secondary copper ore recovery
Relationship between ore mineralogy and copper recovery …
The flotation recovery of sulfide ore in a sedimenthosted copper-cobalt deposit in the Democratic Republic of Congo has been predicted by the correlation of mineralogical data delivered by the ...
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Collective Recovery of Copper and Silver from Secondary …
The following part of this study is aimed at analyzing the effect of preliminary oxidizing roasting and microwave treatment of the electrolytic refining slime of secondary …
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Economic potential and environmental impact of metal recovery …
After copper recovery by flotation, the remaining part of the slag is considered waste and disposed of in the slag dump area. ... (SiO 2) in the ore, copper oxide and sulfide compounds form Cu–Fe–O–S phases by covalent bonding. ... Environmental benefits of secondary copper from primary copper based on life cycle assessment in China ...
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Processing of Complex Materials in the Copper Industry: …
If we consider only the top 20 copper mines with the most important reserves of copper (over 1,000 million tonnes of copper reserves) the average copper ore grade of this group is only 0.76% copper, including deposits with a high average copper ore grade, such as Tenke Fungurume with 2.32%Cu, Resolution with 1.5%Cu, Taimyr Peninsula …
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Novel Biotechnological Approaches for the Recovery of …
The average copper recovery for glutamic acid was estimated as 43.6%. Mineral liberation analysis (MLA) was performed on ore samples as well as leaching residues to detect mineralogical changes. The feed sample contained significant quantities of four copper minerals—namely chalcocite (3.5 wt %), bornite (1.4 wt %), chalcopyrite …
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Copper (Cu) Ore | Minerals, Occurrence » Geology Science
Azurite: Azurite (Cu3 (CO3)2 (OH)2) is a blue-colored carbonate mineral that is often found in oxidized copper ore deposits. It forms as a secondary mineral through the weathering and alteration of primary copper minerals. Azurite is known for its striking blue color and is used as a gemstone and in jewelry.
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Flotation separation mechanism for secondary copper …
The high-sulfur secondary-sulfide copper ore collected from the Zijinshan copper mine in the Fujian province contains 0.4% copper, ... The artificial mixed-mineral experiment verified that EIBXAC could improve the grade of copper concentrate while maintaining recovery. (2)
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Bioleaching of copper secondary sulfide ore in the presence …
Secondary sulfide copper ore was leached in the presence of chloride by means of inoculation with chloride-tolerant culture • Culture contained Leptospirillum strain Sp-Cl and A. thiooxidans-like strain.. Highest copper recovery was achieved at 6 g/L Cl-. Similar CuT extraction and slightly higher Py oxidation was achieved in Cl--tolerant over …
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Recovery of valuable metals from copper slag | Mining, …
The copper smelting process produces plenty of copper slag every year, which is a hazardous solid waste, but a secondary resource. In the present study, the extraction of copper, nickel, and cobalt from copper slag was investigated through the process of sulfation roasting–water leaching and the process of sulfation roasting–sulfate …
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BASF, hydroGeophysics enhance leached copper recovery
BASF and hydroGeophysics Consulting (HGI) created a strategic partnership that will enhance secondary copper recovery through novel mining technologies. …
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Prediction of China's copper material flows under carbon …
The copper content of the copper concentrate was set at 25% according to the standard for copper ore considered as a secondary product in China nonferrous metals trade standards (PRC, 2007). ... but it nevertheless suggests that active resource recovery and secondary material are potential options to live with the constrains of CO 2 …
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BASF and HGI partner to enhance secondary copper recovery …
By adding BASF's LixTRA leach aid, greater ore-lixiviant contact is made, which ultimately leads to higher copper dissolution and increased metal recovery. Initial results from a customer's site have demonstrated a 20% increase in copper recovery during the trial period, prompting further testing on a larger scale to quantify the benefits.
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Recovery of Copper, Iron, and Alumina from Metallurgical
Secondary Material Streams and Zero-Waste Approach. The main focus of the HARARE processes is on the recovery of copper and alumina back into their respective value chains, but in a completely zero-waste approach, every material stream will be valorised. Some details on the approaches to valorise the secondary material streams …
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Copper recovery improvement in an industrial flotation …
Copper oxide reserves consist of economic quantities of copper in the form of secondary copper minerals such as malachite (Cu2 (OH)2CO3), azurite (Cu3(CO3)2(OH)2), cuprite (Cu2O), and tenorite (CuO). Large amounts of copper oxides go unrecovered because of a focus on sulfide recovery and problematic oxide processing (Zhou and Chander 1993 ...
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Factors Influencing Ore Recovery and Unplanned Dilution …
Konkola Copper Mine's Number 4 Shaft is a trackless underground mine applying sublevel open stoping (SLOS) mining method. Number 4 shaft wants to increase ore production from 1 million metric tonnes per annum to 3 million metric tonnes per annum in the next 5 years but ore recovery is 70% or less and dilution is 20% or more.
