CN114058871A - Method for removing F in zinc hydrometallurgy system by using spray iron deposition process-、Al3+Method (2) - Google Patents
Method for removing F in zinc hydrometallurgy system by using spray iron deposition process-、Al3+Method (2) Download PDFInfo
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- 239000011701 zinc Substances 0.000 title claims abstract description 56
- 229910052725 zinc Inorganic materials 0.000 title claims abstract description 56
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 44
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000009854 hydrometallurgy Methods 0.000 title claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 15
- 230000008021 deposition Effects 0.000 title claims abstract description 10
- 239000007921 spray Substances 0.000 title claims description 9
- 238000002386 leaching Methods 0.000 claims abstract description 55
- 238000005507 spraying Methods 0.000 claims abstract description 37
- 239000006228 supernatant Substances 0.000 claims abstract description 28
- 229940037003 alum Drugs 0.000 claims abstract description 24
- 230000007935 neutral effect Effects 0.000 claims abstract description 24
- 238000001556 precipitation Methods 0.000 claims abstract description 23
- 239000002253 acid Substances 0.000 claims abstract description 17
- 238000006386 neutralization reaction Methods 0.000 claims abstract description 17
- 238000000151 deposition Methods 0.000 claims abstract description 16
- 239000003792 electrolyte Substances 0.000 claims abstract description 13
- 239000002699 waste material Substances 0.000 claims abstract description 11
- 238000000746 purification Methods 0.000 claims abstract description 3
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 claims description 10
- 229910001447 ferric ion Inorganic materials 0.000 claims description 10
- 230000002378 acidificating effect Effects 0.000 claims description 5
- 238000005363 electrowinning Methods 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 abstract description 10
- 238000009825 accumulation Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 abstract description 3
- 229960001763 zinc sulfate Drugs 0.000 abstract description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 abstract description 3
- 230000003472 neutralizing effect Effects 0.000 abstract 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 24
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 20
- 229910052731 fluorine Inorganic materials 0.000 description 20
- 239000011737 fluorine Substances 0.000 description 20
- 239000011787 zinc oxide Substances 0.000 description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 239000000460 chlorine Substances 0.000 description 8
- 239000003513 alkali Substances 0.000 description 5
- 238000006115 defluorination reaction Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004070 electrodeposition Methods 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000005660 chlorination reaction Methods 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000010828 elution Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- LWUVWAREOOAHDW-UHFFFAOYSA-N lead silver Chemical compound [Ag].[Pb] LWUVWAREOOAHDW-UHFFFAOYSA-N 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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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
-
- 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
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention belongs to the technical field of zinc sulfate solution purification production in zinc hydrometallurgy, and particularly relates to a method for removing F in a zinc hydrometallurgy system by using a spraying iron deposition process‑、Al3+The method solves the problem of F in a zinc hydrometallurgy system in the prior art‑、Al3+Failure to remove normally, resulting in F‑、Al3+The accumulation is in a high-order balance state, so as to generate negative influence on the control condition of the wet zinc smelting process, and the F in the wet zinc smelting system is removed by utilizing the spraying iron-depositing process‑、Al3+The method comprises the following steps: performing neutral leaching treatment on the zinc calcine and the waste electrolyte together to obtain a supernatantAnd a medium underflow stream; pre-neutralizing the intermediate bottom flow to obtain a pre-supernatant and a pre-bottom flow; feeding the pre-bottom flow to carry out high-temperature high-acid leaching to obtain high supernatant which is used for a pre-neutralization control unit; and (3) carrying out alum precipitation treatment on the pre-supernatant, and assisting in matching with intermittent spraying for removing iron in the alum precipitation treatment process. The invention can effectively convert F in the system‑、Al3+And (5) removing.
Description
Technical Field
The invention relates to the technical field of zinc sulfate solution purification production in zinc hydrometallurgy, in particular to a method for removing F in a zinc hydrometallurgy system by using a spraying iron deposition process-、Al3+The method of (1).
Background
The copper crown nonferrous metal (Pozhou) finite responsibility company has the production capacity of 12 ten thousand tons/year of electrolytic zinc capacity and 10 ten thousand tons/year of electrolytic lead capacity, a zinc smelting system adopts a high-temperature high-acid-low-pollution alum precipitation process, and a lead smelting system adopts a bottom blowing, side blowing and fuming triple furnace process; the lead-silver slag produced by the zinc system is dried and then enters a bottom blowing furnace in a matched mode to recover valuable metal resources, meanwhile, the zinc smelting slag is subjected to harmless treatment, and the secondary zinc oxide produced by the lead system enters the zinc system through alkali washing, defluorination and chlorination, so that a process mode of linkage and complementation of lead and zinc is formed.
