CN107739845A - A kind of cleaning procedure of reducing leaching Africa heterogenite - Google Patents
A kind of cleaning procedure of reducing leaching Africa heterogenite Download PDFInfo
- Publication number
- CN107739845A CN107739845A CN201710772951.4A CN201710772951A CN107739845A CN 107739845 A CN107739845 A CN 107739845A CN 201710772951 A CN201710772951 A CN 201710772951A CN 107739845 A CN107739845 A CN 107739845A
- Authority
- CN
- China
- Prior art keywords
- heterogenite
- cleaning procedure
- africa
- reducing
- leaching
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Classifications
-
- 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
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
- C22B23/043—Sulfurated 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
-
- 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
Abstract
The invention discloses a kind of cleaning procedure of reducing leaching Africa heterogenite, comprise the following steps：Required solid-to-liquid ratio ore pulp is modulated into after heterogenite ball milling with water, required sulfuric acid is added, is warming up to and requires temperature, reducing agent is added by 0.5 ~ 1 times of amount of cobalt amount of metal.Reaction to required time can complete reducing leaching process；The reducing agent is hydrazine hydrate and/or azanol.The cleaning procedure of the reducing leaching Africa heterogenite of the present invention has the characteristics of safe, environment-friendly type is good, technique is simple and cost is cheap.
Description
Technical field
The present invention relates to metallurgical technology technical field, particularly a kind of cleaning procedure of reducing leaching Africa heterogenite.
Background technology
The extract technology of current African heterogenite is to add reducing agent to carry out reduction acidleach with sulfuric acid：Heterogenite passes through wet method ball
After mill, after ore pulp adjusts ore pulp ratio, add sulfuric acid and acidic reduction leaching is carried out at higher than 70 DEG C.Due to having portion in heterogenite
It is trivalent to divide cobalt, it is impossible to is directly leached by sulfuric acid.Therefore a certain amount of reducing agent is added in leaching process.It is routinely added to
Reducing agent be sodium sulfite（Or sodium pyrosulfite, sulfur dioxide gas etc.）.Leach complete after, by temperature rise to 90 DEG C with
On, add oxidant（Typically sodium chlorate）Will be ferrous oxidising into ferric iron in solution, add sodium carbonate（Or carbonic acid
Hydrogen ammonium）Carry out yellow sodium（Ammonium）Siderotil iron removaling, 40 DEG C or so are cooled the temperature to afterwards, into extraction, workshop section carries out deep purifying and cobalt
Nickel is analyzed.
The shortcomings that this method is：One is the increase in the salt in leachate, easily causes salt and separates out plugging；Second, increase
, potential safety hazard be present in environmental protection pressure.
It is deep because because reducing agent is added in a manner of salt, necessarily increasing the salt in leachate to study carefully its.With cobalt content
Exemplified by 30g/L leachate, its ion concentration amounts up to nearly 200g/L.The ion concentration that wherein reducing agent is brought into exceedes
40g/L, just account for more than 1/5 proportion.In addition during the chemical subtraction in later stage, substantial amounts of chemical reagent is also added,
Cause the salt of liquid after cleaning too high.Before extraction deep purifying and separation is entered, the temperature of solution is by by chemical subtraction
More than 90 DEG C are down to 40 DEG C, and this temperature-fall period will have substantial amounts of salt and separate out.Here it is cause cobalt salt production line pre-treatment
There is the immediate cause of pipeline obstruction in Duan Jingchang.
High additionally, due to Leach reaction temperature, in reduction process, the spilling of sulfur dioxide gas is unavoidable.Therefore exist
A set of gas elution retracting device will be had by leaching process, and absorption processing is carried out to the sulfur dioxide gas of spilling.Add ring
Border is born, and potential safety hazard be present..
The content of the invention
The main purpose of the present invention is the provision of a kind of cleaning procedure of reducing leaching Africa heterogenite, has safety
Property it is high, environment-friendly type is good, technique is simple and cost is cheap the characteristics of.
The present invention can be achieved through the following technical solutions：
The invention discloses a kind of cleaning procedure of reducing leaching Africa heterogenite, comprise the following steps：
Required solid-to-liquid ratio ore pulp is modulated into after heterogenite ball milling with water, required sulfuric acid is added, is warming up to and requires temperature, by cobalt
0.5 ~ 1 times of amount of amount of metal adds reducing agent.Reaction to required time can complete reducing leaching process；
The reducing agent is hydrazine hydrate and/or azanol.
Further, the scope of described solid-to-liquid ratio is 1t:3.5~5m3。
Further, the addition of required sulfuric acid is 3.5~4.5 times of cobalt metal quality.
Further, it is desirable to which the scope of temperature is more than 70 DEG C.
Further, the scope of required time is 4~6 hours.
The cleaning procedure of reducing leaching Africa of the present invention heterogenite has following beneficial technique effect：
For the cleaning procedure of the present invention, present invention uses a kind of reducing agent that will not bring salt into, leachate is reduced
Salt, while without toxic and harmful gas produce.The reducing agent that prior art uses can bring salt into, while can also produce
Malicious pernicious gas, increase environmental protection pressure.The reducing agent that the present invention selects：Hydrazine hydrate and azanol etc, the final product of reaction are
Nitrogen and water, the two caused problems of prior art can be avoided simultaneously, the salt content 40g/L in leachate can be reduced
More than.And produced without toxic and harmful gas, reduce environmental protection pressure..
