Electrolytic recovery of copper and regeneration of nitric acid from …
@article{osti_6245074, title = {Electrolytic recovery of copper and regeneration of nitric acid from a copper strip solution}, author = {Stewart, T L and Hartley, J N}, abstractNote = {The fabrication of nuclear fuels involves stripping of a copper jacket with nitric acid. The waste acid, which contains 3.0 to 4.5 N nitric acid and 100 to 180 g/L copper, is currently …
Hydrometallurgical process for recovering silver from copper
In the electrolytic refining of copper, the anode mud or sludge contains variable amounts of silver, gold, platinum, palladium, selenium, tellurium, arsenic, antimony, copper, nickel and lead among others, which may be valuable and should be recovered. ... Recovery of silver from electrolytic copper refinery slimes US4094668A (en) * : ...
An environmentally-friendly method to recover silver, copper and …
Introduction. Copper anode slime is a by-product obtained during the electrolytic refining of blister copper, and is an important secondary resource for recovering valuable metals such as selenium, copper, silver, lead, tellurium, bismuth, antimony, nickel, arsenic and minute quantities of platinum group metals (Hait et al., 2009, Cooper, 1990, …
Recovery of copper and tin from stripping tin solution by
It is owing to the anode material and electrical conductivity. The recovery rates of copper are all about 100 %, but the recovery rate of tin increases from 60.12 % to 80.62 % by graphite anode used. In the process of electrodepositing tin, 316 stainless steel anode is dissolved seriously, and the rate of weight loss reaches 8.14 %.
Enhanced recovery of high purity Cu powder from reclaimed copper
The electrolytic cell was separated into an anode and a cathode zone by an alkali-resistant filter cloth. 2.2. Experience process. A certain amount of NH 3 ·H 2 O, ... This study provides a new method for the one-step recovery of copper resources by electrolysis of RCA. CRediT authorship contribution statement. Jiaming Chen: Data curation ...
Occurrence Behaviors of As/Sb/Bi in Copper Anode Slime and …
1. Introduction. China is the world's largest producer of refined copper, producing 10.1867 million tons in 2021. 1 Copper anode slime is an important byproduct produced in the copper electrolytic refining process, and its yield accounts for approximately 0.2–0.8% of refined copper production. 2 Copper anode slime is rich in …
Electrolytic copper refining cell | Gold Refining & Metal Extraction …
So lets start with the electrolyte. Copper as copper sulfate 45 – 50 g/L. Sulfuric acid 170 – 200 g/L. The following additives, used in very small quantities, are to level the deposit and affect the grain of the deposit making it denser. Bone glue, 1 gram for every 25 pounds of anode processed thru the solution.
Recovery of Silver and Gold from Copper Anode Slimes
Copper anode slimes are a byproduct of electrolytic copper refineries which usually contains many valuable elements such as Au, Ag, PGMs (platinum-group metals), Cu, Se, Pb, As and Sb.
Electrolytic Recovery of Nickel and Copper from Acid
This research focuses on the electrochemical recovery of copper and nickel from acid pickling solutions used to treat metal surfaces. Using hull cells, beaker plating, …
The direct electrorefining of copper matte | JOM
Direct electrorefining of copper matte would be a desirable alternative to copper converting and its associated troublesome sulfur dioxide emissions. After more than 100 years of study, however, no commercial process has been developed, even though an analogous process for the direct electrorefining of nickel matte anodes has been …
An innovative approach to recover anode from spent
A novel approach is proposed to recover anode from lithium-ion batteries. The anode active materials can be completely separated from the copper foil. The separated copper foil can be reused directly without processing. The anode prepared by recovered graphite showed better electrochemical performance.
Recovery of Silver and Gold from Copper Anode Slimes | JOM
Abstract. Copper anode slimes, produced from copper electrolytic refining, are important industrial by-products containing several valuable metals, particularly silver …
Copper and Antimony Recovery from Electronic Waste by
An electrolytic grade copper cylinder of 3.8 cm diameter and 10 cm length was the cathode, whereas a graphite hollow cylinder with an inner diameter of 8 and 10 cm length was the anode. ... Navarro L. Electrolytic recovery of bismuth and copper as a powder from acidic sulfate effluents using an emew cell. RSC Adv. 2015, 5, …
Recovery of Copper and Cyanide from Copper-cyanide …
1Metallurgical laboratory branch of Shandong gold mining technology Co., Led., 261400 Yantai, China. Abstract: Using direct electrolysis method, the recovery of copper and cyanide from high concentration copper cyanide solution was researched. The distribution of copper cyanide species was calculated by stability constants and balance equation.
