CN103834809A - Treatment method of metal sludge - Google Patents
Treatment method of metal sludge Download PDFInfo
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- CN103834809A CN103834809A CN201210489174.XA CN201210489174A CN103834809A CN 103834809 A CN103834809 A CN 103834809A CN 201210489174 A CN201210489174 A CN 201210489174A CN 103834809 A CN103834809 A CN 103834809A
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- metal
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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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Abstract
The invention relates to a treatment method of metal sludge. The method comprises the steps of dissolving metal sludge into a first acid solution to form a first compound containing first metal cation and first acid anion; extracting the first compound so as to enable a resin material to be reacted with the first compound to form metal ions and a second acid solution; replacing the metal ions, enabling a third acid solution to be reacted with the metal ions to form a second compound containing second metal cation and second acid anion, wherein the concentration of the third acid solution is greater than that of the second acid solution; electrolyzing the second compound to form a metal.
Description
Technical field
The invention relates to a kind for the treatment of process of metal sludge, and relate to especially a kind for the treatment of process of the metal sludge that metal recovery can be recycled.
Background technology
In general, the processing mode of metal sludge mostly adopts incineration method or freezing extraction process.With incineration method, the mode that sees through high temperature 1000 degree barbecues produces metal and ashes.This method can discharge waste gas and cause atmospheric pollution in process, and the energy of the required use of this mode is also more.With freezing extraction process, be to produce metallic crystal and sulfuric acid in the mode of low temperature.The required equipment cost of this method is higher, and amount that can lignin-sludge in its treating processes is little.Therefore, how efficient and take low cost and low air-polluting mode and disengage metal as one of current important topic from metal sludge.
Summary of the invention
The invention provides a kind for the treatment of process of metal sludge, can reduce processing cost and reduce environmental pollution.
The present invention proposes a kind for the treatment of process of metal sludge, and it comprises according to lower step.One metal sludge is dissolved in one first acidic solution, and forms one first compound that contains one first metallic cation and one first acid radical anion.The first compound is carried out to an extraction step, so that a resin material reacts with the first compound, and form a metal ion and one second acidic solution.Metal ion is carried out to a displacement step, so that one the 3rd acidic solution reacts with metal ion, and form one second compound that contains one second metallic cation and one second acid radical anion, wherein the concentration of the 3rd acidic solution is greater than the concentration of the second acidic solution.The second compound is carried out to an electrolysis step, and form a metal.
In one embodiment of this invention, above-mentioned while metal sludge being dissolved in the first acidic solution, be also formed with a suspended substance containing mud, before the first compound is carried out to extraction step, also comprise: carry out a filtration step, leaching containing sludge suspension thing; And carry out a dehydrating step to what be filtered off containing sludge suspension thing, and form a solid waste.
In one embodiment of this invention, above-mentioned resin material comprises porousness vinylbenzene, porousness divinylbenzene or porousness polystyrene.
In one embodiment of this invention, above-mentioned metal sludge comprises copper-contained sludge, nickel-containing sludge, stanniferous mud, zinc-containing sludge, iron containing sludge, titaniferous mud or contains manganese mud.
In one embodiment of this invention, the first above-mentioned acidic solution comprises sulfuric acid, hydrochloric acid or nitric acid.
In one embodiment of this invention, the second above-mentioned acidic solution comprises sulfuric acid, hydrochloric acid or nitric acid.
In one embodiment of this invention, the 3rd above-mentioned acidic solution comprises sulfuric acid, hydrochloric acid or nitric acid.
In one embodiment of this invention, the first above-mentioned compound comprises that sulfuric acid is that metal, nitric acid are that metal or hydrochloric acid are metal.
In one embodiment of this invention, the second above-mentioned compound comprises that sulfuric acid is that metal, nitric acid are that metal or hydrochloric acid are metal.
In one embodiment of this invention, above-mentioned metal ion comprises cupric ion, nickel ion, tin ion, zine ion, iron ion, titanium ion or mn ion.
In one embodiment of this invention, above-mentioned metal comprises copper, nickel, tin, zinc, iron, titanium or manganese.
Based on above-mentioned, because the treatment process of metal sludge of the present invention is the metal that sequentially obtains higher degree through extraction step, displacement step and electrolysis step, incinerate method or freezing extraction process compared to existing employing, the treatment process of metal sludge of the present invention can reduce atmospheric pollution, avoids consuming energy and have the advantages such as reduction process cost in process.
For above-mentioned feature and advantage of the present invention can be become apparent, special embodiment below, and coordinate appended graphic being described in detail below.
Accompanying drawing explanation
Fig. 1 illustrates the schematic flow sheet into the treatment process of a kind of metal sludge of the present invention.
Fig. 2 illustrates the schematic diagram of the equipment that the treatment process of the metal sludge of Fig. 1 adopts.
