CN108315555A - A kind of processing method of nickeliferous and iron aqueous solution - Google Patents
A kind of processing method of nickeliferous and iron aqueous solution Download PDFInfo
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- CN108315555A CN108315555A CN201810046067.7A CN201810046067A CN108315555A CN 108315555 A CN108315555 A CN 108315555A CN 201810046067 A CN201810046067 A CN 201810046067A CN 108315555 A CN108315555 A CN 108315555A
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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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
- C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
- C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
- C22B3/384—Pentavalent phosphorus oxyacids, esters thereof
- C22B3/3846—Phosphoric acid, e.g. (O)P(OH)3
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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
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0453—Treatment or purification of solutions, e.g. obtained by leaching
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Abstract
The invention discloses the processing methods of a kind of nickeliferous and iron aqueous solution.The processing method, includes the following steps：Nickeliferous and iron aqueous solution is subjected to fractional extraction, wherein extraction phase is the extracts composition after saponification, and the extracts composition includes diluent and extractant two (2 ethylhexyl) phosphinic acids；Detergent is the aqueous solution of a concentration of 0mol/L~0.1mol/L inorganic acids；It obtains containing Ni2+Raffinate phase and load Fe3+Organic phase, you can.The method of the present invention can effectively extract nickeliferous and iron aqueous solution, isolated high content iron, and such as Cu, Co, Ni loss of other valuable metals is few；Organic phase can be recycled, and reduce production cost.
Description
Technical field
The present invention relates to the processing methods of a kind of nickeliferous and iron aqueous solution.
Background technology
The industrial method except iron mainly has the precipitation method, extraction and ion-exchange.The precipitation method are only applicable to relatively low iron
Under the conditions of content and Low acid.Although ion-exchange has good physicochemical property, to environment non-secondary pollution, exist
The problem of capacity is low, and the cost is relatively high is not appropriate for the separation of a large amount of iron ions.Extraction has higher selection except iron
Property, while the loss of valuable metal can be reduced, low energy consumption, pollution is small, easy to operate, and high-purity iron product can be obtained.Therefore molten
Agent extraction has received widespread attention except iron.The extraction and separation technology of low content iron has commercial Application at present, but contains to height
The extraction and separation of amount iron still remain larger difficulty.
Can be used for extracting from solution except the extractant of iron include amine, neutral Phosphorus, acid phosphorus (phosphine) class, carboxylic acids,
The extractants such as amides and ketone.Wherein amine and acid phosphorus (phosphine) class is widely used in rare earth, aluminium, in the hydrometallurgys such as zinc
The extraction of Low Concentration Iron.Common amine extractant has N1923, N235 etc., N1923 to extract iron and be easy the most, but is stripped acidity
It is higher.N235 has many advantages, such as that selective excellent, valuable metal loses small and easy back extraction, but split-phase is difficult after its extraction, is easy
Form three-phase, it is difficult to realize continuous production.And acid phosphorus (phosphine) kind of extractants P204, P507 etc., their effect of extracting to iron
Preferably, but there is a problem of back extraction difficulty, that is, use the multistage back extraction of the acid of high concentration, iron can not be stripped completely.In addition,
Above-mentioned extractant has that the saturated capacity of iron is low.Although being the Neutral-neutral Extractants of representative in Gao Cui using TBP and MIBK
It takes and has both preferable effect of extracting and saturated capacity under agent concentration, but due to higher corrosivity and toxicity, all not having
Extraction applied to high concentration iron.
In addition, from high Fe content solution extraction except during iron, be inevitably present in extract liquor it is other not
Want to go to the nickel in the metal ion removed, such as nickel matte leachate；Therefore directly it is stripped the defect for the loss that can cause valuable metal.
Invention content
The technical problem to be solved by the present invention is to be removed to overcome to extract in the existing nickel matte leachate from high Fe content
The defects of back extraction is difficult, acid and alkali consumption is big when the valuable metal loss of the method for iron is big and recycles organic phase, and provide one kind
The processing method of nickeliferous and iron aqueous solution.This method is simple for process, can effectively recycle valuable metal, so be stripped obtain it is high-purity
The Fe of degree3+, efficient to recycle, at low cost, easy to use, environmental-friendly, potential realization industrial applications.
The present invention provides the processing methods of a kind of nickeliferous and iron aqueous solution comprising the following steps：
Nickeliferous and iron aqueous solution is subjected to fractional extraction, wherein extraction phase is the extracts composition after saponification, described
Extracts composition includes diluent and extractant two (2- ethylhexyls) phosphinic acids；Detergent be containing a concentration of 0mol/L~
The aqueous solution of 0.1mol/L inorganic acids；It obtains containing Ni2+Raffinate phase and load Fe3+Organic phase, you can.
Wherein, the operating method of the fractional extraction can be the operating method of this field routine, for example, in extraction section
In, with the extracts composition after the saponification by the Fe in the aqueous solution of the nickeliferous and iron3+It is extracted into the extraction
Xiang Zhong obtains basic load Fe3+Extraction phase and Fe3+Contain Ni after being extracted2+Raffinate phase；In washing section, the master
Load Fe3+The washing of washed dose of extraction phase, obtain mainly containing Ni2+Washing phase and load Fe3+Organic phase；Described
Containing Ni2+Washing mutually merge with nickeliferous and iron aqueous solution continuation fractional extraction.
In the aqueous solution of the nickeliferous and iron, Fe3+Concentration can be this field routine concentration, such as 5g/L~80g/
L, preferably 10g/L~75g/L (in another example 10.08g/L, 49.52g/L or 72.36g/L).
In the aqueous solution of the nickeliferous and iron, Ni2+Concentration can be this field routine concentration, for example, 5g/L~
80g/L (in another example 49.52g/L, 54.68g/L or 68.90g/L).
In the aqueous solution of the nickeliferous and iron, preferably, the Ni2+With Fe3+Mass ratio be 1:2~6:1 (such as
1:1、1.5:1、5.5:1)。
In the aqueous solution of the nickeliferous and iron, preferably, the Ni2+And Fe3+Account for the aqueous solution of the nickeliferous and iron
In total metal ion content be 95% or more；In the aqueous solution of the nickeliferous and iron, metal ion also may include Co2+、
Zn2+、Mn2+、Mg2+、Cu2+、Ca2+、Cd2+、Re3+(Re refers to rare earth), Cr2+、Cr3+、VO2+、VO2 +、Ti4+、SO4 2-、NO3 -And Cl-In
It is one or more.For example, the aqueous solution of the nickeliferous and iron is by the Fe3+、Ni2+、Co2+、Zn2+、Mn2+、Mg2+、Cu2 +、Ca2+、SO4 2-、NO3 -And Cl-Composition；The aqueous solution of the nickeliferous and iron is by the Fe3+、Ni2+With the SO4 2-Group
At；The aqueous solution of the nickeliferous and iron is by the Fe3+、Ni2+With the NO3 -Composition；Alternatively, the nickeliferous and iron
Aqueous solution by the Fe3+、Ni2+With the Cl-Composition.
The pH value of the aqueous solution of the nickeliferous and iron can be that this field is conventional, be, for example, less than equal to 2.5 (in another example
0.4,1.2,1.5,1.9,2.0,2.1,2.2 or 2.3).
The aqueous solution of the nickeliferous and iron can be the source of this field routine, such as nickel matte leachate is (in another example Jinchuan
Nickel matte leachate).
Volume content of the extractant in the extracts composition can be normal in such method for removing iron of this field
Rule, such as 15%~50% (in another example 30%).
The method and condition of the saponification can be the method and condition of this field routine, for example, by using alkali to the extraction
Composition is taken to carry out saponification, it is one or more in the preferred sodium hydrate aqueous solution of the alkali, ammonium hydroxide or ammonia；Described
The molar concentration of sodium hydrate aqueous solution can be 10mol/L~13mol/L；The ammonium hydroxide can be the water containing ammonia 25%~28%
Solution, the percentage refer to that the quality of ammonia accounts for the percentage of ammonium hydroxide gross mass.The dosage of the alkali generally can be according to institute
In extracts composition after the saponification stated, the saponification rate of the extractant determines.
The diluent can be the diluent of this field routine, such as kerosene, solvent naphtha, hexane, heptane and dodecane
In it is one or more.The solvent naphtha can be the solvent naphtha of solvent extraction field routine, for example, No. 200 solvent naphthas with/
Or No. 260 solvent naphthas (i.e. sulfonated kerosene).The dodecane can be n-dodecane.The solvent naphtha does not include kerosene coal
Oil, hexane, heptane and dodecane.
