Molten-salt enhanced anodic oxidation for upcycling alloy scraps
Source abstract
Abstract
Reclaiming valuable metals from spent alloys involves energy-intensive pulverization and the sluggish dissolution rate. Herein, we propose an enhanced corrosion strategy to convert alloy scraps to oxide powders. The oxidation rate reaches ~1.67 mm h −1 in molten CaCl 2-NaCl-CaO at 700 °C because Cl - excludes passivation and enables continuous oxidation. In addition, the soluble CaO in molten CaCl 2 -NaCl prevents the generation of transition metal chlorides, which relieves using the expensive ion-selective membrane to eliminate the parasitic reaction. Overall, the molten salt enhanced anodic corrosion provides a green and general way to achieve the pulverization and oxidation of various alloy scraps.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Recycling and Waste Management Techniques · Bauxite Residue and Utilization · Molten salt chemistry and electrochemical processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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