CN108467949A - The method of Zn accumulation from zinc-containing solution - Google Patents

The method of Zn accumulation from zinc-containing solution Download PDF

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Publication number
CN108467949A
CN108467949A CN201810153782.0A CN201810153782A CN108467949A CN 108467949 A CN108467949 A CN 108467949A CN 201810153782 A CN201810153782 A CN 201810153782A CN 108467949 A CN108467949 A CN 108467949A
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CN
China
Prior art keywords
zinc
solution
precipitation
sulfide
accumulation
Prior art date
Application number
CN201810153782.0A
Other languages
Chinese (zh)
Inventor
孙宁磊
李勇
刘苏宁
秦丽娟
王霄
彭建华
Original Assignee
中国恩菲工程技术有限公司
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Publication date
Application filed by 中国恩菲工程技术有限公司 filed Critical 中国恩菲工程技术有限公司
Priority to CN201810153782.0A priority Critical patent/CN108467949A/en
Publication of CN108467949A publication Critical patent/CN108467949A/en

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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B19/00Obtaining zinc or zinc oxide
    • C22B19/20Obtaining zinc otherwise than by distilling
    • C22B19/26Refining solutions containing zinc values, e.g. obtained by leaching zinc ores
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The method of the invention discloses a kind of from zinc-containing solution Zn accumulation.This approach includes the following steps:Vulcanizing agent progress sulfide precipitation is added into zinc-containing solution by S1;And S2 is enriched with to obtain crude zinc sulphide by the way of hydraulic classiciation after precipitation generates.It applies the technical scheme of the present invention, first the zinc in zinc-containing solution is precipitated using vulcanizing agent, be enriched with by the way of hydraulic classiciation to obtain crude zinc sulphide after precipitation, this method is easy to operate and safe, of low cost, not outer to introduce metal ion, environmental-friendly.

