CN108842072A - A kind of leaching liquid and extract technology of zinc - Google Patents
A kind of leaching liquid and extract technology of zinc Download PDFInfo
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- CN108842072A CN108842072A CN201810969985.7A CN201810969985A CN108842072A CN 108842072 A CN108842072 A CN 108842072A CN 201810969985 A CN201810969985 A CN 201810969985A CN 108842072 A CN108842072 A CN 108842072A
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- zinc
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
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- 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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- Materials Engineering (AREA)
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- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
A kind of leaching liquid and extract technology of zinc, belong to zinc preparation method technical field.It is characterized in that, group becomes the raw material of water and following parts by weight：31.2 ~ 38.6 parts of iron chloride, 49.8 ~ 58.7 parts of sodium chloride, 4.3 ~ 6.2 parts of yttrium chloride, 4.2 ~ 6.7 parts of hydrochloric acid.Leaching step：Zinc concentrate is added to the leaching liquid of zinc, the solid-to-liquid ratio g of zinc concentrate and zinc leaching liquid after broken：L is 1 ~ 3：4~7；It carries out leaching while carrying out electrochemical reduction under agitation, leaching temperature is 40 DEG C ~ 50 DEG C, and leaching time is 2.5h ~ 3h；0.01% ~ 1% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 obtains zinc chloride through evaporative crystallization, is back to the reuse of zinc leaching liquid after the steam condensation evaporated.This leaching liquid and extract technology leach the zinc in mine adequately.Leaching liquid used can be recycled after isolating required zinc.
Description
Technical field
A kind of leaching liquid and extract technology of zinc, belong to zinc preparation method technical field.
Background technique
Zinc concentrate be usually by zinc zinc ore or zinc-containing ores through techniques such as broken, ball milling, froth flotations reaching for producing
To the higher ore of zinc content of national standard.Alloy can be made with a variety of non-ferrous metals in zinc, wherein most importantly zinc and copper,
The brass etc. of the compositions such as tin, zinc, can also be with the composition diecasting alloys such as aluminium, magnesium, copper.Zinc is mainly used for steel, metallurgy, machinery, electricity
Gas, chemical industry, light industry, military affairs and medicine and other fields.The preparation method of zinc mainly includes following several at present：1）By marmatite or
Zincblende is sintered into zinc oxide in air, is then restored to obtain the final product with charcoal, but the purity of gained zinc is lower；2）By zinc oxide and
Coke mixing, heating causes 1373K ~ 1573K in blast furnace, comes out zinc distillation, purity about 98%；But energy consumption is excessively high, 3）With
After sulfuric acid leaching is at zinc sulfate, by controlling pH, make zinc be dissolved as zinc sulfate and the hydrolysis of the impurity such as iron arsenic antimony be converted into precipitate into
Enter in leached mud, the impurity such as the copper cadmium that zinc powder removes in filtrate is added, then be deposited zinc with electrolysis method, the zinc produced is pure
It spends higher（About 99.99%）, but this method, the recovery rate of zinc is not high enough, and preparation efficiency is relatively low.
Summary of the invention
The technical problem to be solved by the present invention is to：Overcome the deficiencies of the prior art and provide a kind of high production efficiency, the energy disappears
Consume the leaching liquid and extract technology of few zinc.
The technical solution adopted by the present invention to solve the technical problems is：The leaching liquid of the zinc, which is characterized in that group becomes
The raw material of water and following parts by weight：31.2 ~ 38.6 parts of iron chloride, 49.8 ~ 58.7 parts of sodium chloride, 4.3 ~ 6.2 parts of yttrium chloride, hydrochloric acid
4.2 ~ 6.7 parts.
Zinc leaching liquid of the invention is suitble to directly quickly be leached from ore, and the zinc powder as seed is being added
It afterwards, can more completely leaching separation goes out by the zinc in mineral.Can efficiently, completely by the zinc leaching separation in zinc ore
Out.Leaching liquid of the invention can be reused, without discharging of waste liquid, environmental protection and energy saving.
