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content of anode slime. The main phases in the anode slime were copper and lead sulphates as well as coppersilver selenides. NiO was shown to be the major Nibearing phase in the adherent slime. Nickel, tellurium and lead had the strongest, whereas arsenic, selenium and antimony had the weakest tendency to report to the anode slime.
Jul 18, 2016#0183;#32;Nowadays, the conversion of waste materials into advanced material is taken into much consideration. The present paper attempts to investigate the chemical synthesis of gold nanoparticles from copper anode slime
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, pyrometallurgy and hydrometallurgy.
Gold extraction from anode slime often results in severe pollution as well as high consumption of reagents. Herein, a novel strategy, that in situ generates oxidative chlorine by a mechanochemistry approach, was developed for gold extraction from anode slime for the first time. By conducting dry ball milling of the mixed anode slime, KMnO4, and NH4Cl, elemental gold in anode slime
Jun 01, 2020#0183;#32;in the recovery of gold from secondary sources, including waste electric and electronic equipment (escrap), jewelry, spent catalysts, and copper anode Developed in the mid19th century, extraction of gold by chlorination was the rst hydrometallurgical gold
This study has shown that gold and silver can be recovered from a complex anode slime containing copper, selenium, and tellurium, but a carefully planned leaching procedure is required.
Hydrometallurgical gold recovery from primary or secondary sources is mainly based on a cyanide process, which is very dangerous for the environment due to the high toxicity levels. In view of the
Nov 01, 2009#0183;#32; Antimony electrorefining. Sb 2 O 3 was leached in the NaOH solution containing xylitol to prepare the electrolyte. The cathode was made of stainless steel with an active area of #215; cm 2, and the anode was the gold
The qualitative preparation of raw material anode slime of secondary Cu and its rational utilization will result the optimization of process of gaining metals for which it is dedicated. This study has shown that
ANODE SLIME GAINED DURING ELECTROLYTIC REFINING PROCESS OF SECONDARY COPPER ANODES . Nurten Deva 1, Musa Rizaj, Ismail Duman2, Florian Kongoli3 . 1 University of Prishtina,
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 copper sulphate solution. As a result of the electrorefining process the anode slime has been gained as secondary
It may be a branched chain alcohol. It may be for example 2ethyl1hexanol, 8methyl1nonanol or mixtures thereof. It may be capable of selectively extracting gold from an acid digest of anode slime. The method may also comprise the step of digesting a goldcontaining copper anode slime using acid to provide the acid digest.
Mar 01, 2014#0183;#32;Leaching of gold in the copper anode slime is affected by some elements such as silver, iron, and selenium. Therefore, copper anode slime was first washed by concentrated nitric acid (65%). 10 ml of concentrated nitric acid was added to 5 g of copper anode slime, and the obtained mixture was then stirred for 15 min.
Anode slime is the byproduct of copper or lead electrorefining 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
Mar 01, 2012#0183;#32;Omer and Recep (2000) studied the process for gold recovery from a complex anode slime containing copper, selenium, and tellurium, by roasting slime at 700 #176;C for 4 h to remove
Optimization of gold recovery from copper anode slime by acidic ionic liquid Hydrometallurgical gold recovery from primary or secondary sources is mainly based on a cyanide process, which is very dangerous for the environment due to the high toxicity levels. In view of the environmental effect, the present study proposes a new green solvent
A hydrometallurgical process is provided for the separative treatment of electrometallurgical anode slime containing precious metals and substantial amounts of tin dioxide and lead sulfate. The process is especially suited for treatment of anode slimes from the electrorefining of secondary
The purity of electrolytic antimony was % and gold and silver were enriched 89 times in the anode slime, therefore providing an effective separation of precious metals from antimony by
Feb 13, 2019#0183;#32;In order to develop a hydrometallurgical process to recover gold and silver from anode slime resulted from the treatment of copper sludge, leaching experiments of the anode slime were performed by a mixture of HCl and some oxidizing agents (H 2 O 2, NaClO, and HNO 3).Effect of the concentration of oxidizing agents, reaction temperature and time, pulp density and stirring speed on
How To Recycle Your Anode Slimes. We make it fast and easy to recycle your companys anode slimes in fact, youll be paid within 30 days from the day we receive your anode slimes scrap. Even though we customize every transaction to meet the specific needs of your company, here are our standard terms for refining anode slimes scrap:
[2] Synthesis of Gold Nanoparticles from Copper Anode Slime as a Secondary Gold Resource by Venmet Restorative Solution, National patent no. 89102, 2015 2014 [1] Synthesis of SilicaGold CoreShell Nanostructures Using Secondary Source of Gold
Mar 01, 2012#0183;#32;Omer and Recep (2000) studied the process for gold recovery from a complex anode slime containing copper, selenium, and tellurium, by roasting slime at 700 #176;C for 4 h to remove selenium and sulfide. The roasted samples were leached first with concentrated sulfuric acid in an autoclave at 350 #176;C under 8 atm oxygen pressure, and then with M
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