Embodiment
In order that those skilled in the art will better understand the technical solution of the present invention, with reference to embodiment and to this
Invention product is described in further detail.
Embodiment 1
The invention discloses a kind of cleaning procedure of reducing leaching Africa heterogenite, comprise the following steps：
Required solid-to-liquid ratio ore pulp is modulated into after heterogenite ball milling with water, required sulfuric acid is added, is warming up to and requires temperature, by cobalt
0.5 ~ 1 times of amount of amount of metal adds reducing agent.Reaction to required time can complete reducing leaching process；
The reducing agent is hydrazine hydrate and/or azanol.
In the present embodiment, the scope of described solid-to-liquid ratio is 1t:3. 5m3.The addition of required sulfuric acid is cobalt metal
4 times of quality.It is required that the scope of temperature is more than 70 DEG C.The scope of required time is 4 hours.
Embodiment 2
The invention discloses a kind of cleaning procedure of reducing leaching Africa heterogenite, comprise the following steps：
Required solid-to-liquid ratio ore pulp is modulated into after heterogenite ball milling with water, required sulfuric acid is added, is warming up to and requires temperature, by cobalt
0.5 ~ 1 times of amount of amount of metal adds reducing agent.Reaction to required time can complete reducing leaching process；
The reducing agent is hydrazine hydrate and/or azanol.
In the present embodiment, the scope of described solid-to-liquid ratio is 1t:4.2m3.The addition of required sulfuric acid is cobalt metal
3.5 times of quality.It is required that the scope of temperature is more than 70 DEG C.The scope of required time is 6 hours.
Embodiment 3
The invention discloses a kind of cleaning procedure of reducing leaching Africa heterogenite, comprise the following steps：
Required solid-to-liquid ratio ore pulp is modulated into after heterogenite ball milling with water, required sulfuric acid is added, is warming up to and requires temperature, by cobalt
0.5 ~ 1 times of amount of amount of metal adds reducing agent.Reaction to required time can complete reducing leaching process；
The reducing agent is hydrazine hydrate and/or azanol.
In the present embodiment, the scope of described solid-to-liquid ratio is 1t:3.5m3.The addition of required sulfuric acid is cobalt metal
4.5 times of quality.It is required that the scope of temperature is more than 70 DEG C.The scope of required time is 5 hours.
Embodiment 4
The invention discloses a kind of cleaning procedure of reducing leaching Africa heterogenite, comprise the following steps：
Required solid-to-liquid ratio ore pulp is modulated into after heterogenite ball milling with water, required sulfuric acid is added, is warming up to and requires temperature, by cobalt
0.5 ~ 1 times of amount of amount of metal adds reducing agent.Reaction to required time can complete reducing leaching process；
The reducing agent is hydrazine hydrate and/or azanol.
In the present embodiment, the scope of described solid-to-liquid ratio is 1t:4m3.The addition of required sulfuric acid is cobalt metallic
3.8 times of amount.It is required that the scope of temperature is more than 70 DEG C.The scope of required time is 5 hours.
Application Example 1
The composition of heterogenite：Co：12.288%、Cu：1.434%.The good heterogenite of ball milling is pressed into liquid-solid ratio 4.5：1 sizes mixing, by cobalt
3.8 times of amount of metal add needed for sulfuric acid, be warming up to 75 DEG C, during add cobalt 0.5 times of hydrazine hydrate of amount of metal by several times in batches.
Extraction time is 5 hours.Cobalt is 0.22% in the leached mud finally given, copper 0.15%；The leaching rate of cobalt copper is respectively：97.4%、
84.3%
Application Example 2
The composition of heterogenite：Co：12.288%、Cu：1.434%.The good heterogenite of ball milling is pressed into liquid-solid ratio 3.8：1 sizes mixing, by cobalt
4.2 times of amount of metal add needed for sulfuric acid, be warming up to 90 DEG C, during add cobalt 0.8 times of azanol of amount of metal by several times in batches.Leaching
Go out the time for 4 hours.Cobalt is 0.19% in the leached mud finally given, copper 0.14%；The leaching rate of cobalt copper is respectively：98.8%、
85%。
For the cleaning procedure of the present invention, present invention uses a kind of reducing agent that will not bring salt into, leaching is reduced
Go out the salt of liquid, while produced without toxic and harmful gas.The reducing agent that prior art uses can bring salt into, while can also produce
Raw toxic and harmful gas, increases environmental protection pressure.The reducing agent that the present invention selects：Hydrazine hydrate, the final product of reaction be nitrogen and
Water, the two caused problems of prior art can be avoided simultaneously, more than the salt content 40g/L in leachate can be reduced.
And produced without toxic and harmful gas, reduce environmental protection pressure.
