Results 111 to 120 of about 215 (159)

Mineralogical Characterization of Anode Slimes: Part 8—“Silica” in Copper Anodes and Anode Slimes

Canadian Metallurgical Quarterly, 1991
Copper anodes from the CCR, Inco and Kidd Creek refineries contain ≍ 120 ppm SiO2. The silica is present as a variety of complex silicate inclusions preferentially located within 500 pm of the uppe...
T. T. Chen, J. E. Dutrizac
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Mineralogical Characterization of Anode Slimes—II. Raw Anode Slimes from Inco's Copper Cliff Copper Refinery

Canadian Metallurgical Quarterly, 1988
AbstractThe raw anode slimes produced in Inco's Copper Cliff Copper Refinery have been characterized by a variety of mineralogical techniques. The anode slimes consist principally of euhedral NiO crystals, Ag-Cu selenides, PbSO4 and silicates as well as trace amounts of Pb-Cu-Bi oxide, Ag2Te and BaSO4. The slimes particles generally are agglomerated by
T. T. Chen, J. E. Dutrizac
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197Au Mössbauer study of copper refinery anode slimes

Metallurgical Transactions B, 1993
Copper refinery anode slimes are abundantly produced during the electrolytic refining of copper. Although the slimes contain significant and economically recoverable amounts of gold and silver, the chemical state of the gold has not been fully identified.
J.A. Sawicki, J.E. Dutrizac, J. Friedl, F.E. Wagner, T.T. Chen   +4 more
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Identification of arsenato antimonates in copper anode slimes

Hydrometallurgy, 2006
Abstract It was found that, in copper electrolyte, the combination of As(V) and Sb(V) can form arsenato antimonic acid (AAAc) and, the reactions of AAAc with As(III), Sb(III), and Bi(III) can produce the precipitates of arsenato antimonates. During copper electrorefining, the As, Sb, and Bi deposited into the anode slime from the electrolyte are ...
Wang Xue-Wen, Chen Qi-Yuan, Yin Zhou-Lan, Xiao Lian-Sheng   +3 more
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Tellurium distribution in copper anode slimes smelting

Metallurgical and Materials Transactions B, 1998
Tellurium is a common minor constituent of copper anode slimes. The distribution of tellurium between the phases during slimes smelting is an important consideration, both in terms of metal quality and the capture of the oxidized tellurium. In this work, the oxidation by oxygen at 1100 °C of a silver-copper selenide matte containing 2 pct tellurium has
D. R. Swinbourne, G. G. Barbante, A. Sheeran   +2 more
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Electrometallurgy of copper refinery anode slimes

Metallurgical Transactions B, 1990
High-selenium copper refinery anode slimes form two separate and dynamically evolving series of compounds with increasing electrolysis time. In one, silver is progressively added to non-stoichiometric copper selenides, both those originally present in the anode and those formed subsequently in the slime layer, and in the other, silver-poor copper ...
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Recovery of selenium from copper anode slimes

Metallurgical Transactions, 1971
Thermogravimetric studies were made on thin layers and spherical pellets of decopperized anode slimes. These have shown that deselenization proceeds initially by the volatilization of the free selenium content at about 360°C. At higher temperatures and under an oxidizing atmosphere, silver selenide is decomposed either directly or via the formation of ...
W. A. Dutton, A. J. Van Den Steen, N. J. Themelis   +2 more
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A study of anodic slime behaviour in the electrorefining of copper

Hydrometallurgy, 1995
Abstract The kinetics of anode slime formation and propagation were studied in a laboratory-scale copper electrorefining apparatus. Laser-based illumination and digital image processing of videotaped records of slime movement, combined with current/time monitoring and polarization experiments, provide quantitative information about the complex ...
Z.H. Gu, J. Chen, T.Z. Fahidy
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The treatment of copper refinery anode slimes

JOM, 1990
There are numerous viable approaches to the treatment of anode slimes from electrolytic copper refining. Of particular interest in the treatment of slimes are the behavior and recovery of selenium. The understanding of the process chemistry involved in the treatment of anode slimes should be aided considerably by recent work on the formation and ...
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Silver Selenide Thermodynamics for Copper Anode Slime Refining

2013
Copper anode slimes are a by-product of the electrolytic refining of anode copper, which contains significant amounts of silver, selenium, copper, and gold. Slimes are usually smelted to recover silver and gold. The thermodynamics of the smelting of such selenium-rich materials have received only little attention.
Feng, Dawei, Taskinen, Pekka
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