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A process for the removal of lead content in anode slime by subjecting the latter to primary and secondary leach in a medium of an ammonium acetate solution at a temperature not exceeding 80° C. Whereby lead dissolution is maximized and other metals are minimized. Separate the leach solution from the undissolved slime residue, crystallize lead from the separated leach solution and recover the ...
Adherent anode slime samples were collected from the Boliden Harjavalta''s Pori refinery during MarchApril 2014 from 31 different anode cells, one anode lug and one adherent anode slime sample from each. The adherent anode slimes were collected before washing of anodes, at the end of the electrolysis cycle. Then, the samples were
Anode: 4OH 4e → 2H2O + O2↑ 2SO42+2H2O 4e → 2H2SO4 + O2↑ After treatment of the cathode surface, the copper layer deposited on the cathode can be peeled off, to obtain a certain thickness of copper sheet. The copper sheet with certain functions is called copper foil.
Nov 23, 2015· In this last video we smelt the dried anode slimes and recover a button of precious metals. This is the third and final installment of our smelting and gold refining series. Email: infoMBMMLLC ...
Mar 02, 2010· More precisely, the invention relates to a method and device for treating anode slime obtained from copper electrolysis. In copper electrolysis, the insoluble element of the anodes falls on the bottom of the electrolytic tank as anode slime, from where it is recovered when the anodes .
Pure copper cathode sheets The refining anodes taken out from the refining furnace is changed into electrolytic copper with purity of % through an electrolysis process: During electrolysis, copper (II) ions leave the impure copper anode and since they are positive, migrating to the negative cathode.
Jul 18, 2013· 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 ...
cast into anodes. Those copper anodes are electrorefined in an electrolytic system, where the electrolyte is an acid copper sulphate solution, where a high purity electrolytic copper is produced (>999,9/1000). The slime when submitted to an oxidative leaching process, using sodium hypochlorite and hydrogen peroxide as oxidizing agents, turn ...
The main components of the anode slime (CuAgSe, Cu 2x Se y S 1y, Ag 3 AuSe 2) react with oxygen, producing mostly copper and selenium oxides as well as AgAu alloys as final products at ...
Aug 01, 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 characterization of slimes.
Copper electrorefining (CuER) is the principal method for producing >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 ...
During the electrolysis the metals present in the anode, which are of lower electrochemical activity than copper, chiefly silver, tellurium, gold, and traces of platinum, are precipitated as slimes on the floor of the electrolysis cells as they are released from the anodes (Table ). Any mercury, which is frequently present in the ore, is ...
Equipments For Processing Anode Slime Know More. equipments for attrition for copper anode slime Patent US Treatment of anode slime from copper Google Mar 16, 1976 Process for the flotation of anode slime from copper electrolysis size of anode slime, concentration of pulp dimension of attrition apparatus, Gold Silver ,...
Anode slime is a byproduct from copper or lead electrorefining process. The copper/lead anode slime usually contain As, Sb, Bi and precious metals like gold and silver. Smelter of anode slime is most likely divided into two groups by the two different recovery processes based on its property and treatment capacity, pyrometallurgy and ...
Figure 2 shows that the copper extraction rate increased with the increase of temperature in the range 6585oC. Further increase in temperature had a little effect on copper extraction. Fig. 2. The effect of temperature on the leaching rate of copper from anode slime by oxygenated M H2SO4, particle size 75 µm Applying the following equation:
from copper anode slime Recovery of gold from copper anode slimes is a multistages process There are more than 650 operating and planned copper mines, 140 smelters and 250 refineries world wide
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Silver refining is a core step of the processes of anode slime treatment and precious metals recovery in copper refineries (Hait, Jana and al, 2009; Ludvigsson and Larsson, 2003).It separates ...
Anode Slimes | Konkola Copper Mines Plc. 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 .
Apr 10, 2014· The copper anode slime used in the experiments was provided by one of the copper smelters in China. Before experiments, the original copper anode slime was washed with hot water of 80 °C and then sieved with 100 mesh sieve to remove large particle. And then slurry was vacuum filtered and dried at 120 °C.
Anode slime is the byproduct of copper or lead electrorefining process and found in electrolytic cell bottom or on the anode scrap surface. The copper anode slime and lead anode slime usually contain precious metals like gold and silver. Depending on the treatment capacity, process of anode slime recovery is achieved by two different methods ...
Anode slime from copper electrolysis, though a byproduct of copper industry, contains man y valuable and important metals like nickel, copper, selenium, tellurium
Apr 02, 2004· A new approach for the treatment of copper electrorefining anode slime based on hydrometallurgical route involving sulfuric acid leaching with additives such as manganese dioxide and sodium chloride has been developed at National Metallurgical Laboratory (NML), Jamshedpur, India. Mineralogical characterization of the anode slime and the residues after various leaching treatments, .
The SEM images of the dried and ground anode slime sample produced by an electrolysis of 3h with 1000 A/m2, a)– low magnification, b)– high magnification of the marked area Figure 4. The characteristic EDX spectra of the anode slime produced in 3h with 1000 A/m2 Figure 5 The XRD spectrum of the produced anode slime sample (3h electrolysis with
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