DOI: 10.1016/j.mineng.2021.107240 Corpus ID: 244185493; Flotation of calcite from apatite of a uranium-carbonate phosphate ore using carbon dioxide @article{Freitas2021FlotationOC, title={Flotation of calcite from apatite of a uranium-carbonate phosphate ore using carbon dioxide}, author={Amanda S. M. Freitas and …
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Introduction. Copper is one of Australia's top commodity exports, hosting the world's largest iron oxide‑copper‑gold (IOCG) deposits. However, uranium and its radioactive decay radionuclides are enriched in IOCG ores due to a strong association of uraninite (UO 2) with Cu Fe sulphides and iron oxide (hematite, Fe 2 O 3), which are …
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Uranium ore refers to naturally occurring rock or mineral deposits that contain a sufficient concentration of uranium, a radioactive element, to make its extraction economically viable. Uranium is a relatively rare element and is typically found in trace amounts in the Earth's crust. Uranium ore is typically mined and processed to extract …
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The copper ores, waste from the copper industry, phosphate rocks and phosphogypsum were considered as sources of uranium in these studies. Apart from uranium, these materials also contain other ...
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Flotation kinetic behavior of two deposits including an elevated-pyritic (Cu/S=0.21) complex copper sulfide ore and a high-grade carbonaceous sedimentary apatite (P2O5>25%) ore were investigated.
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The growing demand of copper metal in the world continues to push the limit of utilization of complex copper resources, among which the iron oxide associated with copper–gold-uranium ore ...
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to concentrate ores for economical smelting. Flotation is a selective process and can be used to achieve separation from complex ores such as lead-zinc, copper- zinc etc. Initially developed to treat the sulphides of copper, lead, and zinc, the field of flotation has now expanded to include oxides, such as hematite and cassiterite,
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were identified in the ore mineralogy to trigger any other flotation mechanisms of uranium. Entrainment appeared significant particularly in soft and lower grade ores. . (Abstract) Keywords- Copper ores, process mineralogy, uranium, flotation 1. INTRODUCTION Uranium in nature occurs as oxides and oxysalts defining their
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A specific cobalt flotation circuit is run at KCM's Nchanga concentrator. The ore from the Nchanga open pit contains pockets of ore with higher grades of cobalt, typically about 0.3% cobalt and 1.3% copper. This ore is processed in campaigns through the cobalt flotation circuit, which is illustrated schematically in Fig. 11. The concentrate ...
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Flotation of Copper–Gold Ores. For the bulk flotation of copper minerals and gold from supergene copper ores, it is normal practice to add a xanthate as the primary collector and dithiophosphate as a secondary collector (Bulatovic, 1997). This combination gives satisfactory results in respect of copper concentrate grade and …
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Flotation of an Oxidized Copper Sulfide Ore Ahmed A. Seifelnasr1, Ghorashi Z. Zain2, ... about 2% Cu with little gold and uranium values (Ahmed, 1998; Afia and Widatalla, 1961). This copper ...
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A great amount of work has been published and further research is continuously being undertaken to improve recovery and grade of gold in copper flotation circuits (Agorhom, 2014, Allan and Woodcock, 2001).Furthermore, naturally occurring …
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Abstract In the flotation of Zn-Pb ores, sphalerite is floated following activation with copper sulfate. In this type of sulfide ore, pyrite is commonly treated as a gangue and poor selectivity … Expand
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The dosage of a collector is an important factor that determines the efficiency of a froth flotation process. The representative sample of the carbonatitic Palabora copper ore ground 45 % passing 75 µm was froth-floated with sodium isobutyl xanthate (SIBX) collector at 60, 70, 80, 90 and 100 g/t dosages. The concentrates and tails were dried …
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Figure 1 is a generalized diagram of a conventional copper flotation plant from the point where ore first enters the circuit to the production of concentrate and tailings. To prepare ore for the flotation process, run-of-mine ore, which may contain from about 2 to 5 percent water, by weight, when mined, is
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flotation tests, in order to determine the effectiveness of the resin-flotation procedure on such ores. To obtain a broad coverage of the field of application, three different metal-bearing ores were investigated: (1) a basemetal ore, - such as an oxide-copper ore containing quartz-sericite schist and granite as primary gangue constituents; (2 ...
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The Uranium ore treatment plant at Jaduguda, India, recovers copper, nickel and molybdenum as byproducts before the bulk flotation tailings are subjected to leaching to recover uranium values.
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This can be ascribed to the intrinsic association with copper bearing sulphides (poor liberation). No naturally hydrophobic minerals such as talc, kerogen, etc were identified …
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copper ore and flotation reagents on the process of its processing [2-9], and the features of the flotation agent fixing mechanism on the mineral surface [10-13]. The purpose of this work is to study the flotation behavior of sulfide copper ore using sodium diisopropyldithiophosphate as a collector, to study the structure and composition of the ore
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Olympic Dam hosts >80 million tonnes of copper, as copper‑iron sulphides, within hematite-dominant gangue. Processing of the relatively fine-grained copper ore …
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Flotation is widely used to concentrate copper, lead, and zinc minerals, which commonly accompany one another in their ores. Many complex ore mixtures formerly of little value have become major sources of certain metals by means of the flotation process. This article was most recently revised and updated by
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The dosage of a collector is an important factor that determines the efficiency of a froth flotation process. The representative sample of the carbonatitic Palabora copper ore ground 45 % passing ...
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Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only assays are available, the ratio of concentration equals (20 – 0.1)/(2.09 – 0.1) = 10 ...
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Bench-scale flotation tests were done with a chalcopyrite, sphalerite and pyrite-containing ore from Timmins, Canada using p-nonylcupferron as collector. Effects of pH and the need for adding copper sulphate for zinc activation and lime as pyrite-depressant were studied. The collector floated nearly 94% copper and 94% zinc without …
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Hydroxamic collectors are considered as promising collectors of sulfide and mixed ores of non-ferrous metals, both independently and jointly with xanthate [14–16].The efficiency of using hydrazides of 2-ethylhexanoic and n-pentanoic acids for flotation of copper-nickel ores is shown [17, 18].It is assumed that the presence of hydrazides of …
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Optimisation of gold recovery by selective gold flotation for copper-gold-pyrite ores. ... gold and uranium contained in the Witatersrand Type ores and their practical exploitation; ... Challenges and opportunities in the recovery/rejection of trace elements in copper flotation-a review. Minerals Engineering, Volume 78, 2015, pp. 45-57.
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DOI: 10.1016/S0892-6875(97)00072-1 Corpus ID: 93155247; Flotation behaviour of gold during processing of porphyry copper-gold ores and refractory gold-bearing sulphides @article{Bulatovic1997FlotationBO, title={Flotation behaviour of gold during processing of porphyry copper-gold ores and refractory gold-bearing sulphides}, author={Srdjan M. …
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About 150 flotation tests were done on Elliot Lake ore with 15 reagents as collectors in order to screen and choose an attractive collector for uranium flotation. Several variables were studied including pH, conditioning time and mode of collector addition. The tests were done in a Denver or Agitair subacration cell. The particle size of the ore was kept at 85% …
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Differential and bulk flotation of mixed sulphide-oxidised Cu–Co ores. Copper complex ores contain profitable amounts of more than one valuable mineral. They are extensively mined in the Zambian Copperbelt. They belong to the more complex Cu deposits in which sulphides occur in a mixture with oxide minerals.
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The goal of the present work was to develop hydrometallurgical approaches based on acid leaching for selective extraction of base metals and gold from the sample of old flotation …
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The Uranium ore treatment plant at Jaduguda, India, recovers copper, nickel and molybdenum as byproducts before the bulk flotation tailings are subjected to leaching to recover uranium values.
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