CN105400960A - Method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron - Google Patents
Method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron Download PDFInfo
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- CN105400960A CN105400960A CN201510806265.5A CN201510806265A CN105400960A CN 105400960 A CN105400960 A CN 105400960A CN 201510806265 A CN201510806265 A CN 201510806265A CN 105400960 A CN105400960 A CN 105400960A
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- Prior art keywords
- cobalt
- leaching
- pressure leaching
- pressure
- liquid
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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
- C22B23/0407—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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/006—Wet processes
- C22B7/007—Wet processes by acid leaching
-
- 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
- C22B7/04—Working-up slag
-
- 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
A method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron comprises the following steps of 1, preparation of liquid; 2, material pulpifying; 3, atmospheric leaching; 4, pressure leaching; and 5, raw material distribution. The method has the beneficial effects that the unique atmospheric leaching, pressure leaching and iron removal technological process is determined through research and test on the cobalt-rich copper matte atmospheric leaching, pressure leaching and pressure iron removal technologies, the recovery rate of nickel and cobalt is greater than or equal to 99% after processing, and the purpose of improving the recovery rate of cobalt is achieved. The technology that pressure leaching and pressure iron removal are conducted simultaneously is studied and developed, pure oxygen is used as an oxidizing agent in the process, the iron content of leached solutions is smaller than 0.5 g/L, and the purifying iron removal load of a nickel production system is prevented from increasing. The single-tank pulpifying is conducted and the uniform feeding pulpifying is controlled by studying and testing the influence of the continuous stability of feeding on temperature control over a pressure reactor, the reactor temperature control stability is achieved, and leaching liquid and leaching indexes achieve the scheduled object.
Description
Technical field
The present invention relates to the recycling of rich cobalt matte processing technique field, specifically a kind of rich cobalt matte pressure leaching nickel cobalt, method for removing iron.
Background technology
Rich cobalt matte is the product of converter slag after electric dilution that low nickel matte produces when bessemerizing, and is wherein rich in cobalt and copper.Because rich cobalt matte does not carry out open circuit process, circulate between dilution stove and converter, the rich cobalt matte of circulation can produce a large amount of slags containing cobalt element, and because slag composition is complicated, causing cannot efficient recovery cobalt element, so cause serious waste.If existing cobalt recovery process can be optimized, improve cobalt metal yield, to optimization smelting technology flow process, promote comprehensive utilization of resources level, increase economic efficiency, upgrading technologies has far reaching significance.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of rich cobalt matte pressure leaching nickel cobalt, method for removing iron, to solve prior art, open circuit process is not carried out to rich cobalt matte, open circuit process is not carried out to rich cobalt matte, the problem that cobalt direct yield is low to solve prior art.
The technical scheme of technical solution problem of the present invention is: a kind of rich cobalt matte pressure leaching nickel cobalt, method for removing iron, described method comprises the steps:
The first step, front liquid preparation: by distilled water, sulphuric acid soln, copper-bath, be uniformly mixed, make sulfuric acid concentration in solution reach 25 ~ 40g/l, copper ion concentration reaches 10 ~ 15g/l.
Second, material pulp: liquid before preparing and rich cobalt matte mixing of materials are reacted; Control pulp liquid-solid ratio 12 ~ 13:1, slurrying temperature is 40 ~ 50 DEG C, and slurry time is 1 ~ 2h.
3rd step, normal pressure leaching: pour the material after pulp into normal pressure leaching pond, passed into by high-pressure air and leach pond, whole leaching process, control temperature remains on 75 ~ 80 DEG C, time 4 ~ 5h; Treat that slurry pH value reaches between 2.5 ~ 3.0.
4th step, pressure leaching: pour the solution after normal pressure leaching process into compressive reaction still, pass into purity oxygen in reactor, whole pressure leaching process, control temperature remains on 150 ~ 160 DEG C, and leaching oxygen partial pressure is 0.25 ~ 0.30Mpa, and the reaction times is 6 ~ 7h.
