CN108977666A - The recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy - Google Patents
The recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy Download PDFInfo
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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
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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
- C22B23/0461—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods
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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
- C22B23/0461—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods
- C22B23/0469—Treatment or purification of solutions, e.g. obtained by leaching by chemical methods by chemical substitution, e.g. by cementation
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Abstract
The invention discloses a kind of recovery methods of zinc cobalt in purification slag of zinc hydrometallurgy.The poor cadmium cobalt liquid that the copper cadmium that zinc hydrometallurgy is purified in the copper-cadmium slag of one section of generation by the technique first obtains after removing is placed in the heavy cobalt slot of poor cadmium, then two sections of purification slag cobalt nickel slags are subjected to pulp, pulp liquid after pulp is mixed with the poor cadmium cobalt liquid in the heavy cobalt slot of poor cadmium, in the presence of activating agent, by certain reaction time and reaction temperature, is realized by the zinc powder contained in cobalt nickel slag and the cobalt in the heavy cobalt liquid of poor cadmium is settled；The zinc powder of cobalt nickel slag is recycled while being realized and adequately settled to cobalt in the heavy cobalt liquid of poor cadmium by this method, is greatly reduced the consumption of zinc powder, is reduced production cost.The simple process, rationally, it is easy to operate, realize recycling for waste residue well, have a good application prospect.
Description
Technical field
The invention belongs to metal smelt slag recovery processing technical field more particularly to a kind of benefits again of purification slag of zinc hydrometallurgy
With method, and in particular to the recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy.Replace zinc powder to poor cadmium cobalt liquid purification slag
In cobalt carry out heavy cobalt recycling, both realized the recycling of purification slag, while also achieving and zinc in purification slag, cobalt are returned
It receives.
Technical background
Hydrometallurgical technology is that low energy consumption, pollutes less, the metal smelt that raw material grade is low, recovery rate of valuable metals is high for one kind
Method occupies an important position in the field of smelting of the metals such as copper, lead, zinc.Wherein, the zinc yield of whole world zinc hydrometallurgy accounts for
70% or more of zinc total output, and domestic zinc hydrometallurgy yield is also the 2 times or more of pyrometallurgy of zinc yield.
In hydrometallurgy process, a variety of accompanying elements are usually contained in the hydrometallurgy raw material of use, influence to smelt gold
The grade of category.Therefore, it in order to smelt the less high quality of products of impurity content out, needs to carry out purification and impurity removal to metallurgical raw material.
The impurity contained in raw material usually is removed by the way that excessive singlet metal powder is added in purification slag removal.
It is then to be contained by the addition of singlet metal zinc by displacement with removing in raw materials for metallurgy in Zinc Hydrometallurgy Process
Some impurity, displacement are generally divided into two sections, and first segment displacement is mainly copper removal cadmium, and the waste residue of generation is copper-cadmium slag, and second segment is set
The purpose changed is to remove micro nickel and cobalt, and the waste residue of generation is cobalt nickel slag.It therefore include a large amount of in the slag that displacement generates
The metallic elements such as metallic zinc and copper, cadmium, cobalt, nickel, purification slag application value with higher.Cobalt therein is a kind of important
Strategy metal, can be used in the manufacture of heat-resisting alloy, corrosion resisting alloy, hard alloy, magnetic material etc., but China is distributed
The universal grade of type containing cobalt ore the bottom of compared with, extraction value is not high.Therefore, the domestic exploitation containing cobalt ore has been far from satisfying domestic right
In the demand of cobalt resource, so, the secondary recovery recycling of cobalt resource has a good application prospect.
In Zinc Hydrometallurgy Process, copper cadmium connects and can remove by the way that zinc dust precipitation is added, but cobalt, nickel are set using zinc powder
A large amount of zinc powder is consumed when changing, hence it is evident that improve production cost；The addition of other auxiliary agents is also needed, and in this process, zinc
The factors such as the granularity of powder have a very big impact the sedimentation of cobalt, are unfavorable for removing the industrial applications of cobalt during this, and set
It changes except a large amount of excessive zinc powder is contained in the sediment after cobalt, nickel, not can be carried out preferable recycling and reusing.