In the extraction section, the extraction series of the extracts composition and nickeliferous and iron the aqueous solution can
It is determined according to extraction parameters etc. by those skilled in the art, such as 1~10 grade (in another example 4 grades).In the final raffinate phase,
Fe3+It is a concentration of<0.1g/L (such as 0.03g/L, 0.06g/L or 0.09g/L).
The extraction parameters refer to the concentration of extractant in extracts composition, Fe in nickeliferous and iron aqueous solution3+It is dense
The stream ratio etc. of degree, extracts composition and nickeliferous and iron aqueous solution.
The stream ratio of the extracts composition and nickeliferous and iron the aqueous solution can be fractional extraction except iron field is normal
The stream ratio of rule, such as 1:10~10:1 (in another example 2:1).
The solution equilibria pH value of the raffinate phase can be 1.2~2.4 (such as 1.2,1.8 or 2.4).
In the extraction phase, Ni2+Concentration preferably be less than 0.05g/L (such as 0.03g/L, 0.04g/L).
In the detergent, the inorganic acid can be the inorganic acid that iron ion extracts field routine, preferably nitric acid, salt
It is one or more in acid and sulfuric acid.
The inorganic acid concentration preferably 0~0.05mol/L.
The dosage of the inorganic acid can be the dosage that iron extracts field routine, example inorganic acid as mentioned and the extraction
It is 1 to take the volume ratio of phase:1~3:1.
Stream ratio of the extraction phase with the stream of the detergent than field routine can be extracted for iron, such as 1:5~5:1
(in another example 1:0.6).
The washing series of the extraction phase and the detergent can be by those skilled in the art according to washing parameter etc.
It determines, such as 1~3 grade (such as 2 grades).The detergent is by Ni2+And other ion-cleanings are to water phase, finally obtained Fe3+
In load organic phases, Ni2+A concentration of≤0.1g/L (such as 0g/L, 0.03g/L or 0.1g/L).Nickel direct yield can be>99%
(in another example 99.85%, 99.95% or 100%).
The washing parameter refers to Fe in extraction phase3+Concentration, in detergent inorganic acid concentration, extraction phase and washing
Stream ratio of agent etc..
In the processing method of described nickeliferous and iron aqueous solution, it may also include following pre-treatment step：When nickeliferous and iron
Also contain Fe in pending liquid2+When, before extraction, oxidant is added, by Fe2+All it is oxidized to Fe3+, obtain described nickeliferous
With the aqueous solution of iron.
The oxidant can be the oxidant of this field routine, such as hydrogen peroxide.The dosage of the oxidant can not be done
It is particularly limited to, so that Fe2+All it is oxidized to Fe3+.
In the processing method of described nickeliferous and iron aqueous solution, it may also include the steps of：Organic phase after washing carries out
Back extraction is handled.The back extraction processing can be that the back extraction of this field routine is handled, following step specifically preferred according to the invention：By acid
Aqueous solution and the load Fe after the washing3+It is organic be in contact, obtain load Fe3+Acid aqueous solution and blank it is organic
Phase.
In the back extraction processing, the acid can be the acid of this field routine, such as inorganic acid；The inorganic acid can
It is one or more in the inorganic acid of this field routine, such as nitric acid, hydrochloric acid and sulfuric acid.
In the back extraction processing, in the aqueous solution of the acid, H+Concentration can be solvent extraction except iron field it is normal
The H of rule+Concentration, such as 1mol/L~3mol/L (in another example 2mol/L).
In the back extraction processing, aqueous solution and the load Fe of the acid3+The volume ratio of organic phase can
For the volume ratio of this field routine, such as 1:1~3:1 (in another example 2:1).
In the stripping steps, aqueous solution and the load Fe of the acid3+Organic phase back extraction grade
Number can be 1~6 grade (such as 4 grades).
In the back extraction processing, the load Fe3+Acid aqueous solution can be used for preparing iron-containing product.
In the back extraction processing, the blank organic phase can be used as extracts composition for the nickeliferous and iron
Aqueous solution processing method, namely return extraction process recycle.
In the processing method of the aqueous solution of the nickeliferous and iron, next stage process can be entered by removing the feed liquid of iron, and electricity is heavy
Product obtains the products such as nickel, copper and cobalt.
