Mobile crushing line

Hot selling equipment


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 were investigated; however, this is considered to be

FreeChat

Leaching of iron from copper tailings by sulfuric

Its main components are fayalite (Fe 2 SiO 4) and magnetic iron oxide (Fe 3 O 4), accounting for more than 55% of the copper tailings. 1 In 2015, it is estimated that 68.7 million tons of copper tailings were produced worldwide. 2 Copper tailing is often discarded into stock dumps or sold for use in cement and roadbed production. 3,4 These methods not only waste limited mineral resources but also potentially

FreeChat

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

the leaching behaviors of iron can promote the utilization of copper tailings. 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,

FreeChat

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

01/10/2017  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 effectively obtained. Scanning electron microscopy and energy dispersive spectroscopy of the CIP revealed that some tiny copper particles were embedded in metal iron and some copper formed alloy

FreeChat

Distribution of Zinc, Copper, and Iron in the

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 their solid-phase partitioning. Acid ...

FreeChat

Base Metal and Iron Ore Mining - IFC

per liter (mg/l); copper levels up to 50 mg/l; iron levels up to 1,000 mg/l; lead levels up to 12 mg/l; zinc levels up to 1,700 mg/l; and cadmium levels of several milligrams per liter, depending on the contents of the ore. Effluent from tailings ponds may contain concentrations of chromium of several milligrams per liter. Base metal mining

FreeChat

RECOVERY OF COPPER FROM COPPER SLAG AND COPPER SLAG ...

Thus, the maximum copper and iron extractions achieved with the slag were 26.0% and 62.5%, respectively, as opposed to the slag flotation tailings where the maximum copper and iron extractions were 13.5% and 48.0%, respectively.

FreeChat

Tailings - Wikipedia

These tailings contain large amounts of pyrite (FeS 2) and Iron(II) sulfide (FeS), which are rejected from the sought-after ores of copper and nickel, as well as coal. Although harmless underground, these minerals are reactive toward air in the presence of

FreeChat

PAPER OPEN ACCESS Research on the Process of Sulphatizing ...

(Sredneuralsk Copper Smelter) has accumulated several million tons of such tailings that hold 0.3- 0.45% Cu, 2.7-3.2% Zn, 33-37% Fe [5], that makes them a promising raw material for the extraction of metals.

FreeChat

(PDF) Potentials of steel slag and copper mine

The mine tailings studied is from a copper mine in Arizona, USA and contains mainly silica, alumina and calcium. Sodium hydroxide (NaOH) solution is used as the alkaline geopolymerization agent ...

FreeChat

Recovering Iron from Iron Ore Tailings and

Under these conditions, the iron grade of the reduced iron powder was 92.30 wt %, and the iron recovery rate was 93.96 wt %. With respect to the original IOTs, the iron recovery was 78.79 wt %. Then, highly active slag-tailing concrete composite

FreeChat

Leaching of iron from copper tailings by sulfuric

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, were leached from the tailings.

FreeChat

Base Metal and Iron Ore Mining - IFC

per liter (mg/l); copper levels up to 50 mg/l; iron levels up to 1,000 mg/l; lead levels up to 12 mg/l; zinc levels up to 1,700 mg/l; and cadmium levels of several milligrams per liter, depending on the contents of the ore. Effluent from tailings ponds may contain concentrations of chromium of several milligrams per liter. Base metal mining

FreeChat

(PDF) Potentials of steel slag and copper mine

Although copper tailings have negative effects on the environment owing to their acidic content, they also have some great economic value in terms of valuable metal contents. The engineering ...

FreeChat

Recovery of valuable metals from polymetallic mine ...

The content of gold in solid phase of tailings increased about 7-16% and 2-9% after bio-oxidation process by L. ferrooxidans Teg and natural microbial consortium, respectively. It was shown that bioleaching of the samples of tailings could be performed using the natural consortium of drainage water. However, to increase the intensity of the recovery of valuable metals, natural consortium of ...

FreeChat

Utilization of Copper Mine Tailings as Road

The geopolymer binder was produced with copper mine tailings (MT) and low-calcium slag (SG). The effect of water to solid (w/s) ratio, SG content (0, 25 and 50%), sodium hydroxide (NaOH) concentration (5, 10 and 15 M), and sodium silicate (SS) to sodium hydroxide ratio (0.0, 0.5, 1.0 and 1.5) on the unconfined compressive strength (UCS) were studied systematically. Scanning electron microscopy ...

