Reference showed that there is a substantial amount of copper in tailings, waste rock, and slag, and proposed that this copper would soon be recoverable using new technology. Nevertheless, reprocessing copper tailings remains relatively sparse. Only 30,000 t of copper per year were produced from projects that use tailings as primary source ...

Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by …

Standard cost models with capex and opex for flotation, leaching, and magnetic separation were adopted to the needs of tailings reprocessing. A copper tailing (around 2 M t) that also contains magnetite was chosen as a case study. A combination of magnetic separation and leaching gave the best economic results for copper and magnetite.

Copper tailings reprocessing can mitigate GHG emissions and toxicity impacts in 2050. •. Tailings reprocessing can supply up to 2 % of future European copper demand. •. Tradeoffs exist between climate change and ecotoxicity impacts for different …

This study investigates copper ore tailings deposited in Repparfjorden, Norway in the 1970's. Bathymetric show that the tailings deposit still occurs as a series of cone-shapes and has retained its original shape for four decades. Analytical data of 51 chemical elements show that some of the tailings are spreading, affecting fjord surface ...

than 8 billion tonnes of tailings were produced from the extraction of metals and minerals (Figure 3). The largest volume of tailings, 46 per cent, is produced from copper mining (Figures 4 and 5). The precise number of active tailings storage facilities is currently unknown. Although incomplete, the Global

The dewatering of tailings is one of the serious challenges that the mining and mineral processing industries have encountered internationally. Solid–liquid separation methods are applied to wastewater, which generally consists of fine particles and water; fine particles are settled in thickeners by the flocculation method and the cleaned water is …

The recent addition of a sulphidisation, acidification, recycling and thickening, or SART, plant from BQE Water will only bolster cash reserves through the recovery of a high …

economical potential for the reprocessing of several metals, such as copper, molybdenum, silver, iron, cobalt, zinc and lead. In this work, three industrial case studies of Chilean historic tailings are discussed. The first case corresponds to the reprocessing of secondary copper from an abandoned tailings dam. The second

The present research aims at recovering copper and cobalt through reprocessing of tailings from flotation of oxidised ores of copper and cobalt achieved at the Kambove Concentrator (DRC). It focuses on the determination of the reagents' dosage that enables obtaining the highest recovery of copper (44.80%) and cobalt (88.30%) …

Copper is widely used in the modern world. An excellent conductor of electricity, it is used in the electrical industry, in the construction industry because of its good corrosion resistance, and in the manufacture of heat exchangers in heating and cooling systems owing to its excellent thermal conductivity. Copper production has …

Tailings are the waste materials left after the target mineral is extracted from ore. They consist of crushed rock; water; trace quantities of metals such as copper, mercury, cadmium, zinc; and additives used in processing, such as petroleum byproducts, sulfuric acid and cyanide.

The analysis reveals that together, copper tailings from the large (i.e., porphyry) and medium-size copper deposits (i.e., volcanogenic massive sulfide and …

In gold, copper sulfide and iron ore tailings, the potential of extracting minerals is an opportunity. Reprocessing tailings to collect the valuable minerals can be a cost-effective approach ...

Results indicate that reprocessing may save from 25 up to 930 kg CO2-eq per tonne of treated copper tailings. Potential environmental benefits depend on the reprocessing routes, technology ...

Abstract This research aimed at recovering metals retained in the tailings from the flotation of copper (Cu) and cobalt (Co) ores conducted at the New Concentrator in Kipushi (NCK). Metals retention in the tailings (0.73% Cu and 0.37% Co) increased due to the removal of the gravity separation section from the processing circuit together with …

Abstract in English Copper is widely used in the modern world. An excellent conductor of electricity, it is used in the electrical industry, in the construction industry because of its good corrosion resistance, and in the manufacture of heat exchangers in heating and cooling systems owing to its excellent thermal conductivity. Copper …

Recovering Copper and Reprocessing Tailings. In recent years, the need for efficient recovery, recycling and reuse strategies for waste streams to address climate change, environmental damage, and supply deficits has become clear to researchers and governments. Several technological solutions have been developed, and governments …

Results indicate that reprocessing may save from 25 up to 930 kg CO 2 -eq per tonne of treated copper tailings. Potential environmental benefits depend on the …

Several methods are appropriate for reprocessing mine tailings and recovering copper. These methods have been extensively explored in recent research. …

Satellite view of a Turkish copper mine tailings dam including (A) dam and (B) slope photos. ... As mentioned above, the reprocessing of tailings as a primary input material in different sectors can diminish the extraction of new ore bodies and certify the lucrative usage of the tailings. This situation accelerates the conversion from linear to ...

In gold, copper sulfide and iron ore tailings, the potential of extracting minerals is an opportunity. Reprocessing tailings to collect the valuable minerals can be …

As copper tailings appear in ground form, the grading of copper tailings reported by Gupta and Thomas (2013) and Nitish et al. (2013) has a sizeable silt fraction of 0.06–0.002 mm. Copper tailings are considered to be finer than CS, which usually has a dominant sand fraction. Table 6.5 compares the geotechnical properties of copper tailings to …

The tailings reprocessing would be consisted of following main steps: excavation, ... Techno-economic parameters of biological reclamation of fl otation tailings dump "Valja Fundata" in the copper ...

waste management through mine tailings reprocessing at a regional scale. Sulfidic copper tailings in the EU were se-lected as a case study. We perform prospective life …

I'm going to use a theoretical example here. 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.

The current work presents a viable, practical approach to tailings stacking that reduces the release of the heavy metal ions copper and acid through the appropriate proportioning of ores. Mine waste rock reprocessing using sensor-based sorting (SBS): Novel approach toward circular economy in phosphate mining

In addition to the metals recovery from the tailings, also the mineral fraction in the tailings can be valuable. With reprocessing, the mine tailings can be modified to be utilized in high-value products. E.g. the recent article by Wong-Pinto et al. (2021) reports biosynthesis of copper nanoparticles from copper tailings. In addition, the ...

Worldwide, an issue of copper production is the generation of mine waste with varying characteristics. This waste can pollute natural environments, and in particular, the heavy metal emissions of the tailings may pose long-term consequences. Currently, life cycle assessments of mine tailings are hampered by both limited data availability in the …

Copper miners are taking another look at extracting value from their waste rock dumps thanks to the record recent copper price rally and the application of new technology. ... There is an ...