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From Recycled Machining Waste to Useful Powders for Metal Additive Manufacturing Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Distribution and Chemical Species of Chromium in the EAF Dust from Stainless Steel Plant

Authors : Zhi Li, Guojun Ma, Xiang Zhang

Published in: REWAS 2019

Publisher: Springer International Publishing

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Abstract

Electric Arc Furnace (EAF) dust generated in the production process of stainless steel is a hazard to the environment and human health due to its large amounts of toxic substances, such as Cr(VI). Cr in the EAF dust is mainly in the form of a residue according to sequential extraction procedure test, and only small amounts of Cr are mobility. Although the formation mechanism of the EAF dust has been gradually understood, the distribution and chemical species of Cr in EAF dust are rarely studied. In this paper, the distribution and chemical species of Cr in EAF dust were studied. The results show that Cr(III) and Cr(VI) are mainly present in the small particles. After sputtering about 140 s with Ar+ ion beam, the Cr(VI) on the surface of dust particles disappears, and the content of Cr(III) reaches 100%, indicating the Cr(VI) in the EAF dust comes from the oxidation of lower valent Cr-containing substances and enrich on the surface of the dust particles.

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previous chapter Cobalt Criticality and Availability in the Wake of Increased Electric Vehicle Demand: A Short-Term Scenario Analysis
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Metadata
Title
Distribution and Chemical Species of Chromium in the EAF Dust from Stainless Steel Plant
Authors
Zhi Li
Guojun Ma
Xiang Zhang
Copyright Year
2019
Book
REWAS 2019

Print ISBN: 978-3-030-10385-9

Electronic ISBN: 978-3-030-10386-6

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-030-10386-6_43

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