5th step, raw material is shunted: the raw material of pressure leaching is carried out solid-liquid separation, obtains pressure leaching slag and pressureleaching solution, iron content in pressure leaching slag, pressureleaching solution contains cobalt ion; Pressure leaching slag is paid outward and is entered other technical process, and pressureleaching solution is partly recycled to the first step for liquid before alternative copper sulfate configuration, and all the other enter the successive refinements technique of cobalt.
Beneficial effect of the present invention is: by the research and experiment of the normal pressure to rich cobalt matte, pressure leaching, pressurization iron removal technology, determine unique normal pressure leaching-pressure leaching, deferrization process flow process, nickel, the cobalt rate of recovery >=99% after process, achieve the object improving the cobalt rate of recovery.Researched and developed the technology that pressure leaching carries out with pressurization deironing simultaneously, used pure oxygen to make oxygenant, the solution iron content < 0.5g/l after leaching in process, avoiding nickel production system iron purification load increases.By to reinforced continous-stable to the temperature controlled influence research of autoclave and test, implement single tank pulp and control evenly reinforced pulp, can realize still temperature control and stablize, leach liquor and leached mud index reach re-set target.
Accompanying drawing explanation
Fig. 1 is present invention process schema.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.Table 1 is the typical composition of rich cobalt matte in following embodiment.
Embodiment 1.
Described embodiment is experiment metering, chooses rich cobalt matte material and is about 250g.
A kind of rich cobalt matte pressure leaching nickel cobalt, method for removing iron, described method comprises the steps:
The first step, front liquid preparation: by distilled water, sulphuric acid soln, copper-bath, be uniformly mixed, make sulfuric acid concentration in solution reach 25g/l, copper ion concentration reaches 10g/l.
Second, material pulp: liquid before preparing and rich cobalt matte mixing of materials are reacted; Control pulp liquid-solid ratio 12:1, slurrying temperature is 40 DEG C, and slurry time is 1.
3rd step, normal pressure leaching: pour the material after pulp into normal pressure leaching pond, passed into by high-pressure air and leach pond, whole leaching process, control temperature remains on 75 DEG C, time 4h; Treat that slurry pH value reaches between 2.5.
4th step, pressure leaching: pour the solution after normal pressure leaching process into compressive reaction still, pass into purity oxygen in reactor, whole pressure leaching process, control temperature remains on 150 DEG C, and leaching oxygen partial pressure is 0.25Mpa, and the reaction times is 6h.
5th step, raw material is shunted: the raw material of pressure leaching is carried out solid-liquid separation, obtains pressure leaching slag and pressureleaching solution, iron content in pressure leaching slag, pressureleaching solution contains cobalt ion; Pressure leaching slag is paid outward and is entered other technical process, and pressureleaching solution is partly recycled to the first step for liquid before alternative copper sulfate configuration, and all the other enter the successive refinements technique of cobalt.
Form 2, form 3 are embodiment 1 experimental result.
Embodiment 2.
Described embodiment is experiment metering, chooses rich cobalt matte material and is about 2.5kg.
A kind of rich cobalt matte pressure leaching nickel cobalt, method for removing iron, described method comprises the steps:
The first step, front liquid preparation: by distilled water, sulphuric acid soln, copper-bath, be uniformly mixed, make sulfuric acid concentration in solution reach 35g/l, copper ion concentration reaches 13g/l.
Second, material pulp: liquid before preparing and rich cobalt matte mixing of materials are reacted; Control pulp liquid-solid ratio 12.5:1, slurrying temperature is 45 DEG C, and slurry time is 1.5h.
3rd step, normal pressure leaching: pour the material after pulp into normal pressure leaching pond, passed into by high-pressure air and leach pond, whole leaching process, control temperature remains on 77 DEG C, time 4.5h; Treat that slurry pH value reaches between 2.8.
