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electrorefining

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003169
EISBN: 978-1-62708-199-3
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001115
EISBN: 978-1-62708-162-7
... in question, commercial purity usually means a purity between 99.0 and 99.95%. Commercial-purity metal can be prepared by a variety of processes, of which such electrolytic processes as electrowinning and electrorefining are among the most common. In both of these processes, metal is deposited...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006087
EISBN: 978-1-62708-175-7
... so that a powdery or spongy material is deposited on lead antimonial cathodes instead of the smooth, adherent deposit desired in electrorefining. Formation of powder deposits is facilitated by low copper ion concentration and high acid content in the electrolyte. High cathode current density and use...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003599
EISBN: 978-1-62708-182-5
... sulfuric acid and hydrochloride acid solution, are pumped continuously through the cathode compartment. The electrorefining process also facilitates the recovery of precious metals and other metals of value from anode slimes. Lead Electrochemical Refining Industrial Practice Most lead...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006139
EISBN: 978-1-62708-175-7
... the same electrochemical principles that apply to the electrorefining of copper. The conditions of deposition, however, are changed to yield a powdery or spongy deposit instead of the strongly adherent product desired in electrorefining. The formation of powdery deposits is favored by low copper ion...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001086
EISBN: 978-1-62708-162-7
... to yield beryllium and magnesium fluoride (MgF 2 ). The primary beryllium is in the form of pea-to-marble-sized pebbles. The electrowinning of beryllium by fused-salt electrolysis of beryllium chloride (BeCl 2 ) from a variety of low-melting-point baths is possible, as is the electrorefining...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001258
EISBN: 978-1-62708-170-2
... was first observed as a result of exposure to nickel-containing solutions in electrorefining of nickel. Today most electroplaters are aware of “nickel itch” but have never seen a case of it. The reason is that, despite increasing use of nickel-containing products, industry has adopted work practices...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006078
EISBN: 978-1-62708-175-7
.... , “Titanium Metal Production via Oxycarbide Electrorefining,” Titanium 2012, International Titanium Association Conference , Oct 7–10, 2012 ( Atlanta, GA ) 15. Chen G.Z. , Fray D.J. , and Farthing T.W. , Direct Electrochemical Reduction of Titanium Dioxide to Titanium in Molten...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001084
EISBN: 978-1-62708-162-7
.... In this process, the sponge metal is reacted with iodine in an evaluated and sealed vessel; the resulting metal iodide is decomposed on an electrically heated wire, forming large metal crystals. The other refining methods are electron beam melting, molten salt electrorefining, and zone refining. Melting...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.a0005727
EISBN: 978-1-62708-171-9
... only weakly to the cathode. The product particle size is determined by the electrodeposition parameters. Electrorefining ( Ref 23 , 24 ) and electrowinning also involve electrolysis methods where coarse-grained, rough, and adhesive deposits are manufactured. Powders that evolve from these methods...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006483
EISBN: 978-1-62708-207-5
Book Chapter

By John C. Bittence
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003222
EISBN: 978-1-62708-199-3
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001118
EISBN: 978-1-62708-162-7
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003147
EISBN: 978-1-62708-199-3
... concentrate. Electrolytic Processes Electrorefined and electrowinning both are electrolytic processes used to produce pure nickel cathode sheet. In the former process, a nickel electrolytic refining cell consisting of a slab of crude nickel to be refined (anode) and a thin nickel starting sheet...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003085
EISBN: 978-1-62708-199-3
... by or on a system is limited to pressure/volume terms. Any energy contributions from electric, magnetic, or gravitational fields are neglected, except for electrowinning and electrorefining processes such as those used in the production of copper, aluminum, magnesium, the alkaline metals, and the alkaline earth...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006484
EISBN: 978-1-62708-207-5
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001242
EISBN: 978-1-62708-170-2
... Baths Electrodeposition of copper from acid baths is used extensively for electroforming, electrorefining, and decorative electroplating. Acid copper plating baths contain copper in the bivalent form and are more tolerant of ionic impurities than alkaline baths. They also have less macro throwing...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003580
EISBN: 978-1-62708-182-5
... is in the passivation region ( Fig. 1 ). Diagrams such as Fig. 1 , ( Ref 1 , 2 , 3 , 4 ), have proved to be useful in corrosion as well as in many other fields, such as industrial electrolysis, plating, electrowinning and electrorefining of metals, primary and secondary electric cells, water treatment...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003215
EISBN: 978-1-62708-199-3
.... (e) At 6 V, the bath draws approximately 0.3 A/L (2 A/gal) through the solution. At 12 V, the bath draws 0.4 A/L (3 A/gal) Acid Plating Baths Electrodeposition of copper from acid baths is used extensively for electroforming, electrorefining, manufacturing of copper powder, and decorative...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001287
EISBN: 978-1-62708-170-2