Improving Flocculation Performance of Copper Flotation …
The purpose of this study is to identify the physical, mineralogical, and electrochemical properties of copper flotation tailings as well as to investigate how …
processing of copper tailings
The Challenges and Prospects of Recovering Fine Copper …
Flotation is a common mineral processing method used to upgrade copper sulfide ores; in this method, copper sulfide mineral particles are concentrated in froth, and associated gangue minerals are separated as tailings. However, a significant amount of copper is lost into tailings during the processing; therefore, tailings can be …
Experimental Study of the Sulphatizing Roasting of Flotation Tailings …
Grudinsky et al. (2021) and Wan et al. (2021) studied sulfation roasting, followed by extraction with water, of respectively tailings of copper slag processing and copper slags and found technical ...
Recovery of cobalt and copper through reprocessing of tailings …
It is an attempt oriented towards the lowering of the mineral processing industry footprint on the environment through the reprocessing of tailings from the beneficiation of oxidised ores of copper and cobalt [17]. As the matter of fact, it is expected that the reprocessing of tailings can enable minimising the release of pollutants to ...
Toward sustainable reprocessing and valorization of sulfidic copper …
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. ... that otherwise would generate voluminous toxic waste such as tailings in the upstream metal ore processing. Gleaning metals from low-quality ores/deposits, as analyzed by Norgate …
Enhanced recovery of low-grade copper ore and associated …
Bao et al. [11] explored the process flow for reprocessing iron tailings and determined the adoption of a process flow of "copper-zinc mixed flotation - regrinding - copper-zinc separation - zinc flotation - iron magnetic separation - reverse flotation of iron concentrate" to recover Cu, Zn, Fe, and associated precious metals from iron tailings.
Selective Process Route to Recover Magnetite from …
Copper mine operations consistently generate a large quantity of tailings after their concentration processing. These tailings are either piled up or stored in a dam, where both alternatives of disposal lead to environmental impacts. The dam copper tailings have a huge potential for by-product production thus improving sustainability …
Copper Recovery and Reduction of Environmental Loading from …
The flotation tailings obtained from Bor Copper Mine contain pyrite (FeS2) and chalcopyrite (CuFeS2), these sulfide minerals are known to promote acid mine drainage (AMD) which poses a serious threat to the environment and human health. This study focuses on the treatment of mine tailings to convert the AMD supporting minerals …
The Reprocessing and Revalorization of Critical Minerals in Mine Tailings
Mine tailings, the byproduct of mining and mineral processing, are increasingly mass produced as a result of increased demand for metals and minerals as well as the advancement in technology that allows for the exploitation of lower-grade ores. Lower grades can increase the volume of tailings that may contain new gangue …
Feasibility of re-processing mine tailings to obtain critical …
1. Introduction. Mine tailings are waste obtained after the processing of some minerals to acquire one or more elements of interest. They are composed of a mixture of heavy metals, water, sand, and fine-grained solid material, and generally are deposited in ponds without further treatment (Babel et al., 2016; Santibañez et al., 2012; L. Wang et …
The Challenges and Prospects of Recovering Fine …
In the actual flotation process, a significant quantity of copper sulfide particles (finest and coarsest fractions) is lost in tailings, which are disposed of into the tailings storage facilities (TSFs). Since the conventional copper ores have been becoming depleted, copper tailings are gaining increasing attention as potential resources.
Development of Copper Recovery Process from Flotation Tailings …
In this study, a novel SO2 removal process using copper tailings coupled with copper recovery was proposed, a pilot-scale device was set up, and an economic evaluation was conducted. Effects of ...
