@article{osti_5586169, title = {The use of atomic absorption spectroscopy to measure arsenic, selenium, molybdenum, and vanadium in water and soil samples from uranium mill tailings sites}, author = {Hollenbach, M H}, abstractNote = {The Technical Measurements Center (TMC) was established to support the environmental measurement needs of the various DOE remedial action programs.
Sep 01, 2011· 10%· Vanadium-beard bone coal is one of important vanadium resources in China. to extract vanadium tailings from Stone coal is prduced after extracted vanadium from stone coal through the roasting, leaching and other processes. About 120-150 tons of tailings will be produced in extracting 1 ton of vanadium pentoxide. A lot of tailings that are willfully piled up have caused …
There is an increasing global demand for tungsten, which is a critical element used in various industries. There are millions of tons of current and legacy mineral processing tungsten tailings worldwide that can potentially contaminate the environment and pose human health risks. These tailings could also become valuable resources if we thoroughly characterize their geochemical composition.
the high vanadium content of these tailings; it is in no way related to tailings produced by the Vanadium Corporation of America (VCA) mill that preceded the Atomic Energy Commission (AEC) mill. Use of the Acid Pile commenced about 1955. This pile received tailings from the acid leach RIP process and a carbonate leach circuit.
Radwany also took samples from the La Sal mine. She plans to use them for leaching tests, then later to examine the residues to see where vanadium is being lost to tailings. Establishing a better idea of where vanadium lies in the tailings could improve its recovery at the mill, Radwany said in her master's project proposal.
Oct 30, 2020· The tailing sample (4 g) was mixed with 100 mL of mineral medium ( Table S1 ) in 120 mL serum bottles. Acetate (6 mM) was provided as the sole electron donor with
The milled vanadium tailing was obtained by dry ball milling of the raw vanadium tailing. Thermal stability of the geopolymer sample was evaluated in terms of the change of compressive strength ...
Vanadium tailing (VT) is the main solid waste produced by the vanadium-extraction industry. Vanadium-bearing car-bonaceous shale is an important vanadium resource in China, and its vanadium grade generally ranges from 0.13% to 1.2% [36–37]. This means that extracting 1 ton of V2O5 from vana-
Figure 3: Sample of rock from stockpile with dark veneer of vanadium bearing descloizite Abenab Tailings The tailings from the Abenab plant included in the Joint Venture Agreement are located in a flat lying area to the northeast of the open pit. A total of 172 auger holes were drilled on …
16. View north of Church Hollow tailings near Georgetown Canyon mine, Bear Lake County, Idaho, sample site WPD2029C. 17. View north of waste rock dumps at the Waterloo mine, Bear Lake County, Idaho, sample sites WPD2030C (dark rock) and WPD2031C (light rock). 18. View southwest of sample site at Hot Springs mine, Bear Lake County, Idaho; showing
The mine tailings have elevated concentrations of vanadium compared to local background soils, and following the failure of the tailings dam in 2014, there was concern about vanadium contamination downstream. Vanadium occurs naturally in four oxidation states (V 2+, V 3+, V 4+, and V 5+). Although vanadium is an essential element for humans and ...
In 1942, a vanadium mill was built on the site of an old lead smelter plant by the United States Vanadium Corporation (USV). In 1943, USV began reprocessing vanadium tailings for the recovery of uranium for sale to the Manhattan Project and operated the mill until 1946 when the mill was shut down.
The invention relates to a method for extracting vanadium from vanadium titano-magnetite. The method comprises the following steps: carrying out crushing, ore grinding and dry weak magnetic separation pretreatment on crude vanadium titano-magnetite to obtain vanadium-iron concentrate and mine tailings; mixing the vanadium-iron concentrate with calcium fluoride and a sulfuric acid solution ...
Sample of geopolymer is acquired from mixture containing vanadium tailings, alkali activators, water and a little sodium aluminate through compression-molding process under 20MPa pressure.
Historical Note The Durango site of the former Vanadium Corporation of America uranium mill was one of twenty-four selected for cleanup in 10 states and various Indian reservations, and was among the first such federal projects completed. UMTRA (Uranium Mill Tailings Remedial Action) cleanup costs exceeded $500 million. Congress passed PL95-604, the Uranium Mill Tailings Radiation Control Act ...
3 Tailings Sample Material 3 ... tailings from the Barrambie Vanadium Project, Sandstone, WA would have a low probability of generating leachant liquors that would transport toxic heavy metals into the ground water systems in the tailings disposal area. Discussions with the EPA focused on the need to …
Monticello Mill Tailings Site & Monticello Mill Vicinity Properties . The city of Monticello is located at the base of the Abajo mountains in the Manti-La Sal National forest. The United States government operated a uranium and vanadium processing mill, adjacently located to the town of Monticello, Utah, during World War II and the Cold War era.
