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  • 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,...

  • Cited by: 11
  • US5271909A Method of tellurium separation from copper

    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...

  • Cited by: 8
  • Copper-tellurium and Copper-sulphur, for electrical and

    Copper-tellurium – CuTeP, Copper-sulphur – CuSP. For electrical and electronic applications requiring extensive machining, copper-tellurium (CuTeP, Te: 0.4-0.7%) and copper-sulphur (CuSP, S: 0.2-0.7%), with machinability indexes of 80% and an IACS of 93-94%, are the ideal choices. They are called free machining coppers. Go to Quick Facts

  • effect of tellerium in cu electrorefining

    Patent US5939042 Tellurium extraction from copper electrorefining Aug 17, 1999 A method for extracting tellurium from copper electrorefining slimes By the action of current applied to the anode, the copper dissolves and isMore details » Get Price

  • (PDF) Tellurium; Supply and Applications

    Tellurium production is limited mainly to that obtained from the treatment of electrolyte muds from copper refineries. However, there are several other sources from which the precious metal

  • Method of tellurium separation from copper electrorefining

    21/12/1993· 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

  • Tellurium extraction from copper electrorefining slimes

    17/08/1999· Copper and lead electrorefining slimes are a major source of tellurium. Tellurium is a nuisance element that must be removed to recover precious metals from copper slimes. For the overall slime treatment process efficiency, it is important to extract as much tellurium as possible. Such extraction is typically carried out in autoclaves. Any tellurium not removed in the autoclave goes to the

  • jaw crusher tellurium

    Effect of tellerium in cu electrorefining Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Effect of tellerium in cu electrorefining, quarry, aggregate, and different kinds of minerals.

  • Electrorefining of Copper

    Electrorefining of Copper 1. Electrorefining – General Introduction In an electrorefining process, the anode is the impure metal and the impurities must be lost during the passage of the metal from the anode to the cathode during electrolysis, i.e. the electrode reactions are, at the anode: M → Mn+ + ne-and at the cathode: Mn+ + ne-→ M Electrorefining is a much more common process than

  • (PDF) Tellurium; Supply and Applications

    Anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of copper. It generally contains Cu, Ni, Se, Te, Ag, Au, platinum group metals (PGM

  • Tellurium extraction from copper electrorefining slimes

    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.sub.2 Se or Ag.sub.2 S, which

  • The mineralogical characterization of tellurium in copper

    In all the anodes, the major tellurium carrier is the Cu 2 Se-Cu 2 Te phase which occurs as a constituent of complex inclusions at the copper grain boundaries. In tellurium-rich anodes, the molar tellurium content of the Cu 2 Se-Cu 2 Te phase can exceed that of selenium. Although >85 pct of the tellurium occurs as the Cu 2 Se-Cu 2 Te phase, minor amounts are present in Cu-Pb-As-Bi-Sb oxide, Cu

  • Recovery of tellurium from high tellurium-bearing

    01/07/2013· From the constructed E h-pH diagram of the Cu–Te–Se–H 2 O system, the thermodynamic conditions of selective leaching of tellurium and selenium can be evaluated. However, the behavior of the other species was not considered in the leaching process. Thus, the heterogeneous thermodynamic equilibrium simulation is conducted based on Gibbs free energy minimization, using the Factsage

  • Method of tellurium separation from copper

    21/12/1993· 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

  • jaw crusher tellurium

    Effect of tellerium in cu electrorefining Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any size-reduction requirements including, Effect of tellerium in cu electrorefining, quarry, aggregate, and different kinds of minerals.

  • Electrorefining an overview | ScienceDirect Topics

    In the final stage of Cu production, the pure Cu (99.99% purity) is produced by electrorefining, while the precious metals are separated and recovered by hydrometallurgical processes. There are only a few companies globally whose main objective is the extraction of metals from e-waste, namely, Umicore, Noranda, Boliden, Kosaka, Kayser, and Metallo-Chimique [38] .

