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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, numerous approaches have been made by the researchers to extract them following pyro-, pyrohydro ....Get A Quote
Apr 01, as described before, the anode slime mainly contains elements electrochemically nobler than copper (te, se, ag, au, pt, and pd). the slime slurry is pumped electrolysis to the precious metals plant. download : download full-size image; fig. 12. recovery of selenium from copper anode slime by outokumpu process.
Apr 16, the anode slime produced from copper electrorefining is an important by-product in the recovery of valuable metals, especially precious and rare metals.1,2,3 treatment processes of copper anode slime include traditional pyrometallurgy electrolysis, hydrometallurgy and a flotation-metallurgy combination process. at present, countries using the flotation-metallurgy combination process to treat.
Copper electrorefining process anode slime. 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.
Copper scrap recycling. recycling of copper scrap greatly reduces natural resource exploration as an alternative source of copper metallurgy and has big advantage in investment, production cost and off-gas treatment, thus making the copper scrap smelting projects remunerative. however, due to the wide source range, the copper scrap is.
Copper to anodes ( 99% cu) removes dissolved gases and some metallic impurities. the aim of final electrolytic refining is to produce cathodes with a maximum of 65 ppm metallic impurities. the main process stages to recover valuable elements and remove excess impurities are anode slime treatment and electrolyte.
Dec 07, 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. from time to time, the pure copper is scraped off the.
Feb 09, dor slag is secondary product of copper electrorefining anode slime treatment. the slag consists mainly of different slag formers, such as borax and silica based minerals together with soda and traces of sealing materials. however, dor slag also contains metals present in the anode slime, such as ag, cu, bi, sb and.
Impurities from the copper anode, such as gold, silver, platinum and tin, collect at the bottom of the electrolyte solution, deposited as anode slime. -----more details on the impurities here ag, au, tin and pt are more noble than copper, insoluble in this electrolyte and so do not deposit on the.
In the second stage, called copper blow, sulphur is removed to get blister copper. converter slag is treated in a slag cleaning furnace for recovery of copper. blister copper is further refined by oxidation and then by reduction to approximately 99.6% copper purity in the anode furnace, and cast as copper.
Jan 01, keywords tankhouse mechanization, anode scrap, anodes, cathodes, starting sheets, electrolyte, anode slimes. introduction inco's copper refinery which is located in copper cliff, ontario, about two kilometers from the smelter, was constructed in - by american metals company and inco. the tankhouse operation remained largely unchanged.
Jul 18, abstract. 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.
Participated in implementation projects and sales projects in copper refining and anode slime treatment. service trips and commissionings around the world with duration from few days to over 90 days. aalto university school of science and.
Processing of copper anode-slimes for extraction of metal values received march 5, , reviewed, accepted may 28, processing of anodic slimes from an egyptian copper electrorefining plant, exhibiting high contents of copper, lead, tin and silver has been presented. ... the leaching rate of copper from anode slime by oxygenated 0.5 m.
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Sep 01, in the present study, a complete process for efficient recovery of tellurium and copper from copper telluride out of copper anode slime processing has been developed. the process is comprised of two main procedures of oxidizing alkaline leaching for cu te separation, and neutralization of alkaline leaching solution for teo 2.
The process of the instant invention can be utilized to upgrade any type of anode slime or mud produced in electrolytic refining of copper. while the instant invention as hereinafter described in detail, is applicable to all such slimes, the optimum processing parameters for any particular slime can be determined by making test runs based on.
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.
These efforts require many tasks including the collection of vital thermodynamic data related to the processed materials. however, in the processing of copper anode slime, for example, there are still lack of data of the melting point for the slag phase and the thermodynamic properties of some precious metals in the metal.
To extract gold and silver from a copper anode slime with about 15% tin in a plant using the traditional pyrometallurgy-electrorefining technique, the recovery is only 90%. the rest of the gold and silver is lost in the slag which contains mainly sno 2, pbo, and sb 2 o 3 in the present work, a process is developed to recover the gold and silver.
Together three subsystems. the treatment of anode slime includes processes like decopperizing, selenium recovery, dor smelting, tellurium recovery, and two to three electrowinning stages for noble metals recovery, so the anode slime treatment includes six to eight stages. a primary copper.