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Prediction, evaluation and optimization of China's copper …
The recovery efficiency of secondary copper in China showed a fluctuating upward trend during the study period, and increased significantly after 2008, reaching a peak of 56.3 % in 2014. ... Among them, the annual output of copper ore in the production subsystem ranges from 1.179 million to 3.504 million tons, and copper ore and refined …
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Bridging the copper supply gap
The analysis in this article was enabled by MineSpans, which is a proprietary McKinsey solution that provides mining operators and investors with robust cost curves, commodity supply and demand models, and detailed bottom-up models of individual mines.. For copper, MineSpans offers mine-level data on 390 primary copper mines and 170 …
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Treatment of secondary copper sulphides (chalcocite and …
The effect of silver concentration was tested on two different low-grade copper ores in the range between 10 and 500 mg Ag/kg for the lower K-ore and between 1.4 and 35.7 g Ag/kg Cu for the PVD ...
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New breakthrough copper recovery process developed
November 9, 2018. : The FL Rapid Oxidative Leaching technology is a more efficient and profitable alternative to smelting. In an effort to improve leach kinetics and recoveries of primary copper concentrates, minerals process solutions provider FL developed the Rapid Oxidative Leach (ROL) process – capable of attaining over 97% ...
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Precious metal recoveries in secondary copper …
The recovery of precious metals from the WEEE is currently performed in copper-making circuits including copper smelters, converters and secondary (black) copper smelters. Black copper smelting is …
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Biomining: Metal Recovery from Ores with …
oleaching with secondary copper ores. About 80 % of the bioleached copper originates from projects with secondary copper ores. In terms of the remaining 20 %, low-grade primary ore is increasingly bioleached via dump/stockpile leaching. Heap leaching of any copper ore has a recognized potential of expansion. 0 5 10 15 20 25 0 2000 4000 6000 ...
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v118n11a5 Relationship between ore mineralogy and …
A8<=;32:<>;8. Kansanshi is a copper and gold mine located in the Northwestern Province of Zambia, with an annual production in the region of 250 000 t of copper and 160 000 ounces of gold. Ore ...
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BASF and hydroGEOPHYSICS Consulting, partner to enhance secondary …
Ludwigshafen, Germany / Tucson, USA; February 6, 2024 – Global chemical company BASF and hydroGEOPHYSICS Inc. (HGI), a leading provider of geophysical services to the mining industry, have announced an exclusive partnership aimed at combining expertise in mineral processing, hydrometallurgy, and deep well injection. The …
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Selective complexation leaching of copper from copper …
Due to the inevitable inclusion of copper droplets in copper slag, the grade of copper in copper slag, with a high copper content of 0.3–1.5 wt%, is similar to that of exploitable copper ore. With the large amount of copper mining, high–grade copper ore is running out and copper slag has become an important secondary copper resource.
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Relationship between ore mineralogy and copper recovery …
Of the three flotation circuits, the sulphide circuit has the highest recovery (>90%) due to the simple copper mineralization, with approximately 90% of the copper occurring in chalcopyrite. In the mixed ore, chalcopyrite hosts approximately 35% of the copper in the feed, and in the oxide ore this proportion is normally less than 20%.
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Recovery of Sulfur, Copper, and Gold by Reprocessing …
et al. [18] concluded that the most efficient technology for copper recovery from the old flotation tailings of the Bor copper mine was leaching with biogenic lixiviant. Falagán et al. [16] achieved copper recoveries of over 90% by bioleaching. Bulatovic [20] found that bulk flotation is typically used in cases where the ore is acidic and
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Assessing metal recovery from low-grade copper ores …
Initially, selected experiments followed the growth of S. thermosulfidooxidans in the presence of both the high- and low-grade copper ores since these secondary sulphides (chalcocite and bornite) are readily bioleached (Acevedo et al., 1993).Indeed, copper extraction was close to and 80% with the high- and the low-grade copper ore, …
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Mesophilic inoculation enhances primary and secondary copper …
Moreover, a single mesophilic inoculation permanently alters the microbial dynamics, both in the leachate and the ore surface, generating a major and fast alteration of the primary copper sulfide minerals chalcopyrite (CuFeS 2) and bornite (Cu 5 FeS 4), as well as the transient formation of covellite (CuS), which was the unique secondary phase ...
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Improving flotation recovery of copper sulphides by …
This paper describes investigations to increase the flotation recovery of copper from ores containing both primary and secondary copper minerals. ... The feed to the pilot plant was taken from the mill product of a large flotation plant treating 90,000 tpd of copper ore. The use of a pilot plant with identical parallel circuits offered the best ...
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In situ leaching of copper: Challenges and future prospects
Average U.S. copper ore grades, for example, have dropped from 3.5% in 1900 to less than 0.7% today ... there is an interesting parallel between ISL and lixiviant injection as a secondary recovery method in heaps, which has recently been shown as a promising method for recovering copper from low-permeability areas in leach pads …
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