oxidation roasting of a copper sulfide ore

Application of Sulfide Copper Ores Oxidizing Roasting ...

Use of the method of direct ore processing [7, 8] is limited for production and economic reasons.A version of rational use of pyrite ores may combined processing with oxidized nickel ores [].Reduction sulfiding melting of the latter using the product of partial oxidation firing of copper ore as a sulfiding agent makes it possible to obtain copper-nickel matte suitable for treatment by

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(PDF) LEACHING OF A ROASTED COPPER SULFIDE ORE

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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Recovery of Copper from Copper Sulfide Concentrate by ...

2015-1-17  Oxidation roasting needs high roasting temperature and copper will suffer a loss by generating copper ferrite. The exhaust gas (SO 2, Cl 2, 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.

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ROASTING OF SULFIDE MINERALS - Wiley Online Library

2017-8-22  ROASTING OF SULFIDE MINERALS In addition to common metals like copper, lead, zinc, and nickel a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. Sulfides are not reduced with the most widely used redu-cing agents, carbon and hydrogen, because the free energy change for the ...

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Pyrite oxidation and copper sulfide ore leaching by ...

2010-10-1  Leaching of a copper sulfide ore in the presence of 25 g NaCl l − 1. Total and ferrous iron concentrations are shown for effluents from (B) an ore column at 36 °C inoculated with mesophilic, T. prosperus -like bacteria (see Section 2.3 ), (C) an un-inoculated ore column at 47 °C and (D) an ore column at 47 °C inoculated with thermotolerant ...

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Oxidation of Copper Sulfides and Secondary Sulfide ...

Secondary copper sulfide enrichment is widely accepted today as resulting from oxidation of copper sulfide minerals, downward migration of soluble copper sulfates, and precipitation as copper sulfide by reaction with primary sulfide minerals. Chalcopyrite is

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Effect of Roasting Temperature for Copper Leaching of ...

2018-12-6  perature 500˚C, roasting time 3 h, concentrate and potassium chloride 1:0.7 was 93.2%. Figure 4 and Figure 5 are shown SEM-EDX analysis results on roasting concentrate with KCl and solid residue after leaching. From Figure 4, it can be seen that roasting cake surface was changed, and the copper sulfide minerals

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Kinetics of oxidation of copper sulfide - Welcome to IAS ...

2016-5-16  SEVERAL investigators,I-5 have studied the oxidation of copper sulfides and it has been generally agreed that in the temperature range 750° to 950°C, the oxida-tion of cuprous sulfide canbe represented as Cu2S + i~-O21 = Cu~O +SOz [i] AF~50o c= --64,850 cal followed by Cu20 + 1702 = 2CuO [2] AF~50oC= --6090 cal

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Roasting of Sulfide Minerals - Physical Chemistry of ...

2016-2-10  Summary. In addition to common metals like copper, lead, zinc, and nickel, a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. In the extraction of metals from sulfides, roasting is applied to achieve different objectives depending on the overall process flow sheet.

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Explain the following:Partial roasting of sulphide ore is ...

Partial roasting of sulphide ore is done in the metallurgy of copper. Partial reduction of sulphide ores give copper oxide which further reacts with copper sulphide to show auto reduction. 2CuS + 3O 2 -> 2CuO + 2SO 2

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Recovery of Copper from Copper Sulfide Concentrate by ...

2015-1-17  Oxidation roasting needs high roasting temperature and copper will suffer a loss by generating copper ferrite. The exhaust gas (SO 2, Cl 2, 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.

More

"Sulfatizing Roasting of a Copper Sulfide Ore" by Walter D ...

At present copper sulfide ores are recovered by pyrometallurgical processes. While the recovery of cop­per from sulfide ores by hydrometallurgical means has long been considered attractive, the impurities, low re­covery and mechanical difficulties have

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Roasting and Leaching Bulk Copper-Zinc Sulfide ...

2020-10-13  the zinc sulfide in the ~harge to zinc oxide and the copper sulfide to copper oxide. Of course, to change zinc sulfide to zinc oxide the prop-er conditions must be maintained, ~ch as temperature and draft control. The roasting of copper sulfide offers few difficulties, the main diffi-culty being that of the formation of ferrites (Cn20 • Fe203)

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The roasting of copper sulphides. II. Natural copper

The roasting of precipitated copper sulphide in a current of air has been investigated by thermogravimetric analysis in the temperature range 150–800° under isothermal conditions.

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(PDF) Recovery of Copper from Copper Sulfide

2021-12-7  Abstract. Sulfation roasting was studied to extract copper from the copper sulfide concentrate. Sodium sul-. fite was added as sulfation a gent to the copper sulfide co ncentrate during roasti ng ...

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Supergene Oxidation of Copper Deposits: Zoning and ...

2011-5-30  accumulations associated with weathering of copper sulfide deposits, with emphasis on minerals that occur in the supergene oxide zones of porphyry copper and skarn ore deposits.“Copper oxides” are defined as those copper minerals containing oxidized anions, especially copper oxides, sensu strictu, sulfates, phosphates, carbonates, and ...

