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Tellurium Extraction From Copper Electrorefining Slimes Patent Us

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  • US5939042A Tellurium extraction from copper

    Us5939042a Tellurium Extraction From Copper

    U.S. Pat No. 2,981,595 teaches a process for recovering tellurium from anode slimes produced during copper electrorefining. The process comprises digesting the

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  • US5271909A Method of tellurium separation from

    Us5271909a Method Of Tellurium Separation From

    US5271909A - Method of tellurium separation from copper electrorefining slime - Google Patents. A method of increasing the extraction of tellurium from

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  • Tellurium extraction from copper electrorefining slimes

    Tellurium Extraction From Copper Electrorefining Slimes

    17 rows Jul 27, 1998 U.S. Pat. No. 5,160,588 teaches a process for removing tellurium from copper slimes, wherein ...

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  • EP0528361A1 Improved method of tellurium

    Ep0528361a1 Improved Method Of Tellurium

    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...

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  • Improved tellurium extraction from copper

    Improved 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/SeS 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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  • Method of tellurium separation from copper electrorefining

    Method Of Tellurium Separation From Copper Electrorefining

    Jul 09, 1992 1. A method of increasing the extraction of tellurium from copper electrorefining slime comprising a) leaching the slime with dilute sulphuric acid in a reactor under an oxygen partial 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 in the slime are dissolved, thereby

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  • US2981595A Recovery of tellurium Google Patents

    Us2981595a Recovery Of Tellurium Google Patents

    That is, in a process for recovery of selenium from anode slimes, anode slimes were mixed with a stoichiometric amount of sodium carbonate and

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  • Pierre Claessens Inventions Patents and Patent

    Pierre Claessens Inventions Patents And Patent

    Patent number 5939042 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/SeS at a value of about 2 or less in the slimes during leaching thereof in an autoclave.

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  • Pierre L Claessens Inventions Patents and Patent

    Pierre L Claessens Inventions Patents And Patent

    Jul 09, 1992 Method of tellurium separation from copper electrorefining slime Patent number 5271909 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

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  • CA1279196C Process for purifying silver refinery

    Ca1279196c Process For Purifying Silver Refinery

    A B S T R A C T Gold sand resulting from the nitric acid treat-ment of silver refinery slimes is purified by washing with hydrochloric acid under controlled operating conditions. Platinum and other precious metals and impurities are selectively separated from the gold sand leaving a gold sand which is more efficiently refined.

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  • Pierre L Claessens Inventions Patents and Patent

    Pierre L Claessens Inventions Patents And Patent

    Jul 09, 1992 Method of tellurium separation from copper electrorefining slime Patent number 5271909 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 ...

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  • Tellurium from Copper Anode Slime to High Purity Product

    Tellurium From Copper Anode Slime To High Purity Product

    Oct 06, 2020 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

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  • Selective Separation and Recovery of Tellurium from Copper

    Selective Separation And Recovery Of Tellurium From Copper

    Nov 24, 2021 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

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  • Method of extracting Te and bismuth oxide and recovering

    Method Of Extracting Te And Bismuth Oxide And Recovering

    United States Patent 8277772 ... Tellurium extraction from copper electrorefining slimes 1999-08-17 Stafiej et al. ... There have been various reports and patents concerning extracting tellurium from tetradymites or other Te-containing raw materials with wet process, and lots of works have been done by the experts. ...

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  • PDF The Evolving CopperTellurium Byproduct System A

    Pdf The Evolving Coppertellurium Byproduct System A

    likely the bigges t confounding f actor is the lack of US tellurium . production af ter 1975 26. ... patents, and theoretical ... extraction from copper electrorefining slimes, United .

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  • Recovering selenium and tellurium from copper refinery slimes

    Recovering Selenium And Tellurium From Copper Refinery Slimes

    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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  • Extraction of tellurium from lead and copper bearing feed

    Extraction Of Tellurium From Lead And Copper Bearing Feed

    Jan 01, 2018 Hoffmann (1989) noted that tellurium in anode slimes is present as intermetallic compound of copper, silver and gold such as Cu 2 Te and (Ag, Au)Te 2 with tellurium concentration of 210%. Shibasaki et al., 1992, Knockaert, 2005 report typical concentrations of tellurium in the copper anode slimes from different producers .

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  • Pelletizing sulfation of anode slimes The International

    Pelletizing Sulfation Of Anode Slimes The International

    United States Patent 4272493 . Abstract 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

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  • US Patent for Treatment of high nickel slimes Patent

    Us Patent For Treatment Of High Nickel Slimes Patent

    Feb 26, 1991 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 423510

    Patents In Class 423510

    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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  • Selenium and Tellurium from Copper Refinery Slimes and

    Selenium And Tellurium From Copper Refinery Slimes And

    About 90% of current Te supply is from anode slimes produced during the electrolytic refining (electrorefining) of smelted copper 6,54,55, 57, making an accurate representation of copper ...

