ca1120423a - electrowinning of metals - google patents

Controlling electrochemical growth of metallic zinc

It is found that the solid-electrolyte interphase (SEI) formed on Zn has a similarly strong influence as for alkali metals at low current regimes, characterized by a moss-like morphology. Another key conclusion is that the unique crystal structure of Zn, featuring high anisotropy facets resulting from the hexagonal close-packed lattice with a c / a ratio of 1.85, imposes predominant influences

Minerals

During the remelting of automobile scrap in the electric arc furnace steelmaking process, a dust is generated. This dust contains significant amounts of zinc, iron, and lead and in some cases, copper and nickel. However, the recovery of these metals is difficult, because of the complex chemical and physical characteristics of the dust. Numerous pyrometallurgical, hydrometallurgical and hybrid

electrowinning gold with steel wool cathode

US6017428A Electrowinning cell Google Patents An electrowinning cell and a cathode for use therein for removal of gold or other precious metals from a solution thereof in a suitable electrolyte. The cathode comprises a perforated steel plate wrapped in layers of woven wire mesh secured thereto.

(PDF) Gold Extraction and Recovery Processes For

The rich eluate solution that emerges from the elution process is passed through electrowinning cells where gold and other metals are precipitated onto the cathodes. After precipitation, the product is treated with dilute sulfuric acid to dissolve residual zinc and most of the copper (if any is present) [2].

New Plating and Anodizing Rectifiers for Sale

Precious Metals / PCB / Electronics IGBT rectifiers are available for plating gold, silver, platinum, palladium, palladium / nickel, copper, tin, indium, reel-to-reel, continuous strip, printed circuit board plating, etc. Capability: DC output: 0 – 12 V and 100 – 1000

Recovery of platinum group metal value via potassium

2015/10/1Whilst these processes are highly tuneable and are capable of producing high purity metals, gas phase volatization does require the use CO and Cl 2, both hazardous gases (Kim et al., 2000). The hazards associated with using these gases for any process of appreciable capacity lead to some significant health and environmental risks.

Features and Challenges of Molten Oxide Electrolytes for

2019/11/30In 1966, Winand from the Universit of Bruxelles in Belgium was granted patents in Europe and the USA 70 for manganese production by electrolysis in molten oxides. His design was built opposing the idea of using molten fluorides and their ' well established disagreements ', and instead identified the use of CaO-MgO-Al 2 O 3 -SiO 2 as a supporting electrolyte for the dissolution of MnO feedstock.

(PDF) REVIEWING THE OPERATION OF GOLD

DIRECT ELECTROWINNING (DEW)Direct electrowinning of precious metals directly from dilute (0.5 -10 ppm Au) pregnant leach solutions. RenoCell advanced electrowinning technology makes it commercially practical to directly electrowin precious metals from these mining and process solutions by providing significantly higher Faraday current efficiencies to recover precious metals concentrations

US4039403A

A method of electrowinning metals in which the anode comprises a foraminate container containing particulate material chosen from the group electrically conducting non-polarizing compound of a metal and a non-metallic element. US4039403A US05/661,786 US66178676A US4039403A US 4039403 A US4039403 A US 4039403A US 66178676 A US66178676 A US 66178676A US 4039403 A

Controlling electrochemical growth of metallic zinc

It is found that the solid-electrolyte interphase (SEI) formed on Zn has a similarly strong influence as for alkali metals at low current regimes, characterized by a moss-like morphology. Another key conclusion is that the unique crystal structure of Zn, featuring high anisotropy facets resulting from the hexagonal close-packed lattice with a c / a ratio of 1.85, imposes predominant influences

Manganese

Manganese is a chemical element with the symbol Mn and atomic number 25. It is not found as a free element in nature; [not verified in body] it is often found in minerals in combination with iron.Manganese is a transition metal with a multifaceted array of industrial alloy uses, particularly in stainless steels.

Copper and nickel selective recovery by electrowinning

1999/6/1Electrowinning experiments were carried out in potentiostatic operations at constant cathodic potential (constant potential electrolysis) and constant stirring conditions corresponding to 200 rev min −1, studying kinetics of copper and nickel deposition at 40 C at three different preset voltages.

