A Lower Carbon Foot Print Process for Electrolytic Production of Metals from Oxides Dissolved in Molten Salts
A Lower Carbon Foot Print Process for Electrolytic Production of Metals from Oxides Dissolved in Molten Salts
复制标题
用溶解在熔盐中的氧化物电解生产金属的低碳足迹工艺
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
U. Pal
中科院分区：
文献类型：
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作者：
U. Pal
有一种减少碳足迹以抵消气候变化负面影响的社会动力。本文将概述固体氧化物膜（SOM）工艺的潜力，以生产能源密集型金属，如镁，钛和稀土直接从其氧化物溶解在非消耗性熔盐，通过电解，以较低的成本和较低的碳足迹相比，目前的工艺。在SOM工艺的一种配置中，金属在阴极产生，氧气在阳极放出。阳极封装在一端封闭的固体氧离子传导氧化钇稳定氧化锆（YSZ）管。本文将讨论用于溶解金属氧化物的熔融盐的选择程序和该过程的操作参数。影响选择过程的重要参数是熔点、氧化物的溶解度、挥发性、膜稳定性和金属溶解度。基于所选择的焊剂，确定操作参数，例如温度、施加的电势、电流密度和电极布置的设计。
There is a societal impetus towards lowering the carbon footprint to counteract the negative effects of climate change. This paper will outline the potential of the solid oxide membrane (SOM) process to produce energy-intensive metals like magnesium, titanium, and rare earths directly from their oxides dissolved in non-consumable molten salts, by electrolysis, at lower cost and with lower carbon foot print compared to the current processes. In one configuration of the SOM process, the metal is produced at the cathode and oxygen gas evolves at the anode. The anode is encased within a oneend-closed solid-oxygen-ion conducting yttria-stabilized-zirconia (YSZ) tube. The paper will discuss the procedure for the selection of the molten salt for dissolving the metal oxide and the operating parameters for the process. Important parameters that influence the selection process are melting point, solubility of the oxide, volatility, membrane stability, and metal solubility. Based on the flux selected, the operating parameters such as temperature, applied potential, current density, and design of electrode placement are determined.