CN105039712B - Technology for recycling valuable metal from jarosite slag - Google Patents
Technology for recycling valuable metal from jarosite slag Download PDFInfo
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- CN105039712B CN105039712B CN201510500948.8A CN201510500948A CN105039712B CN 105039712 B CN105039712 B CN 105039712B CN 201510500948 A CN201510500948 A CN 201510500948A CN 105039712 B CN105039712 B CN 105039712B
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- CN
- China
- Prior art keywords
- iron vitriol
- vitriol slag
- water
- liquid
- quality
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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
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Manufacture And Refinement Of Metals (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a technology for recycling valuable metal from jarosite slag. The technology is characterized in that a dispersing agent is added to water to be evenly stirred; then, jarosite slag and a reducing agent are added to be evenly stirred; and lime is added to be evenly stirred to obtain sediment containing ferric oxide and calcium sulfate, and liquid and solid are separated. A water repellent agent and a floating agent are added to liquid, and valuable metal is recycled. A solution obtained after the valuable metal is recycled can be used as water for dissolving jarosite slag to be recycled, and the solid sediment can be used as raw materials used in the cement production process.
Description
Technical field
The present invention relates to the method for metal recovery, more particularly to a kind of that valuable metal is reclaimed from iron vitriol slag (ammonium jarosite)
Method.
Background technology
Nearly ten years, China's lead zinc metallurgy maintains the impetus of rapid growth, and 2010, lead zinc total output reached 958.10
Ten thousand tons.For the wet processing Sheng electricity zinc factory for producing 100000 tons per year, if zinc concentrate iron content is in terms of 8%, the yellow ammonium ferrum of annual output
Vitriol is about 5.3 ten thousand tons, slag field is typically built nearby and is stored up, and not only takes the land resource of preciousness, and due to iron vitriol slag stability
Difference (pH=1.5-2.5 of stable existence), heap sustainability is bad, and the heavy metal in iron vitriol slag, such as Zn, Cu, Cd, Pb, Ag and
Sb etc., the continuous dissolution of meeting is so as to polluted underground water and soil [Chen Yongming, Tang Motang, the 7th phase of volume 19 under the conditions of storing up naturally
China YouSe Acta Metallurgica Sinica Yang Sheng is extra large, waits .NaOH to decompose the new technology of iron vitriol slag containing indium [J]. China YouSe Acta Metallurgica Sinica, 2009,
19(7)：1322-1331；Hou little Qiang, Zheng Xutao, Guo Congsheng, etc. impact [J] of the extreme environment to siderotil Residue Solidified with Cement.
Non-ferrous metal scientific and engineering, 2014,5 (3)：56-58].
China's lead zinc metal production has occupied the first in the world for years.While product production capacity is developed rapidly, production
During the process problem of ammonium jarosite progressively show especially, be not only related to the comprehensive cyclic utilization of resource, and be more related to
Impact to natural environment.
Jiang Kaixi et al. discloses a kind of method of iron vitriol slag synthetical recovery zinc, by carrying out being sufficiently stirred for acid to iron vitriol slag
Property washing, with Calx and residual acid in liquid after washing, Fe in solution3+Hydrolytic precipitation, realizes the separation of zinc and ferrum, except molten after ferrum
Liquid does organic faciess with P204- kerosene, zinc is extracted [Jiang Kaixi, Liu Sanping, Wang Haibei, etc..A kind of iron vitriol slag synthetical recovery
The method of zinc：Chinese patent, 201410218878 [P] .2014.05.22].In the technique Calx and residual acid in liquid after washing,
Fe in solution3+Hydrolytic precipitation, obtains Fe (OH)3, hydrated ferric oxide. is colloid, it is not easy to filtered, in addition, hydrated ferric oxide. adsorbent solution
In metal ion, reduce recovery to valuable metal.
The content of the invention
It is an object of the invention to provide a kind of method of valuable metal recovery, it is possible to resolve the environmental problem of ammonium jarosite, become
Waste be changed into values.
