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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…
Jun 12, 2015· Electrolytic Cells for Copper Electrorefining or Electrowinning. Anode Slime Recovery From Weee Process - Buy Weee Process . Anode Slime Recovery From Weee Process, Find Complete Details about Anode Slime Recovery From Weee Process,Weee Process,Caustic Recovery,Copper Processing Plant from Other Metals & Metal Products Supplier or Manufacturer ...
The refining anodes taken out from the refining furnace is changed into electrolytic copper with purity of 99.99% through an electrolysis process: During electrolysis, copper (II) ions leave the impure copper anode and since they are positive, migrating to the negative cathode.
Primarily during copper electrorefining, anode impurities behave in following ways. • Elements less noble than the copper such as nickel, iron dissolves in the electrolyte. • Elements like gold, silver, platinum, selenium, tellurium, which are more noble than the copper remains undissolved and form an anode slime, which gradually drops, to ...
Thermal treatment of copper anodes has a good effect on the specific energy required for the electrorefining process where it is about 0.329 kWh/kg when quenched anode in water is electrolyzed, while it is about 0.491 kWh/kg when untreated anode was electrorefined.
Processing of copper electrorefining anode slime: a review J. Hait *1, R. K. Jana 1 and S. K. al 2 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
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 . Anode Slime From Copper Electrorefining Process. the anode slime has been gained anode slime, copper, gold . EXTRACTION OF . of tellurium from copper electrorefining 2 to 2 from .
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A series of copper electrorefining tests were performed in a pilot-scale cell to examine the effects of anode compositions, current density, cathode blank width, temperature, and flow rate on the anode slime behavior and cathode copper purity.
Anode Slime. Anode slime is a product obtained from the copper electro refining process. It contains, among other elements, precious metals formerly contained both in the copper concentrate and in the copper recycled materials treated in our Smelter.
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.
Anode Slime Recovery From Weee Process - Buy Weee Process . Through electro-refining, we can get 99.99% Copper cathode, the precious metal and impurities sinking into the electrolytic cell bottom, become anode slime. Get Price Copper Cathode, China Copper Cathode Suppliers Directory on
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
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
Electrorefining can be used to purify a number of metals including copper, nickel, cobalt, lead and tin. Electrorefining Copper. During the electrorefining stage of copper production, a series of impure copper anodes and thin starter sheet cathodes (such as thin copper foil) are suspended in a tank.
Combining conventional electrochemical measurements, laser‐based 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.
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 ...
Effect of As, Sb, Bi and Oxygen in Copper Anodes During Electrorefining Proceedings of Copper 2010 1499 ionised water and brushed, to remove remaining anode sludge from the surface of the anodes. In the next step, the electrolyte from each cell is filtered and the collected anode sludge is immediately washed and dried.
However, in the electrorefining process, the anode surface is easily covered by insoluble impurities (anode slime) which obstruct the elution of the copper ion and cause a rise in cell voltage (anode passivation). In particular, silver is well known as one of the factor of the anode passivation.
Electrowinning is the oldest industrial electrolytic process. The English chemist Humphry Davy obtained sodium metal in elemental form for the first time in 1807 by the electrolysis of molten sodium hydroxide.. Electrorefining of copper was first demonstrated experimentally by Maximilian, Duke of …
This slime generated during the electrorefining of copper anodes refining process contains, among other base metals recoverable quantities of gold, silver and the platinum group
anode slime samples were compared to optical micrograph and SEM-BSE images of respective anode copper samples. It was shown that SEM-EDS and SEM-BSE provided precise information about phases formed during electrorefining. The settling rate and particle size had a correlation only with a copper content of anode slime.
In the electrorefining process, direct current is applied and copper ions dissolve from the anode to the electrolyte before deposition onto the copper cathode. Simultaneously, the anode impurities - including precious metals - are involved in to the electrolysis process either as solid or soluble species.
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+ + neand at the cathode: Mn+ + ne- → M Electrorefining is a much more common process than ...
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.
During the electrolysis process pure copper is deposited on cathode plates and impurities which are soluble fall to the bottom of the cell as anode slimes or sludge. Precious metals (Ag, Pt, Pd), can be extracted from the anode sludge created by the electro-refining process.
The electrorefining process is continuous except when new silver Doré anodes are loaded in the cells and the crystals of refined silver, silver anode slime and anode scrap is discharged from the cells at the end of the electrolysis cycle.
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, ... hydroxide compounds which will be found in the anode slime…