آخرین محصولات
Copper recovery from copper slags through flotation
In this study, a facile process for recovering copper from copper slags through flotation enhanced by sodium carbonate synergistic mechanical activation has been developed. On the one hand, sodium carbonate, as a pH regulator for copper slag …
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(PDF) 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 ...
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(PDF) Flotation of an Oxidized Copper Sulfide Ore
From a flotation feed assaying 2.7% Cu, a copper concentrate assaying about 23.5% Cu at a recovery of 91.5% was obtained in only one roughing and one cleaning stages. EFFECT OF THE SDDIUM...
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Flotation and Tailing Discarding of Copper Cobalt Sulfide Ores
The sulfide mineral aggregate obtained after primary grinding was selected as the recovery object, and its mineralogical characteristics, such as liberation degree and particle size, were investigated to promote total recovery in primary flotation. The copper–cobalt sulfide concentration was obtained at the following optimal conditions: …
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(PDF) Flotation and Tailing Discarding of Copper Cobalt Sulfide …
The mineral composition of copper–cobalt ores is more complex than that of copper sulfides, and it is also difficult to discard tailing efficiently in primary flotation for the fine-grained ...
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Minerals | Free Full-Text | Bioleaching Process for …
Flotation wastes are becoming a valuable secondary raw material and source of many metals and semimetals worldwide with the possibilities of industrial recycling. The flotation tailings contain oxide …
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(PDF) The Challenges and Prospects of Recovering Fine …
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...
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Chemical Composition Data of the Main Stages of Copper
The flotation technique allows concentration of copper sulfide minerals by exploiting differences in their surface properties, by adding chemical reagents able to make copper sulfide minerals hydrophobic [68,69]. Then, air is injected at the bottom of the flotation cell to promote the migration of hydrophobic copper sulfide minerals to the …
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Comparison of copper oxide and copper sulfide recovery of each
The results indicated that about 9.46% of the recovery of oxide copper increased using 300g/t ammonium sulphide in the first step, and reached to 77.12%. Also, in this case, the recovery of ...
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Mineralogical characterization of copper sulfide tailings using
copper is extracted from sulfide ores, particularly as chal-copyrite [1–3]. The copper in sulfide ores can be economic-ally separated from gangue by froth flotation, which is a sep-aration process based on the physicochemical properties of the mineral surface [4–5]. Thus far, flotation has been the preferred method for recovering copper ...
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A Review of the Flotation of Copper Minerals
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 mines) is of great commercial importance.
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Feasibility Study of Differential Flotation of Cu–Pb–Zn Minerals …
The effect of pH variation on copper recovery in the bulk flotation process of the sulfide minerals is shown in Fig. 4. As seen in this figure, with increasing the pH from 7 to 10, copper recovery increases. In this test, potassium amyl xanthate has been used as collector and sodium silicate has been used as dispersant.
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Review of the Flotation of Copper Minerals
plant operator. Oxidic ore can be concentrated using flotation or, if it has a low acid demand, it may be 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 mines) is of great commercial importance.
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Mineralogical characterization of copper sulfide tailings using
As ore grades constantly decline, more copper tailings, which still contain a considerable amount of unrecovered copper, are expected to be produced as a byproduct of froth flotation. This research reveals the occurrence mechanism of copper minerals in typical copper sulfide tailings using quantitative mineral liberation analysis (MLA) …
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A New Technique for Recovering Copper From Complex Copper …
Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using …
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Oxidation-reduction effects in the flotation of copper sulfide …
The flotation of copper bearing minerals is always a hot topic in the field of minerals processing. In this paper, the adsorption of a flotation collector, 2-mercaptobenzothiazole(MBT), onto a typical secondary copper sulfide mineral, chalcocite, depending on electrochemical potential was investigated with the help of shell-isolated …
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Research on the Process of Sulphatizing Roasting of Copper Slag
This process resulted in solubilization of 81.6% copper and 37.7% zinc with the relatively low iron recovery of 26.2%. Metal content in the leach residue was 0.13% Cu and 3.69% Zn. View
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Four Flotation Methods for Copper-Nickel Sulfide Beneficiation
There are two kinds of copper-nickel sulfide mixed flotation: one is a mixed flotation-direct separation process, the other is a mixed flotation-smelting-high nickel separation process. 1.Mixed ...
