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WO2003080879A1 - Processus de recuperation d'or et d'argent a partir de briques refractaires usagees - Google Patents

Processus de recuperation d'or et d'argent a partir de briques refractaires usagees Download PDF

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Publication number
WO2003080879A1
WO2003080879A1 PCT/IN2002/000069 IN0200069W WO03080879A1 WO 2003080879 A1 WO2003080879 A1 WO 2003080879A1 IN 0200069 W IN0200069 W IN 0200069W WO 03080879 A1 WO03080879 A1 WO 03080879A1
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WO
WIPO (PCT)
Prior art keywords
gold
silver
leaching
range
hrs
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.)
Ceased
Application number
PCT/IN2002/000069
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English (en)
Inventor
Daita Sree Ramachandra Murthy
Vinod Kumar
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.)
Council of Scientific and Industrial Research CSIR
Original Assignee
Council of Scientific and Industrial Research CSIR
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 Council of Scientific and Industrial Research CSIR filed Critical Council of Scientific and Industrial Research CSIR
Priority to PCT/IN2002/000069 priority Critical patent/WO2003080879A1/fr
Priority to AU2002246310A priority patent/AU2002246310A1/en
Publication of WO2003080879A1 publication Critical patent/WO2003080879A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C22B11/00—Obtaining noble metals
    • C22B11/04—Obtaining noble metals by wet processes
    • C22B11/042—Recovery of noble metals from waste materials
    • 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
    • C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline 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
    • 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
    • C22B3/12—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions
    • C22B3/14—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic alkaline solutions containing ammonia or ammonium salts
    • 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
    • C22B7/008—Wet processes by an alkaline or ammoniacal 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