Preferably, group become water and following parts by weight 49.8 ~ 58.7 parts of 31.2 ~ 38.6 parts of raw material iron chloride, sodium chloride,
4.7 ~ 5.4 parts of yttrium chloride, 4.7 ~ 5.7 parts of hydrochloric acid.Preferred zinc leaching liquid proportion can be in the environment of milder faster
Complete leaching.
Preferably, the mass ratio of the yttrium chloride and hydrochloric acid is 1：1.05.Preferred proportion can be further improved leaching
Efficiency.
A kind of extract technology of zinc, which is characterized in that include the following steps：
1）Zinc concentrate is added to the leaching liquid of any one of claim 1 ~ 3 zinc, zinc concentrate and zinc leaching liquid after broken
Solid-to-liquid ratio g：L is 1 ~ 3：4~7；It carries out leaching while carrying out electrochemical reduction under agitation, leaching temperature is 80 DEG C ~ 95
DEG C, leaching time is 2h ~ 3h；
2）0.01% ~ 1% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 is through evaporative crystallization
Zinc chloride is obtained, is back to the reuse of zinc leaching liquid after the steam condensation evaporated.
The present invention provide it is a kind of directly leached by zinc ore, obtain the technique of zinc chloride, zinc chloride can be directly as
Product is applied, and zinc chloride can also be given to subsequent process and obtain zinc metal.Key of the invention is leaching liquid, zinc leaching
Take liquid be suitble to directly quickly leached from ore, be added as the zinc powder of seed after, can by the zinc in mineral compared with
Complete leaching separation goes out.It realizes and efficiently, completely goes out the zinc leaching separation in zinc ore.Leaching liquid of the invention can
It reuses, without discharging of waste liquid, environmental protection and energy saving.Preparation process of the invention is not destroyed to remaining element in ore,
After leaching zinc out, remaining element is easier to separate and produce.
Preferably, the content of the Zinc in Zinc Concentrates is calculated in mass percent greater than 40%.Technique of the invention is especially suitable
Close and continuous two step is carried out to the higher ore of Zn content leach, realize efficient, complete zinc, sulphur content from.
Preferably, step 1）Described in leaching temperature be 80 DEG C ~ 85 DEG C, leaching time be 2.0 h ~ 2.5h.The leaching
Condition meets preferred zinc leaching liquid proportion leaching.
Preferably, step 1）The solid-to-liquid ratio g of middle zinc concentrate and zinc leaching liquid：L is 2：5~6.Preferred zinc concentrate and zinc soak
Take the solid-to-liquid ratio of liquid that can faster complete to leach.
Preferably, step 2）The amount of middle zinc powder is the 0.5% ~ 1% of Zinc Concentrates Quality.The seed zinc powder of preferred amounts can be faster
The completion leaching of speed.
Preferably, step 1）Described in progress electrochemical reduction voltage be the V of 10V ~ 30, electric current be 10 A ~ 100A, institute
Electrode is tungsten electrode.Preferred electrochemical reduction condition can preferably cooperate with leaching condition, more efficiently, completely
Separation.
Compared with prior art, possessed beneficial effect of the invention is：This leaching liquid and extract technology make in mine
Zinc is adequately leached.Leaching liquid used can be recycled after isolating required zinc, and the mine generated
It is standby that slag can be used for further made of metal, after extracting zinc, the concentration of residual metallic element double it is even more,
Keep the refinement of residual metallic element more convenient.This preparation process is not only able to efficiently prepare zinc metal, and required temperature
It spends that lower, energy consumption is smaller, is generated in the process without any exhaust gas, waste residue, waste liquid, energy conservation and environmental protection.
Specific embodiment
The present invention will be further described combined with specific embodiments below, and wherein embodiment 1 is best implements.
