leaching of roasted copper sulfide ore
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leaching of roasted copper sulfide ore

(PDF) LEACHING OF A ROASTED COPPER SULFIDE

LEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P. Castillano, Wilfredo T. Gatdula Jr., Gin Derick L. Magno, Jhunalyn H. Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition.

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LEACHING-OF-A-ROASTED-COPPER-SULFIDE

2016-9-28  Leaching of a Roasted Copper Sulfide Ore. Submitted to Engr. Alma Mae Batucan, Instructor. Page 1 of 2 clear solution. A solution consisting of 6 % sulfuric acid added with roasted calcine and water in a 1000 mL beaker was then prepared for leaching. The leaching process was done by stirring for one hour and the resulting solution was filtered.

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Effect of Roasting Temperature for Copper Leaching of ...

2018-12-6  The roasted cake was leached at the ratio S/L was 1/9, the leaching temperature was 25˚C, the sulfuric acid concentration was 60 g/l, the rotation speed was 450 r/min, and the leaching time was 4 h in all experiments. The effect of roasting temperature and time is shown in Figure 3. At 400˚C, the not high recovery of 66.3% is observed at 2 h.

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Optimization of sulfuric acid leaching of roasted ...

2020-8-26  Roasting is the key unit operation in converting low solubility sulfide ores into high solubility oxides. During roasting, chalcopyrite reacts with air and decomposes to generate copper sulfate, sulfur dioxide, sulfur, copper-iron oxides, copper-oxy sulfate, and copper

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What is the best method for sulfide copper leaching?

A low grade sulphide ore leaching could be contemplated using an oxidative / bacterial heap leach. Another option is to concentrate the sulphides using flotation, then atmospheric or

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Recovery of Copper from Copper Sulfide Concentrate by ...

2015-2-16  process becomes the most viable and promising approach to treat copper sulfide ore in metallurgy fields. In hy-drometallurgical process, the most widely used pretreatment process is roasting before leaching. There are three common roasting methods: oxidation roasting, chlorination roasting and sulfation roasting. Oxidation roasting needs high roasting temperature and copper will suffer a loss by generating copper ferrite. The exhaust gas (SO2, Cl2, HCl) from the furnace in chlorination roasting process is a threat to the environment. In sulfation roasting, copper was mainly formed to soluble sulfate by water or dilute acid after roasting. Mostly this method is applied to pretreatment of copper concentrate with high percentage of sulfur. A sulfate promoter can change the roasting atmosphere from oxidation to reduction, with releasing

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Leaching of Copper Sulphides - SAIMM

2016-6-8  When considering the leaching of copper sulphides, it is very important to understand the mineralogy of the ore body because not all leaching options are suitable for all minerals. A very effective way to develop the required understanding of the mineralogy is to do test work on site-specific ores. It is important that this test work is done on representative samples from the ore body. In addition, it is important to understand any variability of different zones of the ore body to the leach

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Leaching of Primary Copper Sulfide Ore in Chloride

2018-7-25  Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ore was first cured for 14 days and then leached for 90 days.

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LEACHING OF A Cu-CoORE FROM CONGO USING

2013-7-23  Copper oxide ore deposits in the Central African copper-belt region such as Katanga province of the Republic of Congo contain high levels of well-oxidised copper (2-4% Cu) and cobalt (1-3% Co) [1,2]. The lack of response of Cu-Co oxide minerals during flotation [3] implies that heap or vat leaching should be considered for these ores. In ...

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LEACHING-OF-A-ROASTED-COPPER-SULFIDE

2016-9-28  Leaching of a Roasted Copper Sulfide Ore. Submitted to Engr. Alma Mae Batucan, Instructor. Page 1 of 2 clear solution. A solution consisting of 6 % sulfuric acid added with roasted calcine and water in a 1000 mL beaker was then prepared for leaching. The leaching process was done by stirring for one hour and the resulting solution was filtered.

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(PDF) Recovery of Copper from Copper Sulfide

Under the optimum experimental conditions (sulphation roasting at 240 °C for 1 h; 32 ml sulphuric acid/100 g roasted Ni–Mo ore; water leaching for 2 h. at 98 °C with a liquid-to-solid ratio of ...

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Heap Leaching Oxide and Sulfide Copper Ores

2019-6-22  Heap leaching is a simple means of recovering copper from oxide and oxide-sulfide ores. Although this method requires relatively low capital investment, it suffers from low copper recoveries and relatively high acid consumption. The objectives of

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Leaching of Primary Copper Sulfide Ore in Chloride

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ...

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Bio-Heap Leaching of Primary Copper Sulfide Ore by

JOGMEC has been carrying out the study on primary copper sulfide ores leaching for recovering copper economically and efficiently by heap leaching. In our study, we have been using the primary copper sulfide ore produced in an IOCG deposit. The ore is characterized by high iron content and high acid consumption in leaching. For the optimization of the leaching, the conditions such as ore size ...

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Recovery of Copper from Copper ores by roasting at ...

2021-6-4  roasting time and temperature increase, the leaching of copper will also increase. The leaching of copper maximum in a sample was in the order of leaching of copper in three ores is as Sample C>sample D>Waziristan chalcopyrite. The experiments showed that the untreated raw oxidized copper ore show significant leaching which is 9.5% for saline ...