In addition, purified cobalt nickel slag after broken, waste liquid pulp, is delivered to cadmium and is returned by slurrying tank blender in the prior art
The valuable metals such as the zinc cadmium that waste liquid leaches in dissolution slag, after completion of the reaction, filter press filters pressing are added in the cobalt slag descaling bath for sequence of knocking off
Solid-liquor separation, cobalt slag are used as raw material for cobalt process, and liquid is delivered to the valuable metal leached in process withdrawal liquid.Simultaneously
Cadmium process needs to reject the cobalt metal in poor cadmium cobalt liquid, and using zinc powder, antimonic salt method high temperature Technology for removing cobalt, which uses 92% zinc
In 500kg-1000kg zinc powder, production cost is higher for powder, single slot additional amount.Purified cobalt nickel slag contains the zinc of 50%-60% simultaneously,
Wherein containing the unreacted zinc powder in part (main component is simple substance zinc, and displacement reaction can occur), utility value with higher.
The process causes serious wastage of material.
Summary of the invention
In view of the above-mentioned problems, that is, wet process is refined the present invention provides a kind of recovery method of zinc cobalt in purification slag of zinc hydrometallurgy
The recycling and reusing method of zinc purification slag.This method by Zinc Hydrometallurgy Process two sections generation cobalt nickel slag, by waste liquid pulp,
It is delivered to the heavy cobalt slot of cadmium, a certain amount of poor cadmium cobalt liquid is added in heavy cobalt slot, passes through and activator antimonic salt is added, guarantees enough reactions
Temperature, reaction time remove the cobalt metal in poor cadmium cobalt liquid, and liquid cobalt content is made to be reduced to 0.03g/l hereinafter, the present invention focuses on
It replaces the heavy cobalt of zinc powder to use in purified cobalt nickel slag, is directly realized by heavy cobalt zinc powder list slot usage amount and is reduced to zero to disappear by 500-1000kg
The purpose of consumption.
The present invention is achieved by the following technical solutions
The recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy, method includes the following steps:
S1: one section of purification copper-cadmium slag of zinc hydrometallurgy leaches, primary displacement, twice replaced, the poor cadmium of output by neutrality
Cobalt liquor is placed in the heavy cobalt slot of poor cadmium, to be processed；
S2: cobalt nickel slag is carried out pulp, the cobalt nickel slurry obtained after pulp by the cobalt nickel slag of two sections of zinc hydrometallurgy generations of recycling
Change in the heavy cobalt slot of poor cadmium described in pulp conveying to step S1, is mixed with the liquid in the heavy cobalt slot of poor cadmium, obtain mixed liquor；
Should during, the acidity that the cobalt nickel slag carries out liquid used when pulp is 150~200g/l, gained cobalt after pulp
PH value >=2 of nickel slurry ore pulp；The time of pulp reaction is 2~6 hours, cobalt nickel slag in gained pulp ore pulp after pulp reaction
Specific gravity be 1.2~1.8g/cm3。
The acidity is that the acid in the liquid of 150~200g/l is sulfuric acid.
S3: being added antimony oxide in the heavy cobalt slot mixed liquor of the poor cadmium described in step S2, stir evenly, and is 70 in temperature
It is reacted 2~6 hours under conditions of~120 DEG C；After reaction, by poor cadmium sink cobalt slot in reaction solution be delivered in filter press into
Row is separated by solid-liquid separation；Obtain filtrate and filter residue；
During being somebody's turn to do, determine that heavy cobalt uses antimony oxide dosage according to the cobalt content in poor cadmium cobalt liquid, according to poor cadmium cobalt
Antimony oxide is added according to antimony oxide and 0.2~1:1 of cobalt mass ratio in cobalt element content in liquid.
The recovery method of zinc cobalt in the purification slag of zinc hydrometallurgy further includes step S4, the step after the step S3
Rapid S4 operation is as follows: the filtrate that step S3 is obtained returns to main system reuse (main system of zinc hydrometallurgy), and obtained filter residue carries out
Recycling, separates and recovers zinc, the cobalt in filter residue.
That is: zinc excessive in purification slag can be recycled to obtain in the form of simple substance by recovery method of the present invention
High-grade zinc simple substance (utilization) has very high utility value.Zinc powder had both played the role of Call Provision early period, nickel, again
To preferable recycling, realizes and adequately recycle, also achieve simple substance cobalt while recycling to simple substance zinc and return
It receives.In the presence of an activator simultaneously in one section of slag and two sections of slags zinc and cobalt carried out the recycling of high value, simple process,
It is easy to operate, cost recovery is low.