Description

The method of Zn accumulation from zinc-containing solution
Technical field
The present invention relates to chemical technology fields, in particular to a kind of method of the Zn accumulation from zinc-containing solution.
Background technology
With the rapid development of national economy, the demand of zinc is increasing, depends merely on the primary mineral products Resource Access from zinc The problem of zinc has been difficult to meet demand, and the mouth benefit of primary mineral resources is reduced, and zinc is difficult to recycle in zincky waste liquor is increasingly It is prominent.
For zinc hydrometallurgy manufacturing enterprise, the overall recovery of zinc between 86~96%, it is main influence zinc recovery because Element is waste residue height containing zinc (containing water-soluble zinc 3~5%) and externally discharged waste water (containing zinc 1~2%) containing zinc, however, to ensure that The washing intensity of the water balance of process units, waste residue is limited, and low concentration zinc-containing solution cannot be introduced into process system, eventually lead to zinc The rate of recovery is not high.Meanwhile on the one hand externally discharged waste water causes the pollution of environment containing zinc, on the other hand also result in the very big wave of zinc Take.
Invention content
The present invention is intended to provide a kind of method of the Zn accumulation from zinc-containing solution, to solve in zincky waste liquor in the prior art Zinc is difficult to recycle, wasting technical problem.
To achieve the goals above, according to an aspect of the invention, there is provided a kind of Zn accumulation from zinc-containing solution Method.This approach includes the following steps:Vulcanizing agent progress sulfide precipitation is added into zinc-containing solution by S1;And S2, precipitation generate Afterwards, it is enriched with to obtain crude zinc sulphide by the way of hydraulic classiciation.
Further, crystal seed is returned in S1, during sulfide precipitation makes zinc sulphide and calcium sulfate grow.
Further, the method for Zn accumulation includes:Crude zinc sulphide is sent to metallurgical technology, processing is further purified.
Further, zinc-containing solution is selected from by hydrometallurgy zinc lixiviating solution, wet method system open circuit zinc solution and zinc-containing water It is one or more in the group of composition.
Further, in S1, the temperature of sulfide precipitation is 20~110 DEG C, and the time of sulfide precipitation is 0.5~4 hour.
Further, in S1, sulfide precipitation carries out under normal pressure or micro-positive pressure, and normal pressure or micro-positive pressure are that 1~1.2bar is exhausted Pressure.
Further, in S1, the amount of solid for returning to crystal seed is 1~5 times of newly-generated precipitation capacity.
Further, vulcanizing agent is calcium sulfide.
Further, the addition of vulcanizing agent is 1.05~1.50 times of theoretical amount.
Further, in S2, hydraulic classiciation is enriched with to obtain using shaking table, flotation device, cyclone or solid solid separator Crude zinc sulphide.
It applies the technical scheme of the present invention, first the zinc in zinc-containing solution is precipitated using vulcanizing agent, is used after precipitation The mode of hydraulic classiciation is enriched with to obtain crude zinc sulphide, and this method is easy to operate and safe, of low cost, it is not outer introduce metal from Son, it is environmental-friendly.
Description of the drawings
The accompanying drawings which form a part of this application are used to provide further understanding of the present invention, and of the invention shows Meaning property embodiment and its explanation are not constituted improper limitations of the present invention for explaining the present invention.In the accompanying drawings:
Fig. 1 shows the flow chart according to Zn accumulation in a kind of slave zinc-containing solution of exemplary embodiment of the present invention.
Specific implementation mode
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
It is difficult to recycle for zinc in zincky waste liquor in the prior art, wasting technical problem, the present inventor Propose following technical proposal.
According to a kind of typical embodiment of the present invention, a kind of method of the Zn accumulation from zinc-containing solution is provided.This method Include the following steps:Vulcanizing agent progress sulfide precipitation is added into zinc-containing solution by S1;And S2, after precipitation generates, using waterpower The mode of classification is enriched with to obtain crude zinc sulphide.
It applies the technical scheme of the present invention, first the zinc in zinc-containing solution is precipitated using vulcanizing agent, is used after precipitation The mode of hydraulic classiciation is enriched with to obtain crude zinc sulphide, and this method is easy to operate and safe, of low cost, it is not outer introduce metal from Son (for example, vulcanizing agent is calcium sulfide, reaction generates metal sulphide precipitation and gypsum, is introduced without other ions), it is environmental-friendly.
Preferably, crystal seed is returned in S1, during sulfide precipitation makes zinc sulphide and calcium sulfate grow, and can make zinc faster more Adequately it is precipitated out;Preferably, the amount of solid for returning to crystal seed is 1~5 times of newly-generated precipitation capacity.
Preferably, the method for Zn accumulation further comprises:Crude zinc sulphide is sent to metallurgical technology and is further purified Processing, having can preferably be purified using the crude zinc sulphide being recovered in this way, and then preferably be utilized.
According to a kind of typical embodiment of the present invention, zinc-containing solution is selected from by hydrometallurgy zinc lixiviating solution, wet method system It is one or more in the group that zinc solution and zinc-containing water form of opening a way, naturally it is also possible to which that method using the present invention is enriched with other Zinc in zinc-containing solution, it is not limited to this.
Preferably, in S1, the temperature of sulfide precipitation is 20~110 DEG C, this temperature condition is wide in range, is easy to realization of industrialization, Also sulfide precipitation can be made to be smoothed out;Preferably, in S1, sulfide precipitation carries out under normal pressure or micro-positive pressure, normal pressure or it is micro- just Pressure is 1~1.2bar absolute pressures, to ensure that zinc is more fully precipitated out;Preferably, in S1, the time of sulfide precipitation is 0.5~4 Hour, ensure that zinc is more fully precipitated out from the time.
According to a kind of typical embodiment of the present invention, vulcanizing agent is calcium sulfide, and reaction generates metal sulphide precipitation and stone Cream is introduced without other ions.
Preferably, the addition of vulcanizing agent is 1.05~1.50 times of theoretical amount, is protected in the case where not wasting reagent Card zinc is more fully precipitated out.