Term " direct yield " is generally used for chemistry and industrial production, refers in chemical reaction or the life of relevant chemical industry
In production, the ratio of the product yield of the actual production of input unit's quantity raw material acquisition and the product yield of theoretical calculation.
Term " nickel direct yield " refers to finally obtained nickel yield with theoretical calculation nickel yield (assuming that nickel is complete in technical process
Do not lose, yield values are consistent with the content of nickel in raw material herein) ratio.
Without prejudice to the field on the basis of common sense, above-mentioned each optimum condition can be combined arbitrarily each preferably to get the present invention
Example.
The reagents and materials used in the present invention are commercially available.
The positive effect of the present invention is that：The method of the present invention can effectively extract nickeliferous and iron aqueous solution
It takes, isolated high content iron, and such as Cu, Co, Ni loss of other valuable metals is few；Organic phase can be recycled, and reduce production
Cost.
Specific implementation mode
It is further illustrated the present invention below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.In the following examples, the experimental methods for specific conditions are not specified, according to conventional methods and conditions, or according to quotient
Product specification selects.
Embodiment 1
Jinchuan nickel matte leachate composition analysis is shown in Table 1.
1 Jinchuan nickel matte leachate main constituents analysis of table
| Element | Ni | Fe | Co | Zn | Ca | Mg | Cu | Mn |
| Content g/L | 73.60 | 49.52 | 0.89 | 0.33 | 0.41 | 0.19 | 0.27 | 0.04 |
Step (1), using 85% H2O2By the Fe in leachate2+All it is oxidized to Fe3+。
Step (2), using n-dodecane as diluent, it is 50% to be diluted to extractant concentration；Extractant is used
13mol/L NaOH solutions carry out homogeneous saponification, until the saponification rate of extractant P227 is 50%.
Step (3), it is 2 that the stream of extracts composition and nickel matte leachate, which compares, in extraction section:1, extraction series is 4 grades, is obtained
Extraction phase, solution equilibria pH is 2.4 after extraction；Ni in extraction phase2+Content is 0.04g/L.
Washing section is washed with dilute HCl of a concentration of 0.05M, and extraction phase is 1 with detergent stream ratio:0.6, wash series
It it is 1 grade, Fe contents are 0.03g/L in final raffinate phase, and Ni contents are 0 in organic phase, and nickel direct yield is 100%.
Step (4), Fe elements are stripped using the HCl solution of a concentration of 3mol/L in organic phase, acid solution with have
The volume ratio of machine phase is 2:1, back extraction series is 4 grades.Organic phase after back extraction can return to extraction process recycling, be stripped
To iron content water phase be further processed iron oxide can be prepared；The feed liquid of removal iron enters next stage process, and electro-deposition obtains
Nickel.
Embodiment 2
Jinchuan nickel matte leachate composition analysis is shown in Table 2.
2 Jinchuan nickel matte leachate main constituents analysis of table
Step (1), using 35% H2O2By the Fe in leachate2+All it is oxidized to Fe3+。
Step (2), using sulfonated kerosene as diluent, it is 15% to be diluted to extractant concentration；To extractant using dense
Degree carries out homogeneous saponification for 28% ammonium hydroxide, until the saponification rate of extractant P227 is 30%.
Step (3), it is 1 that the stream of extracts composition and nickel matte leachate, which compares, in extraction section:10, extraction series is 10 grades, is obtained
To extraction phase, solution equilibria pH is 2.0 after extraction, Ni in extraction phase2+Content is 0.03g/L；Washing section is with a concentration of 0M's of HCl
Detergent (water phase for being free of HCl) is washed, and extraction phase is 5 with detergent stream ratio:1, washing series is 3 grades, final to extract
Fe contents are 0.06g/L in remaining phase, and Ni contents are 0.03g/L in organic phase, and nickel direct yield is 99.95%；
Step (4), Fe elements are stripped using the HCl solution of a concentration of 1mol/L in organic phase, acid solution with have
The volume ratio of machine phase is 3:1, back extraction series is that the organic phase after 1 grade of back extraction can return to extraction process recycling, is stripped
To iron content water phase be further processed iron oxide can be prepared；The feed liquid of removal iron enters next stage process, and electro-deposition obtains
Nickel.