Recovery principle of the invention is as follows: the purification copper-cadmium slag of one section of zinc hydrometallurgy generation, leaches by neutrality, once sets
It changes, is twice replaced, the poor cadmium cobalt liquor of output is placed in the heavy cobalt slot of poor cadmium；Then zinc hydrometallurgy is purified into the net of two sections of generations
Change cobalt nickel slag is placed in the heavy cobalt slot of poor cadmium and mixes with solution therein, the activator antimony oxide being added after mixing, three oxidations
Two antimony can further increase the activity of simple substance zinc in cobalt nickel slag, and under certain conditions, the increased simple substance zinc of activity is further
Promoting cobalt sedimentation and zinc simple substance in mixed liquor to settle simultaneously becomes slag, and the cobalt element and zinc simple substance in liquid pass through certain
Largely sedimentation forms slag after reaction, and the elements such as minimal amount of zinc and cobalt are remained in liquid, carries out recycling and reusing.
Compared with prior art, the present invention has following positive beneficial effect
By one section of zinc hydrometallurgy purify copper-cadmium slag in cobalt directly adopt simple substance zinc dust precipitation, can consume a large amount of zinc powder,
Processing cost is increased, and excessive zinc powder cannot be recycled preferably, causes the serious waste of resource.The present invention will
Liquid and two section purified cobalt nickel slag phases of the copper-cadmium slag after neutral leaching, one section of displacement and two sections of displacements after removing copper, cadmium
Interaction, zinc present in two sections of purified cobalt nickel slags in the presence of an activator fills the cobalt in one section of liquid during being somebody's turn to do
The sedimentation divided, while zinc present in two sections of purified cobalt nickel slags is also adequately settled, i.e., after one section purification removes copper, cadmium
Cobalt in liquid and the zinc in two sections of purified cobalt nickel slags, cobalt settle simultaneously forms slag, and cobalt is adequately settled while zinc simple substance
Also sufficient recycling has been obtained.Therefore, it during being somebody's turn to do, is interacted by one section of purification remaining liq and two sections of purification slags,
It settles zinc and cobalt therein adequately, the Zn-ef ficiency and cobalt element of purification slag is filled
The recycling divided, grade is high, recycle value with higher；
Therefore, the present invention carries out heavy cobalt using the zinc powder in cobalt nickel slag, replaces zinc powder using purification slag, and the cobalt that sinks realizes zinc powder
Zero addition, directly reduce the usage amount of zinc powder (copper, cadmium, cobalt are required to that excessive zinc powder is added in infall process)；Together
When recycled zinc in purification slag and to the greatest extent also in order to remove the excessive zinc powder being added when the copper in purification slag, cadmium,
Abundant, high-grade recycling has been carried out to zinc powder；
Present invention process design is rationally, succinctly, easy to operate, and there is no the addition of a large amount of additional agents and the behaviour of complexity
Make, resource utilization is high, and the filtrate of system, filter residue can be recycled, pollution-free；Entire recovery process saving at
Originally, high-efficient, at low cost, there is good industrial applications prospect in this field.
Detailed description of the invention
Fig. 1 is the process flow chart of zinc cobalt recovery method of the present invention.
Specific embodiment
The present invention is described in more details below by specific embodiment, but be not intended to restrict the invention
Protection scope.It containing the acid contained in acid waste liquid is sulfuric acid that acidity described in following embodiment, which is 150-200g/l,.
Embodiment 1
The recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy, method includes the following steps:
S1: by one section of purification copper-cadmium slag of zinc hydrometallurgy, leached by neutrality, primary displacement, it is twice replaced after, output it is poor
Cadmium cobalt liquor is placed in the heavy cobalt slot of poor cadmium, to be processed；
Wherein, the poor cadmium cobalt liquid being placed in the heavy cobalt slot of poor cadmium is 40m3, wherein cobalt content is 0.089g/l, and the content of zinc is
45.5g/l；S2: the cobalt nickel slag of two sections of zinc hydrometallurgy generations of recycling, it is useless using the 150-200g/l containing acid generated in electrolytic process
Cobalt nickel slag is carried out pulp (mixing) by liquid, and 4h is reacted in pulp, obtains pulp ore pulp；
Cobalt nickel slag ore pulp after pulp is delivered in the heavy cobalt slot of poor cadmium described in step S1 by delivery pump, with the heavy cobalt of poor cadmium
Poor cadmium cobalt liquid in slot is mixed, and the amount for being delivered to the cobalt nickel slurry ore pulp in the heavy cobalt slot of poor cadmium is 8m3；
Wherein, the mass fraction of singlet metal zinc is 48% in two sections of cobalt nickel slags；The content of cobalt element
0.31%, the specific gravity of cobalt nickel slag is 1.4g/cm in gained cobalt nickel slurry ore pulp3；
S3: antimony oxide 2kg is added in the heavy cobalt slot mixed liquor of the poor cadmium described in step S2, stirs evenly, in temperature
It is reacted 4 hours under conditions of being 70~90 DEG C；After reaction, by poor cadmium sink cobalt slot in reaction solution be delivered in filter press into
Row is separated by solid-liquid separation；Obtain filtrate and filter residue；
S4: the filtrate that step S3 is obtained returns to zinc hydrometallurgy main system and carries out reuse；Filter residue recycling, in filter residue zinc,
Cobalt is separated and recovered.
