Traditional
industrial pure iron can no longer meet the requirements
of many core industries, such as aerospace, electronic information,
and military industries. Thus, high-purity iron has attracted considerable
interest. Pyrometallurgy, hydrometallurgy, and electrometallurgy provide
extensive research platforms for purifying and developing novel processes
for producing high-purity iron. In this paper, we review latest research
advances in high-purity iron purification methods and production processes
and summarize the merits of each purification method. Moreover, we
propose a production process that ensures the production of high-purity
iron while reducing carbon emissions. In this process, iron ore is
leached using a hydrometallurgical process, high-purity iron is obtained
by electrolysis from clean energy sources, such as photovoltaics and
wind power, and the purity of iron is increased to over 5N with a
pyrometallurgy process.
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