copper anode slimes

US5271909A - Method of tellurium separation from copper ...

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° C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry, and contacting the ...


Recovering gold from anode slimes using a green extractant ...

Anode slime also contains large amounts of residual copper, which greatly exceed the amount of gold in the material. Hence, a powerful separation technique is required to selectively recover the economically valuable gold. Chloride leaching of anode slimes is generally considered as being the preferred method of gold extraction from anode slimes.


Extraction of platinum and gold from copper anode slimes ...

The copper anode slime, a byproduct of the copper electro-refining process, is a valuable secondary resource containing valuable elements such as Cu, Se, Sb, Ag, Au, and platinum group metals[9-11]. Based on the different composition and mineralogy in anode slimes, numerous approaches have …


Total Recovery of All Constituent Metals from Copper Anode ...

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 ...


Anode Slime - Hindustan Copper Limited

Hindustan Copper Limited (HCL), a public sector undertaking under the administrative control of the Ministry of Mines, was incorporated on 9th November 1967. It has the distinction of being the nation's only vertically integrated copper producing company as it manufactures copper right from the stage of mining to beneficiation, smelting, refining and casting of refined copper metal into ...


PROCESSING OF COPPER ANODE-SLIMES FOR EXTRACTION …

hydrometallurgical methods to process the copper-anode slimes for extraction of copper. The decopperized slimes are then enriched in lead, tin, and silver. Many hydrometallurgical processes were reported for extraction of noble metals, among them, cyanide (Hoffmann, 1991; McClincy, 1990) and thiourea leaching (Schulze, 1984).


Anode Slimes | Konkola Copper Mines Plc

Anode Slimes. One of the by-products of KCM's refining operations at Nkana is anode slimes. This material is exported under long term contracts to third parties for the recovery of the contained minerals. During the electrolysis process pure copper is deposited on cathode plates and impurities which are soluble fall to the bottom of the cell ...


Tellurium, from Copper Anode Slime to High Purity Product ...

Oct 06, 2020· Tellurium is a rare metalloid that is vastly produced from copper anode slime, which is a by-product of the copper electrorefining process. Choosing the proper recovery method strongly depends on the slimes composition, mineralogy, and tellurium concentration. In addition, correctly selecting the right method of leaching, purification, and precipitation in economic and environmental processing ...


Tellurium - USGS

Present production of tellurium from the United States is solely from the anode slimes at ASARCO LLC's copper refinery in Amarillo, Texas, and may total about 50 metric tons per year. The main uses of tellurium are in photovoltaic solar cells and as an additive to copper, lead, and steel alloys in various types of machinery.


Tellurium Data Sheet - Mineral Commodity Summaries 2020

from anode slimes collected from electrolytic copper refining, and the remainder was derived from skimmings at lead refineries and from flue dusts and gases generated during the smelting of bismuth, copper, and lead-zinc ores. Potential sources of tellurium include …


HYDROMETALLURGICAL PROCESSING OF ANODE SLIMES …

Hydrometallurgical Processing of Anode Slimes Obtained from the… 67 Figure 3. 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


Copper Anode Slime Recovery-Copper- - Metalcess

Copper Anode Slime Recovery. 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. Smelter of anode slime is most likely divided into two groups by the two different recovery processes based on its property and treatment capacity ...


Processing of Copper Anode-Slimes for Extraction of Metal ...

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 ...


A Novel Process For Recovery Of Te And Se From Copper ...

Anode slimes almost invariably contain copper, tellurium, selenium, silver, gold and traces of platinum group metals. In order to recover the precious metals from slimes, refineries must first complete the separation of copper, tellurium and selenium prior to refining silver and gold to pure products.


Copper Anode Slime - Metalcess

Copper Anode Slime. 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 ...


Investigation of the evaporation kinetics of a lead-silver ...

1 · 1.Introduction. At present, the global production of copper and lead is achieved mainly through the process of "fire melting-fire refining-electrorefining" [].The noble metal in the concentrate enters blister copper and crude lead during pyrometallurgical smelting and enters the anode slime due to a difference in electrode potential during the electrolytic refining process.


AU9918804 BEHAVIOUR OF POLONIUM-210 DURING …

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.


