CN115110123B - Method for defluorinating and chlorinating waste electrolyte of zinc hydrometallurgy - Google Patents
Method for defluorinating and chlorinating waste electrolyte of zinc hydrometallurgy Download PDFInfo
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- CN115110123B CN115110123B CN202210787110.1A CN202210787110A CN115110123B CN 115110123 B CN115110123 B CN 115110123B CN 202210787110 A CN202210787110 A CN 202210787110A CN 115110123 B CN115110123 B CN 115110123B
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- aluminum
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- dechlorination
- copper slag
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- 239000002699 waste material Substances 0.000 title claims abstract description 39
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 36
- 239000011701 zinc Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 35
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 239000003792 electrolyte Substances 0.000 title claims abstract description 31
- 238000009854 hydrometallurgy Methods 0.000 title claims abstract description 17
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 54
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000006115 defluorination reaction Methods 0.000 claims abstract description 38
- 239000002893 slag Substances 0.000 claims abstract description 38
- 239000010949 copper Substances 0.000 claims abstract description 35
- 229910052802 copper Inorganic materials 0.000 claims abstract description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 30
- 150000003839 salts Chemical class 0.000 claims abstract description 30
- 239000000460 chlorine Substances 0.000 claims abstract description 26
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 22
- 150000001875 compounds Chemical class 0.000 claims abstract description 21
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000006298 dechlorination reaction Methods 0.000 claims abstract description 19
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 14
- 239000011737 fluorine Substances 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000012535 impurity Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 150000001879 copper Chemical class 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical group [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 2
- 150000001804 chlorine Chemical class 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 238000001914 filtration Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 13
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 11
- 238000004537 pulping Methods 0.000 abstract description 7
- 238000004062 sedimentation Methods 0.000 abstract description 5
- 239000000654 additive Substances 0.000 abstract description 2
- 230000000996 additive effect Effects 0.000 abstract description 2
- 239000003463 adsorbent Substances 0.000 abstract description 2
- 239000000701 coagulant Substances 0.000 abstract description 2
- 238000002386 leaching Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 6
- 238000004070 electrodeposition Methods 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- -1 fluoride ions Chemical class 0.000 description 3
- 238000011085 pressure filtration Methods 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009858 zinc metallurgy Methods 0.000 description 2
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- 229910016569 AlF 3 Inorganic materials 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 229910021591 Copper(I) chloride Inorganic materials 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- LWUVWAREOOAHDW-UHFFFAOYSA-N lead silver Chemical compound [Ag].[Pb] LWUVWAREOOAHDW-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
-
- 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
Abstract
The invention discloses a method for defluorinating and chlorinating waste electrolyte of zinc hydrometallurgy, which comprises the following steps: (1) Mixing copper slag, aluminum-based salt and aluminum-based compound, and pulping to obtain slurry for later use; (2) Mixing the slurry with waste electrolyte, and carrying out defluorination and dechlorination at normal temperature; (3) And (3) carrying out filter pressing on the waste electrolyte after defluorination and dechlorination, and separating to obtain defluorination and chlorine removal waste liquid and dechlorination copper slag. The invention simultaneously develops defluorination and chlorine, the main additive in the process of defluorination is copper slag, aluminum-based salt is used as a coagulant, aluminum-based compound is used as an adsorbent, copper slag is used as a sedimentation carrier to accelerate a sedimentation mixing system, and the defluorination efficiency and the dechlorination efficiency are improved at the same time, so that the problems of overhigh fluorine content and chlorine content in the current zinc system are solved.
Description
Technical Field
The invention relates to the technical field of heavy metal smelting wastewater treatment, in particular to a method for defluorinating waste electrolyte of zinc hydrometallurgy.
Background
The wet zinc metallurgy consists of four working procedures of normal-pressure zinc metallurgy-roasting, leaching, liquid purification and electro-deposition or four working procedures of full-wet zinc metallurgy-oxygen pressure leaching, neutralization iron removal, liquid purification and electro-deposition. The roasting process of normal-pressure zinc hydrometallurgy can separate harmful ions such as fluorine, chlorine and the like into flue gas, and the flue gas is opened to go out of a wet system, while the roasting process is not adopted in the whole wet leaching process, and oxygen pressure acid leaching is adopted to directly carry out strong metallurgical leaching, so that impurities such as fluorine, chlorine and the like cannot enter a solution directly in an opened way, and the mechanized zinc stripping is finally realized for more than 36 hours in the cathode electrodeposition period of zinc electrodeposition, so that the impurities in the zinc leaching process are introduced into slag as far as possible, and the impurities are deeply removed (the impurity content is one order of magnitude lower than that in the traditional process) in the purifying process, so that the technology becomes a key technology of the whole wet zinc hydrometallurgy.
