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USA US769555A USA USA US A US A US A US 769555 A US769555 A US 769555A US A US A US A US A US A US A Authority US United States Prior art keywords tellurium copper residue slimes form Prior art date Legal status (The legal status is an assumption and is not a .
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 electrorefining mainly produce LME CuCATH1 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.
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 ...
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 and C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry ...
PDF | A hydrometallurgical route was developed to extract metals such as gold, silver, copper, and selenium from anode slime from Sarcheshmeh Copper Complex in Iran. For the extraction of copper ...
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.
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 and C. until copper, nickel and substantially all of the ...
Apr 14, 2011· SELECTIVE GOLD EXTRACTION FROM COPPER ANODE SLIME WITH AN ALCOHOL . United States Patent Application . Kind Code: A1 . Abstract: The invention relates to a method for recovering gold from an acid digest of a goldcontaining copper anode slime. ... The fraction of gold and silver released during copper electrorefining process reports ...
Sequential removal of selenium and tellurium from copper anode slime with high nickel content Article in Transactions of Nonferrous Metals Society of China 25(4) · April 2015 with 124 Reads
A hydrometallurgical process for recovering precious metals, such as gold, silver, selenium, and tellurium etc. from anode slime has been developed and tested successfully. The process comprises three major unit operations: leaching, liquidliquid extraction, and reduction. The decopperized anode slime is first leached with nitric acid at an elevated temperature to obtain a leach solution ...
Effect of tellerium in cu electrorefining Products. As a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonable solutions for any sizereduction requirements including, Effect of tellerium in cu electrorefining, quarry, aggregate, and different kinds of minerals.
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, ... the US Patent A (Ernst Runyon ...
Extraction of copper and gold from anode slime of Sarcheshmeh Copper Complex selenium, silver, and tellurium with dilute HNO3 (2–8 M), recovery and recycling of HNO3, selective solvent extraction of silver, and finally separation and recovery of selenium and tellurium from the Agfree solution by reduction with SO2 under different conditions ...
Processing of copper anodeslimes 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 .
The sulphation roasting technique has been used in the extraction of tellurium from copper refinery slimes. In this technique, slimes are heated in concentrated sulphuric acid to convert tellurium to more leachable forms (Chizhikov and Shchastlivyi, 1970, Cooper, 1971, Hoffmann, 1989).
Aug 17, 1999· 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 .
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 and C. until copper, nickel and substantially all of the tellurium is dissolved, thereby forming a leach slurry ...
Dec 02, 2014· 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(2ethylhexyl) phosphate (TEHP) and a combination thereof.
Request PDF on ResearchGate | Detellurization Process of Copper Anodic Slimes Leach Liquor by Cementation of Tellurium Using Elemental Copper | During the leaching of anodic slimes, tellurium ...
Abstract: 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.
Download Citation on ResearchGate | Processing of Copper AnodeSlimes for Extraction of Metal Values | Processing of anodic slimes from an Egyptian copper electrorefining plant, exhibiting high ...
A hydrometallurgical process for the recovery of silver, selenium and tellurium from the anode slime produced in the electrolytic refining of copper or lead or from other raw materials bearing these metals, wherein the raw material and concentrated sulfuric acid or oleum are heated at approx. 160°300° C, preferably 160°200° C, in order to sulfate the nickel and the possible copper.
tellurium were leached out in the following acid leaching process. Key words: copper anode slime tellurium selenium soda roasting alkaline leaching acid leaching. 1 Introduction. Selenium process is a costeffective approach for recovering selenium and .. of copper electrorefining anode slime.
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