tElLuRIuM eXTRaCtioN FROM CoPPEr electrOReFINiNg SLiMes paTeNt us

  • US5939042A - Tellurium extraction from copper ...

    The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave. The excess of selenium and/or sulphur allows the formation of Ag 2 Se or Ag 2 S,

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  • Tellurium extraction from copper electrorefining slimes ...

    1998-7-27 · The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave.

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  • US5271909A - Method of tellurium separation from

    A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100° and 200° C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry, and contacting the ...

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  • Improved tellurium extraction from copper electrorefining ...

    The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave. The excess of selenium and/or sulphur allows the ...

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  • Pelletizing sulfation of anode slimes - The International ...

    Anode slimes from an electrorefining operation are fed, together with sulfuric acid, into a heated pelletizer wherein a sulfation reaction occurs, simultaneously with pellet formation, to solubilize copper, nickel and tellurium contained in the slimes.

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  • Extraction of tellurium from lead and copper bearing feed ...

    2018-1-1 · Nevertheless, tellurium can be recovered from copper anode slimes (US Geological Survey, 2003, Wang, 2011) which is the major source of tellurium in copper metallurgical processes. Pyrometallurgical treatments of high grade copper ore is advantageous in concentrating and recovering of gold, silver, platinum group metals (PGMs) and other metals ...

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  • Treatment of anode slimes in a top blown rotary converter ...

    In copper electrorefining, for example, such slimes are composed of gold, silver and the platinum group precious metals, compounds of selenium and tellurium, as well as other compounds as PbSO 4. Preliminary processing of anode slimes usually involves a hydrometallurgical treatment to solubilize and partially separate such elements as Cu, Te ...

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  • Selective Separation and Recovery of Tellurium from

    2021-11-24 · Tellurium is a critical metalloid element that is majorly produced from copper anode slime and is widely consumed in solar energy systems. In this research, a sustainable recovery of tellurium from copper anode slime obtained from Sarcheshmeh Copper Complex, Iran, was investigated. At first, the dissolution of tellurium and other impurities from copper anode slime

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  • US5108721A - Treatment of high nickel slimes - Google

    A two-stage process for treating anode slimes and other residues containing a substantial amount of nickel without significant dissolution of silver and/or selenium in a single autoclave is disclosed. The process comprises, in a first stage, leaching the anode slimes at 15-30% solids in dilute sulphuric acid at a pressure between 4.0 and 5.5 bars and a temperature between 155° C. to

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  • US Patent for Treatment of high nickel slimes Patent ...

    1991-2-26 · A two-stage process for treating anode slimes and other residues containing a substantial amount of nickel without significant dissolution of silver and/or selenium in a single autoclave is disclosed. The process comprises, in a first stage, leaching the anode slimes at 15-30% solids in dilute sulphuric acid at a pressure between 4.0 and 5.5 bars and a temperature

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  • Method of tellurium separation from copper

    1992-7-9 · A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100° and 200° C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry,

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  • Pierre Claessens Inventions, Patents and Patent ...

    Abstract: The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave.

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  • Extraction of tellurium from lead and copper bearing feed ...

    2018-1-1 · Nevertheless, tellurium can be recovered from copper anode slimes (US Geological Survey, 2003, Wang, 2011) which is the major source of tellurium in copper metallurgical processes. Pyrometallurgical treatments of high grade copper ore is advantageous in concentrating and recovering of gold, silver, platinum group metals (PGMs) and other metals ...

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  • Tellurium, from Copper Anode Slime to High Purity

    2020-10-6 · Tellurium is a rare metalloid that is vastly produced from copper anode slime, which is a by-product of the copper electrorefining process. Choosing the proper recovery method strongly depends on the slimes composition, mineralogy, and tellurium concentration. In addition, correctly selecting the right method of leaching, purification, and precipitation in economic and

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  • Selective Separation and Recovery of Tellurium from

    2021-11-24 · Tellurium is a critical metalloid element that is majorly produced from copper anode slime and is widely consumed in solar energy systems. In this research, a sustainable recovery of tellurium from copper anode slime obtained from Sarcheshmeh Copper Complex, Iran, was investigated. At first, the dissolution of tellurium and other impurities from copper anode slime

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  • Recovering selenium and tellurium from copper refinery

    Slimes generated by the refining of primary copper (copper produced from ores and concentrates) generally contain from 5-25% selenium and 2-10% tellurium. Selenium and tellurium are generally present in slimes as intermetallic compounds of silver, copper, and occasionally gold (e.g., Ag2 Se, CU2 Te and (Ag,Au)Te 2 ).

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  • (PDF) Tellurium; Supply and Applications

    This poster discusses the extraction and recovery of tellurium. The focus is on effective recovery from copper anode refining slimes into a functional, value added domestic supply chain.

