In 1976, a tailing dam collapse accident at the Xingping Lead–Zinc Mine in Guangxi Province, China, led to the spillage of mining wastewater and sludge into downstream agricultural lands in Side Village. Heavy metal concentrations, soil pollution and soil enzyme activity were analysed to understand the pollution characteristics of the agricultural lands …
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 distribution patterns of heavy metals with depth. Then, the pollution levels of heavy metals were analyzed based on the Nemerow comprehensive pollution ...
1. Introduction. The lead-zinc mineral resources are indispensable in industrial development and economic growth [1, 2], which has been widely used in the …
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 …
Consider using lead-zinc mine tailings as production building materials. The composition of lead-zinc tailings is similar to cement raw meal, which can partially replace clay, iron powder, and …
Total and DTPA-extractable concentrations of Pb, Zn, Cd and Cu in the tailings are shown in Table 2, and the results were similar to those obtained from an abandoned Pb/Zn tailings pond in New Mexico, USA (Sidle et al., 1991) and Shuikoushan Pb/Zn mine tailings, Hunan, China (Shu, 1997).Total concentrations of Pb, Zn, Cd and …
The tailings dam was reaching capacity for conventional wet tailings deposition and so Hindustan Zinc needed a way to resolve this issue. The solution they required would involve creating a small dry-stack tailings area with minimised environmental and physical footprint and also a method to backfill the mine by using an adjusted dry filter ...
Weathering of sulfide minerals is a major source of acid production in nature and especially in mining territories. Pyrite is not the only principal mineral that generates acid drainage: other sulfide minerals (sphalerite, galena, chalcopyrite, etc.) may also be responsible for acid production.In addition to massive sulfide minerals, sulfide-bearing …
According to the different compositions and properties of lead-zinc tailings in different areas, many mineral processing plants adopted different means to deal with lead-zinc tailings. For those ...
Tailings Dam Construction Design. of slime is likely to slide and cause the dam to break away. The procedure usually adopted in such cases is to separate the tailing into coarse sand and fines in a classifier, and to use the coarse product to build up the wall ; the remainder of the pulp is discharged into the interior of the dam.
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 …
Emergency tailing ponds constructed in response to the 2015 Gold King Mine Spill in Colorado, pictured on August 7, 2015. The ponds were constructed to contain a spill created by EPA workers ...
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
Wang et al. (2018) examined the development of an ultra-high-performance concrete (UHPC) sample using a combination of lead-zinc mine tailings. Lead-zinc mine tailings (by weight) were used as a substitute for 10, 20, 30, and 40% of cement, and their effect on fresh and hardened UHPC behaviors was studied.
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 …
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) …
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 …
The 2019 mining disaster in Brazil is expected to lead to a double-digit jump in costs to insure U.S. tailings dams that store mining waste against liability for environmental catastrophes.
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 ...
Tailings comprise the solid waste after the separation and enrichment of ore resources (Chen et al., 2014).Over the past few years, tailings have been commonly used for the backfilling of mining areas, re-soiling and construction materials (as concrete, bricks and cement etc.) (Chen et al., 2018).However, the comprehensive utilization of tailings …
The potential to reduce the risks posed by tailings dams using satellite-based information. International Journal of Disaster Risk Reduction, 38 (2019), p. 101209. ... Recycling of harmful tailings lead-zinc mine tailings and fly ash for preparation of inorganic porous ceramics. Ceramics International, 43 (6) (2017) ...
This paper reviews these factors, covering the characteristics, types and magnitudes, environmental impacts, and remediation of mine tailings dam failures. Previous. 1. Introduction. Modern society could not function without the products of the …
The tailings dam of the abandoned lead–zinc mine is located in Zixing City, Hunan Province, South-Central China, adjacent to County Road X023, and there is a river flowing through on one side of …
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.
Large tailings dams, which are built to contain mining waste and are among the largest dams and structures in the world, must stand in perpetuity. Experience shows that a catastrophic release of tailings can lead to long-term environmental damage with …
In the first place, we aimed to assess the pollution level of heavy metals in soils at tailings dams' in the mine waste dumpsites of Kitwe and Mufulira, Zambia, and further assess progress of ...
Barry County Lead and zinc mining in Barry County occurred primarily in the 1880s through 1890s, with some production in the 1910s, 1930s and 1940s (IMOP database). There was likely unrecorded production in the 1930s. The primary lead and zinc mining area was the Purdy mines area, located east of the town of Purdy. The mines …
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 …
Large quantities of lead/zinc (Pb/Zn) mine tailings were deposited at tailings impoundments without proper management, which have posed considerable risks to the local ecosystem and residents in mining areas worldwide. ... The tailings are generally deposited on-site in impoundments, also referred as tailings dams and tailing …
Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by …
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