Evaluation of major constraints to revegetation of lead/zinc mine
The residues from the extraction of lead/zinc (Pb/Zn) ores of most Pb/Zn mines are permanently stored in tailings ponds, which require revegetation to reduce their environmental impact. This can only be done if the main constraints on plant establishment are evaluated. This can readily be done by fi …
APSN | Proposed tailings dam for Indonesian zinc mine …
— DPM plans to ship, process and sell the lead and zinc from the mine to China. But experts say the dam is so unsafe that its construction would be illegal in China, which last year limited the number of new tailings dams and shut down older ones because of fears about safety and pollution.
Pollution Level, Ecological Risk Assessment and Vertical …
and ecological risk of heavy metals in an abandoned lead–zinc mine tailings dam, this study first employed X-ray fluorescence analysis to determine the vertical distribution patterns of heavy met-
Using tailings to get to net zero
— "If you're frozen 10 months a year like in the Arctic, direct air capture systems are harder to operate," Dipple says. (In addition to strong climate controls, CarbMin Lab's work so far has also shown that water is necessary to drive the reaction – but too much water can inhibit it.)I n 2019, a pilot test was completed at Gahcho Kué using 250 kg of …
How to Prevent Flow Failures in Tailings Dams | Mine Water …
— Based on research carried out at 67 tailings dams in Spain: (1) tailings dams contain alternating sedimentary layers with contractive and dilative geomechanical behaviours; (2) tailings saturate quickly but drain more than 10 times slower due to the high-suction capacity of the porous sediments (2–300 MPa); and (3) over the long-term, a …
In-situ stabilization/solidification of lead/zinc mine tailings …
— The improper stockpiling of lead/zinc mine tailings results in significant toxic impurities releasing, which threatens both the surrounding environment and human …
Research Status and Prospects for the Utilization …
— Lead–zinc tailings are the typical solid wastes in mines with high yield and low utilization rates in some countries at present. They are mainly stockpiled in tailings reservoirs, occupying massive land …
Tailings
— Tailings are the waste materials left after the target mineral is extracted from ore. They consist of crushed rock; water; trace quantities of metals such as copper, …
Global-scale impact analysis of mine tailings dam failures: …
— Of the tailings dam incidents of lead ore mines, 65% (n = 11) cases corresponded to the upstream raise dam design. The downstream dam design was the second most common type, which was noticeable for copper, gold, silver, coal, and phosphorous ore mines. Although the centerline raise dam type was considered safer …
Boliden to expand Tara zinc mine's tailings dam in Ireland
— Boliden to expand Tara zinc mine's tailings dam in Ireland. ... The new deposits found at the mine exhibit inferred mineral resources that totals ten million tonnes, offering a zinc grade of 8.5% and a lead grade of 1.8%. Located at depths of 1,200m and 1,900m, the structure of the mineralisation is more complicated than earlier deposits. ...
Advanced monitoring of tailings dam performance using …
— Tailings dams, designed to retain the waste by-products of mining, are among some of the largest engineered structures in the world 5; there are an estimated 8100 tailings facilities worldwide 4.
13SAFETY_GUIDANCE_TAILING_DAMS_Geneva_2008
tailings dam failure of the Los Frailes lead-zinc mine at Aznalcóllar near Seville, Spain, released 4-5 million cubic meters of toxic tailings slurries and liquid into nearby Río …
Dairi Lead-Zinc Project in Sumatra, Indonesia
— Dairi Prima Mineral is planning to build an underground mine to extract zinc, lead and silver ore that will create millions of cubic meters of toxic tailings in one of the world's highest earthquake risk zones in Sumatra. ... the remaining millions of cubic meters of toxic waste would be stored in a tailings dam that the company says will be ...
Mine tailings dams: Characteristics, failure, environmental impacts
— Tailings are mixtures of crushed rock and processing fluids from mills, washeries or concentrators that remain after the extraction of economic metals, minerals, mineral fuels or coal from the mine resource (e.g., Fig. 1 a; Hudson-Edwards et al., 2001, Younger and Wolkersdorfer, 2004, Lottermoser, 2007).The word 'tailings' is generic as it …
Stabilization of heavy metals from lead-zinc ore tailings …
— The mining and processing of lead-zinc ores produce many lead-zinc ore tailings, which can cause harm by releasing toxic metal ions to the environment. Therefore, the leaching characteristics, acid generation capacity, and fractions of released heavy metals from two Pb-Zn tailings, one from Guangxi designated as F and another from …
(PDF) Pollution Level, Ecological Risk Assessment and …
— To analyze the pollution level and ecological risk of heavy metals in an abandoned lead–zinc mine tailings dam, this study first employed X-ray fluorescence analysis to determine the vertical ...
Spatial distribution and environmental …
— Study site. The investigated tailings impoundments (Fig. 1) are positioned in the typical lead-zinc mining area of South China, whose geographical coordinates are situated between 113° 39′ 47″–113° 40′ 1″ …
Technical Report: Design and Evaluation of Tailings …
engineering design of tailings dams in other mining industry sectors, for both stability and environmental performance. For instance, experience gained with leach pad liners is being transferred to linings for tailings ponds, and the use of synthetic lining materials is growing (although use of liners is still far from being the industry norm).