The cobalt content in filtrate obtained by step S4 is detected using spectrophotometry, and metallic zinc in filter residue is contained
Amount is detected, as the result is shown: cobalt content is 0.012g/l in gained filtrate, and the mass content of zinc is in gained filter residue
41.5%.Abundant recycling has been carried out to cobalt and zinc simultaneously, has both sufficiently recycled the cobalt in purification slag, while also in purification slag
Zinc carried out abundant recycling.
Embodiment 2
The recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy, method includes the following steps:
S1: by one section of purification copper-cadmium slag of zinc hydrometallurgy, leached by neutrality, primary displacement, it is twice replaced after, output it is poor
Cadmium cobalt liquor is placed in the heavy cobalt slot of poor cadmium, to be processed；
Wherein, the solution being placed in the heavy cobalt slot of poor cadmium is 35m3；Cobalt content is 0.15g/l in the poor cadmium cobalt liquid, in waste liquid
The content of zinc is 53.8g/l；
S2: the cobalt nickel slag of two sections of zinc hydrometallurgy generations of recycling uses acidity to contain acid waste liquid for cobalt nickel for 150-200g/l
Slag carries out pulp (mixing), and 3h is reacted in pulp, obtains pulp ore pulp；
Cobalt nickel slurry ore pulp after pulp is delivered in the heavy cobalt slot of poor cadmium described in step S1 by delivery pump, with poor cadmium
Poor cadmium cobalt liquid in heavy cobalt slot is mixed, and the amount for being delivered to the pulp ore pulp in the heavy cobalt slot of poor cadmium is 10m3；
Wherein, the mass fraction of singlet metal zinc is 53% in two sections of cobalt nickel slags；The content of cobalt element
0.22%；The specific gravity of cobalt nickel slag is 1.45g/cm in gained cobalt nickel slurry ore pulp3；
S3: antimony oxide 3kg is added in the heavy cobalt slot mixed liquor of the poor cadmium described in step S2, stirs evenly, in temperature
It is reacted 2 hours under conditions of being 80~100 DEG C；After reaction, the reaction solution in the heavy cobalt slot of poor cadmium is delivered in filter press
It is separated by solid-liquid separation；Obtain filtrate and filter residue；
S4: the filtrate that rapid S3 is obtained returns to zinc hydrometallurgy main system and carries out reuse；Filter residue recycling, to zinc, the cobalt in filter residue
It is separated and recovered.
The cobalt content in filtrate obtained by step S4 is detected using spectrophotometry, and metallic zinc in filter residue is contained
Amount is detected, as the result is shown: cobalt content is 0.0084g/l in gained filtrate, and the mass content of zinc is in gained filter residue
45.7%.Abundant recycling has been carried out to cobalt and zinc simultaneously, has both sufficiently recycled the cobalt in purification slag, while also in purification slag
Zinc carried out abundant recycling.
