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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 …
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After copper recovery by flotation, the remaining part of the slag is considered waste and disposed of in the slag dump area. However, even after copper recovery, copper slag flotation tailings (CSFT) may still contain several metals in varying amounts. However, the complexity and low metal concentration have undermined the …
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This work aimed to investigate optimal leaching technology for copper extraction from old flotation tailings of the Copper Mine Bor. The leaching degree of copper after leaching with sulphuric acid at 80 °C was 50%, the maximal leaching degree was achieved after 30 minutes. Then, old flotation tailings were leached with adapted moderately ...
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The presence of fine and ultra-fine gangue minerals in flotation plants can contribute to sub-optimal valuable ore recovery and incomplete water recycling from thickeners, with the performance of the …
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Froth flotation is a physicoc hemical process that has been. A. Bahrami et al., Process mineralogy as a key factor affecting the flotation kinetics of copper sulfide minerals 431. used for more ...
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• Install a HydroFloatTM circuit to treat the full flotation tailings stream from Train 3 (T3) of the Concentrator 1 flotation circuit (~9Mtpa) • Primary objective to recover gold and …
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Based on the results, shown in Figure 4, the optimal ratio of S:L for the copper leaching process from. flotation tailings is 1:2.5. The highe st degree of copper leaching of 56% was achieve d in ...
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It focuses on the determination of the reagents' dosage that enables obtaining the highest recovery of copper (44.80%) and cobalt (88.30%) through flotation of the studied tailings.
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Samples of copper tailings were collected from the overflow and underflow streams of the primary hydrocyclone at the processing plant discussed in Section 2.1.The d90s of these samples were 63.7 μ m and 279 μ m respectively and the particle size distributions of each can be found in Fig. 1.The samples were obtained as slurry, which …
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The total copper recovered from its ore through flotation process is about 56% [6,18], which indicates that the flotation tailings still contain valuable copper components such as chalcopyrite. In addition, old flotation tailings sometimes have a higher copper grade (0.2–0.4%) than that of low‒grade ores (0.2‒0.3%).
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The subsequent ferric leaching of copper converter slag flotation tailings containing 0.53% copper and 2.77% zinc with the pregnant leach solution was conducted.
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Some researchers studied the extraction of metals from flotation tailings of copper slag by sulphuric acid leaching in the presence of oxidants such as H 2 O 2 and Fe(III) (Carranza et al., 2009; ...
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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 as ...
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These results show that froth flotation, carried out with the appropriate reagents, is a successful method for recovering Co by enriching the flotation plant tailings.
DetailsThe flotation tailings pond of the Bor Copper Mine poses a great ecological problem not only for the town of Bor but also for the surrounding soils and watercourses. Since the old flotation tailings contain about 0.2% of copper on the average, we investigated their leaching with sulphuric acid in the absence and presence of an oxidant.
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able metals such as cobalt from tailings can help con-serve resources and meet the demand for metals. The aim of this study is to investigate the enrichment conditions of cobalt by the flotation method using samples taken from the Küre flotation plant tailings dam. 2 Experimental 2.1 Maerialt The sample used in the flotation experiments was
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economic to acid heap leach the stockpile. The recovery of these copper minerals by flotation or. hydrometallurgy from ores, typically containing 0.5%TCu (open pit mines) and 1-2%TCu (underground ...
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Use of Copper Slag as Concrete Sand. Ravindra K. Dhir OBE, ... Chao Qun Lye, in Sustainable Construction Materials: Copper Slag, 2017. 4.10 Copper Tailings. Copper tailings are beginning to draw attention for their possible use as a sand component in concrete. A series of laboratory tests undertaken by Thomas et al. (2013), using up to …
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Copper tailings are either stored in the dam and/or backfilled. The volume of backfilled materials depends on the mine site's configuration and site information (Section 2.3.2). Backfills also require additional materials and energy consumption, such as cement binder, slags, diesel, and electricity in the operational phase. In the year 2050, it ...
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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 type, dose, suspension pH, and mixing circumstances affect flocculation. See more
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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 …
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Introduction. Mining and processing of copper ores extensively alter the environment, and the main difficulty is a huge amount of flotation tailings which comprise even 96% of the mass of run-of-mine ores with worldwide production estimated to be two billion tons in 2011 (Gordon 2002; Onuaguluchi and Eren 2012).These tailings pose an enormous problem …
DetailsThe present research aims at identifying exploitable routes for recovering metals retained in the tailings from the flotation of Cu and Co ores (oxidized and …
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copper sulfide and free oxidation copper in the raw ore were recycled by flotation, but the other refractory copper oxides, mainly the combination copper oxide, were not thoroughly recycled and the majority were lost in the tailings. As is typical for flotation tailings containing silicate gangue minerals, high temperature leaching was used [12].
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The results obtained both at laboratory and industrial scale showed that it is possible to produce concentrates with a pyrite grade over 90% and recoveries over 70% in a flotation circuit that ...
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A mixture of deionized water and dry copper flotation. tailings was prepared in a 1:5 up to 1:1 mass ratio, such as. 2 ml up to 10 ml of deionized water and 10 g of dry copper. flotation tailings ...
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In this paper, the ferric leaching of slag flotation tailings is studied. Copper extractions of 66% are achieved by ferric leaching, and Cu content in tailings is reduced from 0.78% to 0.24%.
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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. Copper extractions of 66% are achieved by ferric leaching, and Cu content in tailings is reduced from 0.78% to 0.24%. 1.
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This study investigated the floccula-tion performances of a new generation UMA (Unique Molecular Architecture) technology polymer and conventional polymers in …
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Ultrasound has been used to enhance flotation recovery of copper tailings. •. A batch flotation cell with ultrasound transducers has been constructed. •. The ultrasound field inside the cell was measured. •. Laboratory experiments show that ultrasound treatment improves Cu recovery in 3.5%.
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tailings of copper ore flotation from OEP. They were installed at three heights in relation to the axis of the pipeline, i.e. above the axis, in the axis and below the axis.
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A hypothetical optimisation solution assessment showed that SA provides the best set of solutions for the maximisation of rougher copper recovery, obtaining a throughput of 638.02 t/h and a total net gain percentage of 14%–15.5% over the other optimisation algorithms with. a maximum copper recovery of 94.76%.
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Copper and silver were extracted both from mineral residues and fresh mineral tailings by mixing 0.5 g of representative samples with 10 mL of a solution containing 3.42 M NaCl and 0.2 M HCl ( Romero et al., 2003 ), and heating for 1 h at 90 °C. 2.4. Sulfidogenic bioreactors and selective recovery of copper from PLS.
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The feasibility of using standard flotation techniques for the desulfurisation of typical porphyry-type copper sulfide tailings is demonstrated through the manipulation of collector dosage to reduce the tailings fraction which is acid consuming to 9 wt.% of the total tailings, and the sulfur content in the benign tailings fraction to 0.2%.
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