Comprehensive Utilization of Iron Tailings in China

Li, Bing; Zhong-ying, Zhao; Li, Hongbo; Cheng, Hui‐Ming; Ma, Zhen

doi:10.1088/1755-1315/199/4/042055

Cited by 11 publications

(6 citation statements)

References 1 publication

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“…The length of the river is approximately 888 km [32]. It crosses the Inner Mongolia Plateau, the mountainous area of North China, and the North China Plain-flowing through 27 cities and counties [33]-and has rich mineral resources [42,43]. The climate in the northwest is temperate continental, while that in the southeast is temperate monsoon, with low temperature and rare precipitation in winter and elevated temperature and sufficient precipitation in summer.…”

Section: Study Areamentioning

confidence: 99%

Land Use and Climate Change Altered the Ecological Quality in the Luanhe River Basin

Zhang

Song

Fan

et al. 2022

IJERPH

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Monitoring and assessing ecological quality (EQ) can help to understand the status and dynamics of the local ecosystem. Moreover, land use and climate change increase uncertainty in the ecosystem. The Luanhe River Basin (LHRB) is critical to the ecological security of the Beijing–Tianjin–Hebei region. To support ecosystem protection in the LHRB, we evaluated the EQ from 2001 to 2020 based on the Remote Sensing Ecological Index (RSEI) with the Google Earth Engine (GEE). Then, we introduced the coefficient of variation, Theil–Sen analysis, and Mann–Kendall test to quantify the variation and trend of the EQ. The results showed that the EQ in LHRB was relatively good, with 61.08% of the basin rated as ‘good’ or ‘excellent’. The spatial distribution of EQ was low in the north and high in the middle, with strong improvement in the north and serious degradation in the south. The average EQ ranged from 0.58 to 0.64, showing a significant increasing trend. Furthermore, we found that the expansion of construction land has caused degradation of the EQ, whereas climate change likely improved the EQ in the upper and middle reaches of the LHRB. The results could help in understanding the state and trend of the eco-environment in the LHRB and support decision-making in land-use management and climate change.

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Section: Study Areamentioning

confidence: 99%

Land Use and Climate Change Altered the Ecological Quality in the Luanhe River Basin

Zhang

Song

Fan

et al. 2022

IJERPH

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“…The construction of highway engineering has higher requirements for roadbed materials. Under the premise of meeting environmental and construction technical requirements, through quality control during the construction process and monitoring of key points, stability of roadbed filled with tailings sand turned out to be good, which has obvious economic and social benefits [60].…”

Section: Used As Subgrade Fillingmentioning

confidence: 99%

Review of Research on Physical and Mechanical Properties and Engineering Application of Metal Tailings

Wang

Yan

Ke-min

et al. 2022

J. Phys.: Conf. Ser.

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Processing and storage requirements for metal residues are becoming stricter to achieve the carbon neutralization target. The physical and mechanical properties of tailings affect the stability of tailing dams. Metal tailings can be used as secondary resources, and it is easy to pollute the environment under poorly managed conditions. Therefore, it is necessary and urgent to reuse these deposits such as iron tailings, copper tailings, zinc tailings et al. This article discusses the current research on the mechanical properties of metal tailings and its engineering application. Based on previous research, it is pointed out that there still needs more attention on the mechanical properties of metal tailing sands, especially under different conditions like dry-wet, freeze-thaw, dynamic loads and large-scale application. In the future, research on the filling of metal tailings as roadbed and new building materials will be one of the directions to solve the problem of tailing pond accumulation.

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“…Iron ore tailing (IOT) is the mineral wastage which comes from the beneficiation process of iron ore [31][32][33]. The discharge amount of iron ore tailings is about 600 million tons per year in China [34]. However, the main treatment method of iron ore tailing is stacking by natural accumulation as few effective utilization measures has been employed [32,33,35].…”

Section: Introductionmentioning

confidence: 99%

Utilizing Iron Ore Tailing as Cementitious Material for Eco-Friendly Design of Ultra-High Performance Concrete (UHPC)

Shui

Gao

et al. 2021

Materials

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In this research, iron ore tailing (IOT) is utilized as the cementitious material to develop an eco-friendly ultra-high performance concrete (UHPC). The UHPC mix is obtained according to the modified Andreasen and Andersen (MAA) packing model, and the applied dosage of IOT is 10%, 20%, and 30% (by weight), respectively. The calculated packing density of different mixtures is consistent with each other. Afterwards, the fresh and hardened performance of UHPC mixtures with IOT are evaluated. The results demonstrate that the workability of designed UHPC mixtures is increased with the incorporation of IOT. The heat flow at an early age of designed UHPC with IOT is attenuated, the compressive strength and auto shrinkage at an early age are consequently reduced. The addition of IOT promotes the development of long-term compressive strength and optimization of the pore structure, thus the durability of designed UHPC is still guaranteed. In addition, the ecological estimate results show that the utilization of IOT for the UHPC design can reduce the carbon emission significantly.

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Comprehensive Utilization of Iron Tailings in China

Cited by 11 publications

References 1 publication

Land Use and Climate Change Altered the Ecological Quality in the Luanhe River Basin

Land Use and Climate Change Altered the Ecological Quality in the Luanhe River Basin

Review of Research on Physical and Mechanical Properties and Engineering Application of Metal Tailings

Utilizing Iron Ore Tailing as Cementitious Material for Eco-Friendly Design of Ultra-High Performance Concrete (UHPC)

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