Embodiment 1
1）Zinc concentrate is added to the leaching liquid of zinc, it is 43.2% that the content of Zinc in Zinc Concentrates, which is calculated in mass percent, after broken.Zinc
The solid-to-liquid ratio g of concentrate and zinc leaching liquid：L is 2：5.6；It carries out leaching while carrying out electrochemical reduction under agitation, electrification
The voltage for learning reduction is 15 V, and electric current 50A, electrode used is tungsten electrode；Leaching temperature is 80 DEG C, leaching time 2h；
The leaching liquid of zinc, which is characterized in that group becomes the raw material of water and following parts by weight：35.2 parts of iron chloride, 54.7 parts of sodium chloride, chlorine
Change 5.1 parts of yttrium, 5.2 parts of hydrochloric acid；
2）0.61% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 is obtained through evaporative crystallization
Zinc chloride is back to the reuse of zinc leaching liquid after the steam condensation evaporated；
Detecting the Zn content in filter residue Y1 is 0.001%.
Embodiment 2
1）Zinc concentrate is added to the leaching liquid of zinc, it is 43.2% that the content of Zinc in Zinc Concentrates, which is calculated in mass percent, after broken.Zinc
The solid-to-liquid ratio g of concentrate and zinc leaching liquid：L is 2：5；It carries out leaching under agitation while carrying out electrochemical reduction, electrochemistry
The voltage of reduction is 15V, and electric current 30A, electrode used is tungsten electrode；Leaching temperature is 85 DEG C, leaching time 2.5h；Zinc
Leaching liquid, which is characterized in that group become water and following parts by weight raw material：33.2 parts of iron chloride, 55.7 parts of sodium chloride, chlorination
5.4 parts of yttrium, 5.7 parts of hydrochloric acid；
2）1% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 obtains chlorine through evaporative crystallization
Change zinc, is back to the reuse of zinc leaching liquid after the steam condensation evaporated；
Detecting the Zn content in filter residue Y1 is 0.001%.
Embodiment 3
1）Zinc concentrate is added to the leaching liquid of zinc, it is 43.2% that the content of Zinc in Zinc Concentrates, which is calculated in mass percent, after broken.Zinc
The solid-to-liquid ratio g of concentrate and zinc leaching liquid：L is 2：6；It carries out leaching under agitation while carrying out electrochemical reduction, electrochemistry
The voltage of reduction is 25 V, and electric current 70A, electrode used is tungsten electrode；Leaching temperature is 80 DEG C, and leaching time is 2 h；Zinc
Leaching liquid, which is characterized in that group become water and following parts by weight raw material：37.6 parts of iron chloride, 51.8 parts of sodium chloride, chlorination
4.7 parts of yttrium, 4.7 parts of hydrochloric acid；
2）0.5% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 is obtained through evaporative crystallization
Zinc chloride is back to the reuse of zinc leaching liquid after the steam condensation evaporated；
Detecting the Zn content in filter residue Y1 is 0.001%.
Embodiment 4
1）Zinc concentrate is added to the leaching liquid of zinc, it is 43.2% that the content of Zinc in Zinc Concentrates, which is calculated in mass percent, after broken.Zinc
The solid-to-liquid ratio g of concentrate and zinc leaching liquid：L is 1：7；It carries out leaching under agitation while carrying out electrochemical reduction, electrochemistry
The voltage of reduction is 10V, and electric current is 10 A, and electrode used is tungsten electrode；Leaching temperature is 90 DEG C, leaching time 3h；Zinc
Leaching liquid, which is characterized in that group become water and following parts by weight raw material：31.2 parts of iron chloride, 58.7 parts of sodium chloride, chlorination
4.3 parts of yttrium, 4.2 parts of hydrochloric acid；
2）0.1% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 is obtained through evaporative crystallization
Zinc chloride is back to the reuse of zinc leaching liquid after the steam condensation evaporated；
Detecting the Zn content in filter residue Y1 is 0.004%.
