Electrolytic preparation of high-purity chromium

Lei, Ke‐Wei; Hiegel, J.M.; Sullivan, T A

doi:10.1016/0022-5088(72)90067-7

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2013

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Cited by 13 publications

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“…There are several studies about the use of molten salt systems (chlorides and fluorides) in order to obtain chromium powder, but none of them have been exploited commercially [2,3]. Most of these works deal with the electro-refining of chromium produced by the aqueous route [4] or with the electroplating processes in molten salts [5,6].…”

Section: Introductionmentioning

confidence: 99%

Direct Electrolytic Reduction of Solid Cr2O3 to Cr Using SOM Process

Chen

Mao

2013

AMR

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A novel process of solid-oxide-oxygen-ion conducting membrane (SOM) technique has been investigated to produce Cr metal directly from Cr2O3 in molten CaCl2. The sintered porous Cr2O3 pellet was employed as the cathode while liquid copper, saturated with graphite powder and encased in a one-end-closed yttria-stabilized-zirconia (YSZ) tube, acted as the anode. The particle sizes and porosity of the cathode pellets are important factors that have significant impact on the electrolysis process. The optimal experimental condition is pellet forming pressure 4MPa, sintering and electrolytic temperature 1150°C, cell voltage 3.5V, electrolysis time 2h.

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