A total of 86 soil samples, 86 corn kernel samples, 50 tailings samples, and 33 ore rock samples were collected in reclaimed land and surrounding areas of typical vanadium-titanium magnetite tailings located in the Chengde Central Region and analyzed for 14 elements (P, Fe, Cu, Ni, Cd, Cr, Pb, Zn, Hg, Ti, Mn, and Mo) and speciation of heavy metals.
tailings disposal is a significant part of the overall mining and milling operation at most hardrock mining projects. There are several methods used for tailings disposal. These include disposal of dry or thickened tailings in impoundments or free-standing piles, backfilling underground mine …
3.0 SAMPLE PREPARATION AND ANALYSIS ... vanadium solvent extraction process is described in more detail because it is the stage ... called tailings, which consist of a variety of other minerals that were present in the ore. The pregnant solution is pumped to the pre-leach tanks and subsequently to the uranium recovery
Traditional tailings storage dams/ ponds continue to fail on a relatively regular basis. To eliminate the risk of tailings dam failures from and to minimize the footprint in our environment, there is a clear trend for dry stacking to backfill the mining sites instead of paste …
Feb 01, 2015· Abstract A new approach to concentrate V-containing spinel phase from vanadium slag by super gravity was investigated. The samples obtained by the gravity coefficient G ≥ 1050, time t ≥ 30 min and temperature T ≥ 1523 K appear significant layers and V-containing spinel phase presents gradient size distribution in the sample along the super gravity. The mechanism of moving speed of V ...
Jan 01, 2013· The milled vanadium tailing was obtained by dry ball milling of the raw vanadium tailing. Thermal stability of the geopolymer sample was evaluated in terms of the change of compressive strength and microstructure after heat treatment. Results showed that dry ball milling can effectively enhance the reactivity of the vanadium tailing.
Keywords: vanadium extraction tailings, hollow spheres of Fe 2 O 3, methyl orange removal, synthesis. 1. INTRODUCTION Waste water, which has a high concentration of harmful substances, can seriously threaten the environment and the health of the human population. Methyl orange (MO) is a typical pollutant in dye wastewater; the
Due to the low grade of V2O5 in stone coal, the existing vanadium extraction technologies face challenges in terms of large handling capacity, high acid consumption and production cost. The pre-concentration of vanadium from stone coal before the extraction process is an effective method to reduce cost. In this study, detailed mineral characterization of stone coal was investigated.
May 05, 2019· The spent vanadium contained tailing sample was obtained from an industry of steal-making in Panzihua, China and crushed to a particle size smaller than 75 μm. The sulfuric acid of analytical reagent grade was kindly provided by Sinopharm Chemical Reagent Co., Ltd and dissolved in water to the required concentrations.
tailings (> 1000 ppm), followed by Neodymium and Lanthanum. Zirconium is the most prevalent trace metal found in this tailings sample (> 1000 ppm), followed closely by Vanadium. Mercury, Lead, and Arsenic are also confirmed to be present in tailings but their exact concentrations are yet to be determined. The next step in this research would be ...
Aug 01, 2017· The raw tailings (or activated tailings) were mixed with MK in a 1:1 ratio, and Na 2 SiO 3 solution was used as the activator. The micromorphology of the geopolymer samples was observed with a JSM-5610LV scanning electron microscope (Japan). 3. Results and discussion3.1. Effect of mechanical activation on the vanadium tailings
Manganese and vanadium uptake by Cynodon Dactylon grass species: A case study in New Union gold mine tailings, Limpopo, South Africa N. Makuya 2, J.R. Gumbo 1, C. Muzerengi 2, F.A. Dacosta 2 1 Department of Hydrology & Water Resources, [email protected]; [email protected] 2
In 1942, a vanadium mill was built on the site of an old lead smelter plant by the United States Vanadium Corporation (USV). In 1943, USV began reprocessing vanadium tailings for the recovery of uranium for sale to the Manhattan Project and operated the mill until 1946 when the mill was shut down.
Vanadium-rich mine tailings at Berg Aukas, site with a world-known vanadium mineralization in northeastern Namibia, were investigated using a combination of solid phase and mineralogical analyses, leaching tests and speciation modeling. Principal
7, 77 IF 7 FE 71B1I7 7 ?F 7B PERE l):tI! 898~ PLEASE DO NOT REMOVE FROM LIBRARY Bureau of Mines Report of Investigations/1985 Hot Acid Leaching of Vanadium From Western Phosphate Beneficiation Tailings By D. G. Collins, J. H. Russell, and A. R. Rule UNITED STATES DEPARTMENT OF THE INTERIOR ilGY~i o~.~~ MINES 75TH A ~
Microbial Community Responses to Vanadium Distributions in Mining Geological Environments and Bioremediation Assessment Baogang Zhang1, Song Wang1, Muhe Diao2, Jie Fu3, Miaomiao Xie4, Jiaxin Shi1, Ziqi Liu1, Yufeng Jiang1, Xuelong Cao1, and Alistair G. L. Borthwick5 1School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental