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The process addressed the leaching of magnetic separation concentrates at 80°C and using 90 kg/t acid leaching and at 40°C and using 45 kg/t acid leaching for magnetic …
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The traditional method applied for the flotation of copper oxide or mixed ores is sulphidisation, which was first developed with industrial success on Pb–Zn oxide ores in Australia (Crozier, …
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Assuming that oxides are only recovered during the oxide flotation stage, Cu-oxide minerals recovery can be estimated at around 52%. That constitutes an increase of more than 20% compared to the ...
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In this research, flotation of copper, lead and zinc minerals from a copper oxide–sulfide ore was studied. The identification tests showed that the sample is a mixture of quartz, chalcopyrite, galena, cerussite, hemimorphite and iron oxide minerals with 5.04% CuO, 1.61% PbO, 2.07% ZnO and 56.40% SiO2. The experimental design methodology (RSM) was …
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The aim of this study was the recovery of copper from the oxide copper ore by froth flotation and agitating sulphuric acid (H2SO4) leaching. The ore with 4.21% copper grade used in this study was ...
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If the idea is try to recover, by flotation, copper oxides that are located in the upper part of the deposit. According to geology department the main copper oxide minerals are …
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The purpose of the present work is to demonstrate the potential of a combination of EDTA and SDS for efficient recovery of fine copper oxide from silica by flotation. In particular, the significance of hydrophobic particle aggregation enhanced by gas nucleation in improving flotation recovery of fine CuO particles was discussed.
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In this paper, we have reviewed the surface properties of common copper oxide minerals and summarized application of direct flotation, sulfidization flotation, and activation flotation in recovery of copper oxide minerals.
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The traditional method applied for the flotation of copper oxide or mixed ores is sulphidisation, which was first developed with industrial success on Pb–Zn oxide ores in Australia (Crozier, 1991). The ... Plant recovery compared with laboratory recovery for acid-soluble copper minerals. 73 In this paper, we review the subsequent circuit ...
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TECHNICAL ARTICLE A New Technique for Recovering Copper From Complex Copper Oxide Ore by Flotation and Metallurgical Processing XU BAI,1,2 SHU-MING WEN,1,2,4 QI-CHENG FENG,1,2,5 JIAN LIU,1,2 YI-LIN LIN,2 and ZHI-HUA YAO3 1.—State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming
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The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...
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A crude display of how oxide content (copper) affects the overall recovery of any given ores. Below are flotation recovery responses of 5 different ores from North and South America. In all cases, the recovery VS %Oxide relationship is obvious. Samples vary from 0.4% to 1.6% total copper. The heavy oxide chart (4th one down) being the 1.6% Copper.
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Flotation of sulphidic and oxidic copper minerals is reviewed, with particular reference to previous studies of refractory copper ore flotation. Keywords: Flotation; recovery; refractory. 1. Introduction . Froth flotation is defined as a physico-chemical process which exploits the …
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The copper oxide grade is an important factor in the flotation of copper oxide minerals. A high copper oxide grade (F5) should result in a higher recovery and a higher grade of copper …
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Significant differences in the recovery rates of copper and cobalt were observed. Copper recovery varied between 70% and 83%, while cobalt recovery ranged from 38% to …
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Tangdan copper oxide ore deposit, located in the northeast Yunnan province of China, is the largest independent copper oxide deposit in China. The ore from the deposit is characterized by low grade, high oxidation ratio and fine-grained dissemination, which results in the poor flotation recovery. The analysis of plant flotation data reveals that the loss of copper minerals into …
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d to flotation to recover the copper sulphide minerals (chalcopyrite, bornite, chalcocite, covellite). The Oxide float tails and a large proportion of the Mixed float tails are then treated by …
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This study aims to investigate the best route to increase the recovery of oxide-sulfide copper ore. Among various methods, using nanoparticles is more desirable because of their high efficiency. So, ZnO nanoparticles were synthesized and surface modified via anionic sodium dodecyl sulfate (SDS) surfactants. The results showed a recovery increased increase …
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A combined process of flotation and high-gradient magnetic separation was proposed to utilize Yulong complex copper oxide ore. The effects of particle size, activators, Na2S dosage, LA (a mixture of ammonium sulfate and ethylenediamine) dosage, activating time, collectors, COC (a combination collector of modified hydroxyl oxime acid and xanthate) …
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However, the recovery effect of copper oxide components is poor, resulting in the waste of a large amount of copper resources. The sulfidization-xanthate method has exhibited some efficacy in recovering CS, due to its high economic value. ... Enhancing the flotation recovery of copper minerals in smelter slags from Namibia prior to disposal ...
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copper oxide ore on the results of flotation performance is a key issue that has not been taken into consideration. Among the mentioned studies, Chen et al. (2017) are just focused on this issue ...
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flotation tests were unsuccessful in terms of both recovery and grade of concentrate product. The highest copper recovery of concentrate was found as 61.35% with
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Copper Recovery from Yulong Complex Copper Oxide Ore by Flotation and Magnetic Separation JUNWEI HAN,1,3 JUN XIAO,2,4 WENQING QIN,1 DAIXIONG CHEN,2 and WEI LIU1,5 1.—School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China. 2.—Hunan Provincial Key Laboratory for Complex Copper Lead Zinc Associated
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Improving flotation recovery of copper sulphides by nitrogen gas and sulphidisation conditioning. Miner. Eng. (2000) ... In this study, a novel copper oxide flotation collector, p-methylphenylethyl amide oxime (PEBH), was synthesized via the nitrile–hydroxylamine method, and the flotation behavior of cuprite and calcite under this collector ...
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The preferred method for the flotation of oxide and mixed copper ores is sulphidisation. The reagents are typically sodium sulphide (Na 2 S) and sodium hydrosulphide (NaHS). Slug sulphidisation, which uses a single slug dose, is generally not preferred because the difficulty in controlling the pulp potential leads to poor mineral recoveries from either under …
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For instance, the fine-grained copper oxide ore is poorly floatable and displays a lower recovery during the flotation process [7]. Up to now, sulfide flotation is still one of the most widely used processes in copper oxide ore dressing, but it is unable to solve the problem of low recovery of micro-fine oxidized copper ores [8,9 ...
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An effective way to realize efficient flotation of copper oxide minerals is to increase active sites on the surface of copper oxide minerals to enhance the interaction of collector with the mineral surface. Besides, various perspectives for further investigation on the efficient recovery of copper oxide minerals are proposed.
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The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used conventional methodologies does not allow the interactional effects of critical parameters in the flotation processes to be investigated, which is mostly overlooked in …
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RECOVERY OF COPPER FROM OXIDE COPPER ORE BY FLOTATION AND LEACHING Kiraz, Emirhan M.S., Department of Mining Engineering Supervisor: Prof. Dr. Mustafa Ümit …
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Where oxide and 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 ...
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