Definitions

  • the present invention relates to a process for the recovery of gold and silver from used refractory bricks. More particularly, the present invention relates to a process for the recovery of gold and silver from the used refractory bricks of Dore bricks of Dore furnace. The invention also relates to a process for the recovery of gold and silver from the used refractory bricks generated during the processing of the anode slimes of copper industry, through a non-cyanide route. The invention will be useful for gold producing, gold refining and copper producing industries. Background of the invention
  • the -main object of the present invention is to provide a process for the recovery of gold and silver from the used refractory bricks of the Dore furnace, which obviates the drawbacks as detailed above.
  • Another object of the present invention is to provide a process for the recovery of gold and silver from the used refractory bricks of the Dore furnace generated during the processing of the anode of copper industry through a non-cyanide route.
  • the present invention provides a process for the recovery of gold and silver from the used refractory brick of the Due furnace which comprises. (i) grinding used refractory bricks of the Dore furnace generated during the processing of the anode slimes of copper industry or from gold production plants to 80% to 200 mesh size ( ⁇ ) roasting the ground refractory brick powder along with sodium chloride as an additive at a temperature in the range of 400 - 900°C
  • the ratio of the Dore furnace brick powder to the leachant used is in the range of 1 :3 to 1:10.
  • the sodium thiosulphate used for the leaching of silver has a concentration ranging between 5 g/1 to 70 g/1.
  • the thiourea solution used for leaching the gold has a concentration ranging between 0.05 M to 2.0 M.
  • the activated charcoal employed is selected from wood charcoal and coconut charcoal and used is in an amount in the range of 0.25 g/1 to 10 g/1 of the thiourea leach liquor.
  • the amount of ammonium sulphate employed to leach out the gangue constituents is in the range of 20 g/1 to 100 g/1.
  • the amount of ferric sulphate used along with thiourea during the leaching in the range of 0.5 g/1 to 10 g/1.
  • the process of present invention involves in solubilizing the silver and gold from the used Dore furnace bricks with the help of two non-cyanide lixiviants such as sodium thiosulphate and thiourea respectively.
  • the silver is precipitated from the thosulphate leached solution as silver sulphide and then converted to metallic silver by heating.
  • the gold dissolved in the thiourea solution is adsorbed onto activated charcoal.
  • the loaded carbon after incineration is smelted along with the metallized silver obtained from thiosulphate leaching to get gold-silver bullion. From the mixed bullion, gold and silver are separated by parting.
  • the process gives a recovery of 94% of gold and 96% of silver from the used refractory bricks of the Dore furnace.
  • the novelty of the present invention is recovering gold and silver from the used refractory bricks of the Dore furnace with the help of environmentally safe reagents.
  • the leach residue left after sodium thiosulphates leaching was further leached with ammonium sulphate solution having a concentration of 50 g/1 at a temperature of 60°C for 5 hrs to leach out the unwanted gangue constituents and after solid - liquid separation by filtration, the leach, residue was subjected to leaching ith acidic thiourea solution of 0.1 M concentration in presence of ferric sulphate (2.5 g/1) at a pH of around 1.5, for 4 hrs.
  • the solids and the thiourea leach liquor were separated by filtration and the leach liquor was mixed with 2.5 g s.
  • activiated charcoal and agitated for 2 hrs in order to adsorb the gold the activated charcoal.
  • the activated charcoal loaded with gold was separated by filtration and was incinerated at 800°C for 2 hrs and smelted along with the metallic silver obtained from the thiousulphate leaching and a gold - silver bullion was obtained.
  • the leach residue left after sodium thiosulphate leaching was further leached with ammonium sulphate solution having a concentration of 50 g/1 at a temperature of 60°C for 5 hrs to leach out the unwanted gangue constituents and after solid - liquor separation by filtration.
  • the leach residue was subjected to leaching with acidic thiourea solution of 0.2 M concentration in presence of ferric sulphate (2.5 g/1) at a pH of around 1.5, for 4 hrs.
  • the solids and the thiourea leach liquor were separated by filtration and the leach liquor was mixed with 5 gms.
  • activated charcoal and agitated for 2 hrs. in order to adsorb the gold onto the activities charcoal.
  • the activated charcoal loaded with gold was separated by filtration and was incinerated at 800°C for 2 hrs and smelted along with the metallic silver obtained from the thiosulphate leaching and a gold - silver bullion was obtained.
  • EXAMPLE 3 lOOOgms of the used Dore furnace refractory brick powder having the same composition was roasted at 750°C in presence of 150 gms of sodium chloride as the additive for 2 hrs. in a muffle furnace, and then leached with sodium thiousluphate solution having a concentration of 40 g/1 in presence of ammonia at a temperature of 70°C for 7 hrs. After leaching, the solids and liquid were separated by filtration and from the leach liquor, silver was precipitated as silver sulphide and then converted to metallic silvery by heating at 750°C.
  • the leach residue left after sodium thiosulphate leaching was further leached with ammonium sulphate solution having a concentration of 50 g/1 at a temperature of 60°C for 5 hrs to leach out the unwanted gangue constituents and after solid - liquid separation by filtration, the leach residue was subjected to leached with acidic thiourea solution of 0.25M concentration in presence of ferric sulphate (2.5 g/1 (at a pH of around 1.5, for 4 hrs.
  • the solids and the thiourea leach liquor were separated by filtration and the leach liquor was mixed with 10 gms. Of activated charcoal and agitated for 2 hrs. in order to adsorb the gold onto the activated charcoal.
  • the activated charcoal loaded with gold was separated by filtration and was incinerated at 800°C for 2 hrs and smelted along with the metallic silver obtained from the thiosulphate leaching and a gold - silver bullion was obtained.
  • the gold-silver bullion was parted with nitric acid and gold and silver were obtained.
  • the recoveries of gold and silver were 94% and 97% respectively.
  • the process is very safe from the environmental point of view, because it uses only non-cyanide lixiviants for the leaching of gold and silver.