In the zinc hydrometallurgy process, the solution before electrodeposition is required to have fluorine less than 80mg/L and chlorine less than 420mg/L, for example, fluorine and chlorine are higher than the control standard requirement, and in the zinc hydrometallurgy process, the cathode aluminum plate and the anode lead silver alloy plate are severely corroded, so that the quality of zinc ingots is influenced by high lead content of precipitated zinc, the yield is influenced by difficult stripping of zinc sheets, the consumption of the cathode aluminum plate greatly increases the production cost, and the system chloride ions corrode pipelines and equipment and the like.
Therefore, a method for simultaneously removing fluorine and chlorine in zinc hydrometallurgy is provided, and a technical problem to be solved is needed to be solved by a person skilled in the art.
Disclosure of Invention
In view of the above, the invention combines the defluorination advantages of the coagulating sedimentation method and the adsorption method, avoids the defects of the respective methods, and provides a defluorination chlorine method for waste electrolyte of zinc hydrometallurgy.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a method for defluorinating and chlorinating waste electrolyte of zinc hydrometallurgy comprises the following steps:
(1) Mixing copper slag, aluminum-based salt and aluminum-based compound, and pulping to obtain slurry for later use;
(2) Mixing the slurry with waste electrolyte, and carrying out defluorination and dechlorination at normal temperature;
(3) The waste electrolyte after defluorination and dechlorination is filtered by 1 filter area of 150m 3 The pressure filter is used for pressure filtration, the pressure filtration pressure is controlled at 18MPa, and the pressure filtration time is about 60min, so that the defluorinated chlorine waste liquid and the dechlorinated copper slag are obtained through separation.
Further, in the step (1), the mass ratio of the copper slag, the aluminum-based salt and the aluminum-based compound is 1-5:1.
Further, the copper slag consists of the following raw materials in percentage by mass: 47-59% of copper, 0.01-0.14% of Cl, 30-40% of water and the balance of zinc;
the aluminum-based salt is aluminum sulfate and industrial boiler ash (the main components are calcium oxide and aluminum oxide)
The aluminum-based compound comprises the following raw materials in percentage by mass: al (Al) 2 O 3 25.84％，Al4.39％，CaO26.51％，SiO 2 39.54%, the other 3.72%;
the granularity of the aluminum-based compound is 320 meshes.
The beneficial effect of adopting above-mentioned further scheme lies in: 1. meets the requirements of copper slag dechlorination reaction mechanism (acid condition and low temperature) and can effectively remove chlorine in the fluorine solution.
2. The zinc concentration of the waste liquid is low (about 50 g/L), and the produced dechlorinated copper slag takes away less zinc (about 2 percent), so that the metal loss is reduced.
3. And leaching zinc (about 9 percent) in the copper slag (about 2 percent of zinc in the slag) and recycling by utilizing the characteristic of high acidity of the waste liquid.
Further, the pulping temperature of the pulping treatment operation is 30-40 ℃, the liquid-solid ratio is 3:1, and the pulping time is more than 20 min.
The beneficial effect of adopting above-mentioned further scheme lies in: 1. the slurry is beneficial to continuous stabilization during the addition process.
2. The pulping process can fully and uniformly mix the aluminum-based salt and the aluminum-based compound, so that the reaction is quicker and more stable.
Further, the amount of the spent electrolyte in the step (2) is 50m 3 。
Furthermore, the defluorination and dechlorination method in the step (2) is a discontinuous operation or a continuous operation, and the defluorination and dechlorination treatment time is 1-1.5h.
The beneficial effect of adopting above-mentioned further scheme lies in: 1. the continuous operation can increase the treatment capacity, so that the fluorine and chlorine content of the system is rapidly reduced, the passive production situation is twisted, but the fluctuation of the components of the treated liquid is large and unstable.
2. The intermittent operation can ensure that the index of the treated liquid is stable, but the treatment capacity is limited.
Further, the pressure of the filter pressing in the step (3) is 18MPa, and the filter pressing time is 60min.
The beneficial effect of adopting above-mentioned further scheme lies in: the pressure maintaining pressure of the filter press is 18MPa, and the pressure is 1.2MPa. The pressure of the filter pressing is increased to help control the water content of the slag, so that the water content of the slag is ensured to be reduced.
The invention has the beneficial effects that: the invention produces AlF by using aluminum-based salt as coagulation and reacting with fluoride ions in solution 3 AL-F complex, alF 3 The fluorine ion removing agent is slightly soluble in cold water, soluble in hot water and insoluble in acid and alkali solutions, so that fluoride ions in the solution are removed from the waste liquid.
