Process mineralogy as a key factor affecting the flotation
The aim of this study is to apply process mineralogy as a practical tool for further understanding and predicting the flotation kinetics of the copper sulfide minerals. The minerals' composition and association, grain distribution, and liberation within the ore samples were analyzed in the feed, concentrate, and the tailings of the flotation …
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(PDF) Optimization of the flotation of copper smelter slags …
Laboratory batch flotation tests were done on the sulphide composite with PAX as a collector and on the oxide composite using AM28 as collector. A third test was done on the ore blend using both AM28 and PAX collectors. Results are shown in Figure 2.8. Figure 2.8 Flotation response for copper sulphide composite using PAX as the copper collector.
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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 …
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Mineral Processing Abstracts
Mining and processing of complex copper sulphide ores, that are low grade, highly disseminated and contain troublesome gangue minerals such as clays, is becoming more common. Clays are fine to ultra-fine phyllosilicate particles which have a deleterious impact on the flotation of copper sulphide ores. The
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Flotation of mixed copper oxide and sulphide minerals with …
Addition of PAX was used to float the sulphide copper and AM28 to float oxide copper at the same time. The pH of the pulp for flotation was the natural pH of the ground ore, at approximately pH 8.1. The conditioning and flotation times to collect each concentrate were the same as used in the sulphide batch flotation tests.
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Laboratory testing for sulfide flotation process development
A carefully planned laboratory test program is the foundation for the successful development of a sulfide flotation process. In this paper, the development of a copper-molybdenum flotation process is described. However, the concepts discussed can be applied to most sulfide flotation systems and to many industrial minerals projects as …
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Parametric Optimization in Rougher Flotation …
Parametric Optimization in Rougher Flotation Performance of a Sulfidized Mixed Copper Ore. Ahmad Hassanzadeh. 2020, Minerals. The dominant challenge of current copper beneficiation plants is the low recoverability …
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Statistical investigation of flotation parameters for copper …
In this work, the two-level factorial experimental design method was implemented to examine which factors had the greatest influence on copper recovery …
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v116n6a11 Review, evolution, and optimization of the …
Hundreds of laboratory flotation tests were also simulta-neously conducted on flotation feed and final tails, under various plant conditions, in order to compare the performance of the plant with the ideal conditions in the laboratory. The salient points from these studies were as follows. During the sulphide pre-flotation (roughers), recoveries
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Flotation of mixed copper oxide and sulphide minerals …
At a blend of 70% sulphide ore and 30% oxide ore, the rougher scavenger copper recovery was as high as 95.5%. The copper recovery from the blended ore using a mixture of collectors was shown
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Flotation of Nickel-Copper Sulphide Ore: …
the flotation recovery of Ni, Cu and Co from a nickel-copper sulphide ore. The effect on flotation performance of various parameters such as pH, collector dosage, % solids and depressant dosage at different levels was investigated. Therefore, the main objective of the study was to optimize the process parameters for the flotation of base metals ...
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Copper recovery from copper slags through flotation
The ores are concentrated through froth flotation in the form of copper-sulfide or copper-iron-sulfide minerals (e.g. chalcopyrite, chalcocite and etc.), which are then melted in a high-temperature reheating furnace (± 1250 ℃). ... The results of the above flotation tests show the superiority of grinding with Na 2 CO 3 compared to those ...
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Sulfide Flotation
2.6.1 Introduction. Sulfide ore flotation is a complex electrochemical system. Electron transfer not only occurs between the sulfide minerals and flotation reagent molecules, but it also happens among different sulfide minerals. Many sulfide minerals are narrow band gap semiconductors.
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(PDF) Process mineralogy as a key factor affecting …
The major copper-bearing minerals identified by microscopic analysis of the concentrate samples included chalcopyrite (56.2wt%), chalcocite (29.1wt%), covellite (6.4wt%), and bornite (4.7wt%)....
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Chemometric Optimisation of a Copper Sulphide …
In most copper sulphide mining operations, where water recovery needs to be optimised, maximising particle settling rate is often an operational priority. However, in some cases, low solid content or …
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An innovative flotation technology for the lime …
beneficiation of similar copper sulfide ore. 2. Materials and methods 2.1. Materials and reagents The feed sample was obtained from the Dapingzhang copper sulfide mine of Yunnan Province in China. X-ray diffraction (XRD) analysis was applied to determine the principal mineral components in the raw ore samples and the results were shown in Fig. 1.