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A New Technique for Recovering Copper From Complex …
At present, the treatment methods for copper oxide ore mainly include flotation, 5, 6 leaching 7, 8 and flotation and metallurgical processes. 9 The flotation …
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Molybdenite flotation from copper/molybdenum concentrates …
copper sulfide minerals and the selective flotation of molybdenite from copper/molybdenum concentrates. The results of this research program were quite successful, and the University of Utah is now seeking patent protection for this flotation technology (Miller, Ye, and Jang, 1990). The utilization of ozone in the flotation of …
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Treatment of Mixed Sulfide Oxide Ores of Copper
Many of our largest copper deposits contain both sulfide and oxidized copper minerals. The large porphyry mines, with a total copper content of from 1.3 to 2.0 per cent., send to their mills ore with an …
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Copper Sulfide
All copper sulfides require the presence of Fe 3+ and O 2 as oxidizing agents for leaching to occur. The copper sulfide is oxidized by Fe 3+.The resulting Fe 2+ is reoxidized to Fe 3+ by O 2.The Fe(II)/Fe(III) redox couple acts in a catalytic manner in these reactions (shown for elevated-temperature reaction conditions where the sulfur-containing product is …
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Flotation method for copper-nickel sulfide ore
The invention discloses a flotation method of copper-nickel sulfide ore, which comprises the following steps: a. grinding and pulp mixing copper-nickel sulfide ore to obtain ore pulp; b. adding a sulfide mineral modifier into the ore pulp in the step a, wherein the sulfide mineral modifier comprises 1-10 parts by weight of soluble copper salt, 0-200 parts by …
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(PDF) Froth flotation process and its application
The paper is about the froth flotation process and its application. It is a metallurgical process for the extraction of metals in a pure state from their ores: especially for sulfide ores. Froth ...
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Flotation of Gold and Gold-Bearing Ores
A bulk flotation process using sulfydryl collectors was found to be beneficial in treating a complex ore containing gold-bearing enargite (Curreli et al., 2005). An industry survey of flotation reagents used on 20 flotation plants treating gold-bearing copper sulfide ores was undertaken in 2012 (Kappes et al., 2013). Thiophosphate-based ...
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Flotation of copper oxide minerals: A review
1. Introduction. The continuous development of the global economy has resulted in a high demand for copper production and high copper consumption [1], [2], and exploitation and effective use of copper oxide mineral resources have attracted attention [3].Copper oxide deposits evolve from shallow copper sulfide deposits after long-term …
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Sulphide Flotation
Fig. 2.42B represents the galvanic corrosion behavior between two kinds of sulfide minerals in the flotation process: sulfide minerals with lower electrostatic potential work as the anode undergoing the oxidation reaction, ... Gold chloride can be precipitated using a synthetic covellite produced in residual copper recovery process.
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Full article: The Direct Leaching of Nickel Sulfide Flotation
Interestingly, another patent was filed by Outotec Oyj in the same year for a chloride leach process for treatment of nickel sulfide ore and concentrates, key differences in this process were the absence of a non-oxidative leaching step, copper(II) was precipitated from the leach liquor as atacamite (Cu 2 (OH) 3 Cl) which was returned to …
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Estimation and Improvement of Recovery of Low Grade Copper …
Copper oxide ore is an important copper ore resource. For a certain copper oxide ore in Yunnan, China, experiments have been conducted on the grinding fineness, collector dosage, sodium sulfide dosage, inhibitor dosage, and activator dosage. The results showed that, by controlling the above conditions, better sulfide flotation indices …
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How to Process Copper Ore: Beneficiation Methods and Equipment
Before the beneficiation of copper ores, crushing and grinding are required. The bulk ores are crushed to about 12cm by a jaw crusher or a cone crusher. Then the crushed materials are sent to the grinding equipment, and the final particle size of the copper ore is reduced to 0.15-0.2mm. Copper ore crushing process. 1.
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محصولات مرتبط
- تصاویری از مواد معدنی زمین
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