GB2583628A - Process for the recovery of copper and cobalt from a material sample - Google Patents

Process for the recovery of copper and cobalt from a material sample Download PDF

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Publication number
GB2583628A
GB2583628A GB2010538.3A GB202010538A GB2583628A GB 2583628 A GB2583628 A GB 2583628A GB 202010538 A GB202010538 A GB 202010538A GB 2583628 A GB2583628 A GB 2583628A
Authority
GB
United Kingdom
Prior art keywords
copper
solution
iron
material sample
cobalt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB2010538.3A
Other versions
GB202010538D0 (en
GB2583628B (en
GB2583628B8 (en
Inventor
Stephen Rainford Hara Yotamu
Douglas Musowoya Mazui
Kaluba Golden
Machona Jimmy
Chama Peter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anglo African Services Ltd
Copperbelt Univ
Original Assignee
Anglo African Services Ltd
Copperbelt Univ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anglo African Services Ltd, Copperbelt Univ filed Critical Anglo African Services Ltd
Priority to GB2108560.0A priority Critical patent/GB2596651B/en
Publication of GB202010538D0 publication Critical patent/GB202010538D0/en
Publication of GB2583628A publication Critical patent/GB2583628A/en
Publication of GB2583628B publication Critical patent/GB2583628B/en
Application granted granted Critical
Publication of GB2583628B8 publication Critical patent/GB2583628B8/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0065—Leaching or slurrying
    • C22B15/0067—Leaching or slurrying with 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
    • C22B15/00—Obtaining copper
    • C22B15/0002—Preliminary treatment
    • C22B15/001—Preliminary treatment with modification of the copper constituent
    • C22B15/0013—Preliminary treatment with modification of the copper constituent by roasting
    • C22B15/0017—Sulfating or sulfiding roasting
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0065—Leaching or slurrying
    • 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
    • C22B15/00—Obtaining copper
    • C22B15/0063—Hydrometallurgy
    • C22B15/0084—Treating solutions
    • 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
    • C22B23/005—Preliminary treatment of ores, e.g. by roasting or by the Krupp-Renn process
    • 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
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention provides a process for recovering copper (Cu) and cobalt (Co) from a copper–cobalt containing material sample, and which is adapted for treating both low and high grades of copper–cobalt source material, such as Cu-Co slag, Cu-Co low grade ores, Cu-Co high grade ores / concentrates, Cu-Co tailings and Cu ores. The process is characterised therein that recovery is achieved through electro-cementation. It comprises the steps of (i) leaching the material sample in an acidic pH; (ii) separating waste material solids through solid/liquid separation to recover a solution containing copper, cobalt and iron (Fe); (iii) recovering copper from solution through electro-cementation such that copper is electro-cemented onto a mild steel plate anode and cathode, leaving a solution containing cobalt and iron; (iv) recovering iron from the solution through precipitation as iron oxide; and (v) recovering cobalt from the solution through precipitation.

Claims (18)

