邯邢铁矿尾矿中元素的粒度效应和形态分布特征:资源和环境意义

doi:10.11720/wtyht.2025.2422

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Abstract

Despite bearing valuable recyclable elements, mine tailings pose environmental risks. However, there is a lack of studies on the geochemical characteristics of tailings in China and abroad, hindering their appropriate treatment and reuse. This study collected tailing samples from the Han-Xing Iron deposit in Hebei Province, China and conducted the analysis and tests of these samples. This study determined the concentrations and chemical speciation (i.e., exchangeable, carbonate-bound, Fe-Mn oxide-bound, organic-bound, and residual forms) of elements including Fe, Co, S, Cu, and Zn in tailing particles with varying grain sizes. Accordingly, it explored the implications for the exploitation and utilization of tailing resources, along with the assessment of environmental risks. This study provides deeper insights into the geochemical characteristics of tailings, producing positive impacts on the exploitation and utilization of tailing resources, as well as the prevention of environmental risks.

Key words： mine tailing Han-Xing Fe deposits grain size effect chemical speciation resource and environment

Received: 08 October 2023 Published: 22 April 2025

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	Hao CHANG
	Zhao-Xian YUAN

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Hao CHANG,Zhao-Xian YUAN. Grain size effect and chemical speciation of elements in tailings from the Han-Xing iron deposit: Implications for resource utilization and environmental protection[J]. Geophysical and Geochemical Exploration, 2025, 49(2): 470-478.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2025.2422 OR https://www.wutanyuhuatan.com/EN/Y2025/V49/I2/470

Pictures of tailings from Han-Xing Fe deposits
a—the tailings pond of Houjin, Xishimen; b—the tailings pond of Jianshanbei, Beiminghe; c—the tailings pond of Xisizhuang; d—strat-ification of coarse and fine tailings

Statistics of element contents in tailing samples from Han-Xing Fe deposits

Granular composition of tailing samples from Han-Xing Fe deposits

Comparison of element contents in tailings with different particle sizes

Chemical speciation of important elements in tailings with different particle sizes

Comparison of elemental migration potential in tailings with different particle sizes

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