Environmental risk assessment method for dense tailings ponds areas – a case study of the Yellow River Basin of Henan Province, China DOI
Han Wang, Mengshuo Liu,

Huiyuan Jiang

et al.

Human and Ecological Risk Assessment An International Journal, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 22

Published: Dec. 19, 2024

Tailings ponds are the final storage site for tailings associated with mine extraction and hydrometallurgical processing, a major source of environmental risk. This study establishes comprehensive evaluation method risk in region proposes identification key factors. According to indicator scores weights, index reservoirs can be calculated, and, based on this index, level categorized into four classes(low, medium, high, super high). The highest first three indicators is recognized as factor. Subsequently, Yellow River Basin Henan Province was evaluated. gradually increases from north south. because higher total number impoundments south, excessive proximity rivers, so on. northern medium-low area centered Jiyuan southern medium-high Luanchuan have been observed. These results provide critical decision support prevention control tailing pond risks.

Language: Английский

Pulling nutrients from Mo-polluted soil by arbuscular mycorrhizal fungi extraradical mycelia is quenching thirsty with poison DOI
Mengge Zhang,

Zhaoyong Shi,

Jiakai Gao

et al.

Plant Physiology and Biochemistry, Journal Year: 2025, Volume and Issue: 220, P. 109488 - 109488

Published: Jan. 7, 2025

Language: Английский

Citations

0
The Formation Process and Mechanism of Total Activated Potassium During the Preparation of Si–Ca–K–Mg Fertilizer from Molybdenum Tailings DOI Open Access

Tuanliu Hu,

Yifan Li,

Aihua Xiang

et al.

Minerals, Journal Year: 2025, Volume and Issue: 15(5), P. 450 - 450

Published: April 26, 2025

Silicon–calcium–potassium–magnesium fertilizer (Si–Ca–K–Mg fertilizer), a critical acidic soil conditioner for remediating polluted soils, encounters significant challenge: substantial potassium loss through flue gas during high–temperature calcination, which increases production costs. This study optimized the blending ratio of molybdenum tailings (MTs) with CaCO3 and CaSO4, systematically investigating interplay between clinker–soluble potassium, volatile loss, total activated content calcination. Key findings include large–scale utilization tailings; mass mMTs:mCaCO3:mCaSO4 = 1:0.5:1.0 leads to K2O 3.05 wt.%. Enhancing nutrient efficiency by increasing proportion additives (with 1:0.7:0.4) results in 4.50 wt.%, is 1.5 times national standard. Mechanistically, calcination decomposes feldspar (K–feldspar) into leucite SiO2. CaO derived from reacts SiO2 form calcium silicate, facilitating decomposition water–soluble kaliophilite. Simultaneously, thermal diffusion promotes ion exchange Ca2+ CaSO4 K+ leucite, thereby forming sulfate. However, part this sulfate, along some kaliophilite, volatilizes at high temperatures, contributing loss. Recycling lost back fertilizers enables complete utilization. work establishes robust framework efficiently producing Si–Ca–K–Mg tailings, addressing key challenges retention resource recycling industrial synthesis.

Language: Английский

Citations

0
Sustainable approaches to tailings remediation: Role of organic fertilizers DOI
Chaofan Li,

Haoxuan Cai,

Yuqing Liu

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: unknown, P. 121454 - 121454

Published: March 1, 2025

Language: Английский

Citations

0
Experimentation of Heat-Insulating Materials for Surrounding Rocks in Deep Mines and Simulation Study of Temperature Reduction DOI Open Access
Hongwei Deng,

Yuanzhe Xiao

Minerals, Journal Year: 2024, Volume and Issue: 14(9), P. 938 - 938

Published: Sept. 13, 2024

With the increasing depletion of shallow resources, mining has gradually shifted to deeper levels, and high-temperature problem deep restricted efficient safe development mining. In this study, five types thermal insulation materials for surrounding rocks with different ratios were produced using tailings, P.O.32.5 clinker, aluminum powder, glass beads, quick lime, slaked lime as test materials. Based on uniaxial compression test, constant analysis numerical simulation technology, change rule mortar compressive strength conductivity was analyzed, cooling effect surrounding-rock discussed. The results showed that ranged from 0.39 0.53 MPa, 0.261 0.387 W/(K·m), ratio E being largest A lowest. results, layer thickness taken a value 10 cm when, at time, best economic benefits involved temperature reduction 0.9 K. case changing inlet wind speed, original rock also very clear, maximum reductions 0.92 K, 1.42

Language: Английский

Citations

1
Environmental risk assessment method for dense tailings ponds areas – a case study of the Yellow River Basin of Henan Province, China DOI
Han Wang, Mengshuo Liu,

Huiyuan Jiang

et al.

Human and Ecological Risk Assessment An International Journal, Journal Year: 2024, Volume and Issue: unknown, P. 1 - 22

Published: Dec. 19, 2024

Tailings ponds are the final storage site for tailings associated with mine extraction and hydrometallurgical processing, a major source of environmental risk. This study establishes comprehensive evaluation method risk in region proposes identification key factors. According to indicator scores weights, index reservoirs can be calculated, and, based on this index, level categorized into four classes(low, medium, high, super high). The highest first three indicators is recognized as factor. Subsequently, Yellow River Basin Henan Province was evaluated. gradually increases from north south. because higher total number impoundments south, excessive proximity rivers, so on. northern medium-low area centered Jiyuan southern medium-high Luanchuan have been observed. These results provide critical decision support prevention control tailing pond risks.

Language: Английский

Citations

0