Apple Reexamination Requests of Two VirnetX Patents,

2011/10/17(3) 90/011,965 (electronically filed) – U.S. Patent No. 7,704,452 entitled ALLOY AND ANODE FOR USE IN THE ELECTROWINNING OF METALS and owned by RSR Technologies, Inc. Filed October 18, 2011. (4) 90/011,966 (electronically filed) – U.S. Patent No. 8,038,524 entitled GAMING MACHINE WITH BUY FEATURE GAMES and owned by Aristocrat Technologies Australia Pty Ltd.

electrowinning gold with steel wool cathode

US6017428A Electrowinning cell Google Patents An electrowinning cell and a cathode for use therein for removal of gold or other precious metals from a solution thereof in a suitable electrolyte. The cathode comprises a perforated steel plate wrapped in layers of woven wire mesh secured thereto.

Resources

Metals and non-metals are separated during this stage using techniques similar to that used in the mineral dressing, e.g., screening, magnetic, eddy current and density separation techniques. The final stage in the recycling chain of e-waste is the end processing, where the non-metal and metal fractions of e-waste are further processed.

Zinc

Characteristics Physical properties Zinc is a bluish-white, lustrous, diamagnetic metal, though most common commercial grades of the metal have a dull finish. It is somewhat less dense than iron and has a hexagonal crystal structure, with a distorted form of hexagonal close packing, in which each atom has six nearest neighbors (at 265.9 pm) in its own plane and six others at a greater distance

Metallurgical Process for Total Recovery of All Constituent

These major metals are generally detected in phases such as Cu 2 Se, Ag 2 Se, Ag 2 Te, AgCuSe, Cu 2 O, NiO, CuSO 4 5H 2 O, CuSeO 3 2H 2 O, SbAsO 4 and PbSO 4.Chen and Dutrizac [42, 44,45,46,47,48,49,50] extensively conducted a mineralogical characterization of anode slimes using various samples from Inco's Copper Cliff Copper Refinery, Noranda Minerals Inc., Kidd Creek Copper

Solvent extraction of non

1976/2/1Deepsea Ventures have been granted three patents on the extraction of metals from manganese nodules. In the first [144], after leaching the hydro- chlorinated nodules, the separation of copper from nickel, from cobalt and from manganese is achieved by solvent extraction.

Zinc

Characteristics Physical properties Zinc is a bluish-white, lustrous, diamagnetic metal, though most common commercial grades of the metal have a dull finish. It is somewhat less dense than iron and has a hexagonal crystal structure, with a distorted form of hexagonal close packing, in which each atom has six nearest neighbors (at 265.9 pm) in its own plane and six others at a greater distance

US Patent for Production of thin film solar grade silicon on

Justia Patents Silicon, Boron, Or Phosphorus Produced US Patent for Production of thin film solar grade silicon on metals by electrodeposition from silicon dioxide in a molten salt Patent (Patent # 10,147,836) Production of thin film solar grade silicon May 31

10.1016/j.hydromet.2003.12.003

Processes embodying aspects of the present invention may be beneficial for recovering a variety of metals such as copper, gold, silver, nickel, cobalt, molybdenum, zinc, rhenium, uranium, rare earth metals, and platinum group metals from any metal-bearing

Crusher Extractive Process Of Copper With Copper Ore

Us3876516a Copper Electrowinning Process Google Patents A process and apparatus for electrowinning a high purity copper from an aqueous pregnant liquor acid electrolyte at high efficiency and high current density in the presence of impurities electrolyte is

US Patent for Production of thin film solar grade silicon on

Justia Patents Silicon, Boron, Or Phosphorus Produced US Patent for Production of thin film solar grade silicon on metals by electrodeposition from silicon dioxide in a molten salt Patent (Patent # 10,147,836) Production of thin film solar grade silicon May 31

(PDF) Gold Extraction and Recovery Processes For

The rich eluate solution that emerges from the elution process is passed through electrowinning cells where gold and other metals are precipitated onto the cathodes. After precipitation, the product is treated with dilute sulfuric acid to dissolve residual zinc and most of the copper (if any is present) [2].

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