[main element nomenclature]
S10, S20, S30, S40: step
110: acidifying groove
120: filter vat
130: dewatering tank
140: extraction tank
150: displacement slot
160: metallic reducing storage tanks
170: electrolyzer
Embodiment
Fig. 1 illustrates the schematic flow sheet into the treatment process of a kind of metal sludge of the present invention.Fig. 2 illustrates the schematic diagram of the equipment that the treatment process of the metal sludge of Fig. 1 adopts.Please also refer to Fig. 1 and Fig. 2, in the present embodiment, according to the treatment process of the metal sludge of the present embodiment, first, step S10, in an acidifying groove 110, a metal sludge is dissolved in one first acidic solution, and forms one first compound that contains one first metallic cation and one first acid radical anion.Wherein, metal sludge is for example copper-contained sludge, nickel-containing sludge, stanniferous mud, zinc-containing sludge, iron containing sludge, titaniferous mud or contains manganese mud.The first acidic solution is for example sulfuric acid, hydrochloric acid or nitric acid, and the first compound is for example that sulfuric acid is that metal, nitric acid are that metal or hydrochloric acid are metal.At this, metal sludge illustrates as an example of copper-contained sludge example, and the first acidic solution is take sulfuric acid as example explanation.Therefore, the first compound that the present embodiment forms is a copper sulfate, but not as limit.
It should be noted that, in metal sludge is dissolved in to the first acidic solution and form in copper sulfate, be also formed with a suspended substance containing mud.Therefore,, for the follow-up metal that obtains higher degree, also can, in a filter vat 120 (please refer to Fig. 2), carry out a filtration step, leaching containing sludge suspension thing.Then, be in a dewatering tank 130 (please refer to Fig. 2), carry out a dehydrating step to what be filtered off containing sludge suspension thing, and form a solid waste.Now, after dehydration, last the first acidic solution staying still can be reused again.Filtration step herein and dehydrating step are respectively a selectivity step, and user can also omit these steps according to demand.
Then, refer again to Fig. 1 and Fig. 2, step S20 carries out an extraction step to the first compound in an extraction tank 140, so that a resin material reacts with the first compound, and forms a metal ion and one second acidic solution.Herein, resin material comprises porousness vinylbenzene, porousness divinylbenzene or porousness polystyrene.The object of this step is: make the polymeric amine functional group integration in resin material catch the metallic cation in the first compound, obtain metal ion and the second acidic solution through this ionic reaction.Wherein, metal ion is for example cupric ion, nickel ion, tin ion, zine ion, iron ion, titanium ion or mn ion.The second acidic solution comprises sulfuric acid, hydrochloric acid or nitric acid.At this, metal ion is explanation as an example of cupric ion example, and the second acidic solution is explanation as an example of sulfuric acid example, but not as limit.In addition, ionic reaction formula is herein: CuSO
4+ Ra
+→ Ra
++ Cu
2++ H
2sO
4.
Afterwards, refer again to Fig. 1 and Fig. 2, step S30 carries out a displacement step to metal ion in a displacement slot 150, so that one the 3rd acidic solution reacts with metal ion, and form one second compound that contains one second metallic cation and one second acid radical anion.Particularly, the concentration of the 3rd acidic solution is herein greater than the concentration of the second acidic solution, and this object is that the 3rd acidic solution that sees through high density will form the second compound in the mode of ionic reaction.The 3rd acidic solution is for example sulfuric acid, hydrochloric acid or nitric acid, is that metal, nitric acid are that metal or hydrochloric acid are metal and the second compound is for example sulfuric acid.At this, the 3rd acidic solution illustrates as an example of sulfuric acid example, and the second compound illustrates as an example of copper sulfate example, but not as limit.In addition, ionic reaction formula is herein: Ra
++ Cu
2++ H
2sO
4→ CuSO
4+ Ra
+.
Convenient for successive process, also the second obtained compound can be positioned over to a metallic reducing storage tanks 160 (please refer to Fig. 2), to treat successive process.
Finally, refer again to Fig. 1 and Fig. 2, step S40 carries out an electrolysis step to the second compound in an electrolyzer 170, and forms a metal.Be to form metal through a reduction reaction at this, wherein metal is for example copper, nickel, tin, zinc, iron, titanium or manganese.At this take copper as example explanation.Reduction reaction is herein: CuSO
4+ 2e
-→ Cu+SO
4 2-.So far, so that the metal in metal sludge is disengaged, and reach effect of recycling.
Because the present embodiment is that first saturating superacidulated mode is dissolved in metal sludge in the first acidic solution, extract the metallic cation in the first compound with resin material seeing through afterwards, and obtain metal ion, then, then through the 3rd acidic solution of high density replace metal ion and obtain the second compound.Finally, then see through the mode of electrolysis the second compound and obtain the metal of higher degree.Incinerate method or freezing extraction process compared to existing employing, the treatment process of the metal sludge of the present embodiment can reduce atmospheric pollution, avoids power consumption and can save processing cost in process.
It is worth mentioning that the treatment process of the metal sludge of the present embodiment can be carried out acidification step and displacement step according to the acidic solution of the selection of activated sludge optimization that contains different metal.Those skilled in the art is when can, with reference to the explanation of previous embodiment, according to actual demand, and selecting aforementioned components, to reach required technique effect.