1. A process for recovering copper (Cu) from a copper containing source material sample, the process being characterised therein that recovery is achieved through electro-cementation, the process comprising the steps of - leaching the material sample in an acidic pH; separating waste material solids through solid/liquid separation to recover a solution containing copper and iron (Fe); and recovering copper from solution through electro-cementation such that copper is electro-cemented onto a mild steel plate anode and cathode, leaving a solution containing iron.
2. The process according to claim 1 wherein the material sample is leached in water in order to solubilise metal sulphates / chlorides / nitrates while the pH of the solution may be adjusted according to iron content of the material sample by using ammonia hydroxide in order to reduce the presence of iron in solution.
3. The process according to claim 1 wherein the electro-cementation is undertaken in the presence of a catalyst.
4. The process according to claim 3 wherein about one millilitre (1 ml) of a catalyst is added per 200 grams of the material sample.
5. The process according to claim 3 wherein the catalyst is a solution selected from the group consisting of sodium nitrate (NaN03), potassium hydroxide (KOH), hydrochloric acid (HCI), nitric acid (HNO3), hydrogen peroxide (H2O2) and/or oxalic acid (C2H2O4).
6. The process according to claim 1 wherein the electro-cemented copper is recovered as copper flakes, which is filtered out of solution and which may subsequently be dried and melted .
7. A process for recovering copper (Cu) and cobalt (Co) from a copper-cobalt containing material sample, the process being characterised therein that recovery is achieved through electro-cementation, the process comprising the steps of - leaching the material sample in an acidic pH; separating waste material solids through solid/liquid separation to recover a solution containing copper, cobalt and iron (Fe); recovering copper from solution through electro-cementation such that copper is electro-cemented onto a mild steel plate anode and cathode, leaving a solution containing cobalt and iron; recovering iron from the solution through precipitation as iron oxide; and recovering cobalt from the solution through precipitation.
8. The process according to claim 7 wherein the iron is precipitated out of solution at a pH of less than 7.
9. The process according to claim 7 wherein the iron precipitation is undertaken either in a single stage or in two stages, the decision of which depending on the initial iron concentration in the solution .
10. The process according to claim 7 wherein the iron is precipitated by using ammonia ((NH3)2S04), calcium oxide (CaO) and/or sodium carbonate (Na2C03).
11. The process according to claim 7 wherein the cobalt in the solution is precipitated as a sulphide by using sodium sulphide (Na2S), calcium oxide (CaO), sodium carbonate (Na2C03) and/or sodium isobutyl xanthate, or SIBX (C4H9NaOS2).
12. The process according to either one of claims 1 or 7 wherein the process includes the additional steps of - first crushing and/or grinding the source material sample; mixing the ground sample with sulphuric acid (H2SO4), hydrochloric acid (HCI), nitric acid (HNO3) or a mixture of any two or three thereof; and then baking or roasting the ground sample in air to form metal sulphates, chlorides and/or nitrates.
13. The process according to claim 12 wherein the process includes the step of alternatively or additionally roasting the material sample with sodium hydrogen sulphate (NaHS04).
14. The process according to claim 13 wherein the material sample is roasted with sodium hydrogen sulphate at a temperature of between approximately 300 degrees Celcius and 700 degrees Celcius .
15. The process according to claim 14 wherein the material sample is roasted with a mixture of sodium hydrogen sulphate and sulphuric acid so as to prevent iron from dissolving into solution during the leaching stage, minimising sintering of the sample during roasting, and optionally bypassing the iron precipitation step.
16. The process according to either one of claims 1 or 7 wherein the process is adapted for treating low and high grades of copper-cobalt source material and wherein the source material sample is Cu-Co slag, Cu-Co low grade ores, Cu- Co high grade ores / concentrates, Cu-Co tailings and Cu ores.
17. A process for recovering copper from a copper containing material sample, the process comprising the steps of - crushing and/or grinding the material sample; mixing the ground sample with sodium hydrogen sulphate (NaHS04); roasting the ground sample in air to form metal sulphates; leaching the material sample in an acidic pH; separating waste material solids through solid/liquid separation to recover a solution containing copper and iron; doing solvent extraction to increase the presence of copper in solution; and recovering the copper through electro-winning.
18. A process for recovering copper and cobalt from a copper-cobalt containing material sample, the process comprising the steps of - crushing and/or grinding the material sample; mixing the ground sample with sodium hydrogen sulphate; roasting the ground sample in air to form metal sulphates; leaching the material sample in an acidic pH; separating waste material solids through solid/liquid separation to recover a solution containing copper and iron; doing solvent extraction to increase the presence of copper in solution; recovering the copper through electro-winning; and recovering the cobalt through electro-winning.
GB2010538.3A 2018-01-10 2019-01-08 Process for the recovery of copper and cobalt from a material sample Active GB2583628B8 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2108560.0A GB2596651B (en) 2018-01-10 2019-01-08 Process for the recovery of copper and cobalt from a material sample

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA201800172 2018-01-10
PCT/IB2019/050117 WO2019138316A1 (en) 2018-01-10 2019-01-08 Process for the recovery of copper and cobalt from a material sample

Publications (4)

Publication Number Publication Date
GB202010538D0 GB202010538D0 (en) 2020-08-26
GB2583628A true GB2583628A (en) 2020-11-04
GB2583628B GB2583628B (en) 2021-10-13
GB2583628B8 GB2583628B8 (en) 2021-12-15

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
GB2108560.0A Active GB2596651B (en) 2018-01-10 2019-01-08 Process for the recovery of copper and cobalt from a material sample
GB2010538.3A Active GB2583628B8 (en) 2018-01-10 2019-01-08 Process for the recovery of copper and cobalt from a material sample

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB2108560.0A Active GB2596651B (en) 2018-01-10 2019-01-08 Process for the recovery of copper and cobalt from a material sample

Country Status (3)

Country Link
GB (2) GB2596651B (en)
WO (1) WO2019138316A1 (en)
ZA (2) ZA202004244B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110565120B (en) * 2019-10-18 2021-09-07 东北大学 Method for removing and recovering copper from copper-containing iron liquid
CN111057837B (en) * 2020-01-16 2021-08-10 衢州华友钴新材料有限公司 Low-temperature roasting treatment method for cobalt hydrometallurgy waste residues

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1533741A (en) * 1924-06-13 1925-04-14 Bethlehem Steel Corp Metallurgical process
GB1362601A (en) * 1971-01-25 1974-08-07 Copper Process Ltd Electrolytic recovery of copper
CN106834696A (en) * 2017-01-14 2017-06-13 六盘水中联工贸实业有限公司 The comprehensive recovering process of valuable metal in a kind of copper-cadmium slag

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1533741A (en) * 1924-06-13 1925-04-14 Bethlehem Steel Corp Metallurgical process
GB1362601A (en) * 1971-01-25 1974-08-07 Copper Process Ltd Electrolytic recovery of copper
CN106834696A (en) * 2017-01-14 2017-06-13 六盘水中联工贸实业有限公司 The comprehensive recovering process of valuable metal in a kind of copper-cadmium slag

Also Published As

Publication number Publication date
ZA202104526B (en) 2022-09-28
GB2596651B (en) 2022-07-27
GB202010538D0 (en) 2020-08-26
ZA202004244B (en) 2022-09-28
GB2583628B (en) 2021-10-13
GB202108560D0 (en) 2021-07-28
WO2019138316A1 (en) 2019-07-18
GB2596651A (en) 2022-01-05
GB2583628B8 (en) 2021-12-15

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