Copper Tailing
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 …
Processing Tests, Adjusted Cost Models and the Economies …
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 …
Process effluents and mine tailings: sources, effects and
There are various processes in management of mine tailings such as minimizing tailings production and increasing tailings reuse, adoption of a risk-based …
Toward sustainable reprocessing and valorization of sulfidic …
Copper tailings reprocessing can mitigate GHG emissions and toxicity impacts in 2050. •. Tailings reprocessing can supply up to 2 % of future European …
Prospective environmental assessment of reprocessing and …
The environmental impacts of reprocessing copper mine tailings were studied. • Process modeling and technology upscaling were performed for inventory analysis. • Tailings reprocessing resulted in climate-positive impacts from a life cycle perspective. • Mineral recovery is essential to ensure significant benefits from …
Improving Flocculation Performance of Copper Flotation …
process of the copper otation tailings. The eects of pH, occulant type and dose, mixing duration, and rate on occulation were examined using jar experi-ments. It was seen that better occulation perfor-mance was obtained with the UMA polymer (Mag-nooc 5250) compared to conventional polymers in dewatering copper tailings. The optimum …
Development of copper recovery process from flotation tailings …
A new flotation tailings treatment process was developed for efficient Cu recovery. • An efficient Cu dissolution was achieved in an H 2 O media in presence of pyrite.. The dissolution mechanism of CuFeS 2 has been confirmed to be a multistage reaction.. Fe was always co-dissolved with Cu following a linear relation of C Fe = …
Past, Present, and Future of Copper Mine Tailings …
Copper mine tailings consist of a slurry of ground rock (considering different metals), water, and chemical reagents that remain after metallurgical processing. The …
Environmental Impact Assessment of Mine Tailings Spill …
The generation of tailings in the world today is immense, since only ounces or pounds of metals are extracted for each ton of ore processed. In 2022, it was estimated that more than 14 billion metric tons of mining tailings were produced per year in the world. Currently, many environmental problems associated with tailings management in both …
Development of copper recovery process from flotation tailings …
The vast majority of copper present in Cu‒loaded organic phase An efficient copper recovery process (total copper recovery of 86.2%) is proposed for the utilization of concentrate of flotation tailings as one of the new copper resources using a combined hydrometallurgical process of HPL–solvent extraction.
Research on the Process of Sulphatizing Roasting of Copper …
The present study focuses on the experimental investigation of sulphatizing roasting of flotation tailings from copper slag processing using iron (II) and (III) sulfates followed by water leaching ...
Mine tailings-based geopolymers: A comprehensive review
The copper mine tailings-geopolymer composites, which had been activated by sodium silicate solution, were baked in a moderate-temperature oven. They also observed that the flexural strength of copper mine tailings-geopolymer composites improved in a way similar to that shown in the compressive strength relates.
Mine tailings: reprocess, recover & recycle
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. ... there are now some cases where the reprocessing of tailings works out cheaper than processing material.
Low Energy Process Development for Chibuluma Copper Tailings
Copper froth flotation tailings containing 1.19 and 0.97 wt% total and acid-soluble copper, respectively, from Chibuluma mines in the Copperbelt province of Zambia were characterized by SEM and XRD techniques. ... Low Energy Process Development for Chibuluma Copper Tailings. In: Iloeje, C., et al. Energy Technology 2024. TMS 2024. …
Recovery of iron from copper tailings via low …
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 was carried out, and the corresponding
New approaches for extracting and recovering metals from mine tailings
Mineral tailings from two copper mines were bioleached under different conditions. • Greatest copper extraction was achieved at extremely low pH, at 45 °C and under oxidative/reductive conditions.. Copper present in tailings PLS was selectively precipitated as CuS by biogenic H 2 S.. Microbial communities were dominated by Sb. …
Socio-Environmental Risks Linked with Mine Tailings …
The main chemical reagents used in the metallurgical flotation process of copper sulphide minerals and present in copper mining tailings are presented below [2,47]. The following types of reagents are disclosed: (i) acids, (ii) alkalis or pH regulators, (iii) modifiers, (iv) collectors, (v) ing agents, and (vi) flocculants .
Recycling and Reuse of Mine Tailings: A Review of …
of tailings sources were identified, such as lead, zinc, copper from overload, rock wa ste, processing tailings, metallu rgical slag, and w ater treatment residuals, among others . It
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