Embodiment 5
1）Zinc concentrate is added to the leaching liquid of zinc, it is 43.2% that the content of Zinc in Zinc Concentrates, which is calculated in mass percent, after broken.Zinc
The solid-to-liquid ratio g of concentrate and zinc leaching liquid：L is 3：4；It carries out leaching under agitation while carrying out electrochemical reduction, electrochemistry
The voltage of reduction is 30 V, and electric current 100A, electrode used is tungsten electrode；Leaching temperature is 95 DEG C, leaching time 2.8h；
The leaching liquid of zinc, which is characterized in that group becomes the raw material of water and following parts by weight：38.6 parts of iron chloride, 49.8 parts of sodium chloride, chlorine
Change 6.2 parts of yttrium, 6.7 parts of hydrochloric acid；
2）0.01% ~ 1% 0.5% ~ 1% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 warp
Evaporative crystallization obtains zinc chloride, is back to the reuse of zinc leaching liquid after the steam condensation evaporated；
Detecting the Zn content in filter residue Y1 is 0.005%.
Comparative example 1
1）Zinc concentrate is added to the leaching liquid of zinc, it is 43.2% that the content of Zinc in Zinc Concentrates, which is calculated in mass percent, after broken.Zinc
The solid-to-liquid ratio g of concentrate and zinc leaching liquid：L is 2：5.6；It carries out leaching while carrying out electrochemical reduction under agitation, electrification
The voltage for learning reduction is 15 V, and electric current 50A, electrode used is tungsten electrode；Leaching temperature is 40 DEG C, and leaching time is
2.5h；The leaching liquid of zinc, which is characterized in that group becomes the raw material of water and following parts by weight：35.2 parts of iron chloride, sodium chloride 54.7
Part, 5.2 parts of hydrochloric acid；
2）0.61% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 is obtained through evaporative crystallization
Zinc chloride is back to the reuse of zinc leaching liquid after the steam condensation evaporated；
Detecting the Zn content in filter residue Y1 is 39.4%.
Comparative example 2
1）Zinc concentrate is added to the leaching liquid of zinc, it is 43.2% that the content of Zinc in Zinc Concentrates, which is calculated in mass percent, after broken.Zinc
The solid-to-liquid ratio g of concentrate and zinc leaching liquid：L is 2：5.6；It carries out leaching while carrying out electrochemical reduction under agitation, electrification
The voltage for learning reduction is 15 V, and electric current 50A, electrode used is tungsten electrode；Leaching temperature is 40 DEG C, and leaching time is
2.5h；The leaching liquid of zinc, which is characterized in that group becomes the raw material of water and following parts by weight：54.7 parts of iron chloride, sodium chloride 35.2
Part, 5.1 parts of yttrium chloride, 5.2 parts of hydrochloric acid；
2）0.61% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 is obtained through evaporative crystallization
Zinc chloride is back to the reuse of zinc leaching liquid after the steam condensation evaporated；
Detecting the Zn content in filter residue Y1 is 28.4%.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (9)
1. a kind of leaching liquid of zinc, which is characterized in that group becomes the raw material of water and following parts by weight：31.2 ~ 38.6 parts of iron chloride,
49.8 ~ 58.7 parts of sodium chloride, 4.3 ~ 6.2 parts of yttrium chloride, 4.2 ~ 6.7 parts of hydrochloric acid.
2. a kind of leaching liquid of zinc according to claim 1, it is characterised in that：Group becomes the raw material of water and following parts by weight
31.2 ~ 38.6 parts of iron chloride, 49.8 ~ 58.7 parts of sodium chloride, 4.7 ~ 5.4 parts of yttrium chloride, 4.7 ~ 5.7 parts of hydrochloric acid.
3. a kind of leaching liquid of zinc according to claim 1, it is characterised in that：The mass ratio of the yttrium chloride and hydrochloric acid
It is 1：1.05.
4. a kind of extract technology of zinc, which is characterized in that include the following steps：
1）Zinc concentrate is added to the leaching liquid of any one of claim 1 ~ 3 zinc, zinc concentrate and zinc leaching liquid after broken
Solid-to-liquid ratio g：L is 1 ~ 3：4~7；It carries out leaching while carrying out electrochemical reduction under agitation, leaching temperature is 80 DEG C ~ 95
DEG C, leaching time is 2h ~ 3h；
2）0.01% ~ 1% zinc powder of Zinc Concentrates Quality is added, filtrate X1 and filter residue Y1 is obtained by filtration；Filtrate X1 is through evaporative crystallization
Zinc chloride is obtained, is back to the reuse of zinc leaching liquid after the steam condensation evaporated.
