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A new method was proposed for extracting selenium from copper anode slimes with a low concentration of nitric acid in a sealed sulfuric acid leaching system. It .
Anode slime is a byproduct of copper electrorefining process. It contains copper, lead, gold, silver, selenium, tellurium, arsenic, nickel, platinum, silica and other elements. In processing anode slime, extraction of precious metals becomes the main object, especially gold, silver, selenium, tellurium, and platinum. At the ...
Copper electrorefining mainly produce LME Cu-CATH-1 copper cathode and byproduct anode slime from copper anode. Metalcess develops mini scale copper ER from 1T/d copper ER system with modular design/easy installation and saving installation instruction cost.
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.
Aug 17, 1999· The present invention is directed to the substantially selective extraction of tellurium from tellurium-containing materials, and more particularly copper electrorefining slimes. Conventionally, a slurry of the shines is prepared in diluted sulphuric acid, and leached in an autoclave to extract certain metal values, including silver and tellurium.
An improved process for recovering tellurium from copper electrolysis slime. The process comprises leaching copper and tellurium from said slime with sulfuric acid and recovering tellurium from the solution after leaching (called "leach") by suspending at least one copper electrode plate in a bath of a leach, allowing tellurium to deposit on the surface thereof as copper telluride, agitating ...
This poster discusses the extraction and recovery of tellurium. The focus is on effective recovery from copper anode refining slimes into a functional, value added domestic supply chain.
The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slim The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave The excess of selenium and/or sulphur allows the ...
The refinery production of copper in 2015 was estimated to be 22.9 million tonnes [].In 2014, the refinery production was 22.2 Mt, of which approximately 14.2 Mt was primary electrorefined and fire-refined and 4.1 Mt electrowon, and secondary production was 3.9 Mt [].Based on U.S. Geological Survey (USGS) dataseries [] during 1990–2011, the increase of primary copper production was 0.39 Mt ...
Oct 01, 2015· 1. Introduction. Copper anode slimes are the by-products in copper electrorefining which are periodically collected from the deposition cells and processed for the recovery of metal values such as Cu, Ni, Pb, Sb, Sn, Se, Te, Au, Ag and Pt (Liu et al., 2014).Some pretreatment technologies such as sulfation roasting-leaching, oxidative sulfuric acid leaching and chlorination leaching are ...
Tellurium Extraction From Copper Electrorefining Slimes Patent Us. Crushers used in iron ore mining crushers used in iron ore mining equipment list for mining 30 ton per hour processing of copper electrorefining anode slime improved estimates for te and se availability from cu extraction of copper and gold from anode slime of effect of tellerium in cu electrorefining gold recovery from copper ...
A method for separating tellurium includes separating and recovering tellurium (Te) from a dissolved solution containing the tellurium using a solvent extraction by an extractant, which contains one selected from a group consisting of tributyl phosphate (TBP), tris(2-ethylhexyl) phosphate (TEHP) and a combination thereof. The method may separate and recover the tellurium as a high-priced ...
Jan 01, 2018· Hoffmann (1989) noted that tellurium in anode slimes is present as intermetallic compound of copper, silver and gold such as Cu 2 Te and (Ag, Au)Te 2 with tellurium concentration of 2–10%. Shibasaki et al., 1992, Knockaert, 2005 report typical concentrations of tellurium in the copper anode slimes from different producers .
Extraction of copper and gold from anode slime of Sarcheshmeh Copper Complex selenium, silver, and tellurium with dilute HNO 3 (2–8 M), recovery and recycling of HNO 3, selective solvent extraction
7 processes to produce precious metals 7.1 - Eurometaux. Jul 3, 2014 ... Anode slimes from electrolytic copper refining are a significant source of precious ... environmental legislation, but also from the acute rise in silver prices. ... but process the lead alloy directly to recover precious metals. .... copper electrorefining and for other materials using processes described above.
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. 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) co-dissolved ...
Aug 17, 1999· The present invention is directed to the substantially selective extraction of tellurium from tellurium-containing materials, and more particularly copper electrorefining slimes. Conventionally, a slurry of the shines is prepared in diluted sulphuric acid, and leached in an autoclave to extract certain metal values, including ...
cost of copper electrorefining anode slime processing. Processing of copper anode-slimes for extraction of metal values. Mar 5, 2002 Processing of anodic slimes from an Egyptian copper electrorefining plant, Key words anode slimes, leaching, copper, silver capital costs are relatively low when compared to . Get Price
Sep 12, 2008· Abstract: 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.degree. and 200.degree. C. until copper, nickel and substantially all of the ...
copper electrorefining process anode slime Construction Waste Crusher Construction waste refers to the construction, construction units or individuals to construct, lay or demolish all kinds of buildings, structures and pipe networks, etc., and generate the spoil, spoil, waste, residual mud and other wastes generated during the repairing process.
Tellurium can be recovered from leach solutions of copper refinery slimes by precipitation as copper telluride: Te(OH)6 + 5Cu + 3H2SO4 = Cu2Te + CuSO4 + 6H2O The kinetics of this reaction were ...
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 slurry ...
Copper anode slimes usually consists of copper, selenium, nickel, tellurium, silver, gold, and trace amount of platinum group metals, with the Te content typically being about 1–4 wt%, and in some cases reaching as high as 8–9 wt% (Moats et al., 2007). For the copper anode slime processing, two main processes are operating in practice to ...
The present invention is concerned with a method for the substantially selective extraction of tellurium from copper electrorefining slimes. The method comprises maintaining a molar ratio Ag/Se, Ag/S or Ag/Se+S at a value of about 2 or less in the slimes during leaching thereof in an autoclave. The excess of selenium and/or sulphur allows the formation of Ag 2 Se or Ag 2 S, which remains ...
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