In sum, because the treatment process of metal sludge of the present invention is the metal that sequentially obtains higher degree through extraction step, displacement step and electrolysis step, incinerate method or freezing extraction process compared to existing employing, the treatment process of metal sludge of the present invention can reduce atmospheric pollution, can avoid power consumption and can save processing cost in process.
Although the present invention discloses as above with embodiment; so it is not in order to limit the present invention; under any, in technical field, have and conventionally know the knowledgeable; without departing from the spirit and scope of the present invention; when doing a little change and retouching, thus protection scope of the present invention when depending on after the attached claim person of defining be as the criterion.
Claims (11)
1. a treatment process for metal sludge, comprising:
One metal sludge is dissolved in one first acidic solution, and forms one first compound that contains one first metallic cation and one first acid radical anion;
This first compound is carried out to an extraction step, so that a resin material reacts with this first compound, and form a metal ion and one second acidic solution;
This metal ion is carried out to a displacement step, so that one the 3rd acidic solution reacts with this metal ion, and form one second compound that contains one second metallic cation and one second acid radical anion, wherein the concentration of the 3rd acidic solution is greater than the concentration of this second acidic solution; And
This second compound is carried out to an electrolysis step, and form a metal.
2. the treatment process of metal sludge as claimed in claim 1, while wherein this metal sludge being dissolved in this first acidic solution, is also formed with a suspended substance containing mud, before this first compound is carried out to this extraction step, also comprises:
Carry out a filtration step, leaching containing sludge suspension thing; And
Should carry out a dehydrating step containing sludge suspension thing to what be filtered off, and form a solid waste.
3. the treatment process of metal sludge as claimed in claim 1, wherein this resin material comprises porousness vinylbenzene, porousness divinylbenzene or porousness polystyrene.
4. the treatment process of metal sludge as claimed in claim 1, wherein this metal sludge comprises copper-contained sludge, nickel-containing sludge, stanniferous mud, zinc-containing sludge, iron containing sludge, titaniferous mud or contains manganese mud.
5. the treatment process of metal sludge as claimed in claim 1, wherein this first acidic solution comprises sulfuric acid, hydrochloric acid or nitric acid.
6. the treatment process of metal sludge as claimed in claim 1, wherein this second acidic solution comprises sulfuric acid, hydrochloric acid or nitric acid.
7. the treatment process of metal sludge as claimed in claim 1, wherein the 3rd acidic solution comprises sulfuric acid, hydrochloric acid or nitric acid.
8. the treatment process of metal sludge as claimed in claim 1, wherein this first compound comprises that sulfuric acid is that metal, nitric acid are that metal or hydrochloric acid are metal.
9. the treatment process of metal sludge as claimed in claim 1, wherein this second compound comprises that sulfuric acid is that metal, nitric acid are that metal or hydrochloric acid are metal.
10. the treatment process of metal sludge as claimed in claim 1, wherein this metal ion comprises cupric ion, nickel ion, tin ion, zine ion, iron ion, titanium ion or mn ion.
The treatment process of 11. metal sludges as claimed in claim 1, wherein this metal comprises copper, nickel, tin, zinc, iron, titanium or manganese.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210489174.XA CN103834809B (en) | 2012-11-27 | 2012-11-27 | The treatment process of metal sludge |
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|---|---|---|---|
| CN201210489174.XA CN103834809B (en) | 2012-11-27 | 2012-11-27 | The treatment process of metal sludge |
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| CN103834809A true CN103834809A (en) | 2014-06-04 |
| CN103834809B CN103834809B (en) | 2016-01-20 |
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|---|---|---|---|
| CN201210489174.XA Expired - Fee Related CN103834809B (en) | 2012-11-27 | 2012-11-27 | The treatment process of metal sludge |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040079681A1 (en) * | 2001-12-31 | 2004-04-29 | Lin Yu Cheng | Recycle process for a metal bearing sludge concentrate |
| WO2012026061A1 (en) * | 2010-08-27 | 2012-03-01 | 株式会社日立製作所 | Metal recovery method and metal recovery device |
| CN102758091A (en) * | 2012-07-18 | 2012-10-31 | 中国瑞林工程技术有限公司 | Treatment method for electroplating sludge |
-
2012
- 2012-11-27 CN CN201210489174.XA patent/CN103834809B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040079681A1 (en) * | 2001-12-31 | 2004-04-29 | Lin Yu Cheng | Recycle process for a metal bearing sludge concentrate |
| WO2012026061A1 (en) * | 2010-08-27 | 2012-03-01 | 株式会社日立製作所 | Metal recovery method and metal recovery device |
| CN102758091A (en) * | 2012-07-18 | 2012-10-31 | 中国瑞林工程技术有限公司 | Treatment method for electroplating sludge |
Non-Patent Citations (1)
| Title |
|---|
| 张华: ""污泥中重金属的萃取及分离技术研究"", 《中国优秀硕士学位论文全文数据库（电子期刊）工程科技Ⅰ辑》 * |
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Granted publication date: 20160120 Termination date: 20161127 |