Accumulation of Pb, Cu, and Zn in native plants growing on contaminated sites and their potential accumulation capacity in Heqing, Yunnan ... area. Plants and associated soil samples were collected and analyzed for total metal concentrations. While total soil Pb, Cu and Zn concentrations varied from 1,239 to 4,311, 36 to 1,020 and 240 …
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The Pb isotopic composition of the sulfides from the Qiandongshan–Dongtangzi Pb-Zn deposit (with 206 Pb/ 204 Pb ratios of 18.06 to 18.14, the 207 Pb/ 204 Pb ratios of 15.61 to 15.71, and 208 …
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Editors and Affiliations. Department Materials Engineering of KU Leuven, Belgium. Bart Blanpain (full professor, co-director for the I/UCRC 'Center for Resource Recovery and Recycling', co-editor-in-chief for the Journal of Sustainable Metallurgy) (full professor, co-director for the I/UCRC 'Center for Resource Recovery and Recycling', co-editor-in-chief …
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The present study aimed at evaluating the effects of organic amendments and the growth of pioneer plant species on aggregation of Cu/Pb-Zn tailings under …
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Free gold and gold wrapped in sulfides are considered as the object of gold floatation. However, floatation of free gold exhibits more variables in practice. In this study, improving gold recovery of a Pb–Zn sulfide ore from Yunnan Province, China, was investigated. The results show that free gold and auriferous sulfides account for 94.99 …
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The imbalance between raw materials of high economic importance and their supply has increased the search for new approaches to obtain valuable elements from mining tailings. In this study, the extraction of copper, zinc, and lead from sulfidic tailing in sulfate–chloride media was investigated. A 33 Box–Behnken design was applied to …
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(a) Overview of the Qixiashan deposit. (b) Geological map and (c) cross-section of the Huzhaoshan ore section (modified from Zhang et al., 2017). 1: Quaternary, 2 ...
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The Tongshanling ore field is one of the most representative W–Sn–Cu–Pb–Zn polymetallic deposits in the central-western Nanling Ore Belt, which developed multiple mineralization types ...
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Elements specific to gold ore processes, such as dry grinding for roasting operations, security considerations for gold milling, reagent additions, and integration of …
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Ore reserves are around 0.5 Mt and grades are 3.21% Zn, 0.58% Pb, 0.86% Cu with 83.31 ppm Ag and 0.41 ppm Au. Sulphide mineralizations occur as a local replacement of carbonate bars rocks.
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Various industrial activities contribute heavy metals to the soil environment directly or indirectly through the release of solid wastes, waste gases, and wastewater. Phytoremediation can be potentially used to remedy metal-contaminated sites. A major step towards the development of phytoremediation of heavy metal-impacted soils is the …
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As a result, both OMs containing functional groups and pioneer plant culture were found to stimulate aggregation and the development of technosols in Cu/Pb-Zn tailings. X-ray diffraction spectra ...