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  • US Patent for Treatment of high nickel slimes Patent ...

    1991-2-26 · A two-stage process for treating anode slimes and other residues containing a substantial amount of nickel without significant dissolution of silver and/or selenium in a single autoclave is disclosed. The process comprises, in a first stage, leaching the anode slimes at 15-30% solids in dilute sulphuric acid at a pressure between 4.0 and 5.5 bars and a temperature

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  • Patents in Class 423/510

    US Patents/Apps Other ... Separation of tellurium by solvent extraction method A method for separating tellurium includes separating and recovering tellurium ... ferric from nickel and copper from nickel The oxine ligands 5-chloro-8-hydroxyquiniline and 5-sulfoxyl-8-hydroxyquinoline are covalently bound, ...

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  • Extraction of selenium from copper anode slimes in a ...

    2017-9-7 · A new method was proposed for extracting selenium from copper anode slimes with a low concentration of nitric acid in a sealed sulfuric acid leaching system. It is performed under an atmosphere of oxygen which allowed for a cyclic utilization of nitric acid. The effects of main parameters on selenium leaching were studied. The mineralogical characterizations of the

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  • Tellurium, from Copper Anode Slime to High Purity

    2020-10-6 · Tellurium is a rare metalloid that is vastly produced from copper anode slime, which is a by-product of the copper electrorefining process. Choosing the proper recovery method strongly depends on the slimes composition, mineralogy, and tellurium concentration. In addition, correctly selecting the right method of leaching, purification, and precipitation in economic and

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  • Pierre L. Claessens Inventions, Patents and Patent ...

    1992-7-9 · Abstract: A method of increasing the extraction of tellurium from copper electrorefining slime comprises leaching the slime with dilute sulphuric acid in a reactor under a partial oxygen pressure of up to 150 psi and at an elevated temperature between about 100.degree. and 200.degree. C. until copper, nickel and substantially all of the tellurium is dissolved, thereby

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  • Tellurium, from Copper Anode Slime to High Purity

    2020-10-9 · Tellurium is a rare metalloid that is vastly produced from copper anode slime, which is a by-product of the copper electrorefining process. Choosing the

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  • Sequential removal of selenium and tellurium from copper ...

    2015-4-1 · Approximately 90% of selenium and tellurium are obtained from anode slimes formed during the electrolytic refining of copper [1,5]. Copper anode slime is also an important raw material for recovering Au, Ag and platinum group metals. A variety of technologies for treating copper anode slimes have been developed.

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  • Tellurium Recovery during Dore ... - P Weerts Consulting

    MAIL US. Home. Rhodium Recovery. Tellurium Recovery. Dore Refining. Contact. ... in Anode Slimes produced during Copper Electrorefining. 1/1. Tellurium is an impurity in Precious Metals Concentrates : ... Controled Tellurium Extraction during Silver Refining .

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  • Recovery of Silver and Gold from Copper Anode Slimes ...

    2014-9-11 · Copper anode slimes, produced from copper electrolytic refining, are important industrial by-products containing several valuable metals, particularly silver and gold. This article provides a comprehensive overview of the development of the extraction processes for recovering silver and gold from conventional copper anode slimes. Existing processes, namely

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  • Tellurium Recovery, Mortsel | P Weerts Consulting

    In Anode Slimes produced during Copper Electrorefining. ... Copper, Lead, Silver to collect Tellurium as Telluride (Cu2Te and similar) Controled Tellurium Extraction during Silver Refining. The Silver Refining Process must be monitored in order to identify the several Refining Steps :

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  • Copper Anode Slime Recovery-Copper- - Metalcess

    Copper Anode Slime Recovery. Anode slime is a byproduct from copper or lead electro-refining process. The copper/lead anode slime usually contain As, Sb, Bi and precious metals like gold and silver. Smelter of anode slime is most likely

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  • electrostatic gold recovery - leslodges-marseille.fr

    Gold Ore Recovery By Electrostatic Method In Nigeria. Recovery tellurium us2981595 tvpdcollege tellurium extraction from copper electrorefining slimes recovery of tellurium free patents online tellurium containing tellurium - centrifugalpump co in patent us2981595 - recovery of tellurium - google patents 2 981 595 recovery or tellurium sidney b tuwiner baldwin ny assignor to phelps.

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  • Selective leaching of penalty elements from copper ...

    2016-11-1 · Former mining company, Noranda Mines Ltd., claimed virtually complete extraction of copper and at least 75% extraction of Te from anode slimes in their POX process (Morrison, 1977). Newmont Mining also claimed substantial extraction of Cu, however, claimed a lower extraction for Te (30%) in their POX process (Yannopoulos and Borham, 1978).

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