Fabrication of a Nanosize Hematite Pigment via Waste Ferrous Sulfate Recycling Using Sulfur Reduction

Ye Wang, Genkuan Ren, Bing Jiang, Lin Yang, Zhiye Zhang, Xinlong Wang, Yanjun Zhong, Zhiyuan Chen, Xiushan Yang*, Kazuki Morita, Wenhui Ma

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

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    Nanometer-sized hematite was prepared via a two-step process. In the first step, FeSO4·7H2O was oxidized to Fe2(SO4)3 by oxygen in an acidic solution. In the second step, the Fe2(SO4)3 was reduced to nanosize hematite with sulfur vapor at 550 °C. The hematite has good thermal stability up to 500 °C and good colloid stability in water-based paint. Its properties satisfy the requirements of the international standard ISO 1248-A-I-1-a for an iron oxide red pigment. Graphical abstract: [Figure not available: see fulltext.]

    Original languageEnglish
    Pages (from-to)22-28
    Number of pages7
    JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
    Issue number1
    Publication statusPublished - 2022

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