4th step, pressure leaching: pour the solution after normal pressure leaching process into compressive reaction still, pass into purity oxygen in reactor, whole pressure leaching process, control temperature remains on 155 DEG C, and leaching oxygen partial pressure is 0.26Mpa, and the reaction times is 6.5h.
5th step, raw material is shunted: the raw material of pressure leaching is carried out solid-liquid separation, obtains pressure leaching slag and pressureleaching solution, iron content in pressure leaching slag, pressureleaching solution contains cobalt ion; Pressure leaching slag is paid outward and is entered other technical process, and pressureleaching solution is partly recycled to the first step for liquid before alternative copper sulfate configuration, and all the other enter the successive refinements technique of cobalt.
Form 4, form 5 are embodiment 2 experimental result.
Embodiment 3.
Described embodiment is industrial production metering, chooses rich cobalt matte material and is about 380kg.
A kind of rich cobalt matte pressure leaching nickel cobalt, method for removing iron, described method comprises the steps:
The first step, front liquid preparation: by distilled water, sulphuric acid soln, copper-bath, be uniformly mixed, make sulfuric acid concentration in solution reach 40g/l, copper ion concentration reaches 15g/l.
Second, material pulp: liquid before preparing and rich cobalt matte mixing of materials are reacted; Control pulp liquid-solid ratio 13:1, slurrying temperature is 50 DEG C, and slurry time is 2h.
3rd step, normal pressure leaching: pour the material after pulp into normal pressure leaching pond, passed into by high-pressure air and leach pond, whole leaching process, control temperature remains on 80 DEG C, time 5h; Treat that slurry pH value reaches between 3.0.
4th step, pressure leaching: pour the solution after normal pressure leaching process into compressive reaction still, pass into purity oxygen in reactor, whole pressure leaching process, control temperature remains on 160 DEG C, and leaching oxygen partial pressure is 0.30Mpa, and the reaction times is 7h.
5th step, raw material is shunted: the raw material of pressure leaching is carried out solid-liquid separation, obtains pressure leaching slag and pressureleaching solution, iron content in pressure leaching slag, pressureleaching solution contains cobalt ion; Pressure leaching slag is paid outward and is entered other technical process, and pressureleaching solution is partly recycled to the first step for liquid before alternative copper sulfate configuration, and all the other enter the successive refinements technique of cobalt.
Claims (1)
1. rich cobalt matte pressure leaching nickel cobalt, a method for removing iron, it is characterized in that, described method comprises the steps:
The first step, front liquid preparation: by distilled water, sulphuric acid soln, copper-bath, be uniformly mixed, make sulfuric acid concentration in solution reach 25 ~ 40g/l, copper ion concentration reaches 10 ~ 15g/l;
Second, material pulp: liquid before preparing and rich cobalt matte mixing of materials are reacted; Control pulp liquid-solid ratio 12 ~ 13:1, slurrying temperature is 40 ~ 50 DEG C, and slurry time is 1 ~ 2h;
3rd step, normal pressure leaching: pour the material after pulp into normal pressure leaching pond, passed into by high-pressure air and leach pond, whole leaching process, control temperature remains on 75 ~ 80 DEG C, time 4 ~ 5h; Treat that slurry pH value reaches between 2.5 ~ 3.0;
4th step, pressure leaching: pour the solution after normal pressure leaching process into compressive reaction still, pass into purity oxygen in reactor, whole pressure leaching process, control temperature remains on 150 ~ 160 DEG C, and leaching oxygen partial pressure is 0.25 ~ 0.30Mpa, and the reaction times is 6 ~ 7h;