Embodiment 3
Jinchuan nickel matte leachate composition analysis is shown in Table 3.
3 Jinchuan nickel matte leachate main constituents analysis of table
| Element | Ni | Fe | Co | Zn | Ca | Mg | Cu | Mn |
| Content g/L | 68.90 | 72.36 | 0.99 | 0.85 | 0.21 | 0.16 | 0.24 | 0.06 |
Step (1), using 35% H2O2By the Fe in leachate2+All it is oxidized to Fe3+。
Step (2), using solvent naphtha as diluent, it is 50% to be diluted to extractant concentration；28% is used to extractant
Ammonium hydroxide carry out homogeneous saponification, until the saponification rate of extractant P227 is 70%.
Step (3), it is 10 that the stream of extracts composition and nickel matte leachate, which compares, in extraction section:1, extraction series is 1 grade, is obtained
Extraction phase, solution equilibria pH is 1.2 after extraction, Ni in extraction phase2+Content is 0.04g/L,；Washing section is dilute with a concentration of 0.1M
HCl is washed, and extraction phase is 1 with detergent stream ratio:5, washing series is 2 grades, and Fe contents are 0.09g/ in final raffinate phase
L, Ni contents are 0.1g/L in organic phase, and nickel direct yield is 99.85%；
Step (4), Fe elements are stripped using the HCl solution of a concentration of 2mol/L in organic phase, acid solution with have
The volume ratio of machine phase is 1:1, back extraction series is that the organic phase after 6 grades of back extraction can return to extraction process recycling, is stripped
To iron content water phase be further processed iron oxide can be prepared；The feed liquid of removal iron enters next stage process, and electro-deposition obtains
Nickel.
Comparative example 1
Influences of the solution equilibria pH to Fe removal rates after extraction：
Using Jinchuan nickel matte leachate is extracted object in embodiment 1, using 35% H2O2By the Fe in leachate2+All
It is oxidized to Fe3+；Using n-dodecane as diluent, it is 30% to be diluted to extractant concentration；13mol/L is used to extractant
NaOH solution carries out homogeneous saponification, and different raffinates balance each other pH in order to obtain, the multiple saponification of use, by extractant P227 saponification
To different degrees of.
It is 2 that the stream of extracts composition and nickel matte leachate, which compares, in extraction section:1, extraction series is 4 grades, obtains extraction phase, is extracted
When rear solution equilibria pH being taken to be respectively 0.78,1.06 and 1.14, Fe contents are respectively 0.69g/L, 0.38g/L and 0.18g/L.It reaches
Fe contents in raffinate phase are not made to be reduced to 0.1g/L technological standards below to the end.
Comparative example 2
Using Jinchuan nickel matte leachate is extracted object in embodiment 1, using 35% H2O2By the Fe in leachate2+All
It is oxidized to Fe3+；Using kerosene as diluent, it is 45% to be diluted to extractant concentration；13mol/L NaOH are used to extractant
Solution carries out homogeneous saponification, and loading Fe contents by extractant P227 saponification to 50%, after carrying out single extraction, in organic phase is
37.52g/L, load Ni are 0.034g/L.It is respectively 0M, 0.05M, 0.1M using concentration, dilute HCl of 0.2M, 0.5M are to load
Organic phase is washed, the Fe after washing in cleaning solution, and Ni contents are as follows：
After the cleaning solution washing of 3 different acidity of table, the Fe in cleaning solution, Ni contents
As seen from the above table, after washing liquid acidity is excessively high, Fe in organic phase3+It is largely washed, has been seriously affected
Fe in machine phase3+Load capacity, reduce extraction efficiency.
Claims (10)
1. the processing method of a kind of nickeliferous and iron aqueous solution, which is characterized in that include the following steps：It will be nickeliferous and iron water-soluble
Liquid carries out fractional extraction, wherein extraction phase is the extracts composition after saponification, and the extracts composition includes diluent and extraction
Take agent two (2- ethylhexyls) phosphinic acids；Detergent is the aqueous solution of a concentration of 0mol/L~0.1mol/L inorganic acids；Contained
Ni2+Raffinate phase and load Fe3+Organic phase, you can.
