Written in EnglishRead online
|Statement||by Leslie J. Finnegan.|
|Contributions||University College Dublin. Department of Zoology.|
|The Physical Object|
|Pagination||(15), 170, (ca.50)p. :|
|Number of Pages||170|
Download Lead/zinc tailings ponds in contrasting environments
Most tailings have been left in tailing ponds or mine sites without treatment. These have a long-term potential threat to engineering and environmental (Falagán et al., ).
Mine tailings contain many sulfide minerals, and sulfide minerals are a combination of sulfide with metals (iron, copper, nickel, lead and zinc).Cited by: The Lechang lead/zinc mine is located in the north part of Guangdong Province, southern China.
The tailings residue from the extraction of lead/zinc ores was permanently stored in tailings ponds, which required revegetation to reduce the environmental by: 1. Introduction. Mine tailings produced from the mining activities are the major solid wastes in China and are of environmental concern due to potential hazards of surface or groundwater pollution (Shu et al., ).Pyrite bearing mine tailings disposed of at neutral or slightly alkaline conditions can weather within months or few years to produce extreme acidity and lead to acid mine Cited by: Since lead-zinc ores are dressed.
Finally, during the flotation cycle lead and zinc concentrates are produced. The final technological processing waste precipitates in tailing pond. This paper presents the geotechnical properties of the zinc/lead mine tailings from Tara Mines in County Meath, Ireland. The coarser and finer materials from the mechanical crushing and grinding.
In China, the total lead–zinc tailings are approximately – million tonnes and increase at a rate of % per year with the rapidly increasing demand of lead and zinc. Lead–zinc tailings mainly contain sulfide with a sulfur content reaching –% , which will stimulate acid mine drainage (AMD) and cause serious pollution.
The Lechang lead/zinc mine is located Lead/zinc tailings ponds in contrasting environments book the north of Guangdong Province in southern China. The residual tailings from the extraction of lead/zinc ores were permanently stored in tailings ponds which required revegetation to reduce their impact on the environment.
Lead–zinc mine tailings, mainly contain sulfide mineral, are generated during the production of lead and zinc oxide and that potentially form acid and sulfate in the condition of water and oxygen.
The acid and sulfate will accelerate the leaching of some heavy metals such as Pb, Zn, Cr, Cd, Ni and Mn from the tailings. The small tailings particles can easily be spread out of the tailings ponds to the surrounding environment because of erosion driven by rain water and strong wind. the food chain in different.
Los Frailes, Spain: Poor design led to this failure, in which a meter (mile) section of the dam’s wall collapsed, sending acidic water containing sulfur, zinc, copper, iron and lead.
Removal of Sulfate, Zinc, and Lead from Alkaline Mine Wastewater Using Pilot-Scale Surface-Flow Wetlands at Tara Mines, Ireland January Mine Water and the Environment 23(2) The goal of recycling lead–zinc tailing (LZT) as cemented paste backfill (CPB) is to eliminate two current major problems faced by lead–zinc mining: specifically, (1) the instability of the mine in the mining process [8,9,10,11,12,13]; and (2) the ecological damage caused by the accumulation of tailings.
Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain.
Mine tailings, consisting of process effluents that are generated in a mineral processing plant, are. The unconfined compressive strength (UCS) development of cemented backfill materials for lead-zinc mine tailings with sulphide was studied. The results showed that the UCS of the cemented backfill body with ordinary Portland cement (OPC) as binder decreased in the later curing days, regardless of particle size.
Under the same conditions, the higher the OPC content, the higher the UCS of the. 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.
Effect of Earthworm(Pheretima sp.) Density on Revegetation of Lead/zinc Metal Mine Tailings Amended with Soil. Chinese Journal of Population Resources and Environment: Vol.
6, No. 2, pp. Heavy metal pollution from mining tailings has become a serious concern in China. Here, we quantitatively evaluated the accumulation status and environmental risk of the tailings impoundments located in a typical Pb-Zn mining area in Guangdong Province, South China.
The distributional characteristics of the heavy metals in the tailings impoundment area were analyzed. Mine waste sediments were sampled following a diagonal transect across tailings dams, overburden dump sites and the local forest soil from the top layer (0–20 cm) using a closed auger.
Samples were analyzed for arsenic, barium, lead, cadmium, cobalt, copper, chromium, nickel, vanadium, and zinc as well as for soil physico-chemical properties. Before the new tailings pond construction completed inthere are tons of tailings with recoverable tailing with high gold content in the old tailings pond.
The gold content is about kg, and the silver content about 25 tons. Xinhai carried out industrial practice in handling tailings with the original tpd CIP plant.
Tailings disposal sites in arid and semiarid environments are especially subject to eolian dispersion and water erosion. Phytostabilization, the use of plants for in situ stabilization of tailings and metal contaminants, is a feasible alternative to costly remediation practices. In this review we emphasize considerations for phytostabilization.
Lead and zinc mining in Barry County occurred primarily in the s through s, with some production in the s, s and s (IMOP database). There was likely unrecorded production in the s. The primary lead and zinc mining area was.
Habashi./ Journal of Mining & Environment, Vol.2, No.1, 19 makes use of differences in a physical or a physico-chemical property. The waste from this operation is known as tailings. becoming common to improve the landscape. Figure 2. Emissions and waste disposal problems in.
concentrations of dissolved iron, aluminum, lead, copper, and zinc, especially if snowmelt and rain pond in tailings areas. At some inactive and abandoned historic mine workings where tailings are dispersed into streams, aquatic and plant communities may be impacted for as much as tens of km downstream by acidic conditions and (or) elevated.