To reach object above, the present invention is adopted the following technical scheme that and is achieved：
A kind of technique that valuable metal is reclaimed from iron vitriol slag, it is characterised in that comprise the steps：
(1) dispersant is added in water, iron vitriol slag and reducing agent is stirring evenly and then adding into, uniform rear addition stone is stirred for
Ash, continues to stir, and obtains the solution containing ferrum oxide and calcium sulfate precipitation；Wherein, the quality of water is iron vitriol slag quality
300%；The quality of Calx is the 10% of iron vitriol slag quality；Dispersant is triethyl group hexyl phosphoric acid, sodium lauryl sulphate, methyl
One kind in amylalcohol, polyacrylamide, fatty acid polyethylene glycol ester, addition is the 1-5% of iron vitriol slag quality；Reducing agent is sulfur
One kind in iron mine, iron filings, addition is the 1-5% of iron vitriol slag quality；
(2) solution is carried out into solid-liquid separation, obtains the liquid of ferrum oxide and calcium sulfate precipitation thing；
(3) water-repelling agent and leafing agent are added in a liquid, reclaim valuable metal, wherein, water-repelling agent is alkyl dithio carbon
Sour sodium, ethyl dithiocarbonic acids sodium, propyl disulfide are for sodium carbonate, butyl dithiocarbonic acids sodium, diamyl disulfide in sodium carbonate
One kind, addition is the 1-5% of iron vitriol slag quality；Leafing agent is the one kind in Pinaster oil, isomery hexanol, capryl alcohol, and addition is
The 1-5% of iron vitriol slag quality.
In above-mentioned technique, the precipitate of ferrum oxide and calcium sulfate obtained by step (2) can be used to produce the Gypsum Fibrosum of cement.
Step (3) reclaims the solution after valuable metal, can recycle as the water of dissolving iron vitriol slag in step (1).
The present invention technological principle be：Ammonium jarosite will decompose in aqueous slkali, produce hydrated ferric oxide. and sulfate；
If there is ferrous ion in solution, ammonium jarosite will have ferroso-ferric oxide to produce after decomposing, and reaction equation is as follows：
2(NH4)Fe3(SO4)2(OH)6+ 6NaOH=
3Na2SO4+(NH4)2SO4+6Fe(OH)3↓
(1)
2(NH4)Fe3(SO4)2(OH)6+3Fe2++ 6NaOH=
3Na2SO4+(NH4)2SO4+3Fe3O4↓+6H2O+6H+
(2)
The present invention adds dispersant in water, is conducive to the dispersion of iron vitriol slag so as in being suspended in water, accelerates it with alkali
Response speed.Reducing agent is added, by part trivalent iron ion, is changed into divalent iron ion, ferroso-ferric oxide precipitation is obtained, it is to avoid
Produce ferric hydroxide precipitate；Be conducive to the separation of liquid and solid, it is to avoid hydrated ferric oxide. adsorbs valuable metal ions.Calx is dissolved in
After water, it is changed into calcium hydroxide, with alkalescence.Using Calx as alkali, the characteristics of with low price.
Different metal ions hydrolytic precipitation, produces Cu (OH)2、Zn(OH)2、Cr(OH)2、Ni(OH)2、Pb(OH)2、Cd
(OH)2、Mn(OH)2、Co(OH)2The pH value of precipitation is respectively 4.6,5.8,5.5,6.1,6.8,7.2,7.6,6.3).By solution
PH value is controlled at 3-4 (pH=1.5-2.5 of iron vitriol slag stable existence), and iron vitriol slag starts to decompose, Zn, Cu, Cd in iron vitriol slag,
Solution is entered in the form of sulfate with the metallic element such as Pb.
Water-repelling agent is added in the solution, changes the hydrophilic performance of metal ion, and produce hydrophobicity so as to can float.Plus
Entering leafing agent makes the air being filled with water be easy to disperse into bubble and stablize bubble.Water-repelling agent and leafing agent are united absorption
In metal ion surface so as to float, it is easy to reclaim metal ion.
The present invention is without " three wastes " discharge.
Specific embodiment
The present invention reclaims the technique of valuable metal from iron vitriol slag and specifically includes：
(1) dispersant is added in water, after stirring；Iron vitriol slag and reducing agent are added, is stirred；Add Calx,
Stir, obtain the solution containing ferrum oxide and calcium sulfate precipitation；
(2) by ferrum oxide and calcium sulfate precipitation and solution separating, liquid is obtained；
(3) water-repelling agent and leafing agent are added in a liquid, and water-repelling agent selects absorption on configuration metal ions Zn, In surfaces, in drift
In the presence of floating agent, liquid surface being floated on, liquid of the surface containing metal being scraped, metal is reclaimed.