2. processing method as described in claim 1, which is characterized in that in the aqueous solution of the nickeliferous and iron, Fe3+Concentration
For 5g/L~80g/L；
And/or in the aqueous solution of the nickeliferous and iron, Ni2+A concentration of 5g/L~80g/L；
And/or in the aqueous solution of the nickeliferous and iron, the Ni2+With Fe3+Mass ratio be 1:2~6:1；
And/or in the aqueous solution of the nickeliferous and iron, the Ni2+And Fe3+In the aqueous solution of nickeliferous and iron described in accounting for always
The content of metal ion is 95% or more；
And/or in the aqueous solution of the nickeliferous and iron, including Co2+、Zn2+、Mn2+、Mg2+、Cu2+、Ca2+、Cd2+、Re3+、Cr2 +、Cr3+、VO2+、VO2 +、Ti4+、SO4 2-、NO3 -And Cl-In it is one or more；
And/or the pH value of the aqueous solution of the nickeliferous and iron is less than or equal to 2.5；
And/or the aqueous solution of the nickeliferous and iron is nickel matte leachate；
And/or volume content of the extractant in the extracts composition is 15%~50%；
And/or the method for the saponification is to carry out saponification to the extracts composition using alkali；
And/or the diluent is one or more in kerosene, solvent naphtha, hexane, heptane and dodecane.
3. processing method as claimed in claim 2, which is characterized in that in the aqueous solution of the nickeliferous and iron, Fe3+Concentration
For 10g/L~75g/L；
And/or in the aqueous solution of the nickeliferous and iron, Ni2+A concentration of 49.52g/L, 54.68g/L or 68.90g/L；
And/or the aqueous solution of the nickeliferous and iron is by the Fe3+、Ni2+、Co2+、Zn2+、Mn2+、Mg2+、Cu2+、Ca2+、
SO4 2-、NO3 -And Cl-Composition；The aqueous solution of the nickeliferous and iron is by the Fe3+、Ni2+With the SO4 2-Composition；It is described
Nickeliferous and iron aqueous solution by the Fe3+、Ni2+With the NO3 -Composition；Alternatively, the aqueous solution of the nickeliferous and iron
By the Fe3+、Ni2+With the Cl-Composition；
And/or volume content of the extractant in the extracts composition is 30%；
And/or the alkali of the saponification is one or more in sodium hydrate aqueous solution, ammonium hydroxide or ammonia.
4. processing method as claimed in claim 3, which is characterized in that in the saponification, the sodium hydroxide is water-soluble
The molar concentration of liquid is 10mol/L~13mol/L；
And/or in the saponification, the ammonium hydroxide is the aqueous solution containing ammonia 25%~28%, and the percentage refers to ammonia
Quality account for the percentage of ammonium hydroxide gross mass；
And/or in the diluent, the solvent naphtha is No. 200 solvent naphthas and/or No. 260 solvent naphthas；
And/or in the diluent, the dodecane is n-dodecane；
And/or in the detergent, the inorganic acid is one or more in nitric acid, hydrochloric acid and sulfuric acid.
5. such as Claims 1 to 4 any one of them processing method, which is characterized in that the extracts composition with it is described
The extraction series of nickeliferous and iron aqueous solution is 1~10 grade；
And/or it is 1 that the stream of the extracts composition and nickeliferous and iron the aqueous solution, which compares,:10~10:1；
And/or the solution equilibria pH value of the raffinate phase is 1.2~2.4；
And/or in the extraction phase, Ni2+It is a concentration of be less than 0.05g/L；
And/or in the detergent, the inorganic acid concentration is 0~0.05mol/L；
And/or in the detergent, the volume ratio of the inorganic acid and the extraction phase is 1:1~3:1；
And/or it is 1 that the stream of the extraction phase and the detergent, which compares,:5~5:1；
And/or the washing series of the extraction phase and the detergent is 1~3 grade.
6. processing method as claimed in claim 5, which is characterized in that the extracts composition with it is described nickeliferous and iron
The extraction series of aqueous solution is 4 grades；
And/or it is 2 that the stream of the extracts composition and nickeliferous and iron the aqueous solution, which compares,:1；
And/or the solution equilibria pH value of the raffinate phase is 1.8；
And/or it is 1 that the stream of the extraction phase and the detergent, which compares,:0.6；
And/or the washing series of the extraction phase and the detergent is 2 grades.
