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KEYWORDS: tailing sands, high pressure, deformation modulus, copper tailing, triaxial, shear resistance. 1 INTRODUCTION. Currently, both the important increase of production in the copper mining industry and the decrease of available space for the construction of tailing deposits have led to the design of
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However, the tailing slurry containing roughly 40–60% solids is discharged as a result of the process (Bleiwas, 2012). The primary environmental issues with copper mines are the disposal and dewatering of these tailings. Impurities such as heavy metals, chemical reagents, and fine particles are present in flotation slurries.
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Mining is essential for societal development as it supplies essential raw materials for various industries. However, it can occasionally negatively impact ecosystems and populations [1,2,3,4,5,6].One of the main concerns associated with mining activities is the potential release of high-toxicity pollutants into the environment [7,8,9].Some …
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Mining is an important industry that provides products and services through infrastructure systems worldwide. However, the global development promotes the steady growth and accelerated demand for ...
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Concrete materials are widely used in engineering projects, with fine aggregates (sand) being a key component currently in short supply. Copper tailings sand, a waste by-product of copper mining, accumulates in large quantities in tailings dams. Recycling and reusing this waste sand is crucial for environmental sustainability. This …
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The practice of dewatering tailings, however, is still limited to few areas globally. According to 's analysis, only ~5% of tailings generated in 2018 were dewatered into thickened, paste ...
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The effect of copper ore tailing and iron ore tailing for the partial replacement of cement and sand on strength and durability characteristics were analyzed and compared with normal concrete. The test results shows that 15% copper ore tailing and 30% iron ore tailing shows the good and optimized results.
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The two prominent methods for mine wastes management or storage are dams and dumps, according to Blight [].Mine tailing impoundments and dam failures are very common, and many literatures have reported this [13, 14] as a cause due to the geotechnical behaviour of tailings.The Fundao dam failure in 2015 [], Brumadinho dam disaster at Corrego do …
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A greenhouse experiment was conducted to study copper bioavailability and bioaccumulation in agricultural soils spiked with different types of copper-rich mine solid wastes (copper ore, tailing sand, smelter dust, and smelter slag) and copper concentrate.
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The effect of copper ore tailing and iron ore tailing for the partial replacement of cement and sand on strength and durability characteristics were analyzed and compared with normal concrete. The test results shows that 15% copper ore tailing and 30% iron ore tailing shows the good and optimized results.
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higher than NS (natural sand) and it leads to increased water absorption of IOT, which ranges from 0.8% to 9%. Moreover, IOT has a higher bulk density than NS due to ... Copper ore tailing's physical and chemical properties Copper ore tailings are black and glassy in appearance and have a relative density of 2.99, and 0.4% of water absorp- ...
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Fundamental to this success is a solid understanding of the engineering properties of cycloned sand, such as relative density, void ratio, strength, and permeability. The two main cycloned sand material parameters typically used in design analyses are strength, often represented by a friction angle and unit weight, and hydraulic conductivity.
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This paper characterized the behavior of a tailings material from a copper tailings storage facility in Canada using the critical state soil mechanics framework …
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The Keweenaw Peninsula of Michigan has been nationally famous for over 100 years for its history of highly productive copper mining. The local basalt is criss-crossed with many thick veins of native …
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Characterization of materials by partially replacing cement by copper ore tailing and sand by iron ore tailing - Download as a PDF or view online for free
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This paper characterized the behavior of a tailings material from a copper tailings storage facility in Canada using the critical state soil mechanics framework using constant volume (undrained), drained, and constant shear drained shearing tests in direct simple shear space. ... M. A. L., M. M. Rahman, and S. R. Lo. 2014. "Predicting onset ...
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DOI: 10.1016/j.apsoil.2022.104453 Corpus ID: 247249400; Synergistic remediation of copper mine tailing sand by microalgae and fungi @article{Wu2022SynergisticRO, title={Synergistic remediation of copper mine tailing sand by microalgae and fungi}, author={Wanyin Wu and Tan Ke and Xiangjun Zhou and Qingqin Li and Yue-zan Tao …
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Therefore, the gradation of manufactured sand could be optimized when replaced with 20% copper tailing. The sand and silt particle in copper tailing modified the gradation of MS, and the powder finer than 0.075 mm fills in the gap between the fine aggregate and cementitious materials in concrete and serves as micronized sand. 3.2.
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Copper tailings are produced from different mines, and thus it is important to fully characterize the quality and quantity of copper tailings at each site. ... Ore-sand: A …
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The copper tailing sand is from Daye tailing pond in Hubei Province, and the selected tailings are surface tailings. The fineness modulus is 1.2, which is ultra-fine sand, and the mud content in tailings is high. See Table 2 for its physical properties. The particles of copper tailings are mainly concentrated below 0.15 mm (see Table 3 and …
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Utilization of copper tailing for autoclaved sand–lime brick. Constr. Build. Mater. (2011) ... The effects of carbon fiber (CF) and iron ore tailing (IOT) on the sulfate F-T resistance, piezoresistivity, and pore distribution were tested. The results revealed that CF (0.6 vol%) and IOT (30%) significantly improved the compressive strength (51 ...
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Due to rapid growth of construction activity concreting materials became scarcity such as sand and cement, so alternative material such as iron ore tailing and copper ore tailing which is a waste produced in production of steel and copper is used as partial replacement as cement and sand respectively, and hence to avoid the environmental pollution.
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The company's Riotinto Mine [formerly associated with Rio Tinto mining company but not now] is an opencast copper mine in the province of Huelva, Andalusia, southern Spain. The mine currently processes 9.5 million metric tons of copper ore per year with plans to expand to 15 million metric tons per year.
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1 Introduction. Mineral resources provide an important material foundation for society development and national security (Wu et al., 2021).However, the mining processes generate a large amount of tailings, which is about 2–12 times of the metal extracted from the ore (Jiang et al., 2021).At present, over 10 billion tons of mine tailings …
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25% and sand by iron ore tailing of 10%, 20%, 30%, 40%, 50%. The effect of copper ore tailing and iron ore tailing for the partial replacement of cement and sand on strength and durability characteristics were analyzed and compared with normal concrete. The test results shows that 15% copper ore tailing and 30% iron ore tailing shows the good ...
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The effect of copper ore tailing and iron ore tailing for the partial replacement of cement and sand on strength and durability characteristics were analyzed and compared with normal concrete. The test results shows that 15% copper ore tailing and 30% iron ore tailing shows the good and optimized results.
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The Sungun mine is the largest open-cast copper mine comprising more than 388 million tons of copper ore with an average copper content of 0.63% in Iran. ...
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Synergistic remediation of copper mine tailing sand by microalgae and fungi. Author links open overlay panel Wanyin Wu a, Tan Ke a, Xiangjun Zhou a, Qingqin Li a, ... A metal mine tailing dam is a place where the wastes produced in the process of mining are stacked (Zhang et al., 2021). An estimated 5–7 billion tons of mine tailing is ...
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1.1. What Are Mine Tailings? An Initial Scope in an Uncertainty and Complex World. The initial step in mineral processing involves crushing and grinding ore to produce a suitable particle size for further metallurgical processing using physical and chemical separation methods [].Physical separation processes take advantage of the …
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Tailings are typically stored in a tailings dam, with around 3,400 active tailing storage facilities in the world and the total number of active, inactive and closed facilities estimated at more than eight thousand.² ... Newcrest Mining Limited is evaluating the potential for coproducing ore-sand at their Cadia East copper-gold ore operation ...
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