The species of various additives and it is shown in table 1 with the proportioning of water, iron vitriol slag.
By the amount of the metal of recovery compared with the amount of siderotil metal in the dreg, the response rate of metal is obtained；The valuable gold of the present invention
The response rate of category (Zn, In) is all higher than 80%.
Table 1
The precipitation of ferrum oxide and calcium sulfate obtained by step (2) solid-liquid separation of the present invention；Can be used as in cement production process
Gypsum Fibrosum use.Step (3) of the present invention is reclaimed solution resulting after valuable metal and can be made as the water of dissolving iron vitriol slag, circulation
With.
Claims (1)
1. it is a kind of from iron vitriol slag reclaim valuable metal technique, it is characterised in that comprise the steps：
(1) dispersant is added in water, iron vitriol slag and reducing agent is stirring evenly and then adding into, uniform rear addition Calx is stirred for, after
It is continuous to stir, the liquid containing ferrum oxide and calcium sulfate precipitation is obtained, the liquid pH value is adjusted to 3~4；Wherein, the quality of water
For the 300% of iron vitriol slag quality；The quality of Calx is the 10% of iron vitriol slag quality；Dispersant be triethyl group hexyl phosphoric acid, 12
One kind in alkyl sodium sulfate, methyl anyl alcohol, polyacrylamide, fatty acid polyethylene glycol ester, addition is iron vitriol slag quality
1-5%；Reducing agent is the one kind in troilite, iron filings, and addition is the 1-5% of iron vitriol slag quality；
(2) liquid containing ferrum oxide and calcium sulfate precipitation is carried out into solid-liquid separation, obtains ferrum oxide and calcium sulfate precipitation thing, and
Solid-liquid separation liquid, the ferrum oxide of gained and the precipitate of calcium sulfate, for producing the Gypsum Fibrosum of cement；
(3) water-repelling agent and leafing agent are added in solid-liquid separation liquid, valuable metal is reclaimed, wherein, water-repelling agent is the sulfur of alkyl two
For sodium carbonate, ethyl dithiocarbonic acids sodium, propyl disulfide are for sodium carbonate, butyl dithiocarbonic acids sodium, diamyl disulfide for sodium carbonate
In one kind, addition for iron vitriol slag quality 1-5%；Leafing agent is the one kind in Pinaster oil, isomery hexanol, capryl alcohol, is added
Measure as the 1-5% of iron vitriol slag quality；
The solution after valuable metal is reclaimed, as the water of dissolving iron vitriol slag in step (1), is recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510500948.8A CN105039712B (en) | 2015-08-14 | 2015-08-14 | Technology for recycling valuable metal from jarosite slag |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510500948.8A CN105039712B (en) | 2015-08-14 | 2015-08-14 | Technology for recycling valuable metal from jarosite slag |
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| CN105039712A CN105039712A (en) | 2015-11-11 |
| CN105039712B true CN105039712B (en) | 2017-05-17 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107324358B (en) * | 2017-06-20 | 2019-03-12 | 谭宏斌 | A kind of iron vitriol slag low-temperature decomposition and the method that resource is separately recovered |
| CN109957656A (en) * | 2019-05-21 | 2019-07-02 | 安徽铜冠有色金属（池州）有限责任公司 | A kind of zinc hydrometallurgy iron vitriol slag recycling and the technique for recycling dilute scattered noble metal |
| CN110724824B (en) * | 2019-10-29 | 2020-11-10 | 中南大学 | Method for extracting valuable heavy metals from jarosite slag through ferrous catalytic conversion |
| CN115247232B (en) * | 2022-03-02 | 2024-04-09 | 广州大鱼创福科技有限公司 | Settling separation method for chalcanthite slag calcified products |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103588251B (en) * | 2013-10-24 | 2015-02-25 | 陕西理工学院 | Technology for preparing infrared reflection pigment and calcium sulfate by ammonioiarosite |
| CN103801192B (en) * | 2014-02-21 | 2015-11-11 | 陕西理工学院 | A kind of technique of cement kiln denitrating flue gas |
| CN103966448A (en) * | 2014-05-22 | 2014-08-06 | 北京矿冶研究总院 | Method for comprehensively recovering zinc from jarosite slag |
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Granted publication date: 20170517 Termination date: 20180814 |