copper flotation leaching

Removal of arsenic impurity in ores and concentrates containing copper (Cu) through alkaline leaching in NaHS media was investigated in this work. ... Beneficiation of a gold bearing enargite ore by flotation and As leaching with Na-hypochlorite. Minerals Engineering, 18 (2005), pp. 849-854.

Response surface methodology is used to optimize the leaching process for refractory flotation copper tailings. The proportion of the refractory combination oxide copper (chrysocolla) is 64.84%. At …

DESCRIPTION: Flotation followed by cyanidation of flotation concentrates.In this flowsheet the flotation concentrates produced are reground and treated by cyanidation leaching. ORE TREATED: Sulphide ores wherein base metal values are negligible (such as pyrite) but with good gold and silver values, or in cases where …

Copper Leaching from Refractory Flotation Tailings Xu Bai 1,2, Shuming Wen 1,2, Jian Liu 1,2,* and Yilin Lin 2 1 State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization,

DOI: 10.1016/j.jhazmat.2008.01.063 Corpus ID: 24030416; Investigation of the possibility of copper recovery from the flotation tailings by acid leaching. @article{Antonijevic2008InvestigationOT, title={Investigation of the possibility of copper recovery from the flotation tailings by acid leaching.}, author={Milan M. Antonijevic and …

Ammonia-thiosulfate-copper leaching, aided by a direct current electrochemical impact, is proposed to extract gold (Au), silver (Ag) and copper (Cu) from old flotation tailings mixed with waste rock. Over 80 % of Au available in the waste material and over 75 % of Cu and Ag were extracted into the pregnant leach solution (PLS) at room temperature.

High-arsenic copper flotation concentrates, in which the major arsenic-bearing mineral was tennantite, were leached with an alkaline sulphide system. ... Most of the published works that present experiences of leaching copper concentrates or smelting powders with high arsenic content, indicate that leaching with Na 2 S – NaOH is highly ...

The obtained Cu-concentrate is sent to the pyrometallurgical process. If grinding is not fine enough for efficient flotation, copper is lost in tailings. In this paper, the ferric leaching of slag ...

Reduction of "oxide copper", by acid leaching prior the flotation concentra- 66.061.34 tion, can increase the overall copper efficiency up to more than 70% in the single-stage leaching, achieving an efficiency in the flotation concentration stage higher than 75%.

By inoculating the Tizert copper flotation concentrate with the three selected Acidithiobacillus ferrooxidans DSM 583, Leptospirillum ferriphilum DSM 14647 and Acidithiobacillus thiooxidans DSM 14887, copper yield increased significantly to 95 %, compared to the leaching process without inoculation. This finding has been confirmed …

This study presents the novel idea of a cyanide-free leaching method, i.e., glycine-ammonia leaching in the presence of permanganate, to treat a low-grade and copper-bearing gold tailing. …

conditions for the leaching of a copper–cobalt flotation tailings were calculated as 50 g/L, 60 min, 45°C, 15 %, 2.5 g/L for Cu and 100 g/L, 60 min, 65°C, 15 %, and 2.5 g/L for Co.

This study investigated leaching of metals i.e. Cu, Co and Zn from flotation tailings of a copper smelter slag using sulphuric acid solutions in the absence/presence of hydrogen peroxide.

The column bioleaching of copper flotation tailings by mixed cultures was carried out in three heap construction methods for 83 days.As shown in Fig. 2 a, in Method A and B, the copper concentrations increased slowly, then remained stable in the late bioleaching stage. The addition of Yulong mineral in Method B resulted in a higher …

The increase of grinding fineness from 50% to 70% of grain size < 0.074 mm showed a positive impact on flotation indicators, recovery rate, copper grade and yield, …

Response surface methodology is used to optimize the leaching process for refractory flotation copper tailings. The proportion of the refractory combination oxide copper (chrysocolla) is 64.84%. At present, few studies have examined the leaching of chrysocolla. In this study, we examine the effects of several variables, including the …