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

Abstract

La présente invention concerne un processus de récupération d'or et d'argent à partir de briques réfractaires usagées de four à argent aurifère. Cette invention concerne, en particulier, un processus de récupération d'or et d'argent à partir de briques réfractaires usagées générés pendant le traitement des schlamms fins d'anode de l'industrie du cuivre, par voie non cyanure. Cette invention convient pour les branches d'industrie de production d'or, d'affinage de l'or et de production de cuivre. Ce processus consiste à lixivier la poudre réfractaire grillées avec une solution de thiosulfate de sodium ammoniacal et à lixivier le résidu solide avec une solution de sulfate d'ammonium, suivie d'une lixiviation avec une solution thio-urée acide.
PCT/IN2002/000069 2002-03-26 2002-03-26 Processus de recuperation d'or et d'argent a partir de briques refractaires usagees Ceased WO2003080879A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IN2002/000069 WO2003080879A1 (fr) 2002-03-26 2002-03-26 Processus de recuperation d'or et d'argent a partir de briques refractaires usagees
AU2002246310A AU2002246310A1 (en) 2002-03-26 2002-03-26 Process for the recovery of gold and silver from used refractory bricks

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IN2002/000069 WO2003080879A1 (fr) 2002-03-26 2002-03-26 Processus de recuperation d'or et d'argent a partir de briques refractaires usagees

Publications (1)

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WO2003080879A1 true WO2003080879A1 (fr) 2003-10-02

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AU (1) AU2002246310A1 (fr)
WO (1) WO2003080879A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7066983B2 (en) 2000-05-19 2006-06-27 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
CN100494422C (zh) * 2003-12-23 2009-06-03 王金祥 含金尾矿库浸工艺
US7544232B2 (en) 2002-11-15 2009-06-09 Placer Dome Technical Services Ltd. Method for thiosulfate leaching of precious metal-containing materials
CN103060568A (zh) * 2012-12-27 2013-04-24 福建金山黄金冶炼有限公司 从含金废弃炭末中回收金的方法
CN103320624A (zh) * 2013-07-05 2013-09-25 昆明理工大学 一种从铜阳极泥中选择性提取金银的方法
US9051625B2 (en) 2011-06-15 2015-06-09 Barrick Gold Corporation Method for recovering precious metals and copper from leach solutions
US10161016B2 (en) 2013-05-29 2018-12-25 Barrick Gold Corporation Method for pre-treatment of gold-bearing oxide ores
CN109517998A (zh) * 2018-11-24 2019-03-26 深圳市金正龙科技有限公司 固体废物中金的回收工艺
US10415116B2 (en) 2010-12-07 2019-09-17 Barrick Gold Corporation Co-current and counter current resin-in-leach in gold leaching processes
CN112251603A (zh) * 2020-09-30 2021-01-22 中国科学院过程工程研究所 一种解离氰化尾渣并同步回收其中铁、金、银的方法
WO2022245731A1 (fr) * 2021-05-17 2022-11-24 Jetti Resources, Llc Procédés de libération de métaux précieux au moyen d'un réactif comportant un groupe fonctionnel thiocarbonyle
CN115747479A (zh) * 2022-10-19 2023-03-07 西部矿业股份有限公司 一种基于火湿联合技术从高镁高硅炉砖中提取金银的工艺
US11639540B2 (en) 2019-01-21 2023-05-02 Barrick Gold Corporation Method for carbon-catalysed thiosulfate leaching of gold-bearing materials
US11859263B2 (en) 2016-10-19 2024-01-02 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US11884993B2 (en) 2015-04-17 2024-01-30 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US12247266B2 (en) 2020-09-18 2025-03-11 Jetti Resources, Llc Extraction of base metals using carbonaceous matter and a thiocarbonyl functional group reagent
US12264381B2 (en) 2020-09-18 2025-04-01 Jetti Resources, Llc Extracting base metals using a wetting agent and a thiocarbonyl functional group reagent

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113122707B (zh) * 2021-04-22 2022-11-29 昆明理工大学 一种利用硫酸渣强化氯化焙烧回收黄金的方法

Citations (2)

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US2837406A (en) * 1955-05-05 1958-06-03 Chemical Construction Corp Hydrometallurgical process
US4404022A (en) * 1981-11-10 1983-09-13 Noranda Mines Limited Dore slag treatment

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US2837406A (en) * 1955-05-05 1958-06-03 Chemical Construction Corp Hydrometallurgical process
US4404022A (en) * 1981-11-10 1983-09-13 Noranda Mines Limited Dore slag treatment

Non-Patent Citations (2)