Products - Atlantic Copper

The anode slime is sold to refineries that are specialized in processing this product to recover and refine the precious metals and other elements contained. Iron Silicate Iron silicate is a product obtained from the copper ore smelting process, when silica is added to separate the iron from the rest of the components mixed in with the ...


Thermochemical Route for Extraction and Recycling of ...

One of these materials, copper anode slime (CAS), derived from a copper electrolytic refining factory, was used for this study. The sample was subjected to isothermal treatment from 225 to 770 °C under air atmosphere and the reaction products were systematically analyzed by scanning electron microscopy through energy dispersive spectroscopy ...


Floating Slimes Essay - 1864 Words | Cram

Floating Slimes Essay. 1864 Words 8 Pages. Show More. Silver, lead, arsenic, bismuth, antimony, selenium, and nickel are common impurities existing in copper anodes. Some impurities dissolved from the anodes can precipitate, if their concentrations in the electrolytic solution are above saturation levels. Some of these precipitates can settle ...


v116n6a16 Selenium minerals and the recovery of selenium ...

primarily from the anode slimes of copper refineries (Butterman et al., 2004). There are various reports in the literature on the treatment of copper anode slimes to recover selenium (Hoffmann 1989; Cooper 1990). In this paper, we provide an overview of selenium minerals, as well as the recovery of selenium from copper refinery anode slimes.


US4076605A - Dichromate leach of copper anode slimes ...

This invention relates to a process for the recovery of metal values from copper refinery anode slimes composed largely of copper, selenium, insolubles, and precious metals, including silver, comprising leaching the slimes with a solution containing from 20 to 200 g/l H 2 SO 4 and from 2 to 25 g/l hexavalent chromium at a temperature not exceeding about 80° C., whereby copper dissolution is ...


Decopperization mechanism of copper anode slime enhanced ...

The copper anode slime is an important raw material for extracting rare precious metals and is also an effective way and inevitable choice to make up for the gradual depletion of primary mineral resources [3,4,7]. The copper anode slime generally contains more than 10% copper, mainly in the species of metallic copper and its compounds.


Export Data and Price of anode slime under HS Code 7112 ...

Detailed Export Data of anode slime. ANODE SLIME (CONTAINING GOLD 39.060 KGSAND SILVER 669.257 KGS) ANODE SLIME (CONTAINING GOLD 65.251 KGSAND SILVER 739.424 KGS) ANODE SLIME (CONTAINING GOLD 65.153 KGSAND SILVER 904.482 KGS) ANODE SLIME (CONTAINING GOLD 30.384 KGSAND SILVER 440.683 KGS)


(PDF) ANODE SLIME GAINED DURING ELECTROLYTIC REFINING ...

The aim of this research is to get better understanding of the electrolytic refining process in order to yield the anode slime. Three types of secondary copper anodes are electro refined in an electrolytic system, where the electrolyte is an acid of


PRESSURE LEACHING OF DECOPPERIZED COPPER …

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.


Processing of Copper Anode-Slimes for Extraction of …

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 ...


Recovering selenium and tellurium from copper refinery slimes

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 ...


Processing of copper electrorefining anode slime: a review ...

Jul 18, 2013· 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 …


Metallurgical Process for Total Recovery of All ...

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 ...


Tellurium - USGS

from anode slimes collected from electrolytic copper refining, and the remainder was derived from skimmings at lead refineries and from flue dusts and gases generated during the smelting of bismuth, copper, and lead-zinc ores. Potential sources of tellurium include bismuth telluride and gold telluride ores. Substitutes :


Optimized Leaching Conditions for Selenium from Sar ...

Anode slimes refer to the residual materials generated at the bottom of the electrolysis cells during the refining of copper. Copper anode slimes from Sar-Cheshmeh (a mine in the Southeast of Iran) are black in colour and are extremely fine-grained. According to Abdollahy [1], the copper anode slimes…


Integrated process for recycling copper anode slime from ...

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 …


Electrowinning - Wikipedia

Electrowinning, also called electroextraction, is the electrodeposition of metals from their ores that have been put in solution via a process commonly referred to as leaching. Electrorefining uses a similar process to remove impurities from a metal. Both processes use electroplating on a large scale and are important techniques for the economical and straightforward purification of non ...