CN105648234A - Separating method for zinc and cobalt in materials containing zinc and cobalt - Google Patents
Separating method for zinc and cobalt in materials containing zinc and cobalt Download PDFInfo
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- CN105648234A CN105648234A CN201610042413.5A CN201610042413A CN105648234A CN 105648234 A CN105648234 A CN 105648234A CN 201610042413 A CN201610042413 A CN 201610042413A CN 105648234 A CN105648234 A CN 105648234A
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- cobalt
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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
- 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
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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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- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the separation and utilization field of cobalt-containing materials, and particularly relates to a separating method for zinc and cobalt in materials containing zinc and cobalt. The separating method comprises the following steps: 1) leaching metal elements in the cobalt-containing materials into an aqueous solution, and then, regulating the pH value of leaching liquor to remove impurity metal elements such as iron and the like, which are easy to precipitate; 2) mixing the leaching liquor subjected to impurity removal in the step 1) with an extracting agent to obtain a mixture, and then, carrying out solvent extraction on the mixture; and 3) using raffinate obtained by extraction to produce metal cobalt, and carrying out reverse extraction on an obtained organic phase, wherein reverse extraction solution is used for producing metal zinc. The method has the advantages of being low in cost, short in production period, high in recovery rate and the like, is suitable for separating purifying residues obtained by wet-process zinc smelting, and is also suitable for zinc and cobalt separation of other materials containing zinc and cobalt.
Description
Technical field
The invention belongs to the extraction and application field containing zinc cobalt material, be specifically related to a kind of separation method containing zinc in zinc cobalt material Yu cobalt.
Background technology
Zinc hydrometallurgy is the topmost smelting process of metallic zinc, and its smelting process includes sulfuric acid, calcining leaching, purification of leaching liquor remove impurity and zinc electrolysis four operations of deposition. Due to zinc concentrate used in producing would generally the metallic element such as association cobalt, ferrum, need to add zinc powder and other cleaners to remove the impurity metallic elements in leachate in purification of leaching liquor dedoping step. Therefore containing outside the valuable metal element such as cobalt, ferrum in the purification slag produced in purification of leaching liquor dedoping step, a large amount of zinc element is also had. Such as, containing zinc 42%, cobalt 3.3%, ferrum 0.5% in the purification slag that Xin Ye company in Fujian produces in process of production. This type of has higher value containing cobalt in zinc cobalt material, and needs when cobalt therein is carried out extraction and application to separate cobalt and other metallic elements. Impurity iron in this type of zinc cobalt material is easier to separate, generally metallic element in material is leached in aqueous solution, then regulating pH value of solution makes iron ion with the form elimination of precipitation, but the precipitation pH of zinc and cobalt is relatively, and the very difficult sedimentation method are so as to separate.
In current separation solution, zinc mainly has oxidation-precipitation method and solvent extraction with the method for cobalt, and wherein oxidation-precipitation method exists the problems such as reagent consumption is big, oxidization time length, product impurity content are high; And solvent extraction rule has, and response speed is fast, with short production cycle, the response rate is high, good selective, as patent of invention " in a kind of electroplating sludge the separation and recovery method of nickel, cobalt, copper, manganese, zinc " (CN104060097A) adopts P507 as extractant, the metallic elements such as the cobalt in electroplating sludge, copper, manganese, zinc can be extracted in organic facies simultaneously, then by the hydrochloric acid of organic facies variable concentrations or sulphuric acid back extraction, respectively obtain containing cobalt strip liquor, cupric strip liquor, containing zinc strip liquor etc. Although this type of adopts the method response rate height of the direct extraction and recovery cobalt element of P507, more than 95% can be reached, but yet suffering from problems with: 1) extracting power of extractant P507 is stronger, cobalt, zinc and other most metals elements in raw material all can be extracted into organic facies, make organic facies complicated component, the operation easier causing each metallic element of later separation is big, and obtain higher containing other metal element contents in cobalt strip liquor;2) P507 is as the stronger extractant of a kind of extracting power, and its price is higher so that the high cost of separation of Zinc and cobalt.
Summary of the invention
It is contemplated that overcome the deficiency that prior art exists, a kind of separation method containing zinc in zinc cobalt material Yu cobalt is provided, recycle the valuable metal cobalt purification slag suitable in zinc hydrometallurgy industry with low cost, short production cycle, high-recovery, be simultaneously applicable to other feed separation zinc containing zinc cobalt and cobalts.
For achieving the above object, the technical scheme that the present invention takes is:
A kind of separation method containing zinc in zinc cobalt material and cobalt is through the following steps that realize:
1) will be leached in aqueous solution containing the metallic element in zinc cobalt material, then regulate pH of leaching solution to remove the impurity metallic elementses such as the ferrum of easily precipitation;
2) solvent extraction is carried out with extractant after being mixed by the leachate after step 1) remove impurity;
3) after extracting, gained raffinate is used for producing metallic cobalt; Gained load organic phases carries out back extraction, and strip liquor is used for producing metallic zinc.
