjusted to 25-35 ℃.
4. The method for treating a new zinc hydrometallurgy liquid according to claim 1, wherein the adjusting the temperature of the new liquid specifically comprises: and cooling the new liquid by a blast type air cooling tower.
5. The method for treating a new hydrometallurgical zinc solution according to claim 1, characterized in that the micro crystallization time is 3-5 h.
6. The method for treating a new hydrometallurgical zinc solution according to claim 1, characterized in that the recrystallization time is 15-20 h.
7. The method of claim 1, further comprising: taking the underflow for filtering;
and returning the filtrate obtained after filtration to recrystallization.
8. The method for treating new liquid zinc hydrometallurgy according to claim 7, wherein said underflow taking and filtering further comprises:
collecting the filtered filter residue;
and recovering magnesium from the filter residue.
9. A device for treating new liquid of zinc hydrometallurgy is characterized by comprising: the system comprises a purified new liquid storage tank, an electrolytic new liquid storage tank connected with the purified new liquid storage tank through a new liquid conveying pipeline, a new liquid bottom flow pipeline connected with the bottom of the electrolytic new liquid storage tank, and a new liquid supernatant pipeline connected with the side face of the electrolytic new liquid storage tank;
and valves are arranged on the new liquid conveying pipeline, the new liquid underflow pipeline and the new liquid supernatant pipeline.
10. The apparatus for processing a wet zinc metallurgy pregnant solution according to claim 9, wherein the electrolytic pregnant solution storage tank includes: the upper part of the new electrolytic solution storage tank and the bottom of the new electrolytic solution storage tank connected with the upper part of the new electrolytic solution storage tank are arranged on the lower part of the electrolytic tank; the novel electrolytic solution storage tank is characterized in that the upper part of the novel electrolytic solution storage tank is a cylinder, and the bottom of the novel electrolytic solution storage tank is a cone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191906.1A CN111485119A (en) | 2020-03-18 | 2020-03-18 | Method and device for treating new wet-process zinc smelting liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010191906.1A CN111485119A (en) | 2020-03-18 | 2020-03-18 | Method and device for treating new wet-process zinc smelting liquid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111485119A true CN111485119A (en) | 2020-08-04 |
Family
ID=71791587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010191906.1A Pending CN111485119A (en) | 2020-03-18 | 2020-03-18 | Method and device for treating new wet-process zinc smelting liquid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111485119A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122735A (en) * | 2021-04-02 | 2021-07-16 | 云南云铜锌业股份有限公司 | Alkali-process zinc powder combined smelting method |
| CN113215414A (en) * | 2021-05-17 | 2021-08-06 | 云南云铜锌业股份有限公司 | Method for removing magnesium in zinc hydrometallurgy process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001064736A (en) * | 1999-08-25 | 2001-03-13 | Nippon Mining & Metals Co Ltd | Recovery of zinc |
| WO2014047728A1 (en) * | 2012-09-26 | 2014-04-03 | Orbite Aluminae Inc. | Processes for preparing alumina and magnesium chloride by hc1 leaching of various materials |
| CN106435214A (en) * | 2016-11-14 | 2017-02-22 | 云南驰宏锌锗股份有限公司 | Method for removing magnesium in zinc smelting 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 |
| CN108893622A (en) * | 2018-07-16 | 2018-11-27 | 四环锌锗科技股份有限公司 | A kind of zinc liquid air blast cooling technique |
| CN209065978U (en) * | 2018-08-30 | 2019-07-05 | 西北矿冶研究院 | Device for removing calcium and magnesium ions in zinc hydrometallurgy process |
-
2020
- 2020-03-18 CN CN202010191906.1A patent/CN111485119A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001064736A (en) * | 1999-08-25 | 2001-03-13 | Nippon Mining & Metals Co Ltd | Recovery of zinc |
| WO2014047728A1 (en) * | 2012-09-26 | 2014-04-03 | Orbite Aluminae Inc. | Processes for preparing alumina and magnesium chloride by hc1 leaching of various materials |
| CN106435214A (en) * | 2016-11-14 | 2017-02-22 | 云南驰宏锌锗股份有限公司 | Method for removing magnesium in zinc smelting 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 |
| CN108893622A (en) * | 2018-07-16 | 2018-11-27 | 四环锌锗科技股份有限公司 | A kind of zinc liquid air blast cooling technique |
| CN209065978U (en) * | 2018-08-30 | 2019-07-05 | 西北矿冶研究院 | Device for removing calcium and magnesium ions in zinc hydrometallurgy process |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113122735A (en) * | 2021-04-02 | 2021-07-16 | 云南云铜锌业股份有限公司 | Alkali-process zinc powder combined smelting method |
| CN113122735B (en) * | 2021-04-02 | 2022-11-15 | 云南云铜锌业股份有限公司 | Alkali-process zinc powder combined smelting method |
| CN113215414A (en) * | 2021-05-17 | 2021-08-06 | 云南云铜锌业股份有限公司 | Method for removing magnesium in zinc hydrometallurgy process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2741429C1 (en) | Method and system for complete reprocessing of copper-nickel sulphide ore | |
| CN102191384B (en) | Method for extracting gallium from fly ash | |
| CN108624759B (en) | Method for comprehensively recovering valuable metals from white smoke | |
| CN104925986B (en) | Steel industry pickle liquor and flushing waste water near-zero release processing system and technique thereof | |
| CN102453931A (en) | Technology for treating and purifying copper electrolyte by vortex electrolysis | |
| CN102260795A (en) | Method for directly producing electrolytic nickel by using copper nickel renewable resources | |
| CN111485119A (en) | Method and device for treating new wet-process zinc smelting liquid | |
| CN108456787A (en) | A kind of method that crude nickle sulphate refines valuable element synthetical recovery | |
| CN106757179A (en) | A kind of cupric electrolysis tail washings purifies the process of decopper(ing) removal of impurities | |
| CN103451673B (en) | The production method of electrolytic metal Mn | |
| CN105755296A (en) | Method for removing calcium from zinc sulfate solution of zinc hydrometallurgy production | |
| CN105838879A (en) | Method and apparatus for removing calcium and magnesium from solution after indium precipitation in zinc smelting | |
| CN202519343U (en) | System for recovering copper from waste circuit board | |
| CN106282587A (en) | A kind of recovery copper and method of cadmium from copper-cadmium slag | |
| CN112301381B (en) | Method for removing magnesium ions from zinc electrolyte | |
| CN110964914B (en) | Method for removing calcium and magnesium in zinc hydrometallurgy process | |
| CN102206749A (en) | Normal-pressure leaching method for simultaneously processing laterites with high iron content and high magnesium content | |
| CN107904407A (en) | One kind bismuth technique | |
| CN105385853B (en) | A kind of cupric gives up the processing method of magnesia brick | |
| JP5320861B2 (en) | Operation method of wastewater treatment process of zinc and lead smelting method | |
| CN102888624A (en) | Method for producing superfine zinc powder by performing cyclone electrolyzing on zinc-containing alkali liquor | |
| CN1034958C (en) | One-step Zn smelting technique by suspension electrolysis of ZnS | |
| CN110578052A (en) | Method for reducing calcium content in feed liquid with high calcium sulfate content | |
| CN104630471A (en) | Method and device for removing magnesium ions in zinc sulfate solution by virtue of pressure | |
| CN111286609A (en) | Method for separating and purifying lead, zinc, cadmium and copper based on ammonium complex system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200804 |