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 PDF

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Publication number
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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CN
China
Prior art keywords
cobalt
leaching
pressure leaching
pressure
liquid
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Pending
Application number
CN201510806265.5A
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Chinese (zh)
Inventor
李全
丁才生
尤广宏
周通
蔺华新
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Jinchuan Group Co Ltd
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Jinchuan Group Co Ltd
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Priority to CN201510806265.5A priority Critical patent/CN105400960A/en
Publication of CN105400960A publication Critical patent/CN105400960A/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B23/00Obtaining nickel or cobalt
    • C22B23/04Obtaining nickel or cobalt by wet processes
    • C22B23/0407Leaching processes
    • C22B23/0415Leaching processes with acids or salt solutions except ammonium salts solutions
    • C22B23/043Sulfurated acids or salts thereof
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working 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
    • C22B7/006Wet processes
    • C22B7/007Wet processes by acid leaching
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working 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
    • C22B7/04Working-up slag
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

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

A kind of rich cobalt matte pressure leaching nickel cobalt, method for removing iron
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.
CN201510806265.5A 2015-11-20 2015-11-20 Method for pressurizing cobalt-rich copper matte to leach out nickel and cobalt and remove iron Pending CN105400960A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
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

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Publication number Priority date Publication date Assignee Title
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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

Cited By (5)

* Cited by examiner, † Cited by third party
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

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Application publication date: 20160316