In step 1), regulating pH of leaching solution is 5 ~ 6.5;
Step 2) in, extractant used is P204(di (isooctyl) phosphate);
Step 2) in, solvent extraction condition is: solution ph is 3.5 ~ 4.5, P204 volumetric concentration is 10 ~ 20%, extract be in a ratio of 0.9 ~ 1.2, extraction time be 10 ~ 15min, to extract progression be 4 ~ 7 grades;
In step 3), the back washing agent of load organic phases is the sulfuric acid solution of concentration 1.5 ~ 3mol/L;
In step 3), the back extraction condition of load organic phases is: compare 4.0 ~ 6.0, Stripping times 10 ~ 20min.
In the solvent extraction process of metal ion, the activity due to zinc is generally high than cobalt, thus zinc usually has precedence over cobalt and is extracted, so when solution contains zinc and cobalt simultaneously, to reclaim cobalt therein, then generally require and adopt the extractant that extracting power is stronger that zinc and cobalt are extracted to load organic phases simultaneously, then control back extraction condition separation of Zinc and cobalt. Cobalt then creatively with the extractant that extracting power is more weak, by the zinc in extraction solution to load organic phases, and is retained in raffinate by the present invention, thus realizing separating of zinc and cobalt.
Advantage for present invention and beneficial effect:
1) extractant owing to using is P204 cheap and easy to get so that the cost of extract and separate zinc and cobalt significantly reduces;
2) adopt compared to traditional extraction first extract after back extraction realize separating of zinc and cobalt, the present invention only needs extraction process to can be achieved with separating of zinc and cobalt, thus shortening the technological process that zinc cobalt separates so that production equipment needed thereby, production cost, production cycle all reduce to some extent;
3) present invention just realizes separating of zinc and cobalt in extraction process, but not controls back extraction condition separation of Zinc and cobalt by strict, and therefore the technological operation of the present invention is convenient, simple; There is the advantage that flow process is short, cost is low, the cycle is short, technique is simple, easy to operate.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention:
In order to make content of the present invention easily facilitate understanding, below in conjunction with detailed description of the invention, technical solutions according to the invention are described further, but the present invention is not limited only to this.
Embodiment 1
A kind of separation method containing zinc in zinc cobalt material Yu cobalt:
1) being leached in aqueous solution by the metallic element in zinc cobalt material, then regulating pH of leaching solution is 6, to remove the impurity metallic elementses such as the ferrum of easily precipitation;
2) carrying out solvent extraction with di (isooctyl) phosphate after being mixed by the leachate after step 1) remove impurity, solvent-extracted condition is: solution ph is 4.2, P204 volumetric concentration is 13%, extract be in a ratio of 1.1, extraction time be 12min, to extract progression be 5 grades;
3) after extracting, gained raffinate is used for producing metallic cobalt; The sulphuric acid that gained load organic phases concentration is 2.5mol/L carries out back extraction, and back extraction condition is: compare 5.0, Stripping times 15min; Strip liquor is used for producing metallic zinc.
The present embodiment enables to the extraction yield of zinc in solvent extraction process and reaches 98%, and the extraction yield of cobalt is only 4%; In stripping process, the back extraction of zinc reaches 95%.
Embodiment 2
The separation method of zinc and cobalt in a kind of zinc cobalt material:
1) being leached in aqueous solution containing the metallic element in zinc cobalt material, then regulating pH of leaching solution is 5.5, to remove the impurity metallic elementses such as the ferrum of easily precipitation;
2) carrying out solvent extraction with di (isooctyl) phosphate after being mixed by the leachate after step 1) remove impurity, solvent extraction condition is: solution ph is 4.0, P204 volumetric concentration is 10%, extract be in a ratio of 1.0, extraction time be 15min, to extract progression be 7 grades;
3) after extracting, gained raffinate is used for producing metallic cobalt; The sulphuric acid that gained load organic phases concentration is 2mol/L carries out back extraction, and back extraction condition is: compare 4.0, Stripping times 20min; Strip liquor is used for producing metallic zinc.
The present embodiment enables to the extraction yield of zinc in solvent extraction process and reaches 97%, and the extraction yield of cobalt is only 3.5%; In stripping process, the back extraction of zinc reaches 94%.
Embodiment 3
The separation method of zinc and cobalt in a kind of zinc cobalt material:
1) being leached in aqueous solution by the metallic element in zinc cobalt material, then regulating pH of leaching solution is 6.5, to remove the impurity metallic elementses such as the ferrum of easily precipitation;
2) carrying out solvent extraction with di (isooctyl) phosphate after being mixed by the leachate after step 1) remove impurity, solvent extraction condition is: solution ph is 3.9, P204 volumetric concentration is 20%, extract be in a ratio of 0.9, extraction time be 14min, to extract progression be 4 grades;
3) after extracting, gained raffinate is used for producing metallic cobalt; The sulphuric acid that gained load organic phases concentration is 3mol/L carries out back extraction, and back extraction condition is: compare 6.0, Stripping times 12min; Strip liquor is used for producing metallic zinc.