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Estimation and Improvement of Recovery of Low Grade …
The test was conducted mainly to improve the recovery of flotation concentrate. A prediction optimization model of copper oxide flotation concentrate, which was based on ... it can be said that the sulfide flotation method can be used to effectively recycle copper mineral resources. 20 30 40 50 60 70 80 0 500
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Copper Gold Sulfide Ore
Copper content was not given. In the selective flotation test (2), the concentration contained 3.02 ounces gold and 6.00 ounces silver per ton and 17.00 percent copper in 9.1 percent of the original weight of ore. The reagents need were in pounds per ton of ore: lime, 8.0, and sodium cyanide, 0.6, ground with the ore; and potassium ethyl ...
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Flotation of mixed oxide sulphide copper-cobalt …
sulphide cobalt-bearing copper minerals occur together, efficient recovery of copper and cobalt is known to be extremely difficult. This study investigates the flotation behaviour of a mixed oxide-sulphide ore where copper is hosted in sulphides phases such as bornite, chalcopyrite and chalcocite, and oxide phases such as malachite and
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Selective Flotation
Optimization of grade and recovery is the final objective. No need to recover lots of something if it is off-specs and can not be sold. Flotation Selectivity Charts Compares Flotation Mass Pull VS Grade Recovery Test Results. By reviewing a material balance table below where low mass Test 8 is compared to higher mass Test 2.
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Sulfide Mineral Bioflotation Optimization and Prediction by …
In the single-mineral flotation tests, it was observed that in the presence of mesophilic bacteria, pyrite (with a recovery of 21.1%) and galena (with a recovery of 46.3%) were significantly depressed under optimal conditions compared to other minerals. ... Sulfide Mineral Bioflotation Optimization and Prediction by Mixed Mesophilic Bacteria …
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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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(PDF) The Evaluation of a Copper Flotation Plant …
Optimization of reagent dosages for copper flotation using statistical technique. 2010 • ... oxidized ore complex ore sulphide ore flotation feed Fig. 5. ... (d80= +312 µm and d80= -312 µm) were prepared and used in …
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Flotation Reagents
Strong promoter for gold and silver, copper and zinc sulphide ores. Very little tendency to float pyrite in alkaline pulps. Aerofloat 241 Neutralized aerofloat 25. Greenish black liquid. 5-10% solution .05 to .15 Fast acting aerofloat promoter-frother for silver bearing lead ores, also copper and zinc sulphide. Aerofloat 242
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Optimization and mechanism of gold-bearing sulfide flotation
3.3 Closed-circuit flotation tests. According to the above flotation condition test about activator and collector for gold-bearing sulfide, a reasonable flotation process was designed. The ideal flotation indexes are obtained through closed-circuit test as shown in Fig. 4. The closed-circuit flotation indexes are shown in Table 2.
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copper sulphide flotation optimization tests
copper sulphide flotation optimization tests. A laboratory flotation test on a copper sulphide ore gave the following results 1. Calculate the concentration Ct remaining in the 3 L cell after time t. 2. Determine the rate constant. 3. If a bank of continuous cells has the same rate constant how many cells would be required to achieve a.
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Optimization of reagent dosages for copper flotation using statistical
Key words: copper sulphide ores; flotation reagents; modelling; optimization 1 Introduction Froth flotation is a process used for selectively separating hydrophobic materials from hydrophilic. Various factors, such as the type and quantity of chemicals added[1 2], the bubble size[3], stator and rotor configuration[4] and residence …
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Evaluation of the possibility of copper recovery from tailings …
Commissioning and optimization of the flotation process was performed over 50 weeks ... The industrial flotation tests were sampled and analyzed over a period of 56 weeks (from Nov. 2015 to Jan. 2017). ... Evaluation of the replacement of NaCN with depressant mixtures in the separation of copper–molybdenum sulphide ore by …
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Adsorption and flotation of copper sulfide ore with
Flotation tests. Flotation tests for sulfide copper ore were conducted by using a laboratory FML-1 (237 AK) flotation machine with cell (volume of 0.5 L). 100 grams of a copper ore were firstly mixed with 0.5 L distillate water in the flotation cell for 1 min with an impeller speed of 2000 rpm/min. The sodium hydroxide (1 M) or
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Optimization of reagent dosages for copper flotation using …
The aim of the present work is to use statistical techniques to optimize the dosages of four flotation reagents, the collectors of Z11 (isopropyl xanthate sodium), …
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