Sep 11, 2014· 1. Roasting. Copper anode slimes are roasted at 600–800°C with sulfuric acid or oxygen, which depends on the composition of slimes. During the process, selenium is evaporated in the form of SeO 2 gas. Copper is present in the form of soluble copper sulfate, which can be removed with dilute acid or water leaching. 2.
ANODE SLIMES PROCESSING The anode slimes collected from the bottom of the electrolytic cells are processed to recover copper, selenium, tellurium and precious metals. In general, refineries employ a combination of both pyrometallurgical and hydrometallurgical techniques. Decopperisation is the first step in most anode slimes treatment plants.
copper anode slimes processing equipment from china. TBRC - JW Technologies... Outokumpu Technology's scope covers engineering and proprietary equipment ... copper anode slimes ... China. About 70% of the world's copper anode ... Steel And Cast Iron Skulls | TradeKey.
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) (e.g. Pt and Pd) as well as base metals like copper, nickel, selenium, tellurium and impurity elements such as lead, antimony and bismuth.
Chloride leaching of anode slimes is generally considered as being the preferred method of gold extraction from anode slimes. After leaching, gold is recovered from the gold- and copper-bearing solution by solvent extraction (SX) using a petroleum-based extractant, often diluted in …
Palabora Mining Company Ltd. The Palabora Copper is the only primary copper producer in South Africa. It boasts the secondary products as Magnetite, vermiculite, and anode slimes. Palabora Copper's Chemical laboratory is equipped to do routine sample analysis from a wide range of processing and environmental samples.
Anode slime is a byproduct of copper or lead electro-refining 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, i ...
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 …
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 …
copper anode slimes processing equipment; copper anode slimes processing equipment. contact LScrusher china Science Avenue, High-tech Zone, Zhengzhou 169 Tel: +86 18338488539 Email: [email protected] View product list. case. small industry loan in chhattisgarh like stone crusher machine;
Jan 01, 2019· In optimal electrorefining process, the settling rate of anode slime is sufficiently high to avoid the risk of getting the slime entrapped in copper cathodes. In this research the settling properties of copper electrorefining bottom slimes, mainly consisting of Cu, Ni, Ag, Se, Pb, As, Bi, Sb and Ba compounds, were studied by settling rate tests.
Jul 01, 1998· @misc{etde_20019954, title = {Behaviour of polonium-210 during anode slimes processing} author = {Brown, S A} abstractNote = {Refinery slimes produced during the electrorefining of copper anodes often contain recoverable quantities of gold, silver and the platinum group metals, platinum and palladium. The treatment process selected to recover precious metals from the slimes …
Nov 01, 2017· The copper anode slime was obtained from a factory which is located in southern of China. Before the experiment, H 2 SO 4 solution was used to remove copper, and H 2 O 2 was added. The main chemical composition of anode slime was analyzed by inductively coupled plasma (ICP), as shown in Table 1.NaClO 3 was taken as the chlorinating agent, H 2 SO 4 was taken as the leaching …
Kaldo Furnace technology. The Kaldo Furnace technology is a flexible solution for smelting and converting various primary and secondary raw materials such as concentrates, copper scrap, e-waste and precious metals anode slimes. Outotec Kaldo Furnace, equipped with advanced charging and off-gas systems allowing a very compact plant layout ...
Slimes from electrolytic copper refinery are first treated by leaching them with dilute sulphuric acid under an oxygen partial pressure of up to 50 psi and an elevated temperature, until copper and tellurium present in the slimes are substantially dissolved, and effecting a liquid-solid separation of the leached slurry so produced to separate the leach liquor from the leach slimes.
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 ...
Elemental copper in slimes arises from two sources: fragments ofthe anode which are dislodged during the refining process and report in the slimes, and cuprous oxide present in the anode which reacts with sulfuric acid in refining electrolyte dis proportionating to form cupric sulfate and finely divided copper powder, which reports in the ...
This article describes KUC's slimes process improvements, in particular wet chlorination for gold leaching. Kennecott Copper Anode Slimes Process The KUC refinery is located at Magna, approximately 16 miles west of Salt Lake City, Utah, USA. In the refinery's tank house, commercial anodes from the KUC smelter are electrorefined.
Hydrometallurgical processing of copper anode slimes has the following advantages: capital costs are relatively low when compared to those for a smelter, process may be applied to small and large operations, air pollution by sulfur dioxide is eliminated, equipment may …
Copper anode slimes are source of valuable elements such as selenium, tellurium, copper, silver, lead, antimony, tin, gold, and platinum group metals. There are vast, diverse methods to recover precious elements from the copper anode slimes. Sulfation roasting is one of the prevalent methods that be …
May 02, 2020· Abstract Copper anode slimes, the by-product of the copper electrorefining process, have been the subject of extensive investigation for recovering precious metals viz., Au, Ag, Pt and Pd, in addition to being the main source of rare/energy-critical elements such as Se and Te. There have been various approaches aiming at the development of extraction processes involving thermal and aqueous ...
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
Aug 15, 2013· The general process for the hydrometallurgical treatment of anode slimes is described by J. E. Hoffmann and K. E. Sutliff in their paper entitled Hydrometallurgical Processing of Kennecott Refinery Slimes, ibid. Electrolytic refinery slimes, i.e., anode slimes, usually contain between 10% and 40% elemental copper. Since copper can complicate ...
Copper industry. Umicore Precious Metals Refining offers its PM-refining services to many copper smelters worldwide. Typically Umicore can process: anode slimes, a complex combination of precious metals and impurities as Sb, Bi, As, Sn. flue dust containing precious metals.
Jan 01, 2019· This paper summarizes the hydrometallurgical technologies for precious metals recovery such as chlorine leaching of copper anode slime for silver recovery, solvent extraction (SX) for gold recovery, and ion exchange (IX) for PGMs recovery. It also presents a unique silver purification process.
A process according to either claim 1, 2, or 3, wherein the material subjected to leaching is a decopperized copper anode slime. 5. A process according to claim 1, including the additional steps of leaching the solids phase of the concentrated sulfuric acid leach slurry with water to dissolve the tellurium values; and of separating the liquid ...
Processing of copper anode-slimes for extraction of metal values154 Кб. Hydrometallurgical processing of copper anode slimes has the following advantages: capital costs are relatively low when compared to those for a smelter, process may be applied to small and large operations, air pollution by sulfur dioxide is eliminated, equipment may be designed and installed in...
The main processing steps of the Precious Metals Operations are the smelter, the copper leaching and electrowinning plant and the precious metals refinery. The operations are designed in such a way that raw materials can enter the flowsheet at the most optimal process step, determined by their physical aspect, their analytical fingerprint and ...