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Pressure leaching of decopperized copper electrorefining anode slimes in strong acid 467 leaching was conducted for two hours thereafter the autoclave was cooled down to the room temperature and the leach residue were removed for filtration and washing.
The processing of copper anode slimes is an additional economic driver for copper electrorefineries, due to the fact that slimes contain precious metals such as silver, gold and platinum group metals (PGMs) ( Pt and Pd) as well as base metals like copper, nickel, selenium, tellurium and impurity elements such as lead, antimony and bismuth.
Aug 01, 1990#0183;#32;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 characterization of slimes.
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#176;C until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry, and contacting the slurry
The anode slime is collected in the bottom of the electrolytic cells during the copper electrorefining. This slime generated during the copper refining process contains, among other base metals, costly precious metals. As previously mentioned, the blister copper, from
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, which remains
electrorefining process copper. Electrorefining an overview ScienceDirect Topics. In an electrorefining process, and lead. The value of the precious metal content recovered from firerefined copper by electrorefining is sufficient to pay for much of the cost of the electrolytic step.
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
Refining of silver and gold as products from gold mining or the smelting of copper anode slime, is often the final process of these metal production processes (Shi and Ye, 2013;Bard and Sobral, 2008).
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#176; and 200#176; C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry, and contacting the
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, the electrode reactions are, at the anode: M Mn+ + neand at the cathode: Mn+ + ne M
Combining conventional electrochemical measurements, laserbased visualization and digital image processing, the movement of anode slime, its spatial distribution and path of falling during the copper electrorefining process were investigated in a laboratory scale cell. Two types of anode slime, small agglomerates and fine particles were observed.
Electrorefining Of Copper Process. anode slime is the insoluble product deposited at the bottom of the electrorefining tank during electrorefining of coppert generally contains cu, ni, se, te, ag, au, platinum group metals pgm, pb, ba, fe, etcwing to the presence of valuable metals.
Electrorefining of Copper
9 #0183;#32;The treatment of copper scrap consisted of copper smelting and converting, copper
Copper Electrorefining . Copper is usually mined from its coal known as blister copper. It is about 98 to 99 per cent pure. However, the electrorefining process can easily make it % pure which makes it a good product to be used in electrical components. A block of impure copper is taken as an anode or positive electrode.
Jul 18, 2013#0183;#32;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), Pb, Ba, Fe, etc. Owing to the presence of valuable metals and metalloids in the anode slime, numerous approaches have been made by the researchers to extract them following pyro, pyrohydro
Copper electrorefining (CuER) is the principal method for producing gt;70% of high or % pure copper cathodes from 9799% pure blister/fire refinedscrap 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 metals (Mt) codissolved
slag, slimes etc. Electrolytic refining of copper is carried out in Jumbocells where a series of cathodes, which are made of pure copper and insoluble lead anodes rest in a steel tanks. Metallic copper is deposited at the cathodes, while the water molecules are decomposed at the anode to produce oxygen. Sulphuric acid is regenerated in the
Anode slime generated in the electrorefining process consists of the particles with different configuration, particles size and composition and it is results of the electrochemical and chemical
copper electrorefining process. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including quarry, aggregate, and different kinds of minerals. We can provide you the complete stone crushing and beneficiation also supply standalone
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