Copper slag produced by wet zinc metallurgy is used as chlorine removing agent, copper oxide in the copper slag is leached by moderate high-acid to manufacture part of Cu 2+ React with Cu in copper slag to generate Cu + The copper slag dechlorination method is to utilize the reaction of cuprous ions and chloride ions to generate CuCl precipitate which is difficult to dissolve in water, and remove the chloride ions from the solution.
In the method, defluorination and chlorine are carried out simultaneously, the main additive in the dechlorination process is copper slag, aluminum-based salt is used as a coagulant, aluminum-based compound is used as an adsorbent, copper slag is used as a sedimentation carrier to accelerate a sedimentation mixing system, defluorination efficiency and dechlorination efficiency are improved, and the problems of excessive fluorine and chlorine in the current zinc system are solved.
Drawings
FIG. 1 is a process flow diagram of the method for defluorinating and chlorinating a zinc hydrometallurgy waste electrolyte of the invention;
FIG. 2 is a graph showing the variation of defluorination rate of aluminum-based salts according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples
A method for defluorinating and chlorinating waste electrolyte of zinc hydrometallurgy comprises the following steps:
(1) Copper slag, aluminum-based salt and aluminum-based compound according to 5:2:3, carrying out mixed pulping treatment according to the proportion to obtain slurry for standby;
copper slag analysis data: h 2 O：30.88％，Zn：5.81％，Cu：39.86％，Cl：0.0125％；
Aluminum-based compound analysis data: al (Al) 2 O 3 25.84％，Al4.39％，CaO26.51％，SiO 2 39.54%, the other 3.72%;
(2) The slurry was separated from the waste electrolyte (50 m 3 ) Mixing, and performing defluorination and dechlorination at normal temperature; waste liquid data (precursor liquid): f (F) - ：176.55mg/L、Cl - ：1099.66mg/L；
(3) And (3) carrying out filter pressing on the waste electrolyte after defluorination and dechlorination, and separating to obtain defluorination and chlorine removal waste liquid and dechlorination copper slag. Waste liquid data after defluorination, chlorine: f:94.96mg/L, cl:146mg/L, wherein the F removal rate is 46.21%, and the Cl removal rate is 86.72% to achieve a more ideal effect; copper slag analysis data produced after the operation is completed: h 2 O：32.47％，Zn：2.67％，Cu：24.34％，Cl：0.157％，F：0.0508％，Al：1.16％。
The slag rate is 134.15% by comparing the front and rear slag amounts, the produced slag amount is larger than the addition amount of the copper slag and aluminum-based compound, and meanwhile, the grade of the copper slag is reduced by 3.73% and part of copper metal enters the solution, so that the grade of the copper slag is reduced due to the increase of the slag amount.
By combining the analysis results, the invention has proved that the addition of copper slag, aluminum-based salt and aluminum-based compound into the waste electrolyte can remove fluorine and chlorine in the solution to a lower range, thereby solving the problems of excessive fluorine and chlorine in a zinc system.
Test examples
The defluorination rate change curve of the aluminum-based salt with different addition amounts is shown in fig. 2 (wherein the x-axis is the addition amount of the aluminum-based salt, and the y-axis is the defluorination rate):
1. the defluorination rate in the waste electrolyte rises along with the rising of the adding amount of the aluminum-based salt, the defluorination rate and the aluminum-based salt are in a direct proportion, and the defluorination rate can reach 81.47% when the adding amount of the aluminum-based salt is 20 g/L; compared with 12g/L, the defluorination rate curve fluctuation of the 5g/L aluminum-based salt added amount is relatively gentle, and the optimal added amount is selected when the 5g/L aluminum-based salt added amount is considered in combination with the production cost.
2. And according to the comparison of the defluorination rates of the aluminum-based salts in the waste electrolyte, the defluorination reaction time of the aluminum-based salts in the waste electrolyte is prolonged, and the defluorination rate is slightly reduced, so that the reaction time is controlled to be 1.5h.
3. The defluorination rate of the aluminum-based salt in the waste electrolyte is compared at different temperatures, under the condition that the adding amount of the aluminum-based salt is constant, the defluorination rate is not obviously influenced by improving the reaction temperature and prolonging the reaction time in the waste electrolyte, and the aluminum-based salt accords with AlF 3 The chemical properties of being slightly soluble in cold water and in hot water are chosen to be at room temperature.
4. The aluminum-based compound is added into the waste electrolyte to adsorb and remove fluorine ions in the solution, but under the condition that the adding amount of the aluminum-based compound is 10g/L, the defluorination rate is still less than 40%, and is limited by the actual situation on site, so that the grade of copper slag is not affected, and the adding amount of the aluminum-based compound cannot be continuously improved.