Similar to tailing samples of other lead-zinc mine sites, the Klondyke tailings are iron rich and have a low acid-neutralizing-to-acid-generating (AGP) potential ratio (Table 1). As a result, they are acid-generating tailings, which prevents natural revegetation and complicates phytostabilization.
Faro is a town in the central Yukon, Canada, formerly the home of the Faro Mine, the largest open pit lead–zinc mine in the world as well as a significant producer of silver and other natural resource ventures. The mine was built by the Ralph M.
Parsons Construction Company of the USA with General Enterprises Ltd. of Whitehorse being the main subcontractor. For example, the content of SiO 2 in phosphate tailings isin contrast to the in iron ore tailings.
Even if there were all lead-zinc tailings or iron ore tailings, the variation content of SiO 2 is in the lead-zinc tailings or in the iron ore tailings. As a result, if tailings are only classified according to.
Mining Industry Profile: Lead-Zinc The size of tailings impoundments varies among operations. For example, the impoundment at the Magmont facility in Missouri consists of an foot high by 1,foot long compacted earth-filled dam and an acre pond (Schwandt, ).
”Environment Canada reported that the metallic contaminants that had been dumped in the Mt Polley tailings pond included these hazardous metals: Lead, Arsenic, Nickel, Zinc, Cadmium, Vanadium, Antimony, Manganese and Mercury.” “ALL tailings “ponds” are problems.
If they don’t breach and spill massive amounts of toxic sludge into the environment like at Mount Polley, they leach [ ].
Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an gs are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced during mining without being processed.
The extraction of minerals from ore can be done two ways: placer mining, which uses water. Chat is fragments of siliceous rock, limestone, and dolomite waste rejected in the lead-zinc milling operations that accompanied lead-zinc mining in the first half of the 20th century.
Historic lead and zinc mining in the Midwestern United States was centered in two major areas: the tri-state area covering more than 2, square miles (6, km 2) in southwestern Missouri, southeastern Kansas.
The mean concentration of copper, iron, manganese, lead and zinc in the soil was,and mg/kg respectively. This study provided the spatial variation in concentration of heavy metals as a baseline data for impact assessments of the proposed uranium mining and tailings storage activity in.
Summary The mining of metallic ores (e.g. iron, copper, lead, zinc, molybdenum, and tungsten), precious metals such as gold, platinum and silver, and large scale coal mining all produces wastewater (, ). As discussed below, this waste water is usually mine drainage pumped from mining areas, water used and discharged from the processing of the.
Romero FM, Armienta MA, Gonzalez-Hernandez G. Solid-phase control on the mobility of potentially toxic elements in an abandoned lead/zinc mine tailings impoundment, taxco, mexico. Appl. Geochem. ; 22 (1)– Iron tailings ponds are engineered dam and dyke systems used to capture iron tailings.
They are high-risk hazards with high potential energy. If the tailings dam broke, it would pose a serious threat to the surrounding ecological environment, residents’ lives, and property. A government report on the site found that water in the underground mine, even during the period in which there were no mining operations, “exceeds discharge limits for most metal parameters, with exceedances of cadmium, copper, lead, selenium, and zinc.” Water samples from the tailings pond registered three different classes of.
Mine tailings disposal sites from either inactive or abandoned mine sites are prevalent in arid and semiarid regions throughout the world. Major areas include northern Mexico and the Western United States, the Pacific coast of South America (Chile and Peru), southwestern Spain, western India, South Africa, and Australia (Munshower ; Tordoff et al.
Tar Creek Facts: The Tar Creek Superfund Site is part of the Tri-State Mining District, which includes northeastern Oklahoma, southeastern Kansas, and southwestern Missouri, The site originally produced lead and zinc to make bullets during both World Wars.
Mining waste, known locally as “chat”, was left on the surface of the site when mining operations Read more. Environmental impacts of mining can occur at local, regional, and global scales through direct and indirect mining practices.
Impacts can result in erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by the chemicals emitted from mining processes. These processes also have an impact on the atmosphere from the emissions of carbon which have.
An Environment Canada filing from Mount Polley Mine lists all the substances disposed of in the tailings pond – including manganese, cadmium, phosphorous and.
Figure 5. Bingham Canyon Mine tailings pond. EcoFlight. Second, while water supply dams are all of the down-stream-type construction, the construction of tailings dam can be either (1) downstream, (2) centerline, (3) upstream, or (4) a combination of any of the previous methods.
GHD has gained a high level of Australian and global recognition for our safe, cost effective, practical and innovative methods in tailings storage design, management and construction supervision.
From alumina to zinc, our team has a wide range of experience in dealing with both metalliferous and non-metalliferous tailings.Thallium and lead concentrations (mg/kg d.w.) in laid 1-day-old eggs from the BUK and CHE ponds, comparison to Tl and Pb levels in sediments of the BUK pond Adult common toads spend a relatively short time in direct contact with the aquatic environment, and individuals occupy different locations within their terrestrial habitat thus their.In contrast, we have recently shown that an extremely acidic (pH ) Pb-Zn mine tailings site harbored a remarkably simple, archaeon-dominated community, with the vast majority of the detected 16S rRNA sequences phylogenetically affiliated with the iron oxidizer Ferroplasma acidiphilum and tentative groups within the Thermoplasma lineage so.