CN108456782A - The recycling piece-rate system and method for heavy metal in a kind of solid waste - Google Patents
The recycling piece-rate system and method for heavy metal in a kind of solid waste Download PDFInfo
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- CN108456782A CN108456782A CN201810504875.3A CN201810504875A CN108456782A CN 108456782 A CN108456782 A CN 108456782A CN 201810504875 A CN201810504875 A CN 201810504875A CN 108456782 A CN108456782 A CN 108456782A
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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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
-
- 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
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
- C22B13/045—Recovery from waste materials
-
- 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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with 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
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0084—Treating solutions
-
- 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
- C22B17/00—Obtaining cadmium
- C22B17/04—Obtaining cadmium by wet processes
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- 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)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention provides a kind of recycling piece-rate systems of heavy metal in solid waste, including sequentially connected leaching device, equipment for separating liquid from solid and extraction equipment, the extraction equipment includes multigroup by the concatenated single-stage extraction tower of third pipeline, and single-stage extraction tower has stripping column by the 4th pipeline and the 5th piping connection described in each group.Piece-rate system is recycled for recycling the heavy metals such as zinc, iron, cadmium, lead, copper in separation solid waste, it is cleverly used cooperatively by multitple extraction tower and stripping column, it has been separately separated out zinc, iron, copper and mixed cadmium and lead, simple operating conditions of the present invention, the exacting terms such as high temperature, high pressure, supercritical fluid are not needed, it is of low cost.
Description
Technical field
The present invention relates to resource and environment fileds, and in particular to the recycling piece-rate system of heavy metal and side in solid waste
Method.
Background technology
With industrialized development, industrial solid castoff increases, and causes the pollution of environment, and contains in solid waste
Some metals also result in the waste of resource.
Publication No. CN1485448, it is entitled using electric arc furnaces by the steel-making side of powdery trade waste recycling
Powdery industrial castoff fusing is then changed furnace conditions by the utility model patent of method using electric arc furnaces makes liquid steel water oxygen
Change reduction discharging, the method processing environment requires harshness, and processing cost is higher, and gained recycling product is various metals hybridization
Close object.
Publication No. CN107312942A, the invention of the method for extraction and separation vanadium and chromium in the entitled chromium slag pickle liquor from vanadium
A kind of method that patent provides extraction and separation vanadium and chromium in the chromium slag pickle liquor from vanadium.Publication No. CN106947864A is provided
A kind of system and its processing method recycling heavy metal from discarded SCR catalyst, at elution system, waste water
Reason system and useless solid processing system, wherein the liquid-phase outlet of elution system is connected with waste water treatment system, the solid phase of elution system
Outlet is connected with useless solid processing system.Discarded SCR catalyst removes surface dust accumulation through inventing the elution system, through useless solid processing
System recycles high purity vanadic anhydride and sodium platinate, realizes that vanadium, tungsten, platinum efficiently separate.Its technique waste water and elution waste water are through useless
Magnetic nanometer adsorbent enrichment in water treatment system greatly improves poisonous and harmful metal recovery recycling value in waste water, can
Recycle the metals such as arsenic, mercury, chromium, thallium in sewage.
But metal species contained in solid waste are various, wherein zinc, iron, chromium, lead, copper are also in solid waste
It is common containing metal, and the difference of metalline also results in the difference to recovery method and equipment requirement.
Invention content
It is an object of the present invention to overcome the defect of the above-mentioned prior art, heavy metal in a kind of solid waste is provided
Recycle piece-rate system and method.
To achieve the above object, the technical solution used in the present invention：
The recycling piece-rate system of heavy metal in a kind of solid waste, which is characterized in that filled including sequentially connected extraction
It sets, equipment for separating liquid from solid and extraction equipment, the extraction equipment includes multigroup by the concatenated single-stage extraction tower of third pipeline, respectively
The group single-stage extraction tower has stripping column by the 4th pipeline and the 5th piping connection；It is anti-by single-stage extraction tower and peer
The 4th pipeline connected between extraction tower and the 5th pipeline, the raffinate after extracting in extraction tower can enter back extraction at the same level
Tower, the raffinate after back extraction in stripping column can enter extraction tower at the same level, realize in extraction tower at the same level and stripping column
Between cycling extraction and back extraction, be conducive to isolating and purifying for object.
Further, the extraction equipment includes three groups of single-stage extraction towers.
Further, the equipment for separating liquid from solid is one in filter device, gravity settling device, centrifugal sedimentation device
Kind.
Further, the leaching device is made of container and blender, and blender connects motor, and motor passes through electronics control
Device control processed.
Further, the leaching device top connects charging line, for adding acid extract.