5. The aluminum-based salt and the aluminum-based compound are added into the waste electrolyte, so that the final defluorination rate can be improved, and in the proportion of the aluminum-based salt to the aluminum-based compound, the higher the aluminum-based salt content is, the higher the defluorination rate is in the waste electrolyte, and when the addition amount of the aluminum-based salt is fixed, the higher the defluorination rate is, and the two are in direct proportion.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (4)
1. The method for defluorinating and chlorinating the zinc hydrometallurgy waste electrolyte is characterized by comprising the following steps of:
(1) Mixing copper slag, aluminum base salt and aluminum base compound, and carrying out slurrying treatment, wherein the slurrying temperature is 30-40 ℃, the liquid-solid ratio is 3:1, the slurrying time is more than 20 minutes, and the obtained slurry is for standby, wherein the mass ratio of the copper slag, the aluminum base salt and the aluminum base compound is 5:2:3, a step of;
the copper slag consists of the following raw materials in percentage by mass: 47-59% of copper, 0.01-0.14% of Cl, 30-40% of water and the balance of zinc;
the aluminum-based salt is aluminum sulfate and industrial boiler ash;
the aluminum-based compound comprises the following raw materials in percentage by mass: al (Al) 2 O 3 25.84％，Al4.39％，CaO26.51％，SiO 2 39.54% and 3.72% of impurities; the granularity of the aluminum-based compound is 320 meshes;
(2) Mixing the slurry with waste electrolyte, and carrying out defluorination and dechlorination at normal temperature;
(3) Filtering the waste electrolyte after defluorination and dechlorination for 150m 3 And (3) carrying out filter pressing on the filter press to obtain defluorinated chlorine waste liquid and dechlorinated copper slag through separation.
2. The method for defluorinating and chlorinating waste electrolyte in zinc hydrometallurgy according to claim 1, wherein the waste electrolyte in the step (2) is used in an amount of 50m 3 。
3. The method for removing fluorine and chlorine from zinc hydrometallurgy waste electrolyte according to claim 2, wherein the defluorination and dechlorination method in the step (2) is a discontinuous operation or a continuous operation, and the defluorination and dechlorination treatment time is 1-1.5h.
4. The method for defluorinating and chlorine removing of zinc hydrometallurgy waste electrolyte according to claim 1, wherein the pressure of the filter pressing in the step (3) is 18MPa, and the filter pressing time is 60min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210787110.1A CN115110123B (en) | 2022-07-04 | 2022-07-04 | Method for defluorinating and chlorinating waste electrolyte of zinc hydrometallurgy |
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| CN202210787110.1A CN115110123B (en) | 2022-07-04 | 2022-07-04 | Method for defluorinating and chlorinating waste electrolyte of zinc hydrometallurgy |
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| CN115110123B true CN115110123B (en) | 2024-03-19 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012201901A (en) * | 2011-03-23 | 2012-10-22 | Sumitomo Metal Mining Co Ltd | Method for manufacturing zinc oxide sintered ore |
| CN104630831A (en) * | 2015-02-12 | 2015-05-20 | 桂林理工大学 | Method for removing fluorine-chlorine from zinc hydrometallurgy waste electrolyte circulation liquid |
| CN109055748A (en) * | 2018-08-30 | 2018-12-21 | 西北矿冶研究院 | Defluorination chlorine agent and preparation method thereof and method for defluorination chlorine using same |
| CN109487082A (en) * | 2018-12-24 | 2019-03-19 | 有研工程技术研究院有限公司 | A method of taking off fluorine and chlorine removal from zinc electrolyte |
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- 2022-07-04 CN CN202210787110.1A patent/CN115110123B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012201901A (en) * | 2011-03-23 | 2012-10-22 | Sumitomo Metal Mining Co Ltd | Method for manufacturing zinc oxide sintered ore |
| CN104630831A (en) * | 2015-02-12 | 2015-05-20 | 桂林理工大学 | Method for removing fluorine-chlorine from zinc hydrometallurgy waste electrolyte circulation liquid |
| CN109055748A (en) * | 2018-08-30 | 2018-12-21 | 西北矿冶研究院 | Defluorination chlorine agent and preparation method thereof and method for defluorination chlorine using same |
| CN109487082A (en) * | 2018-12-24 | 2019-03-19 | 有研工程技术研究院有限公司 | A method of taking off fluorine and chlorine removal from zinc electrolyte |
Non-Patent Citations (1)
| Title |
|---|
| 全湿法炼锌系统中氟氯的影响及脱除方法;刘玉池;有色金属设计;第47卷(第4期);65-67 * |
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