Copper and zinc extraction by ammoniacal leaching from microwave-roasted Cu-Zn-Pb sulfidic tailings followed by recovery of copper and zinc by ion …

The leaching toxicity of the CS flotation tailings is within the safety limits. Abstract. Recovering arsenic from copper smelting slag (CS) into concentrate by …

The treatment of copper ores, both oxides and sulfides by means of flotation, hydrometallurgy or other processes has been well established for many years. Flotation has been applied generally to the treatment of sulfide ores, both in small and large scale operations. Hydrometallurgical methods alone or in combination with …

Gravity concentration, froth flotation, roasting and leaching are the three primary routes discussed in the literature. Among all the ... the direct flotation of copper oxides without sulfidation treatments using various collectors, such as fatty acids, …

Gravity concentration, froth flotation, roasting and leaching are the three primary routes discussed in the literature. Among all the ... the direct flotation of copper oxides without sulfidation treatments using various collectors, such as fatty acids, hydroxamates, petroleum sulfonates, etc., has been extensively studied [131]; [132]; [133 ...

leaching process has no significant effect on degree of copper. Optimum leaching time is 4 h. Based on the results, shown in Figure 4, the optimal ratio of S:L for the copper …

Flotation-high-pressure oxidative leaching-Solvent extraction process: Copper grade achieved 0.6 mass% from the initial 0.35 mass% under the optimal flotation conditions, whereas the recovery of copper was about 78%. Then, the leaching percentage of copper from the concentrate of mine tailings achieved 94.4% under the …

World Academy of Science, Engineering and Technology International Journal of Materials and Metallurgical Engineering Vol:6, No:8, 2012 Leaching Characteristics of Upgraded Copper Flotation Tailings Mercy M. Ramakokovhu, Henry Kasaini, Richard K.K. Mbaya Abstract—The copper flotation tailings from Konkola Copper With solvent extraction …

Copper Agitated Leaching and cementation process of copper problem: The treatment of copper ores, both oxides and sulfides by means of flotation, hydrometallurgy or other processes has been well …

Development of copper recovery process from flotation tailings by a combined method of high‒pressure leaching‒solvent extraction - ScienceDirect. Journal …

Copper can be recovered from the slags by froth flotation after cooling, crushing, and grinding. The obtained Cu-concentrate is sent to the pyrometallurgical process. If grinding is not fine enough for efficient flotation, copper is lost in tailings. In this paper, the ferric leaching of slag flotation tailings is studied.

Abstract. In this study, a hydrometallurgical method for the recovery of copper, cobalt, and zinc from copper slag flotation tailings (SFT) was investigated. …

High-arsenic copper flotation concentrates, in which the major arsenic-bearing mineral was tennantite, were leached with an alkaline sulphide system. At a pulp density of 5 wt% solids with 100–150 g/L Na 2 S and 50 g/L NaOH, over 91 wt% As was dissolved within 2 h at 100°C. From concentrates containing 3.4–4.9 wt% As, leach …

Antonijevi'c et al. (2008) and Asadi et al. (2017) used sulfuric acid as leaching agent and ferric sulfate as an oxidant agent for the leaching of copper and zinc from the flotation tailings ...

Reduction of "oxide copper", by acid leaching prior the flotation concentration, can increase the overall copper efficiency up to more than 70% in the single-stage leaching, achieving an ...

The following parameters were therefore recommended for chemical leaching of copper converter slag flotation tailings: pulp density 30% (w/v), pH 1.5, 70 °C, initial Fe 3 + concentration 15.7 g/L, no aeration, leaching for 1.5 h. These conditions resulted in solubilization of 81.6 and 37.7% of copper and zinc, respectively, while iron …

Initially, atmospheric leaching of copper sulphide flotation concentrate from Lubin Concentrator (KGHM, Poland) was used for recovering of copper and accompanying metals (Zn, Co, Ni, Mo, V) [19 ...

Copper is leached at a rate of 53.8% when initial H 2 SO 4 concentration is 0.428 mol/L, leaching temperature is 348 K, liquid-to-solid ratio is 3: 1, stirring speed is …