Further, the leaching device top connects feeding equipment, and feeding equipment is loading hopper.
Further, loading hopper is vibration-type loading hopper.
Further, the leaching device passes through the first piping connection, the equipment for separating liquid from solid with equipment for separating liquid from solid
Pass through the second piping connection with extraction equipment.
Further, first pipeline, the second pipeline, third pipeline, the 4th pipeline, be connected with promotion on the 5th pipeline
Pump is connected with valve and flowmeter, valve is used for for providing the power for transmitting material on the 4th pipeline, the 5th pipeline
Control piper being opened and closing, and the separation of extract liquor and raffinate is realized after extraction terminates or is stripped.
Further, the system also includes the fluid reservoir being connect with single-stage extraction tower by input duct, fluid reservoir is used
In to single-stage extraction tower add extractant.
Further, it is connected with flowmeter in the input duct.
The present invention also provides a kind of recycling separation methods of heavy metal in solid waste, which is characterized in that the side
Method includes the following steps：
S1：Solid waste is carried using acidleach, after extraction, extracting solution and waste residue are separated by solid-liquid separation；
S2：The extracting solution that step S1 is obtained is extracted with aldehydes organic reagent, after extraction, by extract liquor and raffinate point
From；
S3：The extract liquor that step S2 is obtained is extracted with organic reagent containing phosphine, after extraction, by extract liquor and raffinate point
From the raffinate for obtaining step S2 is stripped with acid mineral reagent, and the inorganic phase extract liquor after back extraction is rich in copper
Polymer solution；
S4：The extract liquor being obtained by extraction in step S3 is extracted with pure water, after extraction, extract liquor and raffinate are detached,
Extract liquor is zinc compound solution, the neutral inorganic reagent of the raffinate being obtained by extraction in step S3 is stripped, back extraction
Obtained inorganic phase extract liquor is the mixed solution rich in cadmium, lead compound；
S5：By the raffinate being obtained by extraction in step S4 with acid mineral reagent be stripped, be stripped be rich in
The compound solution of iron.
Further, the aldehydes organic reagent that the step S2 extractions use is 5- salicylaldoximes.
Further, the organic reagent containing phosphine that step S3 extraction uses be trialkyl phosphine oxides (Cyanex923),
Bis- (2,4,4- tri-methyl-amyls) phosphonic acids (Cyanex 272), mixing organic phospho acid (Cyanex 572).
Further, the acid mineral reagent that step S3 back extraction, step S5 back extraction use be sulfuric acid, hydrochloric acid,
At least one of nitric acid.
Further, be stripped in the step S4 the neutral inorganic reagent that uses be in potassium chloride, sodium sulphate at least
It is a kind of.
Further, the waste residue being separated by solid-liquid separation in the step S1 is carried by multiple acidleach.
Further, step S3 is extracted through being stripped obtained raffinate through step S2 again.
Further, step S4 is extracted through being stripped obtained raffinate through step S3 again.
Further, step S5 is extracted through being stripped obtained raffinate through step S4 again.
The beneficial effects of the present invention are：
Provide the recycling separator and method of heavy metal in a kind of solid waste.Multitple extraction tower and stripping column
It is cleverly used cooperatively, has been separately separated out zinc, iron, copper and mixed cadmium and lead, simple operating conditions of the present invention and has not needed height
The exacting terms such as temperature, high pressure, supercritical fluid, it is of low cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the recycling piece-rate system of heavy metal in 1 solid waste of embodiment.
Specific implementation mode
The present invention is specifically described with reference to embodiment, but not limited to this.
Embodiment 1
As shown in Figure 1, leaching device 1 is made of container tank and blender, blender connects motor, and motor passes through electronics control
Device control processed.1 top of leaching device is connected with vibration-type loading hopper (not marked in figure) for adding solid waste, container
Tank top connects charging line, the acid solution used for adding extraction.
Leaching device 1 by the first piping connection filter device 2, filter device 2 by the second piping connection extraction equipment,
Extraction equipment includes the single-stage extraction tower of thtee-stage shiplock, and the single-stage extraction towers at different levels are respectively connected with stripping column.Wherein, level-one
Extraction tower 3, two level extraction tower 4, three-level extraction tower 5 are sequentially connected by third pipeline.
Level-one extraction tower 3 is by the 4th pipeline and the 5th piping connection level-one stripping column 6, in level-one extraction tower 3 and one
Between grade stripping column 6 the 4th pipeline that connects and the 5th pipeline be respectively used to from level-one extraction tower 3 to level-one stripping column 6,
Transmit material in opposite directions from level-one stripping column 6 to level-one extraction tower 3.
