Professional mine crushing machinery manufacturer

  • Release of radionuclides from waste rock and tailings at a

    mining and milling were carried out between 1958 and 1961, and the mine site was reha-bilitated in the early 1990s. The aim of this study was to examine the potential for further mobilization of radionuclides after remediation. There are two primary sources of contami nation at the site, the waste-rock pile and the tailings.

  • An Assessment of Radiological Hazards from Gold Mine

    Jan 18, 2016· An Assessment of Radiological Hazards from Gold Mine Tailings in the Province of Gauteng in South Africa the results also show enhanced levels of 232 Th in the gold mine tailings compared to the control area. Mine tailings three had the highest average activity concentration compared to the other tailings mainly because, in other tailings

  • Cited by: 11
  • Tailings and Their Component Radionuclides From the

    Component Radionuclides From the Biosphere­ Some Earth Science Perspectives By Edward Landa ABSTRACT U rani urn mining and milling is an expanding activ·ity in the Western United States. Although the milling process yields a uranium concentrate, the large volume of tailings remaining centains about 85 percent of the

  • Cited by: 17
  • Responsible management of tailings dams and mine waste

    The safe and responsible long term management of mine waste is one of the areas in the South African mining industry that Endress+Hauser plays a role in by providing the instrumentation necessary to monitor this waste. Tailings, the refuse from ore processing, are generally disposed of in tailing or containment dams.

  • MEASUREMENT OF RADIONUCLIDES IN PROCESSED MINE

    MEASUREMENT OF RADIONUCLIDES IN PROCESSED MINE TAILINGS IN JOS, PLATEAU STATE W.E. Mangset and A. T. Sheyin Department of Physics, University of Jos Nigeria [email protected] ABSTRACT The Jos Plateau is situated in the central part of Northern Nigeria, on a rugged terrain of low lands at the edge of the Plateau surface (Hyde, 1986).

  • GUIDELINE Tailings Impoundment for Uranium Mines

    "the slimes" can lead to tailings which take a long time to dewater and consolidate and therefore to stabilise. 7 During the extraction process 90% to 97% of the uranium is removed leaving essentially all the other radionuclides of the uranium decay chain in the tailings slurry.

  • Modelling of Radiological Health Risks from Gold Mine

    Jun 07, 2016· Modelling of Radiological Health Risks from Gold Mine Tailings in Wonderfonteinspruit Catchment Area, South Africa. radionuclides, mine tailings, radiation dose, cancer The results of the radiation doses for the gold mine tailings and control area presented in Table 3 and Table 4 were used by RESRAD-OFFSITE computer code to calculate

  • Cited by: 4
  • Status of naturally occurring radionuclides in copper mine

    assess the level of naturally occurring radionuclides in mine wastewater and tailings sludge discharged to the environment from a copper mine where by-product uranium was mined and processed between 1957 and 1960. The results of this ongoing survey indicate that the radioactivity content of mine

  • [ASSESSMENT OF HUMAN EXPOSURE TO RADIONUCLIDES

    public radiation exposure after a dam break at a uranium mill tailings pond*. Investigations of accidents su>:h as this also provide insight into the effects of chronic exposure to industry-related releases of radionuclides-Early on the morning of July 16, 1979, a breach occurred in the earthen retainii^g dam of a tailings pond of the United

  • Process Dynamics: automating the processing of tailings

    A large mining operation in Mpumalanga realised that in order to maximise the benefits from reworking its tailings in a brand new processing plant, it would need to implement a high-tech control system to automate the sophisticated technology used to process the tailings.

  • Radioactivity and Water Quality in Areas of Old Uranium

    Radionuclides were determined in streams and rivers receiving mine drainage from old uranium mines at the center of Portugal. Results showed enhanced radioactivity levels in some areas impacted by

  • Mine Tailings an overview ScienceDirect Topics

    The microbially mediated oxidation of sulfide minerals within mine-tailings impoundments generates acidic conditions and releases high concentrations of dissolved metals. Mill tailings at the Heath Steele mine in New Brunswick contain up to 85 wt.% sulfide minerals (Blowes et

  • Determination of Natural Radioactivity Levels due to Mine

    The aim of this study was to determine the natural radioactivity levels of primordial radionuclides in soil mine tailings from selected mines in Southwestern Uganda. This was achieved by analyzing thirty six samples of soil mine tailings from three mining sites using NaI(Tl) gamma ray spectrometer. The specific activity concentrations

  • Mine Tailings Disposal Methods

    The methods commonly employed for disposal of these wastes in each of the industry segments (that is, coal mining and metal-ore and non-metal mineral mining) are described below. Mining Coal Tailings Disposal As has been pointed out earlier in this section, immense quantities of wastes are produced by coal mining activities.