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Title
ED. FATHI HABASHI: "Handbook of Extractive Metallurgy", 1997, WILEY-VCH, GERMANY, XP002220010 *
MURTHY D S R ET AL: "Leaching of gold and silver from Miller Process dross through non-cyanide leachants", HYDROMETALLURGY, ELSEVIER SCIENTIFIC PUBLISHING CY. AMSTERDAM, NL, vol. 42, no. 1, 1 August 1996 (1996-08-01), pages 27 - 33, XP004040677, ISSN: 0304-386X *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7559974B2 (en) 2000-05-19 2009-07-14 Placer Dome Technical Services Ltd. Method for thiosulfate leaching of precious metal-containing materials
US7066983B2 (en) 2000-05-19 2006-06-27 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
US7544232B2 (en) 2002-11-15 2009-06-09 Placer Dome Technical Services Ltd. Method for thiosulfate leaching of precious metal-containing materials
US7722840B2 (en) 2002-11-15 2010-05-25 Placer Dome Technical Services Limited Method for thiosulfate leaching of precious metal-containing materials
CN100494422C (zh) * 2003-12-23 2009-06-03 王金祥 含金尾矿库浸工艺
US10415116B2 (en) 2010-12-07 2019-09-17 Barrick Gold Corporation Co-current and counter current resin-in-leach in gold leaching processes
US9051625B2 (en) 2011-06-15 2015-06-09 Barrick Gold Corporation Method for recovering precious metals and copper from leach solutions
CN103060568A (zh) * 2012-12-27 2013-04-24 福建金山黄金冶炼有限公司 从含金废弃炭末中回收金的方法
CN103060568B (zh) * 2012-12-27 2015-01-14 福建金山黄金冶炼有限公司 从含金废弃炭末中回收金的方法
US10597752B2 (en) 2013-05-29 2020-03-24 Barrick Gold Corporation Method for pre-treatment of gold-bearing oxide ores
US10161016B2 (en) 2013-05-29 2018-12-25 Barrick Gold Corporation Method for pre-treatment of gold-bearing oxide ores
US11401580B2 (en) 2013-05-29 2022-08-02 Barrick Gold Corporation Method for pre-treatment of gold-bearing oxide ores
CN103320624A (zh) * 2013-07-05 2013-09-25 昆明理工大学 一种从铜阳极泥中选择性提取金银的方法
US11884993B2 (en) 2015-04-17 2024-01-30 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US12049680B2 (en) 2015-04-17 2024-07-30 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US12049681B2 (en) 2015-04-17 2024-07-30 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US12416066B2 (en) 2016-10-19 2025-09-16 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
US11859263B2 (en) 2016-10-19 2024-01-02 Jetti Resources, Llc Process for leaching metal sulfides with reagents having thiocarbonyl functional groups
CN109517998A (zh) * 2018-11-24 2019-03-26 深圳市金正龙科技有限公司 固体废物中金的回收工艺
US12065714B2 (en) 2019-01-21 2024-08-20 Barrick Gold Corporation Method for carbon-catalysed thiosulfate leaching of gold-bearing materials
US11639540B2 (en) 2019-01-21 2023-05-02 Barrick Gold Corporation Method for carbon-catalysed thiosulfate leaching of gold-bearing materials
US12247266B2 (en) 2020-09-18 2025-03-11 Jetti Resources, Llc Extraction of base metals using carbonaceous matter and a thiocarbonyl functional group reagent
US12264381B2 (en) 2020-09-18 2025-04-01 Jetti Resources, Llc Extracting base metals using a wetting agent and a thiocarbonyl functional group reagent
CN112251603A (zh) * 2020-09-30 2021-01-22 中国科学院过程工程研究所 一种解离氰化尾渣并同步回收其中铁、金、银的方法
WO2022245731A1 (fr) * 2021-05-17 2022-11-24 Jetti Resources, Llc Procédés de libération de métaux précieux au moyen d'un réactif comportant un groupe fonctionnel thiocarbonyle
CN115747479A (zh) * 2022-10-19 2023-03-07 西部矿业股份有限公司 一种基于火湿联合技术从高镁高硅炉砖中提取金银的工艺

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