Embodiment 3
The recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy, method includes the following steps:
S1: by one section of purification copper-cadmium slag of zinc hydrometallurgy, leached by neutrality, primary displacement, it is twice replaced after, output it is poor
Cadmium cobalt liquor is placed in the heavy cobalt slot of poor cadmium, to be processed；
Wherein, the poor cadmium cobalt liquid being placed in the heavy cobalt slot of poor cadmium is 30m3, cobalt content is 0.26g/l in the poor cadmium cobalt liquid, is given up
The content 55.6g/l of zinc in liquid；
S2: the cobalt nickel slag of two sections of zinc hydrometallurgy generations of recycling uses the acidity generated in electrolytic process for 150-200g/l
Containing acid waste liquid by cobalt nickel slag carry out pulp (mixings), pulp reaction 3h, obtain pulp ore pulp；
Cobalt nickel slurry ore pulp after pulp is delivered in the heavy cobalt slot of poor cadmium described in step S1 by delivery pump, with poor cadmium
Waste liquid in heavy cobalt slot is mixed, and the amount for being delivered to the pulp ore pulp in the heavy cobalt slot of poor cadmium is 12m3；
Wherein, the mass fraction of singlet metal zinc is 55% in two sections of cobalt nickel slags；The content of cobalt element is
0.27%；The specific gravity of cobalt nickel slag is 1.5g/cm in gained cobalt nickel slurry ore pulp3；
S3: antimony oxide 4kg is added in the heavy cobalt slot mixed liquor of the poor cadmium described in step S2, stirs evenly, in temperature
It is reacted 4 hours under conditions of being 80~100 DEG C；After reaction, the reaction solution in the heavy cobalt slot of poor cadmium is delivered in filter press
It is separated by solid-liquid separation；Obtain filtrate and filter residue；
S4: the filtrate that step S3 is obtained returns to zinc hydrometallurgy main system and carries out reuse；Filter residue recycling, in filter residue zinc,
Cobalt is separated and recovered.
The cobalt content in filtrate obtained by step S4 is detected using spectrophotometry, and metallic zinc in filter residue is contained
Amount is detected, as the result is shown: cobalt content is 0.018g/l in gained filtrate, and the mass content of zinc is in gained filter residue
43.9%.Abundant recycling has been carried out to cobalt and zinc simultaneously, has both sufficiently recycled the cobalt in purification slag, while also in purification slag
Zinc carried out abundant recycling.
Embodiment 4
The recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy, method includes the following steps:
S1: by one section of purification copper-cadmium slag of zinc hydrometallurgy, leached by neutrality, primary displacement, it is twice replaced after, output it is poor
Cadmium cobalt liquor is placed in the heavy cobalt slot of poor cadmium, to be processed；
Wherein, the poor cadmium cobalt liquid being placed in the heavy cobalt slot of poor cadmium is 45m3, cobalt content is 0.088g/l in the poor cadmium cobalt liquid, is given up
The content of zinc is 59.5g/l in liquid；
S2: the cobalt nickel slag of two sections of zinc hydrometallurgy generations of recycling uses acidity to contain acid waste liquid to cobalt nickel for 150-200g/l
Slag carries out pulp (mixing), and 5h is reacted in pulp, obtains pulp ore pulp；
Cobalt nickel slurry ore pulp after pulp is delivered in the heavy cobalt slot of poor cadmium described in step S1 by delivery pump, with poor cadmium
Poor cadmium cobalt liquid in heavy cobalt slot is mixed, and the amount for being delivered to the pulp ore pulp in the heavy cobalt slot of poor cadmium is 8m3；
Wherein, the mass fraction of singlet metal zinc is 56% in two sections of purified cobalt nickel slags；The content of cobalt element
It is 0.36%；The specific gravity of cobalt nickel slag is 1.5g/cm in gained cobalt nickel slurry ore pulp3；
S3: antimony oxide 3kg is added in the heavy cobalt slot mixed liquor of the poor cadmium described in step S2, stirs evenly, in temperature
It is reacted 4 hours under conditions of being 70~90 DEG C；After reaction, by poor cadmium sink cobalt slot in reaction solution be delivered in filter press into
Row is separated by solid-liquid separation；Obtain filtrate and filter residue；
S4: the filtrate that step S3 is obtained returns to zinc hydrometallurgy main system and carries out reuse；Filter residue recycling, in filter residue zinc,
Cobalt is separated and recovered.
The cobalt content in filtrate obtained by step S4 is detected using spectrophotometry, and metallic zinc in filter residue is contained
Amount is detected, as the result is shown: cobalt content is 0.0056g/l in gained filtrate, and the mass content of zinc is in gained filter residue
44.3%.Abundant recycling has been carried out to cobalt and zinc simultaneously, has both sufficiently recycled the cobalt in purification slag, while also in purification slag
Zinc carried out abundant recycling.