The fluorine content in the zinc concentrate is generally low, the content is 0.01-0.03%, and the fluorine removal rate of the zinc concentrate in the boiling roasting process is about 30-50%; the fluorine source in the system mainly comprises various smelting smoke dust with higher fluorine content, the fluorine content of the zinc hypoxide smoke dust of the lead smelting system is generally 0.1-0.2%, and the common defluorination and chlorine removal process mainly comprises defluorination and chlorine removal of a multi-hearth furnace and fluorine and chlorine elution of alkali. The defluorination and chlorination by adopting a multi-hearth furnace has better effect, but has larger investment in the early stage and higher energy consumption, and the removal treatment of the high fluorine and chlorine dust collection dust needs an independent system; the investment of alkali elution of fluorine and chlorine is less, the energy consumption is low, the fluorine removal effect is relatively lower than that of a multi-hearth furnace, the reaction time of alkali washing fluorine removal is a key factor influencing the fluorine removal effect, when the equipment capacity is relatively small, the reaction time is short, the fluorine removal efficiency cannot reach the expected effect, the fluorine content in the zinc oxide leachate is relatively high, and accumulation is formed in the system.
At present, F in a zinc hydrometallurgy system-、Al3+The reasons for the accumulation are: the secondary zinc oxide produced by a lead system enters a zinc system after being subjected to an alkali washing fluorine and chlorine removal process, the fluorine removal rate is 70%, the chlorine removal rate is 80%, the secondary zinc oxide leaching solution contains 200mg/L fluorine and 600mg/L chlorine, and the primary medium-high clear fluorine is easy to fluctuate and the cathode zinc stripping rate fluctuates greatly due to the fact that secondary zinc oxide leaching ore pulp is directly merged into a wet main system. In order to stably control the fluorine content in the middle-upper clear liquid and improve the cathode zinc stripping rate, Al is added into a leaching system3+Ensuring the fluorine content of the middle and upper clean liquid to reach the standard stably, and controlling Al in the electrolyte by an electrolysis system3+The concentration can temporarily improve the stripping rate of cathode zinc. It can be seen that a portion F of the system-By the entry of zinc oxide leachate, Al3+The aluminum salt is added into the system mainly through leaching and electrolysis. Because the zinc system adopts a high-temperature high-acid leaching process, F in the system-、Al3+Failure to remove normally, ultimately resulting in F-、Al3+Is in a high-order balance state. Higher Al in solution3+The process control conditions of the process such as the stability of the neutral leaching sedimentation, the pre-neutralization acidity and the like are negatively influenced. Therefore, F in the system must be considered-、Al3+Removal is performed. Based on the statement, the invention provides a method for removing F in a zinc hydrometallurgy system by using a spraying iron-depositing process-、Al3+The method of (1).
Disclosure of Invention
The invention aims to solve the problem of F in a zinc hydrometallurgy system in the prior art-、Al3+Failure to remove normally, resulting in F-、Al3+The accumulation is in a high-order balance state, thereby generating negative influence on the control condition of the wet zinc smelting process, and the provided method for removing F in the wet zinc smelting system by using the spray iron-depositing process-、Al3+The method of (1).
Wet zinc smelting system removing by spraying iron-depositing technologyMiddle F-、Al3+The zinc hydrometallurgy system comprises a leaching system, wherein the leaching system comprises four control units of neutral leaching, preneutralization, high-temperature high-acid leaching and low-pollution alum precipitation; the method specifically comprises the following steps:
s1, adding the zinc calcine and the waste electrolyte into a neutral leaching control unit together, and performing neutral leaching treatment to obtain a middle supernatant and a middle underflow;
s2, feeding the middle bottom flow obtained in the step S1 into a pre-neutralization control unit, and carrying out pre-neutralization treatment to obtain a pre-supernatant and a pre-bottom flow;
s3, sending the pre-bottom flow obtained in the step S2 to a high-temperature high-acid leaching control unit, and performing high-temperature high-acid leaching to obtain high supernatant to be used in the pre-neutralization control unit;
and S4, sending the pre-supernatant obtained in the step S2 to a low-pollution alum precipitation control unit for alum precipitation treatment, and separately and discontinuously spraying and removing iron in the alum precipitation treatment process.
Preferably, during the neutral leaching process in the step S1, the control F-With Al3+The mass ratio of the components reaches 8:1, and the pH value of neutral leaching is 4.8-5.2.
Preferably, after the supernatant is purified in step S1, electrowinning is performed to obtain electrozinc and waste electrolyte.
Preferably, the step S4 of intermittently spraying to remove iron specifically includes: spraying weakly acidic leachate containing a large amount of ferric ions into a spraying groove with a fixed volume in a spraying mode, and controlling the solution in the spraying groove to contain Fe3+The concentration is less than 1g/L, and the pH value is 3.0-4.0.