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Abstract: Western Tianshan Mountains extend from Uzbekistan through Tajikistan, Kyrgyzstan, southern Kazakhstan to Xinjiang Western Tianshan, with a length of 2500 km from west to east. This belt is the core zone of the "Asian Gold Belt" and shows evident potential of Au-Cu-Zn-Pb mineral resources. Large Au-Cu-Zn-Pb ore deposits …
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jesc.ac 1470 LIU Xiaohai et al. Vol. 20 Cu, and Zn hyperaccumulators have been found recently in temperate as well as in tropic regions throughout the plant kingdom, but it is generally restricted to endemic species growing on mineralized soils and related rock types (Baker and Brooks, 1989). There are abundant metal resources in Yunnan Province, …
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The genesis of the Mount Isa Cu-Pb-Zn system, northern Australia, is highly debated. Three metallogenic models have previously been proposed to explain the close spatial relationship between a world-class Cu and Pb-Zn deposit: (1) ca. 1650 Ma syngenetic Pb-Zn mineralisation that has been re-mobilised and overprinted by ca. 1520 …
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Sulfur and chlorine are the two most important ligands accounting for metal transport in the upper crust. In this study, four metal- and sulfur-saturated model fluids with varying salinities and redox states were simulated in the Fe-Cu-Pb-Zn-Au-S-C-H-O system, over a wide pressure-temperature (P-T) range (50–650 °C, 0.8–5.0 kbar), in order to …
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Gold mineralization is hosted in a variety of geological settings, from oceanic arcs to orogenic belts including their forelands and back-arc basins, as well as in alluvial …
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1.. IntroductionThe accumulation of heavy metals in agricultural soils is of increasing concern because of food safety issues, potential health risks, and its detrimental effects on soil ecosystems (McLaughlin et al., 1999, Cui et al., 2004).Hg, Pb and Cd are of great concern because of their toxicity to human health and other organisms, whereas …
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This indicates that the ore-forming metals (esp. Cu, Pb and Zn) ... Gold, Ag, and Zn contents increase vertically from the stringer to the bedded ore facies; Cu and Co increase in the massive ore facies, and Pb is highest in the stringer zone. Ore mineralization in the Northern Chah-Farsakh deposit has emplaced in two stages.
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Trommel screens for gold screening from Multotec are hard-wearing, high-impact and abrasion-resistant mechanical screening solutions. Installed at the end of grinding mills …
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Froth flotation is practically the most effective method in their beneficiation when optimum flotation conditions are attained. The aim of the current study is to use …
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A new approach based on the use of inductively coupled plasma optical emission spectrometry (ICP-OES) is presented for the quantitative determination of Fe, Co, Mn, Cu, Pb, and Zn in ore samples ...
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The formation of Pb-Zn-Ag (Au-Cu) deposits in the study area and elsewhere in the Serbomacedonian-Rhodope district is genetically related to Tertiary magmatic activity (e.g. Heinrich and Neu ...
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The concentration and speciation of Cu, Pb and Zn in soil samples collected around the lead–zinc smelting plant of Baoji, NW China, were determined using X-ray fluorescence spectrometry and the modified European Community Bureau of Reference sequential extraction procedure. The single pollution index (PI) and the integrated …
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Using a global database of 664 hyperaccumulating plants, we constructed a phylogeny of hyperaccumulating plants of As, Cd, Cu, Cr, Mn, Ni, Pb, and Zn. We evaluated the phylogenetic randomness of plants hyperaccumulating different metals by comparing the minimum number of trait-state changes across the phylogenetic tree to a …
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The Ab-Bid deposit, located in the Tabas-Posht e Badam metallogenic belt (TPMB) in Central Iran, is the largest Pb-Zn (±Cu) deposit in the Behadad-Kuhbanan mining district. Sulfide mineralization in the …
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Iron oxide copper gold ore refers to the symbiosis of copper ore and gold ore in gold ore in some form. Its amount is about 10 million to 4 billion tons. IOCG ore contains copper with a grade of 0.2% to 5% …
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According to the process mineralogy characteristics of the ore, Cu-Pb-Zn bulk flotation, partial Cu-Pb bulk flotation, and preferential flotation tests were conducted.
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The Yinshan Cu–Au–Pb–Zn–Ag deposit is located in the famous Dexing copper–gold polymetallic district in South China (Fig. 1).This polymetallic district consists of the Middle Jurassic (ca. 170 Ma) Yinshan Cu–Au–Pb–Zn–Ag deposit (950,000 tons of Cu and 107 tons of Au) (JGEB, 1996, Yinshan Lead-Zinc Mine, 1993, Wang et al., 2011b), …
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Inspection of rocks, oil, sediments and ore. Drawing of atlas for mineral resources. Analysis of crude ore, ore concentrates and tails in washing process. On-site analysis in hydrologic survey and archeology. Determination of grade of ore during the purchase of crude ore and ore concentrates.
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