Two level extraction tower 4 is by the 4th pipeline and the 5th piping connection two level stripping column 7, in two level extraction tower 4 and two
Between grade stripping column 7 the 4th pipeline that connects and the 5th pipeline be respectively used to from two level extraction tower 4 to two level stripping column 7,
Transmit material in opposite directions from two level stripping column 7 to two level extraction tower 4.
Three-level extraction tower 5 is by the 4th pipeline and the 5th piping connection three-level stripping column 8, in three-level extraction tower 5 and three
Between grade stripping column 8 the 4th pipeline that connects and the 5th pipeline be respectively used to from three-level extraction tower 5 to three-level stripping column 8,
Transmit material in opposite directions from three-level stripping column 8 to three-level extraction tower 5.
Level-one extract liquor holding vessel 9 is connect with level-one extraction tower 3, and two level extract liquor holding vessel 10 and two level extraction tower 4 are logical
Input duct connection is crossed, for adding extract liquor to extraction tower, flowmeter is connected in input duct.
Level-one stripping column 6, two level stripping column 7, three-level stripping column 8 are connected with input duct, for adding back extraction
Take required strippant.
First pipeline, third pipeline, the 4th pipeline, is connected with elevator pump on the 5th pipeline at the second pipeline, for providing biography
The power of defeated material.
Valve and flowmeter are connected on 4th pipeline, the 5th pipeline, valve being opened and closing for control piper,
Extraction terminates or is realized after being stripped the separation of extract liquor and raffinate.
Embodiment 2
Recycling separation copper, cadmium, lead, zinc and iron etc. from the industrial solid castoff based on flying dust, flyash and red mud
The method of metal.
Sour leach step：By based on flying dust, flyash and red mud etc. powdery trade waste and hydrochloric acid add in proportion
Enter acidleach device 1, stirs.
Solid-liquid separation step：Supernatant liquid after extraction is inputted into filter device 2 by pipeline, is detached through filter device 2
Afterwards, gained filtrate is added by elevator pump pipeline in level-one extraction tower 3, filter residue is thrown to acidleach device 1 again.
Level-one extracts：5- salicylaldoximes are added to level-one extraction tower 3 by level-one extract liquor holding vessel 9, after extraction, extract
Two level extraction tower 4 is added by elevator pump pipeline in extract liquor by liquid and raffinate separation, and it is anti-that raffinate by pipeline enters level-one
Extraction tower 6.Level-one extracts in triplicate.
Level-one is stripped：Dust technology is added to level-one stripping column 6, raffinate obtained by level-one extraction step is stripped
It takes, after back extraction, extract liquor and raffinate separation, the organic phase raffinate being stripped enter level-one extraction tower 3.Repeat one
Twice, the extract liquor being stripped is rich in copper compound solution for grade back extraction.
Two level extracts：923 extractants of Cyanex, extraction is added to two level extraction tower 4 by two level extract liquor holding vessel 10
Afterwards, extract liquor and raffinate separation, extraction gained extract liquor enter three-level extraction tower 5 by elevator pump pipeline, and raffinate passes through
Pipeline enters two level stripping column 7.Two level extracts in triplicate.
Two level is stripped：It is stripped in tower 7 to two level and Klorvess Liquid is added, extracting gained raffinate to two level is stripped
It takes, after back extraction, extract liquor and raffinate separation, organic phase raffinate enter two level extraction tower 4.Repeat two level back extraction three
Secondary, the extract liquor being stripped is rich in cadmium, lead mixed compound solution.
Three-level extracts：Pure water is added to three-level extraction tower 5, after extraction, extract liquor and raffinate separation, raffinate pass through pipe
Road enters three-level stripping column 8.The extract liquor of three-level extraction arrived is rich in zinc compound solution in triplicate.
Three-level is stripped：Dust technology is added to three-level extraction tower 8 to be stripped three-level extraction gained raffinate, repeats
Back extraction can obtain be rich in iron compound solution three times.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention rather than is protected to the present invention
The limitation of range is protected, although being explained in detail to the present invention with reference to preferred embodiment, those skilled in the art should
Understand, technical scheme of the present invention can be modified or replaced equivalently, without departing from the essence of technical solution of the present invention
And range.
Claims (10)
1. the recycling piece-rate system of heavy metal in a kind of solid waste, which is characterized in that including sequentially connected leaching device,
Equipment for separating liquid from solid and extraction equipment, the extraction equipment include multigroup by the concatenated single-stage extraction tower of third pipeline, each group
The single-stage extraction tower has stripping column by the 4th pipeline and the 5th piping connection.
2. recycling piece-rate system according to claim 1, which is characterized in that the extraction equipment includes three groups of single-stage extractions
Tower.
3. recycling piece-rate system according to claim 1 or 2, which is characterized in that the equipment for separating liquid from solid is that filtering fills
It sets, one kind in gravity settling device, centrifugal sedimentation device.
4. recycling piece-rate system according to claim 1 or 2, which is characterized in that the leaching device is by container and stirring
Device forms, and blender connects motor, and motor is controlled by electronic controller.
5. recycling piece-rate system according to claim 1 or 2, which is characterized in that the leaching device is filled with separation of solid and liquid
It sets through the first piping connection, the equipment for separating liquid from solid passes through the second piping connection with extraction equipment.
6. recycling piece-rate system according to claim 5, which is characterized in that first pipeline, the second pipeline, third pipe
Road, the 4th pipeline are connected with elevator pump on the 5th pipeline, and valve and flowmeter are connected on the 4th pipeline, the 5th pipeline.
7. recycling piece-rate system according to claim 5, which is characterized in that the system also includes by input duct with
The fluid reservoir of single-stage extraction tower connection.
8. recycling piece-rate system according to claim 7, which is characterized in that be connected with flowmeter in the input duct.
9. the recycling separation method of heavy metal in a kind of solid waste, which is characterized in that the described method comprises the following steps：
S1：Solid waste is carried using acidleach, after extraction, extracting solution and waste residue are separated by solid-liquid separation；
S2：The extracting solution that step S1 is obtained is extracted with aldehydes organic reagent, and after extraction, extract liquor and raffinate are detached；
S3：The extract liquor that step S2 is obtained is extracted with organic reagent containing phosphine, and after extraction, extract liquor and raffinate are detached, will
The raffinate that step S2 is obtained is stripped with acid mineral reagent；
S4：The extract liquor being obtained by extraction in step S3 is extracted with pure water, after extraction, extract liquor and raffinate is detached, will be walked
The raffinate being obtained by extraction in rapid S3 is stripped with neutral inorganic reagent；
S5：The raffinate being obtained by extraction in step S4 acid mineral reagent is stripped.
10. recycling separation method according to claim 9, which is characterized in that in the step S2, aldehydes organic reagent is
5- salicylaldoximes, the organic reagent containing phosphine in the step S3 be in Cyanex 923, Cyanex 272, Cyanex 572 extremely
Few one kind, the step S3 are stripped, in step S5, and acid mineral reagent is at least one of sulfuric acid, hydrochloric acid, nitric acid, institute
It states in step S4, neutral inorganic reagent is at least one of potassium chloride, sodium sulphate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810504875.3A CN108456782A (en) | 2018-05-23 | 2018-05-23 | The recycling piece-rate system and method for heavy metal in a kind of solid waste |
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| CN201810504875.3A CN108456782A (en) | 2018-05-23 | 2018-05-23 | The recycling piece-rate system and method for heavy metal in a kind of solid waste |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618066A (en) * | 2020-01-16 | 2020-09-04 | 李晓清 | Calcium oxide production device and process in waste incineration fly ash |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5135652A (en) * | 1990-10-25 | 1992-08-04 | Cominco Ltd. | Method for the solvent extraction of zinc |
| CN203916144U (en) * | 2014-06-09 | 2014-11-05 | 吉首大学 | A kind of continuous automatic solvent extract and separate enrichment facility |
| CN106947864A (en) * | 2016-01-07 | 2017-07-14 | 中国科学院过程工程研究所 | A kind of system and its processing method that heavy metal is reclaimed from discarded SCR catalyst |
| CN208218927U (en) * | 2018-05-23 | 2018-12-11 | 广州大学 | The recycling separation system of heavy metal in a kind of solid waste |
-
2018
- 2018-05-23 CN CN201810504875.3A patent/CN108456782A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5135652A (en) * | 1990-10-25 | 1992-08-04 | Cominco Ltd. | Method for the solvent extraction of zinc |
| CN203916144U (en) * | 2014-06-09 | 2014-11-05 | 吉首大学 | A kind of continuous automatic solvent extract and separate enrichment facility |
| CN106947864A (en) * | 2016-01-07 | 2017-07-14 | 中国科学院过程工程研究所 | A kind of system and its processing method that heavy metal is reclaimed from discarded SCR catalyst |
| CN208218927U (en) * | 2018-05-23 | 2018-12-11 | 广州大学 | The recycling separation system of heavy metal in a kind of solid waste |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111618066A (en) * | 2020-01-16 | 2020-09-04 | 李晓清 | Calcium oxide production device and process in waste incineration fly ash |
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