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Leaching Of Roasted Copper Sulfide Ore

Leaching Of Roasted Copper Sulfide Ore

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Leaching of Roasted Copper Sulfide Ore Copper

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

Leaching of Primary Copper Sulfide Ore in ChlorideFerrous

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 ...

Leaching of copperI sulphide by sulphuric acid solution

The effect of mechanical activation on the copper leaching of copper sulfide, CuS, in 1 M HNO3 slurry density 10 gL was investigated by analysis of the leachability and the apparent activation ...

Sulfatizing Roasting of a Copper Sulfide Ore Semantic

Sulfatizing Roasting of a Copper Sulfide Ore inproceedingsFinnegan1948SulfatizingRO, titleSulfatizing Roasting of a Copper Sulfide Ore, authorWalter D. Finnegan, year1948 ... The Electrowiruing of Copper from Roasted Sulfides. ... Roasting and Leaching Bulk Copper-Zinc Concentrates with the Subsequent Recovery of the Metals by ...

Acid leaching of oxidesulfide copper ore prior the

leaching from low grade copper oxide ore by sulphuric acid, and they have obtained leaching percent of cop-per over 90. Compared with the copper leaching effi-ciency of about 35 in the mill running technology the leaching process has achieved a better economic result. In the present study the leaching of oxide-sulfide copper ore was considered, and a modification of the

US3751240A 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 iron ...

Leaching of Copper Sulphides SAIMM

POX in a copper heap leach circuit. Figure 2. Simplified ferric leaching flowsheet. Figure 3. Copper chloride leach process. Leaching Chemistry As outlined earlier, the leaching chemistry that takes place within a total POX autoclave is very complex and will vary from case to case according to the mineralogy of the concentrate fed to the

Leaching kinetics of calcification roasting calcinate from

Jul 27, 2015 The SEM-EDS of the raw materials, calcinates and leaching residues were illustrated in Fig. 2ac. The SEM of the complex sulfide copper ore as observed in Fig. 2a presents a dense surface, different shapes and sizes of mineral species, and the EDS chemical analysis at the assigned points of the raw material corroborates the presence of Cu and other elements such as Pb, S and Fe.

Silica is added to roasted copper ore during extraction in

Silica is added during smelting in order to remove iron oxides from copper sulphide and oxides. During roasting the iron sulfides react with oxygen in air or oxygen enriched air to produce iron oxides mainly as F eO, but with some magnetite F e3. and sulfur dioxide. Copper sulfide and iron oxide can mix, but when sufficient silica is ...

PDF Recovery of Copper from Copper Sulfide Concentrate

Under the optimum experimental conditions sulphation roasting at 240 C for 1 h 32 ml sulphuric acid100 g roasted NiMo ore water leaching for 2 h. at 98 C with a liquid-to-solid ratio of ...

Accelerating Copper Leaching from Sulfide Ores in Acid

This work investigates the effect of an agglomeration and curing pretreatment on leaching of a copper sulfide ore, mainly chalcopyrite, using mini-columns in acid-nitrate-chloride media. Ten pretreatment tests were conducted to evaluate different variables, namely the addition of nitrate as NaNO3 11.7 and 23.3 kgton, chloride as NaCl 2.1 and 19.8 kgton, curing time 20 and 30 days and ...

Recovery of Copper from Copper Sulfide Concentrate by

Prasad and Pandey studied the sulfation roasting of the mixture of copper-iron sulfides and copper sulfide formed copper sulfate, whereas iron sulfide converted mostly to hematite at 500C 9 . In the present work, a sulfation roasting-acid leaching process that associated pyrometallurgical and hydrometallurgical methods has been used for the ...

Recovery of Copper from Copper Sulfide Concentrate by

The sulfation roasting-leaching experiments were carried out at a laboratory scale2 g. The addition of Na 2SO 3 and copper sulfide concentrate were mixed well in a mortaragate , followed by roasting in a muffle electric fur-nace. The roasted sample was then cooled to room temperature and leached with 5 H 2SO 4 VV at room tem-

Roasting and Leaching Bulk CopperZinc Sulfide

roasting and leaching a bulk copper-zinc sulfide concentrate, and the subsequent separation of the metals from the leach solution by electro-lytic deposition. The present practice of concentrating copper-zinc ores consists of two flotation processes one of Which involves selective flotation for the recovery of the su.lfides of each metal.

Jetti Unlocking Vast Stranded Copper Resources

70 of the worlds copper resources estimated to be worth more than 20 trillion are tied up in primary sulfide ores. The majority of this ore is too low-grade to justify traditional processing, and the alternative low-cost method of leaching does not work well

What is the best method for sulfide copper leaching

Copper sulphides normally concentrates obtained by flotation, were leached with acidic ferric chloride solutions at temperatures above 90 o C maintaining molar ratio for the time varying from 6

Optimization of sulfuric acid leaching of roasted

Aug 26, 2020 Chalcopyrite CuFeS2 is commonly used ore in production of copper, but leaching of this ore is very slow and inefficient due to passivation during leaching at atmospheric conditions. In this study, in order to overcome drawbacks of the passivation layers, the concentrate supplied from Eti Bakr A.. K re Plant in Turkey was roasted at 600 C for 1 h and after leached.

