The salt extraction process: a novel route for metal extraction Part I – Cr, Fe recovery from EAF slags and low grade chromite ores
The salt extraction process: a novel route for metal extraction Part I – Cr, Fe recovery from EAF slags and low grade chromite ores
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盐提取工艺：金属提取的新途径第一部分——从电炉渣和低品位铬铁矿矿石中回收铬、铁
DOI：
10.1179/037195509x12585446038726
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
S. Seetharaman
中科院分区：
文献类型：
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作者：
Xinlei Ge;O. Grinder;S. Seetharaman
目前的工作是对在800-950°C的温度范围内使用熔盐从炉渣、低品位矿石和其他氧化材料（如废耐火材料）中提取金属价值的工艺路线的研究的一部分。本文研究了从电弧炉炉渣和铬铁矿中回收金属价值，主要是铬和铁，并研究了温度、保温时间、助熔剂含量和助熔剂/渣质量比等因素对渣溶出的影响。根据优化后的实验因素，在2.8 V的电压下电解从渣/矿石中提取的含金属值盐浴。对阴极镀层进行了SEM/EDS和XRD分析，证实了CrFe合金的形成。结果表明，熔盐萃取工艺为从矿渣和低品位矿石中回收金属价值提供了一条有前途的途径。
The present work is part of an investigation towards the development of a process route for the extraction of metal values from slag, low grade ores and other oxidic materials such as spent refractories using molten salts in the temperature range 800–950°C. The present paper focuses on the recovery of metal values, primarily Cr and Fe, from electric arc furnace slag and chromite ore. The impact of different factors to the dissolution of slag, such as temperature, holding time, flux content and weight ratio of flux/slag was studied. Based on the optimised experimental factors, the salt bath containing metal values extracted from the slag/ore was electrolysed under an applied voltage of 2·8 V. The cathode deposit was subjected to SEM/EDS and XRD analyses, which confirmed the formation of CrFe alloy. The process was also extended towards the production of CrFe alloy directly from chromite ore. The results show that the molten salt extraction process offers a promising route towards the recovery of metal values from slags and low grade ores.