Therefore, the present invention by shirtsleeve operation technique simultaneously by one section of zinc hydrometallurgy, one section of purification slag cobalt, zinc and
Cobalt, zinc in two sections of purification slags have carried out efficient recycling, have carried out sufficient recycling and reusing to purification slag of zinc hydrometallurgy, lead to
The recycling of valuable metal in two kinds of slags is realized in the interaction crossed between two kinds of slags of one section of purification slag and two sections of purification slags, is reduced
The waste of a large amount of source materials, economic benefit is very high, has good prospects for commercial application.
Claims (7)
1. the recovery method of zinc cobalt in a kind of purification slag of zinc hydrometallurgy, which is characterized in that method includes the following steps:
S1: by one section of purification copper-cadmium slag of zinc hydrometallurgy, after being leached by neutrality, once replacing, is twice replaced, the poor cadmium cobalt of output
Liquor is placed in the heavy cobalt slot of poor cadmium, to be processed；
S2: the cobalt nickel slag of two sections of zinc hydrometallurgy generations of recycling carries out pulp to cobalt nickel slag and reacts to obtain pulp ore pulp, pulp reaction
Poor cadmium described in cobalt nickel slag pulp conveying to step S1 afterwards sinks in cobalt slot, is mixed with the poor cadmium cobalt liquid in the heavy cobalt slot of poor cadmium
It closes, obtains mixed liquor；
S3: the poor cadmium described in step S2 sink cobalt slot mixed liquor in antimony oxide is added, stir evenly, temperature be 70~
It is reacted 2~6 hours under conditions of 120 DEG C；After reaction, the reaction solution in the heavy cobalt slot of poor cadmium is delivered in filter press and is carried out
It is separated by solid-liquid separation；Obtain filtrate and filter residue.
2. the recovery method of zinc cobalt in purification slag of zinc hydrometallurgy according to claim 1, which is characterized in that described in step S2
The acidity of liquid used is 150~200g/l when cobalt nickel slurryization is reacted；The pH value of pulp ore pulp obtained by after cobalt nickel slurry >=
2。
3. the recovery method of zinc cobalt in purification slag of zinc hydrometallurgy according to claim 2, which is characterized in that the acidity is
Acid in the liquid of 150~200g/l is sulfuric acid.
4. according to claim 1~3 in described in any item purification slag of zinc hydrometallurgies zinc cobalt recovery method, which is characterized in that
The time that cobalt nickel slag described in step S2 carries out pulp reaction is 2~6 hours.
5. according to claim 1~3 in described in any item purification slag of zinc hydrometallurgies zinc cobalt recovery method, which is characterized in that
The specific gravity of cobalt nickel slag is 1.2~1.8g/cm in gained pulp ore pulp after reacting described in step S23。
6. the recovery method of zinc cobalt in purification slag of zinc hydrometallurgy according to claim 1, which is characterized in that described in step S3
The mass ratio of cobalt content is 0.2~1:1 in poor cadmium cobalt liquor described in the additional amount and step S1 of antimony oxide.
7. the recovery method of zinc cobalt in purification slag of zinc hydrometallurgy according to claim 1, which is characterized in that after step S3 also
Including step S4, the described step S4 operation is as follows: the filtrate return main system reuse that step S3 is obtained, obtained filter residue into
Row recycling, separates and recovers zinc, the cobalt in filter residue.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114472881A (en) * | 2021-12-30 | 2022-05-13 | 深圳市中金岭南有色金属股份有限公司丹霞冶炼厂 | Zinc powder activated slurry and preparation method thereof, impurity removal method and impurity removal device |
| CN114774693A (en) * | 2022-05-06 | 2022-07-22 | 新疆紫金有色金属有限公司 | Comprehensive utilization method of zinc hydrometallurgy two-clean slag |
| CN114774692A (en) * | 2022-04-29 | 2022-07-22 | 新疆紫金有色金属有限公司 | Method for removing cadmium and cobalt from poor cadmium solution of zinc hydrometallurgy system |
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| CN114875242A (en) * | 2022-04-25 | 2022-08-09 | 河南豫光锌业有限公司 | Method for improving copper recovery rate from copper-cadmium slag |
| CN114774692A (en) * | 2022-04-29 | 2022-07-22 | 新疆紫金有色金属有限公司 | Method for removing cadmium and cobalt from poor cadmium solution of zinc hydrometallurgy system |
| CN114774693A (en) * | 2022-05-06 | 2022-07-22 | 新疆紫金有色金属有限公司 | Comprehensive utilization method of zinc hydrometallurgy two-clean slag |
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