7. such as Claims 1 to 4 any one of them processing method, which is characterized in that the place of described nickeliferous and iron aqueous solution
Further include following pre-treatment step in reason method：When also containing Fe in the pending liquid of nickeliferous and iron2+When, before extraction, it is added
Oxidant, by Fe2+All it is oxidized to Fe3+, obtain the aqueous solution of the nickeliferous and iron；
And/or further include following steps in the processing method of described nickeliferous and iron aqueous solution：Organic phase after washing carries out
Back extraction is handled.
8. processing method as claimed in claim 7, which is characterized in that in the pretreatment, the oxidant is dioxygen
Water；
And/or the step of back extraction processing, is：By the aqueous solution of acid and the load Fe after the washing3+Organic connect
It touches, obtains load Fe3+Acid aqueous solution and blank organic phase.
9. processing method as claimed in claim 8, which is characterized in that in the back extraction processing, the acid is inorganic acid；
And/or in the back extraction processing, in the aqueous solution of the acid, H+A concentration of 1mol/L~3mol/L；
And/or in the back extraction processing, the volume ratio of the aqueous solution of the acid and the organic phase of the load Fe3+
It is 1:1~3:1；
And/or in the stripping steps, aqueous solution and the load Fe of the acid3+Organic phase back extraction
Series is 1~6 grade.
10. processing method as claimed in claim 9, which is characterized in that in the described back extraction processing, the acid be nitric acid,
It is one or more in hydrochloric acid and sulfuric acid；
And/or in the back extraction processing, in the aqueous solution of the acid, H+A concentration of 2mol/L；
And/or in the back extraction processing, aqueous solution and the load Fe of the acid3+Organic phase volume ratio
It is 2:1；
And/or in the stripping steps, aqueous solution and the load Fe of the acid3+Organic phase back extraction
Series is 4 grades；
And/or in the back extraction processing, the load Fe3+Acid aqueous solution can be used for preparing iron-containing product；
And/or in the back extraction processing, the blank organic phase is used for the nickeliferous and iron as extracts composition
Aqueous solution processing method, namely return extraction process recycle；
And/or in the processing method of the aqueous solution of the nickeliferous and iron, the feed liquid for removing iron enters next stage process, and electricity is heavy
Product obtains the products such as nickel, copper and cobalt.
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| CN109628750A (en) * | 2019-01-31 | 2019-04-16 | 王东升 | A kind of preparation method of spherical shape iron powder |
| CN112280982A (en) * | 2020-11-12 | 2021-01-29 | 济南大学 | Method for separating iron from phosphorite leaching solution by utilizing diphosphonic acid extractant |
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| CN114134341A (en) * | 2020-09-04 | 2022-03-04 | 苏州博萃循环科技有限公司 | Method for recovering nickel, cobalt and manganese in feed liquid containing nickel, cobalt and manganese |
| CN115058597A (en) * | 2022-06-30 | 2022-09-16 | 盛隆资源再生（无锡）有限公司 | Method for recycling electroplating sludge containing calcium, iron, cobalt and nickel |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109628750A (en) * | 2019-01-31 | 2019-04-16 | 王东升 | A kind of preparation method of spherical shape iron powder |
| CN114134341A (en) * | 2020-09-04 | 2022-03-04 | 苏州博萃循环科技有限公司 | Method for recovering nickel, cobalt and manganese in feed liquid containing nickel, cobalt and manganese |
| CN112280982A (en) * | 2020-11-12 | 2021-01-29 | 济南大学 | Method for separating iron from phosphorite leaching solution by utilizing diphosphonic acid extractant |
| CN112813264A (en) * | 2020-12-29 | 2021-05-18 | 中国科学院江西稀土研究院 | Extraction and recovery method of valuable elements in neodymium iron boron waste |
| CN115058597A (en) * | 2022-06-30 | 2022-09-16 | 盛隆资源再生（无锡）有限公司 | Method for recycling electroplating sludge containing calcium, iron, cobalt and nickel |
| CN115058597B (en) * | 2022-06-30 | 2024-06-04 | 盛隆资源再生（无锡）有限公司 | Recovery treatment method of electroplating sludge containing calcium, iron, cobalt and nickel |
| CN117965914A (en) * | 2024-03-28 | 2024-05-03 | 赣南科技学院 | Method for extracting and separating gallium and germanium from zinc replacement slag sulfuric acid leaching solution |
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