The invention provides a system for removing F in a zinc hydrometallurgy system by using a spraying iron-depositing process-、Al3+The method has the following beneficial effects:
the invention adds Al in the zinc hydrometallurgy system3+Control F-With Al3+The mass ratio of (3) can stabilize the fluorine-containing electrolyte and improve the cathode zinc stripping rate; in the low-pollution alum deposition control unit of the zinc hydrometallurgy system, independent and discontinuous spraying deironing auxiliary treatment is adopted, and F in the system is treated while deironing-、Al3+Remove, avoid F-、Al3+The high level of balance of impurities in the system has a negative impact on production.
Drawings
FIG. 1 shows that the present invention provides a system for removing F in a zinc hydrometallurgy system by using a spray iron deposition process-、Al3+A process flow diagram of the method of (1).
Detailed Description
The present invention will be further illustrated with reference to the following specific examples.
Example one
The invention provides a system for removing F in a zinc hydrometallurgy system by using a spraying iron-depositing process-、Al3+The zinc hydrometallurgy system comprises a leaching system, wherein the leaching system comprises four control units of neutral leaching, preneutralization, high-temperature high-acid leaching and low-pollution alum precipitation; the method specifically comprises the following steps:
s1, adding the zinc calcine and the waste electrolyte into a neutral leaching control unit together, performing neutral leaching treatment, and controlling F-With Al3+The mass ratio of the zinc oxide to the zinc oxide reaches 8:1, the pH value of neutral leaching is 4.8, and a middle supernatant and a middle underflow are obtained, and after the middle supernatant is purified, electro-deposition is carried out to obtain electro-zinc and waste electrolyte;
s2, feeding the middle bottom flow obtained in the step S1 into a pre-neutralization control unit, and carrying out pre-neutralization treatment to obtain a pre-supernatant and a pre-bottom flow;
s3, sending the pre-bottom flow obtained in the step S2 to a high-temperature high-acid leaching control unit, and performing high-temperature high-acid leaching to obtain high supernatant to be used in the pre-neutralization control unit;
s4, conveying the pre-supernatant obtained in the step S2 to a low-pollution alum precipitation control unit for alum precipitation treatment, and assisting in matching with intermittent spraying for deironing in the alum precipitation treatment process, specifically, spraying a weakly acidic leachate containing a large amount of ferric ions into a spraying groove with a fixed volume in a spraying mode, and controlling the solution in the spraying groove to contain Fe3+The concentration was 0.8g/L and the pH was 3.0.
Example two
The invention provides a spray iron sinking toolF in zinc hydrometallurgy system is got rid of to art-、Al3+The zinc hydrometallurgy system comprises a leaching system, wherein the leaching system comprises four control units of neutral leaching, preneutralization, high-temperature high-acid leaching and low-pollution alum precipitation; the method specifically comprises the following steps:
s1, adding the zinc calcine and the waste electrolyte into a neutral leaching control unit together, performing neutral leaching treatment, and controlling F-With Al3+The mass ratio of the zinc oxide to the zinc oxide reaches 8:1, the pH value of neutral leaching is 5.0, and a middle supernatant and a middle underflow are obtained, and after the middle supernatant is purified, electro-deposition is carried out to obtain electro-zinc and waste electrolyte;
s2, feeding the middle bottom flow obtained in the step S1 into a pre-neutralization control unit, and carrying out pre-neutralization treatment to obtain a pre-supernatant and a pre-bottom flow;
s3, sending the pre-bottom flow obtained in the step S2 to a high-temperature high-acid leaching control unit, and performing high-temperature high-acid leaching to obtain high supernatant to be used in the pre-neutralization control unit;
s4, conveying the pre-supernatant obtained in the step S2 to a low-pollution alum precipitation control unit for alum precipitation treatment, and assisting in matching with intermittent spraying for deironing in the alum precipitation treatment process, specifically, spraying a weakly acidic leachate containing a large amount of ferric ions into a spraying groove with a fixed volume in a spraying mode, and controlling the solution in the spraying groove to contain Fe3+The concentration was 0.6g/L and the pH was 3.5.