An Innovative Hydrometallurgical Process for Recovery of
Process for Recovery of Critical and Rare Metals from Copper Anode Slimes Shijie Wang Abstract During electrorefining, copper is purified from impure anodes by dissolving the anodes in an electrolyte and plating on the cathodes. All insoluble components are precipitated to the bottom of electrolytic cells in the tankhouse or cellhouse.
An Innovative Hydrometallurgical Process for Recovery of
The need to comply with increasingly stringent environmental regulations has made hydrometallurgical processing an attractive method for recovery of many metals from copper anode slimes. This paper describes an innovative, four-step, hydrometallurgical process for gold, palladium, platinum, selenium, and bismuth recovery and refining.
Recovery of copper and water from copper-electroplating …
The results of the EL–ED process showed that almost 99.5% of copper and of water could be recovered, with the energy consumption of EL ≈3 kW h/kg and …
Metallurgical Process for Total Recovery of All Constituent
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 …
Treatment of electrolytic copper refinery slimes | JOM
Brit. 263,642, Jan. 6, 1927. Process for the extraction of precious metals from slimes of copper refineries. Slimes digested with sulphuric acid at not over 250 °C, water leached, roasted at 500–900 °C in a muffle furnace and finally smelted with 30 pct soda and 10 pct pyrolusite. J. O. Betterton and Y. E. Lebedeff.
Frontiers | Copper Recovery From Ammonia Solutions Through …
This treatment is beneficial for copper recovery because it allows the formation of soluble amines complexes, with cupric tetramine ( Cu(NH3)2+4 Cu ( NH 3) 4 2 +) being the most stable. In order to suppress the unit operation of solvent extraction (SX) and move directly to the electrochemical process, an electro-electrodialysis (EED) …
MIT Open Access Articles Electrolytic production of copper …
In this opinion piece, the electrolytic processing of the other major rock-forming compound, sulfide, is explored. The focus is on the production of copper, a bulk commodity with …
An environmentally-friendly method to recover silver, copper and …
Copper anode slime is a by-product obtained during the electrolytic refining of blister copper, and is an important secondary resource for recovering valuable metals …
An environmental-friendly process for recovery of tellurium and copper
At present, anode slimes from electrolytic copper refineries are the primary source of tellurium, which is the main source of the world tellurium supply. 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 ...
Copper Refining Electrolyte and Slime Processing
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) …
Electrolytic Refining
In the actual copper-refining operation, the impure alloy of copper, nickel, gold, etc., is cast in a thin, flat plate constituting the anode: the cathode is usually a sheet of pure electrolytic copper. Anodes and cathodes (30 to 40 of each) are immersed in a cell containing copper sulphate and sulphuric acid which serves as an electrolyte.
(PDF) Direct copper recovery from pregnant leaching solutions …
The removal of copper from sludge was up to 96%, and the recovery in the form of copper foil via electrodeposition was 57% under optimized conditions (current density of 50 mA/cm 2, pH solution ...
Liberating Copper and Nickel: A True Story
Refining of Copper. Copper refining is a process that involves multiple steps. Usually, it starts with a copper concentrate that is smelted to produce impure copper anodes. Then the anodes are electro-refined to produce an LME Grade A copper cathode (+99.99%). One of the most important factors in the refining of copper is the control of …
Recovery of copper and tin from stripping tin solution by
The recovery rate of copper is up to 100 % at 2.00 V, while that of tin is 80 % at 3.00 V. Similar content being viewed by others Recovery of Waste Tinned Copper …
An environmentally-friendly method to recover silver, copper and …
Copper anode slime is a by-product obtained during the electrolytic refining of blister copper, and is an important secondary resource for recovering valuable metals such as selenium, copper, silver, lead, tellurium, bismuth, antimony, nickel, arsenic and minute quantities of platinum group metals (Hait et al., 2009, Cooper, 1990, Ding et al ...
How to Recover Copper from Solution
A soluble chloride is added to the sulphate solution of copper and the proper amount of sulphurous acid is added. Moderate heat under pressure—90° C. of heat—precipitated almost all the copper as sub-chloride. The subsequent process of obtaining the copper without volatilization and the recovery of the chlorine offered …