FreeChat

Tailings - Wikipedia

Tailings are the materials left over after the process of separating the valuable fraction from the uneconomic fraction of an ore.Tailings are distinct from overburden, which is the waste rock or other material that overlies an ore or mineral body and is displaced

FreeChat

Geochemistry of Surface Samples of the Tailings Deposits ...

records of other forms of mining (Iron, Zinc and Zinc-Copper). There are still some records in which the origin of small deposits, marked with S/I (abbreviation of no information) is unknown. Economic impact of tailings deposits The data can be the basis of initial economic information for the possible recovery of valuable elements in tailings deposits, an idea reviewed by various actors, and ...

FreeChat

Recovering Iron from Iron Ore Tailings and

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 direct reduction and magnetic separation. Then, slag-tailing

FreeChat

Tailings Ash Disposal - Feluwa Pumpen GmbH

Media currently handled for this application. Abrasive sludge, aluminium sludge, ash slurry, bauxite sludge, coal sludge, copper tailings, fly ash sludge, iron ore tailings, liquid manure, mining slurry, moor sludge, ore sludge, red mud, sand sludge,

FreeChat

From Tailings to Treasure? Miners Make Money

New technology allows it to recover up to 40% of the gold left in particle form in tailings. DRD Gold extracted 33,600 ounces of gold, worth nearly US$40 million, in the last quarter of 2013. Mintails, a mine tailings processor, has developed new technology to process 350,000 tons of slimes from its extensive tailings

FreeChat

Distribution of Zinc, Copper, and Iron in the

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 their solid-phase partitioning. Acid-base

FreeChat

Copper tailings as a potential additive in concrete ...

copper tailings was performed. The specific gravities of the fine, coarse aggre gates and copper tailings were 2.70, 2.54 and 4.29, respectively. The high specific gravity of the copper tailings was attributed to the high concentration of iron (III) oxide in it. Similarly, the water absorption

FreeChat

Evaluation of metal mobility from copper mine

This work shows the results obtained on a copper mine tailing in the Antofagasta Region, Chile. The tailing was classified as saline-sodic with high concentrations of metals, especially Cu and Fe, with pH 8.4. Our objectives were to (1) compare the physicochemical properties of the tailing with surrounding soils of the mine under study, and (2) evaluate the effect of two amendments (CaCO3 and compost)

FreeChat

Treatment of copper mine tailings using a y, A^M- Email ...

These copper tailings have trace concentrations of Fe, As, Mn, Hg, Zn, Se, and Cd The iron oxides and sulfides cause acid generation and contaminate the surface and ground water. The objective of this study is to design and demonstrate the recovery and transport of mine tailings in a slurry; recover as much of the valuable metals as feasible; treat the tailings to a pH of 7.0 or higher; and ...

FreeChat

Production of Eco-Friendly Bricks from Copper Mine ...

content (8 to 18%), forming pressure (0 to 35 MPa), ... copper mine tailings (MT), reagent grade 98% sodium hydroxide (NaOH), and de-ionized water. Table 1 shows the chemical composition of the mine tailings. It can be seen that the mine tailings consist mainly of silica and alumina with substantial amount of calcium and iron. Grain size distribution analysis was performed on the mine tailings ...

FreeChat

Utilization of Copper Mine Tailings as Road

The SEM, EDS and XRD analyses clearly show the participation of iron dissolved from SG in the formation of geopolymer gels. This research helps to promote the reuse of MT and SG through geopolymerization and contributes to the knowledge of geopolymer materials. Finally, the production of geopolymer concrete by using copper mine tailings (MT) and low-calcium slag (SG) as both the

FreeChat

Geochemistry of Surface Samples of the Tailings Deposits ...

), iron (Fe 2 O 3), calcium (CaO), magnesium (MgO), manganese (MnO), sodium (Na 2 O), potassium (K 2 O), phosphorus (P 2 O 5), sulphate (SO 3) and compounds lost by calcination (PPC, such as carbonates, for example). Percent content of sulphur (S). 30 common trace elements (below 1%): copper (Cu), vanadium (V), chromium (Cr), cobalt

FreeChat

Environmental Risks From Mine Tailings

10/08/2018  Tailings from copper and uranium mining often produce measurable levels of radioactivity. Tailing Ponds Some mining wastes become very fine after they have been ground up during processing.

FreeChat

What is copper tailing and copper slag? - Quora

But wait - that's the anhydrous material. The blue crystal form is properly called cupric sulfate pentahydrate, because there are five additional water molecules included in the crystal. Each water molecule H2O weighs 18 (2+16), so that's an additional 90 parts deadweight. The copper content is 63.5 parts in 249.5, or about 25.5%.

FreeChat

From Tailings to Treasure? Miners Make Money

Australian Broadcasting Company reports that Western Australian company Carbine Resources is investigating the technical viability of extracting an estimated million ounces of gold and 60,000 tons of copper left in the tailings at the old Mt. Morgan Mine site in central Queensland. Numerous other tailings projects are underway in Australia.

FreeChat