An extensive review on restoration technologies for mining tailings
— For example, catastrophic failure of the Buffalo Mine tailings dam in West ia, USA, resulted in the death of 125 people and more than 4000 people losing their homes in 1972 (Orendorff 2009). 3) ... Lead-zinc mine tailings have high contents of Pb and Zn while Cd and Ni contents are generally low. Copper tailings have a high concentration ...
Study on the feasibility of reusing the tailings of Huangyan …
There are some valuable lead-zinc minerals in the tailings of Huangyan Lead-Zinc Mine. Through the experimental study of differential flotation, isoflotability flowshee and bulk …
Mine tailings dams: Characteristics, failure, environmental …
— To set the scene, we first describe the characteristics of tailings and of construction of tailings dams, and the common causes of their failure. We conclude with …
Tailings Dams: Where Mining Waste is Stored …
— Imagine a big hole in the ground, similar to the one pictured above. Now imagine that pit filled with up to 10 billion tons of mining waste.
Tailings.info Los Frailes tailings dam failure
Los Frailes, Aznalcollar, Spain. Figure A: The almost sealed embankment that failed at Los Frailes. Introduction. Minas de Aznalcóllar is located near the town of Aznalcóllar in southwestern Spain and approximately 40 km west of the large city of Sevilla ().It is within the Iberian Pyrite Belt which has a well known mining district for at least a few millennia.
Mineralogical and geochemical characterization of the …
Boquira mine tailings' sampling The former lead–zinc otation plant from the Boqueira mine was fed with ore from a deposit without large heterogeneity. The tailing dam of this former plant was sampled at several points (samples of about 2–5 kg), and the resulting samples were homogenized and a composite sample was used in the
Utilization of modified copper slag activated by Na2SO4 and …
— Serious heavy metals pollution was characterized in the lead/zinc mine tailings dam and surrounding soils, as well as copper slag disposal sites. This study investigates the efficacy of modified granulated copper slag (MGCS) as a partial replacement of ordinary Portland cement (OPC) for lead/zinc mi …
Remediation of grassland subsidence and reduction of land …
— Taking a Lead-Zinc mine in Inner Mongolia as an example, this paper introduces the use of tailings backfill technology to solve the problems of surface subsidence due to mining activity, including the following contents: (1) investigation and three-dimensional modeling of underground goaf and surface subsidence area, (2) …
Dairi Prima Mineral Zinc Mine
— Health & Safety: The mine site and associated tailings dam are located in an area that is one of the most active earthquake zones in the world. The site is approximately 14 kilometres from the Great Sumatran Fault. ... Pollution: Lead-zinc mines are among the most high-risk types of mine in terms of pollution, as the mining process produces ...
Utilization of lead–zinc mine tailings as cement substitutes …
— In the present study, the lead-zinc mine tailings were prepared from Iranian mines. The first type of mine tailings (T 1) with very low sulfide content (0.4%) was prepared from Tiran lead-zinc mine located in Isfahan province.The second type of mine tailings (T 2) with high sulfide content (19.9%) was prepared from Kooshk lead-zinc mine located in …
Socio-Environmental Risks Linked with Mine Tailings …
— 1.1. What Are Mine Tailings? An Initial Scope in an Uncertainty and Complex World. The initial step in mineral processing involves crushing and grinding ore to produce a suitable particle size for further metallurgical processing using physical and chemical separation methods [].Physical separation processes take advantage of the …
Technical Report: Design and Evaluation of Tailings …
The next section of this report provides an overview of the various methods used to dispose of mine tailings and the types of impoundments that are used. Section 3 describes the …
Mine tailings-based geopolymers: A comprehensive review
— The mine tailings are inhomogeneous and have a complex mineral, aggregate, and chemical composition [59, [109], [110], [111]].Furthermore, although having relatively low quantities of valuable components, mine tailings contain hazardous and toxic compounds connected with waste products or mining activities [82, 84, [112], [113], …
A framework for a sustainable approach to mine tailings …
— Sustainable development principle in mine disposal waste by minimising inputs such as water and energy (Franks et al., 2011) is also covered by those pillars above particularly in environmental and economic pillars.In a condition where the final tailings product has been treated such as by dosing with lime to raise the pH, the sustainability …
Geo-engineering properties of zinc mine tailings
The geotechnical properties of the mine tailings must be understood in order to construct more environmentally-friendly tailing ponds, and to further improve the efficiency of …
Utilization of tailings in cement and concrete: A review
The tailings are also very diverse in mineral phases even in the lead-zinc tailings. Figure 2 presents the XRD pattern of lead-zinc tailings coming from different resources. Previous research [] reveals that the mineral phases of the lead-zinc tailings include calcite, dolomite, quartz, kaolinite, galena, pyrite and gypsum, whereas other research [] exhibits that …
Natural Colonization of Plants on Five Lead/Zinc Mine Tailings …
— Mine tailings can have a specific assemblage of plant species due to their unique physicochemical properties, and this process can be important in developing ecological theory and restoration practice. Physicochemical properties and natural colonization of plants on five lead/zinc (Pb/Zn) mine tailings in southern China were …
In-situ stabilization/solidification of lead/zinc mine tailings …
— 1. Introduction. The lead-zinc mineral resources are indispensable in industrial development and economic growth [1, 2], which has been widely used in the electrical, metallurgical, and pharmaceutical industries [3].However, the environmental impacts of these resources' excavation and subsequent beneficiation have been ignored …