  • Assessment of Radiological Hazards from Gold Mine Tailings

    In this study, gamma spectroscopy was used to measure the activity concentrations of these radionuclides in 56 soil samples from the mine tailings and 10 soil samples from the control area.

  • Exposures from mining and mine tailings ScienceDirect

    Vegetation, however, may not be applicable in arid areas or regions of high population density where radon control may be a potential concern since vegetative cover alone does not reduce radon emissions. Some form of institutional land-use control may be required to prohibit either removal of tailings Exposures from mining and mine tailings

  • Seepage Control for Tailings Dams

    Seepage Control for Tailings Dams by Earle J. Klohn, President, Klohn Leonoff Consultants Ltd., of the free water surface within the tailings pond varies from one mining operation to another. At one extreme, some instrumentation

  • An Assessment of Radiological Hazards from Gold Mine

    The AEDE values for the mine tailings and the control area were also calculated as shown in Table 3. They were found to be in the range 0.1 to 1.6 mSv y −1 with an average of 0.5 mSv y −1 and from 0 to 0.1 mSv y −1 with an average of 0.1 mSv y −1 for the mine tailings and the control area

  • Uranium tailings Wikipedia

    Uranium tailings are a waste byproduct of uranium mining. In mining, raw uranium ore is brought to the surface and crushed into a fine sand. The valuable uranium-bearing minerals are then removed via heap leaching with the use of acids or bases, and the remaining radioactive sludge, called "uranium tailings", is stored in huge impoundments.

  • Bioavailabilities of radionuclides and non-radiological

    Bioavailabilities of radionuclides and non-radiological contaminants in sediment containing uranium mill tailings David A Klessa Office of the Supervising Scientist, Environment Australia, PO Box 461, Darwin, Northern Territory 0801, Australia Abstract: A study was undertaken to investigate contaminant bioavailability in sediment following

  • The long term stabilization of uranium mill tailings

    THE LONG TERM STABILIZATION OF URANIUM MILL TAILINGS IAEA, VIENNA, 2004 IAEA-TECDOC-1403. ISBN 92–0–108904–X The aim of the CRP on the long term stabilization of uranium mill tailings was to contribute to the Relationship of tailings piles to mine and mill facilities.. 11 2.4. Historical approaches to tailings placements

  • Uranium Mining: The Facts on a nuclearsafety.gc.ca

    engineering designs and control processes are required to remove radon, which develops from the natural decay of radionuclides and heavy metals on the local environment. Results waste rock and uranium mill tailings are typically stored on the mining or milling sites themselves.

  • Regulation of environmental and health impacts in the rare

    Regulation of environmental and health impacts in the rare earth element industry. Rare Earth Element (REE) mining, processing and exploitation are large scale industries that use a wide range of chemical substances and generate significant quantities of waste.

  • SAFETY AND SECURITY OF OUR TAILINGS STORAGE FACILITIES

    engineering properties of the tailings. Generally, tailings from hard rock mines (e.g. copper) behave differently to tailings from other types of mining. Copper tailings typically settle, drain, consolidate and gain strength. In comparison, iron ore tailings are generally weaker, exhibiting high plasticity, high liquidity and high moisture

  • SAFETY AND SECURITY OF OUR TAILINGS STORAGE FACILITIES

    engineering properties of the tailings. Generally, tailings from hard rock mines (e.g. copper) behave differently to tailings from other types of mining. Copper tailings typically settle, drain, consolidate and gain strength. In comparison, iron ore tailings are generally weaker, exhibiting high plasticity, high liquidity and high moisture

  • NUREG/CR-2856, 'A Review of Fugitive Dust Control for

    Much research has been done by mining companies, the U.S. Bureau of Mines (BM) and for the Environmental Protection Agency (EPA) on stabilization of waste tailings for the prevention of fugitive dusting. Chemical, physical, and vegetative methods of dust control have been used or tested on inactive

  • Outotec offers three new International Mining

    Outotec offers three new technologies for sustainable tailings and water management Posted by Paul Moore on 28th December 2017 As ore compositions at mines around the world become more complex and the grades of available resources continue to decline, the amount of tailings per tonne of metal produced is rising.