The present embodiment enables to the extraction yield of zinc in solvent extraction process and reaches 98.5%, and the extraction yield of cobalt is only 4.5%; In stripping process, the back extraction of zinc reaches 96%.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention. Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (6)
1. the separation method containing zinc in zinc cobalt material Yu cobalt, it is characterised in that: realized by following steps:
1) will be leached in aqueous solution containing the metallic element in zinc cobalt material, then regulate pH of leaching solution to remove ferrum and other impurity metallic elementses of part of easily precipitation;
2) solvent extraction is carried out with extractant after being mixed by the leachate after step 1) remove impurity;
3) after extracting, gained raffinate is used for producing metallic cobalt; Gained load organic phases carries out back extraction, and strip liquor is used for producing metallic zinc.
2. according to claim 1 containing the separation method of zinc in zinc cobalt material Yu cobalt, it is characterised in that: step 2) described in extractant be di (isooctyl) phosphate.
3. the separation method containing zinc in zinc cobalt material Yu cobalt according to claim 1 or claim 2, it is characterised in that: regulating pH of leaching solution in step 1) is 5 ~ 6.5.
4. the separation method containing zinc in zinc cobalt material Yu cobalt according to claim 1 or claim 2, it is characterized in that: step 2) solvent-extracted condition is: solution ph is 3.5 ~ 4.5, the volumetric concentration of extractant is 10 ~ 20%, extraction is in a ratio of 0.9 ~ 1.2, extraction time is 10 ~ 15min, and extracting progression is 4 ~ 7 grades.
5. the separation method containing zinc in zinc cobalt material Yu cobalt according to claim 1 or claim 2, it is characterised in that: in step 3), the back washing agent of load organic phases is the sulfuric acid solution of 1.5 ~ 3mol/L.
6. the separation method containing zinc in zinc cobalt material Yu cobalt according to claim 1 or claim 2, it is characterised in that: in step 3), back extraction condition is: compare 4.0 ~ 6.0, Stripping times 10 ~ 20min.
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| CN201610042413.5A CN105648234A (en) | 2016-01-22 | 2016-01-22 | Separating method for zinc and cobalt in materials containing zinc and cobalt |
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| CN201610042413.5A CN105648234A (en) | 2016-01-22 | 2016-01-22 | Separating method for zinc and cobalt in materials containing zinc and cobalt |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151744A (en) * | 2017-04-15 | 2017-09-12 | 桂林理工大学 | It is a kind of to clean the method for extracting zinc |
| CN107557578A (en) * | 2017-08-28 | 2018-01-09 | 三明学院 | A kind of method of P204 extractions divalent cobalt ion |
| CN107760874A (en) * | 2017-10-25 | 2018-03-06 | 三明学院 | A kind of method of cotton-shaped extract and separate zinc cobalt ions |
| CN114774711A (en) * | 2022-05-16 | 2022-07-22 | 安阳锦越新材料有限公司 | Method for extracting zinc and enriching cobalt from zinc and cobalt-containing solution |
| CN114854991A (en) * | 2022-05-16 | 2022-08-05 | 安阳锦越新材料有限公司 | Method for enriching cobalt from zinc hydrometallurgy purification slag |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107151744A (en) * | 2017-04-15 | 2017-09-12 | 桂林理工大学 | It is a kind of to clean the method for extracting zinc |
| CN107557578A (en) * | 2017-08-28 | 2018-01-09 | 三明学院 | A kind of method of P204 extractions divalent cobalt ion |
| CN107760874A (en) * | 2017-10-25 | 2018-03-06 | 三明学院 | A kind of method of cotton-shaped extract and separate zinc cobalt ions |
| CN107760874B (en) * | 2017-10-25 | 2019-02-22 | 三明学院 | A kind of method of cotton-shaped extraction and separation zinc cobalt ions |
| CN114774711A (en) * | 2022-05-16 | 2022-07-22 | 安阳锦越新材料有限公司 | Method for extracting zinc and enriching cobalt from zinc and cobalt-containing solution |
| CN114854991A (en) * | 2022-05-16 | 2022-08-05 | 安阳锦越新材料有限公司 | Method for enriching cobalt from zinc hydrometallurgy purification slag |
| CN114774711B (en) * | 2022-05-16 | 2024-07-05 | 安阳锦越新材料有限公司 | Method for extracting zinc and enriching cobalt from zinc and cobalt-containing solution |
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Application publication date: 20160608 |
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