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  • Copper Refining Electrolyte and Slime Processing

    Copper Refining Electrolyte And Slime Processing

    Copper electro-refining (Cu-ER) is the principal method for producing 70% of high or 99.97% pure copper cathodes from 97-99% pure blister/fire refined-scrap copper anodes. While the inert and most of less soluble impurities settle as anode slime/sludge, other soluble impurities, particularly the metalloids (group VA/15 elements or Q As, Sb and Bi) and some transition

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  • Electrorefining an overview ScienceDirect Topics

    Electrorefining An Overview Sciencedirect Topics

    These have a pure copper cathode, on which copper is deposited (Eq. 13.20), and a lead anode, rather than the copper anode used in electrorefining. The lead anode reforms sulfuric acid from the hydrogen ions released from water, instead of contributing dissolved lead to the electrolyte (

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  • Treatment of anode slimes in a top blown rotary converter

    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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  • Sulfiding Patents and Patent Applications Class 42337

    Sulfiding Patents And Patent Applications Class 42337

    Jun 23, 2016 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 ...

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  • Recovery of tellurium from high telluriumbearing

    Recovery Of Tellurium From High Telluriumbearing

    Jul 01, 2013 The primary source of tellurium is from anode slime produced during the electrolytic refining of copper. Treatment of 1000 tons of copper ore typically yields about 1 kg of tellurium.Tellurium is produced mainly in the United States, Peru, Japan, Russia and Canada (Addicks, 2008).Global tellurium production is difficult to determine because not all

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  • Sequential removal of selenium and tellurium from copper

    Sequential Removal Of Selenium And Tellurium From Copper

    Apr 01, 2015 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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  • A system dynamics model of tellurium availability for CdTe

    A System Dynamics Model Of Tellurium Availability For Cdte

    Feb 15, 2013 About 90% of current Te supply is from anode slimes produced during the electrolytic refining (electrorefining) of smelted copper 6, 54, 55, 57, making an accurate representation of copper production crucial to the analysis of Te availability. However, copper reserves and production form the subject of a wide debate and assumptions on copper ...

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  • Bacterial recovery and recycling of tellurium from

    Bacterial Recovery And Recycling Of Tellurium From

    Aug 30, 2014 EPR3 for recovery of tellurium from devices and autoclave slime. Normally an effluent from copper and tellurium production, autoclave slime is a potential source for tellurium recovery using bacteria. To evaluate EPR3s interaction with the slime, a similar set of experiments to metallic tellurium and tellurium dioxide were performed.

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  • The perculiarities of tellurium behaviour in the process

    The Perculiarities Of Tellurium Behaviour In The Process

    The authors present the results of the study of tellurium behavior in the process of slime pressure oxidizing leaching, produced by copper electro refining at JSC Uralelectromed, and having complicated chemical and phase composition. There was studied the influence of temperature, oxygen partial pressure and the conditions of mass exchange in the unit on the

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  • Total Recovery of All Constituent Metals from Copper Anode

    Total Recovery Of All Constituent Metals From Copper Anode

    May 02, 2020 Abstract Copper anode slimes, the by-product of the copper electrorefining process, have been the subject of extensive investigation for recovering precious metals viz., Au, Ag, Pt and Pd, in addition to being the main source of rare/energy-critical elements such as Se and Te. There have been various approaches aiming at the development of extraction

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  • electrostatic gold recovery

    Electrostatic Gold Recovery

    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

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  • copper concentrate raymond roller mill

    Copper Concentrate Raymond Roller Mill

    Dec 17, 2020 tellurium extraction from copper electrorefining slimes patent us used copper ore crusher plant price india copper wire paper machine germany barry hodgkinson konkola copper mines plc perfect designed copper mining processing copper processing machinery in turkey copper wear defective copper smelting process diagram solution for ore

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  • Leaching behavior of metals from copper anode slime

    Leaching Behavior Of Metals From Copper Anode Slime

    Oct 01, 2015 1. Introduction. Copper anode slimes are the by-products in copper electrorefining which are periodically collected from the deposition cells and processed for the recovery of metal values such as Cu, Ni, Pb, Sb, Sn, Se, Te, Au, Ag and Pt (Liu et al., 2014).Some pretreatment technologies such as sulfation roasting-leaching, oxidative sulfuric

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  • US Patent for Method of recovering gold powder Patent

    Us Patent For Method Of Recovering Gold Powder Patent

    May 23, 1997 A method comprising the steps of solvent extracting a gold bearing chlorination leach solution with DBC, scrubbing the resulting gold bearing organic phase with hydrochloric acid and reducing gold is capable of recovering gold in high purity by(1) adjusting the concentration of hydrochloric acid in the gold bearing chlorination leach solution to 0.5-1.75 N before the

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