  • copper electrorefining equipment

    Electrorefining of Copper , Electrorefining is a much more common process than electrowinning and , Typical voltage components in a copper electrorefining cell copper electrowinning tank house and ancillary equipment calls for , cells, structure and interconnecting equipment, production cycles. electrolytic refining of copper cu perkinspreschool. Jun 29, 2018· Electrorefining of

  • The anode mud obtained during electrolytic refining of

    In electrorefining step, impurities like Fe, Ni, Zn get dissolved in the solution while Au, Ag, Se, Te and Pt are deposited as anode mud below the anode.

  • cost508 cost of copper electrorefining anode slime

    Electrorefining of Copper. Electrorefining of Copper 1. Electrorefining – General Introduction In an electrorefining process, the anode is the impure metal and the impurities must be lost during the passage of the metal from the anode to the cathode during electrolysis, i.e. the electrode reactions are, at the anode: M → Mn+ + ne-and at the cathode: Mn+ + ne-→ M

  • Method of tellurium separation from copper

    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 forming a leach slurry, and

  • Tellurium extraction from copper electrorefining slimes

    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.sub.2 Se or Ag.sub.2 S, which

  • The mineralogical characterization of tellurium in copper

    In all the anodes, the major tellurium carrier is the Cu 2 Se-Cu 2 Te phase which occurs as a constituent of complex inclusions at the copper grain boundaries. In tellurium-rich anodes, the molar tellurium content of the Cu 2 Se-Cu 2 Te phase can exceed that of selenium. Although >85 pct of the tellurium occurs as the Cu 2 Se-Cu 2 Te phase, minor amounts are present in Cu-Pb-As-Bi-Sb oxide, Cu

  • Method of tellurium separation from copper

    21/12/1993· 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

  • The mineralogical characterization of tellurium in copper

    A mineralogical study of a «normal» commercial copper anode and six tellurium-rich copper anodes from the CCR Refinery of the Noranda Copper Smelting and Refining Company was carried out to identify the tellurium carriers and their relative abundances. In all the anodes, the major tellurium carrier is the Cu 2 Se-Cu 2 Te phase which occurs as a constituent of complex inclusions at the copper

  • Minerals | Free Full-Text | Modeling the Effect of

    Favorable conditions for electrorefining processes are typically achieved by keeping both the electrolyte conductivity and diffusion coefficient of Cu(II) high, while ensuring low electrolyte viscosity. In this work the conductivity of the copper electrorefining electrolyte was investigated as a function of temperature (50–70 °C) and concentrations of copper (Cu(II), 40–60 g/L), nickel

  • Modeling of selenium and tellurium removal from copper

    To recover Te, the slag is first leached in aqua regia, to produce multimetal pregnant leach solution (PLS) with 421 ppm of Te and dominating dissolved elements Na, Ba, Bi, Cu, As, B, Fe and Pb

  • PRESSURE LEACHING OF DECOPPERIZED COPPER ELECTROREFINING

    Pressure leaching of decopperized copper electrorefining anode slimes in strong acid 469 that Sb, Ag, Ba and Pb did not dissolve during autoclave leaching. In contrast Cu, Ni and Bi were shown to have undergone a substantial level of dissolution, whereas As, Te and Se dissolved only slightly. However, the extractions of Te and Se were not

  • The anode mud obtained during electrolytic refining of

    In electrorefining step, impurities like Fe, Ni, Zn get dissolved in the solution while Au, Ag, Se, Te and Pt are deposited as anode mud below the anode.

  • cost508 cost of copper electrorefining anode slime

    Electrorefining of Copper. Electrorefining of Copper 1. Electrorefining – General Introduction In an electrorefining process, the anode is the impure metal and the impurities must be lost during the passage of the metal from the anode to the cathode during electrolysis, i.e. the electrode reactions are, at the anode: M → Mn+ + ne-and at the cathode: Mn+ + ne-→ M