Optimization of sulfuric acid leaching of roasted

Aug 26, 2020 It is stated in the literature that the consumption of sulfuric acid, which is the cheapest solvent for leaching of oxidized copper ores 37 , varies between 0.4 and 0.7 tons H 2 SO 4 per ton of copper recovered, depending on the nature of the ore 36 .

A fresh approach to sulfide ores CIM

Jun 26, 2017 The traditional route for extracting copper from sulfide ores is smelting. Yet there is a growing case for leaching sulfides from lower grade ore bodies and especially for those ore bodies containing problematic elements like arsenic, which make smelting less economical. Smelting is increasingly expensive because, in general, smelters require a ...

Efficient Synchronous Extraction of Nickel Copper and

Jun 18, 2020 In general, the hydrometallurgical process of sulfide ore including the heap leaching 12, ... and cobalt by selective chlorinating roasting and water leaching to lowgrade nickelcopper matte.

Cobalt and copper recovery from the ancient flotation

copper sulfide to a soluble sulfate, while iron ... sulfation of complex sulfide ore as per the following cyclic reaction 10 , 30 , 31 . MeSs Na 2SO 4 s MeSO 4 ... Cobalt and copper recovery from the ancient flotation tailings by selective sulfation roast - Leaching process

Recent Developments in Copper Hydrometallurgy

Morenci Enhanced Stockpile Leaching Low-grade ore from Western Copper deposit yBelow mill cut off grade material yMixed sulfide minerals chalcopyrite, chalcocite y188 million ton stockpile to be constructed yAir injection yBacteria augmentation yControlled solution application Largest engineered chalcopyrite stockpile leach in the world

Copper Ore Carbonate Leaching Process

I by roasting copper sulfide ores ii the leaching process iii the bacterial method i by roasting copper sulfide ores. the enriched ore is roasted with just enough air to convert the iron sulfide to ironll oxide the solid mixture is then mixed with calcium carbonate limestone, silica sand and heated to 1300 k.

Copper Concentrates Cargo Handbook the worlds

Sulfide ores are moved to a concentrating stage, while oxide ores are routed to leaching tanks. The first commercial copper product, in an increasing chain of added value, is the copper concentrate, which main components are copper, iron and sulfide.

Copper processing Roasting smelting and converting

Copper processing - Copper processing - Roasting, smelting, and converting Once a concentrate has been produced containing copper and other metals of value such as gold and silver, the next step is to remove impurity elements. In older processes the concentrate, containing between 5 and 10 percent water, is first roasted in a cylindrical, refractory-lined furnace of either the hearth or ...

Effect of Roasting Temperature for Copper Leaching of

This study was undertaken to develop a cost-effective method of copper leaching in sulfide concentrate involving minerals as chalcopyrite and pyrite. The combined methods involving low temperature roasting of sulfide copper minerals with potassium chlorides without the formation of sulfurous gases and their evolution into the atmosphere is suggested.

Effect of Roasting Temperature for Copper Leaching of

DOI 10.4236ojapps.2018.812044 Corpus ID 104305851. Effect of Roasting Temperature for Copper Leaching of Sulfide Concentrate by Combined Methods articleNyamjargal2018EffectOR, titleEffect of Roasting Temperature for Copper Leaching of Sulfide Concentrate by Combined Methods, authorLkhamtogmid Nyamjargal and G. Batdemberel and G. Burmaa and Dashdendev Burmaa,

Sulfide Ore Treatment Gold Silver Copper Cobalt

Oct 20, 2017 A procedure was developed for recovering gold, silver, cobalt, copper, and zinc from a massive sulfide ore by a hydro-metallurgical process. The procedure consists of 1 oxygen pressure leaching 2 iron, arsenic, and copper removal from the leach solution by precipitation 3 selective extraction of cobalt and zinc from solution 4 electro-deposition of the cobalt and zinc from the strip ...

Optimization of parameters affecting recovery of

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

Recovery of Platinum Palladium and Gold From

Effect of leaching temperature on H202-6 HCI leaching of 8000 C roasted ... conjunction with iron, nickel, and copper sulfides which are found in mineralized layers of the Banded Zone of the Complex. ... techniques for treating sulfide ores. Samples of Stillwater Complex ores were beneficiated by froth flotation l-l and matte smelting ...


LEACHING-OF-A-ROASTED-COPPER-SULFIDE-ORE.pdf - Free download as PDF File .pdf, Text File .txt or read online for free.


Copper is recovered from ores containing about 10-15 percent copper in the form of a sulfide in the presence of significant amounts of iron and nickel, by sulfatizing roasting the ore in an atmosphere including 5-15 percent SO 2 at a temperature of from about 580 C to about 625 C and leaching soluble copper salt therefrom with water.


The process according to claim 4, wherein said iron sulfide concentrate is roasted in the presence of excess oxygen to produce a calcine of iron oxide, wherein sponge iron is produced from said iron oxide, adapted for precipitating copper from the sulfur dioxide treated pregnant solution that has resulted from the leaching of the copper oxide ore.