copper tailings iron content
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copper tailings iron content

Recovery of iron from copper tailings via low

2017-9-4  R.M. Jiao et al., Recovery of iron from copper tailings via low-temperature direct reduction and 975 the industrial scale requires further examination. Numer-ous laboratory-scale studies have focused on the reduction and magnetic separation of copper slags [22–24].

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Leaching of iron from copper tailings by sulfuric acid ...

In this study, the kinetics and mechanism of the leaching of iron from copper tailings using sulfuric acid were studied. Under optimal conditions (40 °C, sulfuric acid concentration of 0.53 mol L −1 , stirring speed of 400 rpm, solid/liquid ratio of 1 : 10 and leaching time of 120 min), 66.45% of Fe, along with 65.32% of Zn and 59.95% of Cu ...

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Leaching of iron from copper tailings by sulfuric acid ...

tion possibility of copper tailings. Rogowski et al.21 used various acids for the dissolution of metals from copper ota-tion tailings. However, to the best of our knowledge, the acid leaching behavior with respect to iron has rarely been reported. Herein, a theoretical analysis of the leaching of iron from copper tailings was performed.

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Recovery of iron and copper from copper tailings by coal ...

Under these conditions, copper-bearing iron powders (CIP) with an iron content of 90.11% and copper content of 0.86%, indicating iron and copper recoveries of 87.25% and 83.44% respectively, were ...

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Distribution of Zinc, Copper, and Iron in the Tailings Dam ...

2018-11-17  This paper addresses the mechanism of acid mine drainage generation in tailings from an abandoned mine site and predicts the evolution of zinc (Zn), copper (Cu), and iron (Fe) concentrations. Batch leaching experiments and sequential extractions were conducted to investigate the leaching behavior of these contaminants from the tailings and to understand

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Copper Tailing - an overview ScienceDirect Topics

The copper tailings were used at 20% content as a fine granite replacement for fraction size smaller than 1.18 mm. The aggregate grading of the copper tailings mix was kept similar to the reference mix, thus the difference in aggregate packing between the two mixes was kept to a minimum. In the same study, the effects of bitumen characteristics ...

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Economic Potential for reprocessing Copper Mine

2016-7-31  A total of 81 tailings samples were analyzed using XRF, during the survey sampling. The copper grade of the tailings varied between 0.1 % and 1.7 %. Further elements of interest were iron, gold, molybdenum and zinc. This data and the tonnage of the tailings ponds was the basis to select four sites for a more detailed

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(PDF) Potentials of steel slag and copper mine tailings as ...

The effect of temperature, duration of sulphatizing roasting, as well as the amount of iron sulfates on the conversion of zinc, copper, iron and other components in the tailings

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Common Copper Tailings Reprocessing Methods - Xinhai

2020-11-16  01 1.Copper tailings physical and chemical properties. The physical form of copper tailings is similar to sand. However, it has more complex mineral composition than sand. There are a large number of valuable elements such as silicium, calcium, aluminum, iron.

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Mine Tailings - an overview ScienceDirect Topics

The residual moisture content of thickened tailings is greater than that observed for conventional tailings (Robinsky et al., 1991; Al and Blowes, 1996). The high residual moisture content of mine tailings results in a low gas-filled porosity, and in rapid changes in hydraulic gradient in response to precipitation ( Blowes and Gillham, 1988 ...

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Report of Investigation 17 - Michigan

2016-2-26  and 5-61 ppm magnesium. Traces of copper ranged from 4 ppm in iron tailings to 570 ppm in copper tailings. Iron content varied from 137 ppm in copper tailings to 1,248 ppm in iron tailings. Particle size separates ranged from fine sand to clay. The tailings are structureless with no consistency, and are easily eroded by wind and water.

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Leaching copper tailings

2020-10-28  lic content could be turned into valuable ores. This ... the solution on scrap iron, the method that is at ... case for testing the possibility of leaching the copper tailings. The ore used,was a low grade copper tailing. The are is highly si1icous, which fact is favorable to

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Recovery of iron from copper tailings via low-temperature ...

2017-4-6  Currently, the majority of copper tailings are not effectively developed. Worldwide, large amounts of copper tailings generated from copper production are continuously dumped, posing a potential environmental threat. Herein, the recovery of iron from copper tailings via low-temperature direct reduction and magnetic separation was conducted; process optimization

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Geotechnical Properties of Mine Tailings

2017-1-13  which are smaller than those of the iron tailings but slightly larger than those of natural soils. Fig. 1 indicates that the mass percentage of grain size less than 0.075 mm is 14.9% for the coarse iron Table 1. Geotechnical Properties of Coarse and Fine Tailings Properties Yuhezhai iron tailings Bahuerachi copper tailings Coarse tailings Fine ...

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Economic Potential for reprocessing Copper Mine

2016-7-31  A total of 81 tailings samples were analyzed using XRF, during the survey sampling. The copper grade of the tailings varied between 0.1 % and 1.7 %. Further elements of interest were iron, gold, molybdenum and zinc. This data and the tonnage of the tailings ponds was the basis to select four sites for a more detailed

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Geotechnical Properties of Mine Tailings Journal of ...

