Copper flotation tailings (FTs), resulting from the separation and beneficiation processes of ores, are a significant source of environmental pollution (acid mine drainage, toxic elements leaching, and dust generation). The most common disposal method for this industrial waste is dumping. However, due to their favorable physical and chemical properties—the high …
Recent focus on hydrometallurgical methods for non-sulfide copper ores prompted a study on leaching a copper oxide ore containing 2.22% Cu, 44.9% SiO2, 6.94% Al, 6.61% Fe, 6.25% Mg, 3.67% Ca, and 1.7% Na with H2SO4 for gaining insight into the behavior of impurities in the leaching process. The effects of leaching time (30–180 min), acid concentration (0.25–2 …
Obtaining high recovery in copper flotation plants has been always under investigation in recent years. Misreported copper into tailing dramatically declines copper recovery. This study aims to find the possible reasons of …
As discussed above, there are two major reasons for tailing loss of copper in the flotation process: (i) tailing loss of ultrafine particles due to the excessively low collision efficiency between particles and air bubbles in flotation cells; and (ii) coarse unliberated Minerals 2022, 12, 586 7 of 20 copper minerals associated with gangue ...
One approach is to reprocess mining tailings to extract the vital copper resources within. ... Flotation methods are suitable for the reprocessing of low-grade copper tailings. A three-phase system (solid, liquid, gas) separates substances using chemical reagents. ... Keeping Up with Demand: Copper Tailing Reprocessing. AZoMining. Retrieved on ...
We conducted a 2⁴ factorial design on the main parameters that influence flotation performance. The results showed an optimum flotation condition at dosages of 80 g/t, 30g/t, and 150 g/t of...
Large amounts of tailings are produced when copper minerals are concentrated by otation. For instance, the otation process is performed with water contain-ing 25–35% wt solid ratio and is consumed 1.9–3 m3 water per ton of ore processed (Gunson et al., 2012; Li et al., 2019). However, the tailing slurry containing
This molybdenum flotation circuit, based on 250-500 tons per 24 hours is designed for low-grade molybdenum ore having high-grade streaks and with pyrite-quartz gangue.It is also basically sound for many other friable sulphide ores, such as antimony, silver and even some lead ores. The basic ideas stressed in this moly flotation flowsheet are the importance of simplicity …
As a result of this research, an efficient method has been proposed to recovering substantial amounts of copper from flotation tailings and reducing the environmental impact of …
Minor metals, expressed in mg/kg, are mainly represented by copper and manganese. The tailing has a copper concentration above 1500 mg/kg, which is considered high for residual waste because the tailing used came from an old deposit and was produced by less efficient processes of ore flotation.
One particularly significant and recently studied waste stream is mine tailings, a byproduct of sulfide ore concentration procedure [].These tailings are transported to tailings deposits [] with a focus on achieving chemical and physical stability [2,6].To meet these objectives, it is imperative to remove toxic agents and potential sulfuric acid producers, …
In mix ore (enargite + chalcopyrite) flotation, 97% of enargite was first removed at pH 4 followed by chalcopyrite flotation at pH 8, and over 95% recovery was achieved in 15 min flotation time.
In this work, recovery of copper and nickel from mine tailing by combined process of flotation and high pressure oxidative leaching were considered. In the first stage, effects of 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 polymer …
Tailings from control copper flotation of disseminated ores, as a rule, contain no more than 30–35% S, and are therefore sent to pyrite flotation, which is carried out after removing excess …
Based on findings from plant scale survey data and laboratory tests, the following conclusions can be deduced: Almost 95% of overall loss in final tailing was due to copper lose in the rougher flotation circuit. The results of two surveys of sampling showed that the rougher flotation recovery of mixed copper ore was 8% less than sulfide ore.
During the Cu–Mo ore flotation using an optimally dispersed microemulsion of the combined collector agent, a collective Cu–Mo concentrate was obtained with a copper content of 18.2% with an ...
The Erdenet tailing storage facility (TSF) is one of the largest in the world with a total area of 18.6km2. Over 40 years of history of Erdenet mining, the process tailing has been collected in the tailing dam and now becomes the biggest resource for research. The goal of this research work is to define the optimized condition of the flotation with...
The industrial plant processes around 24.0 Mtpy of copper ore containing a feed grade of around 1.0 wt% of Cu, generating close to 23.5 Mtpy of copper tailing finer than 85 µm. ... The process route proposed in this study treats the copper tailing from the flotation plant and considers classification by hydrocyclones, low and high fields ...
This paper reviews the literature on the recovery of the above mentioned minerals by flotation. The increasing complexity of ore deposits, declining ore grades and higher global demand for copper ...
For example, where flotation took place immediately after vanning, the residue assayed $2.60 gold and 0.30% copper, but where tailing from panning was allowed to remain under water for 6 hours before flotation, the residue assayed $3.10 gold and 0.67% copper.
A representative sample of a carbonate-type Pb-Zn ore flotation tailing was collected from the tailing dump of Orex Mining Co. in Yahyali, Kayseri, Turkey. ... copper leaching rates demonstrated upward tendencies using sulfosalicylic acid from a copper oxide ore. The sulfosalicylic acid is completely ionized as the following reaction equations ...
Flotation methods are suitable for the reprocessing of low-grade copper tailings. A three-phase system (solid, liquid, gas) separates substances using chemical reagents. Particles attach to air bubbles, forming a …
Abstract The post-leaching of silver (Ag) from a non-sulfide lead–zinc (Pb–Zn) ore flotation tailing leach residue in a copper–ammonium thiosulfate solution was investigated. Ag (89.7%) was extracted into the leaching solution under the following conditions: 30 g/l ammonium thiosulfate, 0.5 g/l copper sulfate, 25 °C leaching temperature and 4 h leaching time. On the basis of the ...
optimized condition of the flotation. The best recovery of tailing sample with 0.1% of Cu was 1.4% of Cu grade and 32.27% of cumulative recov-ery. Keywords: Recovery, Flotation, Copper, Tailing, Erdenet Mining 1 Introduction For modern society, raw resources are an important factor to function in the long term.
Approximately 13.7 million tons of copper mine tailing as a solid waste is generated annually as a result of mining and ore processing activities in the region.
PDF | On May 10, 2021, Maciej Gruszczyński and others published The influence of the flocculant on the process of thickening and depositing of copper ore flotation tailings | Find, read and cite ...
Copper slag flotation tailing (CSFT) is a by-product of Cu pyro-metallurgical production, which accounts for more than 80 % of all Cu products produced worldwide [1].During Cu extraction, molten Cu slag is generated, which consists of a matrix of iron silicates (Fe 2 SiO 4), metal oxides, and matte droplets [1].Copper is usually recovered by froth flotation after …