5th step, raw material is shunted: the raw material of pressure leaching is carried out solid-liquid separation, obtains pressure leaching slag and pressureleaching solution, iron content in pressure leaching slag, pressureleaching solution contains cobalt ion; Pressure leaching slag is paid outward and is entered other technical process, and pressureleaching solution is partly recycled to the first step for liquid before alternative copper sulfate configuration, and all the other enter the successive refinements technique of cobalt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510806265.5A CN105400960A (en) | 2015-11-20 | 2015-11-20 | Method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron |
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| CN201510806265.5A CN105400960A (en) | 2015-11-20 | 2015-11-20 | Method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756002A (en) * | 2017-01-12 | 2017-05-31 | 江苏凯力克钴业股份有限公司 | Germanic bidery metal synthetical recovery germanium, cobalt, copper, iron process |
| CN110241310A (en) * | 2019-06-18 | 2019-09-17 | 深圳市坤鹏冶金工程技术有限公司 | A kind of method of high-speed rail high-copper nickel-containing material selectivity oxygen leaching enriching noble metals |
| CN113430386A (en) * | 2021-05-31 | 2021-09-24 | 金川集团股份有限公司 | Method for enriching copper and nickel by using secondary nickel return material of copper smelting furnace slag |
| CN116004983A (en) * | 2022-12-31 | 2023-04-25 | 贵州中伟资源循环产业发展有限公司 | Leaching method of sulfide minerals |
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| GB695517A (en) * | 1950-08-11 | 1953-08-12 | Titan Co Inc | Improvements in or relating to the recovery of metallic values from iron-containing ores or concentrates |
| CN1786225A (en) * | 2005-07-09 | 2006-06-14 | 云南锡业集团有限责任公司 | Wet treatment method of iron containing nickel sulfide material |
| CN101195858A (en) * | 2007-12-20 | 2008-06-11 | 金川集团有限公司 | Method for extracting nickel with pressure leaching of non-metal high nickel sulfonium material |
| CN101550485A (en) * | 2008-04-02 | 2009-10-07 | 中国科学院过程工程研究所 | Oxidative pressure acid leaching method for processing purified waste residue in zinc hydrometallurgy process |
| CN103498052A (en) * | 2013-10-11 | 2014-01-08 | 金川集团股份有限公司 | Method for efficiently enriching rare precious metals from complex low-grade heat filter residues |
| CN104762493A (en) * | 2014-12-31 | 2015-07-08 | 金川集团股份有限公司 | Method for treating laterite nickel ore through combination of normal-pressure acid leaching and medium-pressure leaching |
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Patent Citations (6)
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| GB695517A (en) * | 1950-08-11 | 1953-08-12 | Titan Co Inc | Improvements in or relating to the recovery of metallic values from iron-containing ores or concentrates |
| CN1786225A (en) * | 2005-07-09 | 2006-06-14 | 云南锡业集团有限责任公司 | Wet treatment method of iron containing nickel sulfide material |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106756002A (en) * | 2017-01-12 | 2017-05-31 | 江苏凯力克钴业股份有限公司 | Germanic bidery metal synthetical recovery germanium, cobalt, copper, iron process |
| CN110241310A (en) * | 2019-06-18 | 2019-09-17 | 深圳市坤鹏冶金工程技术有限公司 | A kind of method of high-speed rail high-copper nickel-containing material selectivity oxygen leaching enriching noble metals |
| WO2020253733A1 (en) * | 2019-06-18 | 2020-12-24 | 深圳市坤鹏冶金工程技术有限公司 | Method for selective oxygen pressure leaching of precious metal enrichment using nickeliferous material with high iron and copper contents |
| CN110241310B (en) * | 2019-06-18 | 2021-10-01 | 深圳市坤鹏冶金工程技术有限公司 | Method for enriching noble metals by selective oxygen pressure leaching of high-iron high-copper nickel-containing material |
| CN113430386A (en) * | 2021-05-31 | 2021-09-24 | 金川集团股份有限公司 | Method for enriching copper and nickel by using secondary nickel return material of copper smelting furnace slag |
| CN116004983A (en) * | 2022-12-31 | 2023-04-25 | 贵州中伟资源循环产业发展有限公司 | Leaching method of sulfide minerals |
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Application publication date: 20160316 |
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