The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, laboratory experiments were performed to investigate the geotechnical properties of four different tailings, including two iron tailings (coarse and fine) and two copper tailings

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Common Copper Tailings Reprocessing Methods - Xinhai

2020-11-16  01 1.Copper tailings physical and chemical properties. The physical form of copper tailings is similar to sand. However, it has more complex mineral composition than sand. There are a large number of valuable elements such as silicium, calcium, aluminum, iron.

More

(PDF) Potentials of steel slag and copper mine tailings as ...

The effect of temperature, duration of sulphatizing roasting, as well as the amount of iron sulfates on the conversion of zinc, copper, iron and other components in the tailings into water-soluble ...

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Recovery of γ-Fe2O3 from copper ore tailings by ...

As shown in Table 2, the content of Fe 2 O 3 reached 36.35 wt%. When the copper ore tailings were roasted from 600 to 1,200°C, the roasted slag was magnetic which contained γ-Fe 2 O 3 [ 4 ]. Therefore, it was necessary and meaningful to roast to release sulfur first and recycle γ-Fe 2 O 3 subsequently.

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Mine tailings: reprocess, recover recycle – The ...

2019-9-13  Say a copper mine produced 1Mt of metal in 1999 at 90% recovery. The remaining 10% of copper, around 111kt, went to tailings. If the average copper price in 1999 was US$1,500/tonne then that 10% represented US$166.5 million of metal. Fast forward 20 years and at today’s price, US$5,842/tonne, if that material could be reprocessed and an extra ...

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Report of Investigation 17 - Michigan

2016-2-26  and 5-61 ppm magnesium. Traces of copper ranged from 4 ppm in iron tailings to 570 ppm in copper tailings. Iron content varied from 137 ppm in copper tailings to 1,248 ppm in iron tailings. Particle size separates ranged from fine sand to clay. The tailings are structureless with no consistency, and are easily eroded by wind and water.

More

Leaching copper tailings

2020-10-28  lic content could be turned into valuable ores. This ... the solution on scrap iron, the method that is at ... case for testing the possibility of leaching the copper tailings. The ore used,was a low grade copper tailing. The are is highly si1icous, which fact is favorable to

More

(PDF) Potentials of steel slag and copper mine tailings as ...

The effect of temperature, duration of sulphatizing roasting, as well as the amount of iron sulfates on the conversion of zinc, copper, iron and other components in the tailings into water-soluble ...

More

Geotechnical Properties of Mine Tailings Journal of ...

The engineering properties of tailings are important for the safety evaluation and engineering design of tailing dams. In the present study, laboratory experiments were performed to investigate the geotechnical properties of four different tailings, including two iron tailings (coarse and fine) and two copper tailings

More

RECOVERY OF COPPER FROM COPPER SLAG AND

2014-9-8  Recovery of copper from copper slag and copper slag flotation tailings 75by oxidative leaching Table 1. Chemical compositions of the copper smelter slag and the slag flotation tailings Constituent Content (wt.%) Copper Slag Slag Flotation Tailings Cu – total 0.97 0.59 Cu – oxides 0.15 0.06 Cu – sulphides 0.82 0.53 SiO 2 33.75 34.62 Al 2 O

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Waste Mine Tailings Characterisation

2017-6-16  This is especially true of the copper, iron, and uranium industries. A total of 31,191 million tons of overburden, waste rock, and tailings was generated by the metal-ore and non-metal mineral mining industries during the period 1960-1977. Of this total, approximately 40 percent was generated by the copper

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Recovering Iron from Iron Ore Tailings and Preparing ...

Iron ore tailings (IOTs) are a form of solid waste produced during the beneficiation process of iron ore concentrate. In this paper, iron recovery from IOTs was studied at different points during a process involving pre-concentration followed by

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Mineralogical characterization of copper sulfide tailings ...

2020-2-18  As ore grades constantly decline, more copper tailings, which still contain a considerable amount of unrecovered copper, are expected to be produced as a byproduct of froth flotation. This research reveals the occurrence mechanism of copper minerals in typical copper sulfide tailings using quantitative mineral liberation analysis (MLA) integrated with scanning

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Mine tailings: reprocess, recover recycle – The ...

2019-9-13  Say a copper mine produced 1Mt of metal in 1999 at 90% recovery. The remaining 10% of copper, around 111kt, went to tailings. If the average copper price in 1999 was US$1,500/tonne then that 10% represented US$166.5 million of metal. Fast forward 20 years and at today’s price, US$5,842/tonne, if that material could be reprocessed and an extra ...

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云南某含铜铁尾矿工艺矿物学研究-Study on Process ...

2019-7-6  The results showed that the copper grade in tailings was 0.15% and iron grade was 15.54%. The main copper mineral was chalcopyrite, which accounted for 66.67% of total copper, while the iron ore was mainly ferrosilicate and siderite and the content of

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