EXAMPLE III
The invention provides a system for removing F in a zinc hydrometallurgy system by using a spraying iron-depositing process-、Al3+The zinc hydrometallurgy system comprises a leaching system, wherein the leaching system comprises four control units of neutral leaching, preneutralization, high-temperature high-acid leaching and low-pollution alum precipitation; the method specifically comprises the following steps:
s1, adding the zinc calcine and the waste electrolyte into a neutral leaching control unit together, performing neutral leaching treatment, and controlling F-With Al3+The mass ratio of the zinc oxide to the zinc oxide reaches 8:1, the pH value of neutral leaching is 5.2, and a middle supernatant and a middle underflow are obtained, and after the middle supernatant is purified, electro-deposition is carried out to obtain electro-zinc and waste electrolyte;
s2, feeding the middle bottom flow obtained in the step S1 into a pre-neutralization control unit, and carrying out pre-neutralization treatment to obtain a pre-supernatant and a pre-bottom flow;
s3, sending the pre-bottom flow obtained in the step S2 to a high-temperature high-acid leaching control unit, and performing high-temperature high-acid leaching to obtain high supernatant to be used in the pre-neutralization control unit;
s4, conveying the pre-supernatant obtained in the step S2 to a low-pollution alum precipitation control unit for alum precipitation treatment, and assisting in matching with intermittent spraying for deironing in the alum precipitation treatment process, specifically, spraying a weakly acidic leachate containing a large amount of ferric ions into a spraying groove with a fixed volume in a spraying mode, and controlling the solution in the spraying groove to contain Fe3+The concentration was 0.9g/L and the pH was 4.0.
By adopting the method of the first embodiment of the invention, the zinc sulfate solution in the zinc hydrometallurgy system is purified, and the impurity content (g/L) of the solution before and after treatment is compared as follows:
the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. Method for removing F in zinc hydrometallurgy system by using spray iron deposition process-、Al3+The method is characterized in that the zinc hydrometallurgy system comprises a leaching system, and the leaching system comprises four control units of neutral leaching, preneutralization, high-temperature high-acid leaching and low-pollution alum precipitation; the method specifically comprises the following steps:
s1, adding the zinc calcine and the waste electrolyte into a neutral leaching control unit together, and performing neutral leaching treatment to obtain a middle supernatant and a middle underflow;
s2, feeding the middle bottom flow obtained in the step S1 into a pre-neutralization control unit, and carrying out pre-neutralization treatment to obtain a pre-supernatant and a pre-bottom flow;
s3, sending the pre-bottom flow obtained in the step S2 to a high-temperature high-acid leaching control unit, and performing high-temperature high-acid leaching to obtain high supernatant to be used in the pre-neutralization control unit;
and S4, sending the pre-supernatant obtained in the step S2 to a low-pollution alum precipitation control unit for alum precipitation treatment, and assisting in matching with intermittent spraying for iron removal in the alum precipitation treatment process.
2. The system of claim 1 for removing F in a hydrometallurgical zinc system using a spray iron deposition process-、Al3+Is characterized in that in the neutral leaching process of the step S1, F is controlled-With Al3+The mass ratio of the components reaches 8:1, and the pH value of neutral leaching is 4.8-5.2.
3. The system of claim 1 for removing F in a hydrometallurgical zinc system using a spray iron deposition process-、Al3+The method of (5), wherein after the supernatant is subjected to a purification treatment in step S1, electrowinning is performed to obtain electrozincs and a waste electrolyte.
4. The system of claim 1 for removing F in a hydrometallurgical zinc system using a spray iron deposition process-、Al3+The method is characterized in that the step of S4, the step of intermittently spraying iron removal specifically includes: spraying weakly acidic leachate containing a large amount of ferric ions into a spraying groove with a fixed volume in a spraying mode, and controlling the solution in the spraying groove to contain Fe3+The concentration is less than 1g/L, and the pH value is 3.0-4.0.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1900330A (en) * | 2006-06-30 | 2007-01-24 | 赤峰红烨锌冶炼有限责任公司 | Low pollution vanadium settling iron-removing wet zinc smelting method |
| CN1966407A (en) * | 2005-11-17 | 2007-05-23 | 祥云县飞龙实业有限责任公司 | Fluorine-removing process for zinc sulphate solution |
| CN108977660A (en) * | 2018-08-14 | 2018-12-11 | 云南永昌铅锌股份有限公司 | The method of fluorine removal in Zinc Hydrometallurgy Process |
| CN110106353A (en) * | 2019-05-23 | 2019-08-09 | 江西铜业股份有限公司 | A kind of short route leaching method of zinc abstraction |
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- 2021-11-16 CN CN202111353900.0A patent/CN114058871A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1966407A (en) * | 2005-11-17 | 2007-05-23 | 祥云县飞龙实业有限责任公司 | Fluorine-removing process for zinc sulphate solution |
| CN1900330A (en) * | 2006-06-30 | 2007-01-24 | 赤峰红烨锌冶炼有限责任公司 | Low pollution vanadium settling iron-removing wet zinc smelting method |
| CN108977660A (en) * | 2018-08-14 | 2018-12-11 | 云南永昌铅锌股份有限公司 | The method of fluorine removal in Zinc Hydrometallurgy Process |
| CN110106353A (en) * | 2019-05-23 | 2019-08-09 | 江西铜业股份有限公司 | A kind of short route leaching method of zinc abstraction |
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Application publication date: 20220218 |