The foregoing is only a preferred embodiment of the present invention, not makees any formal limitation to the present invention；It is all
The those of ordinary skill of the industry can be shown in by specification and described above and swimmingly implement the present invention；It is but all familiar
Professional and technical personnel without departing from the scope of the present invention, makes using disclosed above technology contents
A little variation, modification and evolution equivalent variations, be the present invention equivalent embodiment；Meanwhile all realities according to the present invention
Variation, modification and evolution of any equivalent variations that matter technology is made to above example etc., still fall within the technology of the present invention
Within the protection domain of scheme.
Claims (5)
1. the cleaning procedure of a kind of reducing leaching Africa heterogenite, it is characterised in that comprise the following steps：
Required solid-to-liquid ratio ore pulp is modulated into after heterogenite ball milling with water, required sulfuric acid is added, is warming up to and requires temperature, by cobalt
0.5 ~ 1 times of amount of amount of metal adds reducing agent, and reducing leaching process can be completed by reacting to required time；
The reducing agent is hydrazine hydrate and/or azanol.
2. the cleaning procedure of reducing leaching Africa according to claim 1 heterogenite, it is characterised in that：Described solid-to-liquid ratio
Scope be 1t:3.5~5m3。
3. the cleaning procedure of reducing leaching Africa according to claim 1 or 2 heterogenite, it is characterised in that：Required sulphur
The addition of acid is 3.5~4.5 times of cobalt metal quality.
4. the cleaning procedure of reducing leaching Africa according to claim 3 heterogenite, it is characterised in that：It is required that the model of temperature
Enclose for more than 70 DEG C.
5. the cleaning procedure of reducing leaching Africa according to claim 4 heterogenite, it is characterised in that：The model of required time
Enclose for 4~6 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710772951.4A CN107739845A (en) | 2017-08-31 | 2017-08-31 | A kind of cleaning procedure of reducing leaching Africa heterogenite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710772951.4A CN107739845A (en) | 2017-08-31 | 2017-08-31 | A kind of cleaning procedure of reducing leaching Africa heterogenite |
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| CN107739845A true CN107739845A (en) | 2018-02-27 |
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| CN201710772951.4A Pending CN107739845A (en) | 2017-08-31 | 2017-08-31 | A kind of cleaning procedure of reducing leaching Africa heterogenite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184455A (en) * | 2019-06-20 | 2019-08-30 | 东北大学 | A kind of leaching method of difficult leaching cobalt ore |
| CN110951977A (en) * | 2019-12-11 | 2020-04-03 | 沈阳有色金属研究院有限公司 | Method for leaching cobaltite by using biomass reducing agent |
| CN113278817A (en) * | 2021-05-06 | 2021-08-20 | 广东佳纳能源科技有限公司 | Impurity removal method for cobalt ore and crude cobalt salt sulfuric acid leaching solution and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63137128A (en) * | 1986-11-27 | 1988-06-09 | Agency Of Ind Science & Technol | Acid treatment of manganese nodule |
| RU2095451C1 (en) * | 1997-01-23 | 1997-11-10 | Товарищество с ограниченной ответственностью "Инженер" | Method for extraction of cobalt |
| RU2106417C1 (en) * | 1996-09-25 | 1998-03-10 | Сергеев Валерий Владимирович | Method for recovery of cobalt from middlings containing cobalt oxides |
| CN101509069A (en) * | 2009-03-30 | 2009-08-19 | 南通新玮镍钴科技发展有限公司 | Method for selective solvent extraction of heterogenite with full-wet-process |
| CN101994003A (en) * | 2010-12-10 | 2011-03-30 | 中南大学 | Process for selectively extracting copper and cobalt from heterogenite |
-
2017
- 2017-08-31 CN CN201710772951.4A patent/CN107739845A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63137128A (en) * | 1986-11-27 | 1988-06-09 | Agency Of Ind Science & Technol | Acid treatment of manganese nodule |
| RU2106417C1 (en) * | 1996-09-25 | 1998-03-10 | Сергеев Валерий Владимирович | Method for recovery of cobalt from middlings containing cobalt oxides |
| RU2095451C1 (en) * | 1997-01-23 | 1997-11-10 | Товарищество с ограниченной ответственностью "Инженер" | Method for extraction of cobalt |
| CN101509069A (en) * | 2009-03-30 | 2009-08-19 | 南通新玮镍钴科技发展有限公司 | Method for selective solvent extraction of heterogenite with full-wet-process |
| CN101994003A (en) * | 2010-12-10 | 2011-03-30 | 中南大学 | Process for selectively extracting copper and cobalt from heterogenite |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184455A (en) * | 2019-06-20 | 2019-08-30 | 东北大学 | A kind of leaching method of difficult leaching cobalt ore |
| CN110951977A (en) * | 2019-12-11 | 2020-04-03 | 沈阳有色金属研究院有限公司 | Method for leaching cobaltite by using biomass reducing agent |
| CN113278817A (en) * | 2021-05-06 | 2021-08-20 | 广东佳纳能源科技有限公司 | Impurity removal method for cobalt ore and crude cobalt salt sulfuric acid leaching solution and application thereof |
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Application publication date: 20180227 |