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Kinetics of oxidation of copper sulfide - Welcome to IAS ...

2016-5-16  SEVERAL investigators,I-5 have studied the oxidation of copper sulfides and it has been generally agreed that in the temperature range 750° to 950°C, the oxida-tion of cuprous sulfide canbe represented as Cu2S + i~-O21 = Cu~O +SOz [i] AF~50o c= --64,850 cal followed by Cu20 + 1702 = 2CuO [2] AF~50oC= --6090 cal

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Roasting of Sulfide Minerals - Physical Chemistry of ...

2016-2-10  Summary. In addition to common metals like copper, lead, zinc, and nickel, a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. In the extraction of metals from sulfides, roasting is applied to achieve different objectives depending on the overall process flow sheet.

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Treatment of a refractory gold—copper sulfide

2001-6-1  The larger pale contrast grains embedded in pyrite are copper sulfide minerals. Fig.3 Back scatter cross section image of telluride (light) grains in and around grain boundaries of pyrite (grey). To make the gold accessible, the normal practice is

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Explain the following:Partial roasting of sulphide ore is ...

Partial roasting of sulphide ore is done in the metallurgy of copper. Partial reduction of sulphide ores give copper oxide which further reacts with copper sulphide to show auto reduction. 2CuS + 3O 2 -> 2CuO + 2SO 2

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METHOD OF ROASTING COPPER SULPHIDE

A method of roasting copper-iron-sulphide ore concentrate or mixture, wherein the ratio of sulphur values to copper values is preferably at least one, to yield a calcined product, for the separation and recovery of copper values by acid leaching and electrolytic deposition, having at least 99 percent of its copper values soluble in dilute sulphuric acid and no more than 10 percent of the

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The roasting of copper sulphides. II. Natural copper

The roasting of precipitated copper sulphide in a current of air has been investigated by thermogravimetric analysis in the temperature range 150–800° under isothermal conditions.

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Roasting and Leaching Bulk Copper-Zinc Sulfide ...

2020-10-13  the zinc sulfide in the ~harge to zinc oxide and the copper sulfide to copper oxide. Of course, to change zinc sulfide to zinc oxide the prop-er conditions must be maintained, ~ch as temperature and draft control. The roasting of copper sulfide offers few difficulties, the main diffi-culty being that of the formation of ferrites (Cn20 • Fe203)

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"Sulfatizing Roasting of a Copper Sulfide Ore" by Walter D ...

At present copper sulfide ores are recovered by pyrometallurgical processes. While the recovery of cop­per from sulfide ores by hydrometallurgical means has long been considered attractive, the impurities, low re­covery and mechanical difficulties have

More

Supergene Oxidation of Copper Deposits: Zoning and ...

2011-5-30  accumulations associated with weathering of copper sulfide deposits, with emphasis on minerals that occur in the supergene oxide zones of porphyry copper and skarn ore deposits.“Copper oxides” are defined as those copper minerals containing oxidized anions, especially copper oxides, sensu strictu, sulfates, phosphates, carbonates, and ...

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HIGH OXIDATIVE PROCESS FOR DEAD ROASTING OF

2018-1-4  The ore bodies: Coka Marin, Tenka and Blagojev Kamen, in Eastern Serbia, contain polymetallic sulfide minerals rich in precious metals: silver and gold. Basically, these minerals contain: chalcopyrite, CuFeS2, pyrite, FeS2, as well as lead and zinc sulfide. Oxidation roasting of sulfide compound is the first stage of processing sulfide ...

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Roasting of Sulfide Minerals - Physical Chemistry of ...

2016-2-10  Summary. In addition to common metals like copper, lead, zinc, and nickel, a number of other metals such as antimony, bismuth, cadmium, cobalt, mercury, and molybdenum occur as sulfide minerals. In the extraction of metals from sulfides, roasting is applied to achieve different objectives depending on the overall process flow sheet.

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The Effect of Oxidation on the Flotation Behaviour of ...

2016-6-14  nickel-copper ores processed in the Sudbury area is discusse~ with emphasis on the effect of oxidation on individual minerals, pnmarily pyrrhOlite. In general, moderate oxidation of a freshly ground ore promotes the flotability of all principal sulphides in the ore leading to a bulk flotation concentrate. The ease of individual mineral flotability

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LIST OF ORES AND THEIR NAMES SULPHIDE ORE

2021-5-27  LIST OF ORES AND THEIR NAMES SULPHIDE ORE PbS Galena HgS Cinnabar ZnS Zinc blende Cu2S Copper glance CuFeS2 Copper Pyrites (Chalcopyrite) FeS2 Iron pyrites or Fool's gold Ag2S Silver glance or Argentite Cu2S.Ag2S Copper silver glance Ag2S.Sb2S3 Pyrargirite or Rubisilver HALIDE ORE NaCl Rock Salt KCl Sylvine

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Which one of the following is the chief ore of copper ...

It is the most important copper ore. It is a sulfide mineral, a member of iron $(2 + )$ sulfides and a copper sulfide. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. Some silica is also added and a hot air blast is thrown into the mixture to obtain blister copper which is purified by electrorefining ...

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