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Sulphide Leaching - 911 Metallurgist

2015-6-24  Copper sulphate can be used to separate Copper from Nickel in a sulphide ore or Copper from Fe in Cu -Fe sulphide ore. CuSO 4 solution can also be used for removing Pb, Zn, and Fe from copper sulphide ores. In presence of oxidizing agents:

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Leaching of Primary Copper Sulfide Ore in Chloride

2018-7-25  copper extraction, 50.23%, was achieved at 32.9 C with the addition of 0.6 kg of H 2SO4 per ton of ore, 0.525 kg of NaCl per ton of ore, and 0.5 kg of FeSO4 per ton of ore. In respect to copper extraction, the most effective variables were temperature and the addition of NaCl. Keywords: leaching; primary sulfide copper; chalcopyrite; chloride 1.

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LEACHING OF A Cu-CoORE FROM CONGO USING

2013-7-23  Copper oxide ore deposits in the Central African copper-belt region such as Katanga province of the Republic of Congo contain high levels of well-oxidised copper (2-4% Cu) and cobalt (1-3% Co) [1,2]. The lack of response of Cu-Co oxide minerals during flotation [3] implies that heap or vat leaching should be considered for these ores. In ...

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LEACHING OF LOW-GRADE COPPER ORES: A CASE

2017-6-9  The changes in copper content in the ore with the time of exploitation at the RTB mines [9] Oxide copper ore, mixed oxide-sulphide ores and low-grade copper sulphide ore, which, for economic reasons, cannot be enriched by flotation, may be processed by leaching methods. Agents for leaching copper

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LEACHING-OF-A-ROASTED-COPPER-SULFIDE

2016-9-28  LEACHING OF A ROASTED COPPER SULFIDE ORE. Rosselle Kim P. Castillano, Wilfredo T. Gatdula Jr., Gin Derick L. Magno, Jhunalyn H. Parantar METE 157N: HYDROMETALLURGY LABORTORY. ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition.

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Leaching of Roasted Copper Sulfide Ore Copper ...

2017-5-12  Leaching of a Roasted Copper Sulfide Ore. Arniel Vhien A. Lisondra METE 157: HYDROMETALLURGY LABORATORY. ABSTRACT In dilute sulphuric acid leaching solutions, copper sulphide ores are insoluble but a very high extraction can be obtained if the copper ore is in the oxidized condition. To convert the sulphide into the oxide form is the problem. The sulphide ore should be

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(PDF) Recovery of Copper from Copper Sulfide

Under the optimum experimental conditions (sulphation roasting at 240 °C for 1 h; 32 ml sulphuric acid/100 g roasted Ni–Mo ore; water leaching for 2 h. at 98 °C with a liquid-to-solid ratio of ...

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Bioleaching of Low-Grade Copper Sulfide Ore Using a

The effects of several variables on the column bioleaching of copper sulphide ore have been investigated. The copper ore contained chalcopyrite as the main sulfide minerals and bornite and chalcocite as the minor minerals. The experiment was carried out using bench-scale column leach reactors designed in Key Lab of Biometallurgy of Ministry of Education, which were inoculated with the pure ...

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Leaching of a low-grade, copper-nickel sulfide ore. 1. Key ...

2017-9-13  1 Leaching of a low-grade, copper-nickel sulfide ore. 1. Key parameters impacting on Cu recovery during column bioleaching H.R. Watling1*, A.D. Elliot,1 M. Maley,2 W. van Bronswijk2 and C. Hunter3 1 AJ Parker Cooperative Research Centre for Integrated Hydrometallurgy Solutions, CSIRO Minerals, PO Box 7229, Karawara, Western Australia 6152

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METHOD OF LEACHING COPPER SULFIDE ORES

A method of leaching copper sulfide ores, wherein the growth of microorganisms present on ore surfaces and in a leaching solution is inhibited and the pH of the leaching solution is adjusted to 1.5 or less upon leaching of copper from copper sulfide ores containing chalcopyrite, is provided.

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LEACHING OF LOW-GRADE COPPER ORES: A CASE

2017-6-9  The changes in copper content in the ore with the time of exploitation at the RTB mines [9] Oxide copper ore, mixed oxide-sulphide ores and low-grade copper sulphide ore, which, for economic reasons, cannot be enriched by flotation, may be processed by leaching methods. Agents for leaching copper

More

LEACHING OF A Cu-CoORE FROM CONGO USING

2013-7-23  Copper oxide ore deposits in the Central African copper-belt region such as Katanga province of the Republic of Congo contain high levels of well-oxidised copper (2-4% Cu) and cobalt (1-3% Co) [1,2]. The lack of response of Cu-Co oxide minerals during flotation [3] implies that heap or vat leaching should be considered for these ores. In ...

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Optimization of parameters affecting recovery of copper ...

2021-7-1  of copper from low-grade sulfide ores by bioleaching is essential. The physical, chemical, and microbial factors involved in a leaching environment, thecharacteristics of ore for leaching, and the type of leaching process are the most important factors affecting the microbial oxidation of metals. Some

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Leaching of copper concentrates - University of Arizona

2020-4-2  copper oxides have been in common use for some time. Prior to the development of the Sherritt-Gordon process for nickel and cobalt in which copper is recovered as high grade copper sulfide, copper sulfides were economically recovered in a hydrometallurgical process only during the leaching of waste dumps. . Need for Hydrometallurgical Processes

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