According to a kind of typical embodiment of the present invention, hydraulic classiciation is using shaking table, flotation device, cyclone or solid separation Device is enriched with to obtain the crude zinc sulphide.The advantageous effect further illustrated the present invention below in conjunction with embodiment.
Embodiment 1
Zinc-containing solution is zinc abstraction factory waste water, is 0.2g/L containing zinc.
The step of Zn accumulation, is specific as follows:
1L zinc-containing solutions are taken, calcium sulfide (use level coefficient 1.2) is added into zinc-containing solution and carries out sulfide precipitation, sulfide precipitation Temperature be 80 DEG C, pressure be 1~1.2bar absolute pressures, the time be 2 hours, enclosed system;
S2, (direct yield after precipitation generates>99.9%), hydrocyclone is recycled to be enriched with zinc sulphide, calcium sulfate is discharged, it is rich The high-grade vulcanization zinc product of output after collection, zinc ult rec are 85%.
Embodiment 2
Zinc-containing solution is that zinc-containing solution is zinc abstraction factory waste water, is 0.2g/L containing zinc.
The step of Zn accumulation, is specific as follows:
1L zinc-containing solutions are taken, calcium sulfide (use level coefficient 1.05) is added into zinc-containing solution and carries out sulfide precipitation, vulcanization is heavy The temperature in shallow lake is 20 DEG C, and pressure is 1~1.2bar absolute pressures, and the time is 4 hours, enclosed system;
(direct yield after precipitation generates>99.9%), flotation device is recycled to be enriched with zinc sulphide, calcium sulfate is discharged, is produced after enrichment Go out high-grade vulcanization zinc product, zinc ult rec is 85%.
Embodiment 3
Zinc-containing solution is Zn scrap returns infusion solution, is 15g/L containing zinc.
The step of Zn accumulation, is specific as follows:
1L zinc-containing solutions are taken, calcium sulfide (use level coefficient 1.50) is added into zinc-containing solution and carries out sulfide precipitation, vulcanization is heavy The temperature in shallow lake is 110 DEG C, and pressure is 1~1.2bar absolute pressures, and the time is 0.5 hour, enclosed system;
(direct yield after precipitation generates>99.9%), hydrocyclone is recycled to be enriched with zinc sulphide, calcium sulfate, enrichment is discharged The high-grade vulcanization zinc product of output afterwards, zinc ult rec are 80%.
Embodiment 4
Zinc-containing solution is Zn scrap returns infusion solution, is 15g/L containing zinc.
The step of Zn accumulation, is specific as follows:
1L zinc-containing solutions are taken, calcium sulfide (use level coefficient 1.05) is added into zinc-containing solution and carries out sulfide precipitation, vulcanization is heavy The temperature in shallow lake is 20 DEG C, and pressure is 1~1.2bar absolute pressures, and the time is 4 hours, enclosed system;
(direct yield after precipitation generates>99.9%), hydrocyclone is recycled to be enriched with zinc sulphide, calcium sulfate, enrichment is discharged The high-grade vulcanization zinc product of output afterwards, zinc ult rec are 80%.
It can be seen from the above description that the above embodiments of the present invention realize following technique effect:First use sulphur Agent precipitates the zinc in zinc-containing solution, is enriched with by the way of hydraulic classiciation to obtain crude zinc sulphide after precipitation, we Method is easy to operate and safe, of low cost, not outer introducing metal ion, environmental-friendly.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, any made by repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of method of the Zn accumulation from zinc-containing solution, which is characterized in that include the following steps:
Vulcanizing agent progress sulfide precipitation is added into zinc-containing solution by S1;And
S2 is enriched with to obtain crude zinc sulphide by the way of hydraulic classiciation after precipitation generates.
2. according to the method described in claim 1, it is characterized in that, returning to crystal seed in the S1, during sulfide precipitation makes sulphur Change zinc and calcium sulfate growth.
3. according to the method described in claim 1, it is characterized in that, the method for the Zn accumulation further comprises:It will be described thick Zinc sulphide processed send to metallurgical technology and processing is further purified.
4. according to the method described in claim 1, it is characterized in that, the zinc-containing solution be selected from by hydrometallurgy zinc lixiviating solution, It is one or more in the group of wet method system open circuit zinc solution and zinc-containing water composition.
5. according to the method described in claim 1, it is characterized in that, in the S1, the temperature of sulfide precipitation is 20~110 DEG C, The time of sulfide precipitation is 0.5~4 hour.
6. according to the method described in claim 1, it is characterized in that, in the S1, sulfide precipitation under normal pressure or micro-positive pressure into Row, the normal pressure or micro-positive pressure are 1~1.2bar absolute pressures.
7. according to the method described in claim 1, it is characterized in that, in the S1, the amount of solid for returning to crystal seed is newly-generated heavy 1~5 times of shallow lake amount.
8. according to the method described in claim 1, it is characterized in that, in the S2, the vulcanizing agent is calcium sulfide.
9. the method according to the description of claim 7 is characterized in that the addition of the vulcanizing agent be theoretical amount 1.05~ 1.50 again.
10. according to the method described in claim 1, it is characterized in that, in the S2, hydraulic classiciation is using shaking table, flotation device, rotation Stream device or solid solid separator are enriched with to obtain the crude zinc sulphide.
CN201810153782.0A 2018-02-22 2018-02-22 The method of Zn accumulation from zinc-containing solution CN108467949A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109696339A (en) * 2018-12-13 2019-04-30 中国科学院生态环境研究中心 A kind of sample pretreating method that the heavy metal ion suitable for water quickly detects

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CN103343226A (en) * 2013-07-01 2013-10-09 吉首市诚技科技开发有限责任公司 Method and system for recycling zinc from low-concentration zinc containing solution
CN104261526A (en) * 2014-09-17 2015-01-07 哈尔滨工业大学深圳研究生院 Treatment method of heavy metal wastewater

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN103343226A (en) * 2013-07-01 2013-10-09 吉首市诚技科技开发有限责任公司 Method and system for recycling zinc from low-concentration zinc containing solution
CN104261526A (en) * 2014-09-17 2015-01-07 哈尔滨工业大学深圳研究生院 Treatment method of heavy metal wastewater

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109696339A (en) * 2018-12-13 2019-04-30 中国科学院生态环境研究中心 A kind of sample pretreating method that the heavy metal ion suitable for water quickly detects

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Application publication date: 20180831