  • An Assessment of Radiological Hazards from Gold Mine

    Radiological hazards associated with exposure to Naturally Occurring Radionuclides Materials from gold mine tailings in the province of Gauteng in South Africa were evaluated. A comparison was made with soil samples from a control area. In this study, gamma spectroscopy was used to measure the activity concentrations of these radionuclides in 56 soil samples from the mine tailings

  • REGULATORY GUIDE INTERIM GUIDANCE ON THE

    REGULATORY GUIDE INTERIM GUIDANCE ON THE MANAGEMENT OF NORM TAILINGS AND WASTE ROCK RG-0018 Rev 0 INTERIM GUIDANCE ON THE MANAGEMENT OF NORM TAILINGS AND WASTE ROCK of Tailings and Waste Rock in Mining Activities, Seville, Spain (2009) [7];

  • Outotec Thickened tailings and Paste Solutions

    Outotec® Thickened tailings and Paste Solutions Sustainability through better tailings management Reclaim water and store your tailings in a safe modern way. Outotec has the ultimate environmentally sound total solution. Paste technology is a modern way to environmentally friendly handle and store tailings from various processes like mine

  • Process intrumentation for the Australian lead industry

    Nov 07, 2019· Modernisation and technological developments are becoming the focus of improved process instrumentation for the Australian lead mining industry. The lead is separated from tailings and minerals using a flotation process. Lead sulphate concentrate rises to the top and is skimmed and dried.

  • Management of Tailings and Waste-Rock in Mining

    The management of tailings and waste-rock The management of the residues generated at mining operations, and, of special concern in this document, the tailings and waste-rock, typically presents an undesired financial burden on operators. Typically the mine and the mineral processing plant are designed to extract as much

  • Technologies for the treatment of effluents from uranium

    rehabilitation. Tailings and mine waste dumps produced during mining and milling are the main source of effluents from a uranium operation, and they continue to be a concern even after a mine is closed. Both tailings and waste rock and low-grade ore dumps represent

  • Ecological distribution and bioavailability of uranium

    Ecological distribution and bioavailability of uranium series radionuclides in terrestrial food chains: Key Lake uranium operations, northern Saskatchewan

  • BIOLOGICAL ASSESSMENT AFTER URANIUM MILL TAILINGS

    Radionuclides are also released into the river system through the dewatering of the KerJ-McGee uranium mine located 1 mile north o£ the UNC mill (Figure 1), During usual mining operations^ approximately 3^600 gallons per minuee are released info Ehe pipeline arroyo and subsequently to the Rio' Puerco, The con- •

  • Mailuu-Suu Tailings Problems and Options for Remediation

    The area of the town of Mailuu Suu, Kyrgyzstan, is polluted by radionuclides and heavy metals in tailing dumps and heaps resulting from the historic exploitation of U-mines in the Mailuu Suu area in Kyrgyzstan. Radioactive substances are stored in 23 tailings and 13 mining debris heaps situated along the Mailuu Suu River.

  • Uranium Mill Tailings Remediation in the United States

    Nov 19, 2015· Karp K, Metzler D, 2005, Moab, Utah, UMTRA Site: The last large uranium mill tailings pile to be cleaned up in the United States, US Department of Energy Office of Environmental Management; Landa E, 1978, Isolation of Uranium Mill Tailings and their Component Radionuclides from the Biosphere-some Earth Science Perspectives, Geological

  • Managing naturally occuring radioactive material (NORM) in

    2 Managing naturally occurring radioactive material (NORM) in mining and mineral processing. the tailings from the mining and initial separation phase of the operation are of no radiolo- (NORM) in mining and mineral processing. Guideline NORM 4.2 Controlling NORM management of radioactive waste.

  • Top