5. a kind of extract technology of zinc according to claim 4, it is characterised in that：The content of the Zinc in Zinc Concentrates with
Mass percentage is greater than 40%.
6. a kind of extract technology of zinc according to claim 4, it is characterised in that：Step 1）Described in leaching temperature be
80 DEG C ~ 85 DEG C, leaching time is 2h ~ 2.5h.
7. a kind of extract technology of zinc according to claim 4, it is characterised in that：Step 1）Middle zinc concentrate and zinc leaching liquid
Solid-to-liquid ratio g：L is 2：5~6.
8. a kind of extract technology of zinc according to claim 4, it is characterised in that：Step 2）The amount of middle zinc powder is zinc concentrate
The 0.5% ~ 1% of quality.
9. a kind of extract technology of zinc according to claim 4, it is characterised in that：Step 1）Described in progress electrochemistry also
Former voltage is the V of 10V ~ 30, and electric current is 10 A ~ 100A, and electrode used is tungsten electrode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810969985.7A CN108842072A (en) | 2018-08-24 | 2018-08-24 | A kind of leaching liquid and extract technology of zinc |
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| CN201810969985.7A CN108842072A (en) | 2018-08-24 | 2018-08-24 | A kind of leaching liquid and extract technology of zinc |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197766A (en) * | 1998-03-20 | 1998-11-04 | 水志良 | Reclamation method and equipment of zinc chloride from zinc-containing organic waste liquid |
| CN101090983A (en) * | 2004-10-21 | 2007-12-19 | 安格洛操作有限公司 | Leaching process in the presence of hydrochloric acid for the recovery of a value metal from an ore |
| CN103589873A (en) * | 2013-11-27 | 2014-02-19 | 郴州市金贵银业股份有限公司 | Method for recovering valuable metals from silver-zinc slag |
| CN105779774A (en) * | 2016-04-22 | 2016-07-20 | 王树立 | Lead concentrate and zinc anode mud combined recycling method |
| CN105936979A (en) * | 2016-07-06 | 2016-09-14 | 广东新生环保科技股份有限公司 | Lead recovery agent for lead-containing wastes and application method thereof |
| CN106011474A (en) * | 2016-05-24 | 2016-10-12 | 郴州市金贵银业股份有限公司 | Silver-zinc crust wet process comprehensive recovery method |
| CN106222431A (en) * | 2016-08-30 | 2016-12-14 | 北京矿冶研究总院 | Method for comprehensively recovering rare and dispersed noble metals from smelting furnace slag |
-
2018
- 2018-08-24 CN CN201810969985.7A patent/CN108842072A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197766A (en) * | 1998-03-20 | 1998-11-04 | 水志良 | Reclamation method and equipment of zinc chloride from zinc-containing organic waste liquid |
| CN101090983A (en) * | 2004-10-21 | 2007-12-19 | 安格洛操作有限公司 | Leaching process in the presence of hydrochloric acid for the recovery of a value metal from an ore |
| CN103589873A (en) * | 2013-11-27 | 2014-02-19 | 郴州市金贵银业股份有限公司 | Method for recovering valuable metals from silver-zinc slag |
| CN105779774A (en) * | 2016-04-22 | 2016-07-20 | 王树立 | Lead concentrate and zinc anode mud combined recycling method |
| CN106011474A (en) * | 2016-05-24 | 2016-10-12 | 郴州市金贵银业股份有限公司 | Silver-zinc crust wet process comprehensive recovery method |
| CN105936979A (en) * | 2016-07-06 | 2016-09-14 | 广东新生环保科技股份有限公司 | Lead recovery agent for lead-containing wastes and application method thereof |
| CN106222431A (en) * | 2016-08-30 | 2016-12-14 | 北京矿冶研究总院 | Method for comprehensively recovering rare and dispersed noble metals from smelting furnace slag |
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Application publication date: 20181120 |