C N C R U S H E R

Why the world is demanding more cobalt, and why new ...

Sep 29, 2017· Cobalt arsenides are processed using a roasting stage, followed by a pressure leach. Due to health and environmental issues almost all mines recovering these cobalt ores have been closed down. Coppercobalt (oxides and sulfides) have a more complex series of steps that are followed

Recovery of metal values from copper slags by flotation ...

The recovery of copper and cobalt from ancient copper slags from the Küre region of Turkey was investigated. A fayalitictype of ancient copper slag containing % Cu, % Co and % Fe were subjected to an experimental study. Two different routes were followed to recover the metal values.

Sulfatizing roasting for copper and cobalt production

Sulfatizing roasting belongs to a production process for copper and cobalt from sulfidic ores. Figure 1 shows a simplified block flow diagram of the location of the roasting stage in the entire process map. The objective of roasting is a selective sulfation of copper and cobalt. Iron is fully oxidized to ferric oxide.

ROASTING OF SULFIDE MINERALS

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 reducing agents, carbon and hydrogen, because the free energy change for the ...

Extractive Metallurgy of Nickel, Cobalt and Platinum Group ...

Smelting of Nickel Sulfide Concentrates by Roasting and Electric Furnace Smelting Principles of Roasting and Smelting ... Production of Cobalt from the Copper–Cobalt Ores of the Central African Copperbelt Typical Ore Deposit. ... In 2013 coauthored Extractive Metallurgy of Nickel, Cobalt and Platinum Group Metals, ...

copper processing | Definition, History, Facts ...

Copper processing, the extraction of copper from its ores and the preparation of copper metal or chemical compounds for use in various products. In its pure form or as an alloy, copper (Cu) is one of the most important metals in society. The pure metal has a facecentred cubic crystal structure, and ...

2Recovery of Copper and Cobalt from Copper Slags as …

Recovery of Copper and Cobalt from Copper Slags as Selective 391 Fig. 1 Effect of roasting time on metal dissolutions at 600 °C and 1:1 slag/pyrite ratio. Fig. 2 Effect of roasting time on metal dissolutions at 600 °C and 5:6:4 slag/pyrite/copper concentrate ratio. 220 g mixture of slag/pyrite/copper concentrate

Recovery of copper and cobalt from ancient slag Gülay ...

About million tonnes of copper smelter slag are available in Küre, northern part of Turkey. This slag contains large amounts of metallic values such as copper and cobalt. A representative slag sample containing % Cu, % Co and % Fe was used in the experimental studies.

Copper extraction Wikipedia

Copper extraction refers to the methods used to obtain copper from its conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.

(PDF) Recovery of metal values from copper slags by ...

Roasting of copper converter slag containing % copper, % nickel and % cobalt with ammonium sulphate open to atmosphere has been carried out in order to achieve sulphation of copper ...

RECOVERY OF COPPER FROM SMELTING SLAG BY …

Dissolution of copper and iron from the calcine was found to be very fast and was complete within the first few minutes. The water temperature in the leaching step was found to have no effect on extraction of copper and iron from the calcine in the range of 30 to 85 oC. Keywords: copper, slag, sulphation, roasting, acid baking, leaching

WO2017145099A1 Process for recovery of pure cobalt oxide ...

The present invention relates to a process and method of recovering electrode materials like cobalt and graphite along with other valuable metals from used lithiumion batteries having high manganese content. The valuable metals include lithium, manganese, copper, iron, aluminium etc. In this method, lithium ion battery used as a raw material that undergo through unit operations like shredding ...

Cobalt extraction Wikipedia

Cobalt extraction refers to the techniques used to extract cobalt from its ores and other compound ores. Several methods exist for the separation of cobalt from copper and depend on the concentration of cobalt and the exact composition of the used ore

Laboratoryscale sulphation roasting testwork for copper ...

Laboratoryscale sulphation roasting testwork for copper and cobalt production P. Sithole, Goso, and H. Lagendijk Mintek, Randburg Laboratory scale sulphation roasting testwork was conducted to study the sulphation efficiency and recovery of cobalt and copper fr om synthetic and natural raw materials. The sulphation roasting efficiency was ...

Copper Mining and Extraction Sulfide Ores

Stage 3: Roasting At this stage of the process, the chemical reactions begin. They convert the copper minerals into copper metal. We can illustrate the types of process using the example of chalcopyrite – CuFeS the formula, it is clear that iron and sulfur have to be removed in order to produce copper.

Synchronous extractions of nickel, copper, and cobalt by ...

Hence, a new method is necessary to treat matte containing multiple metals, such as nickelcoppercobaltiron matte. Chlorinating roasting is an activated method of chlorinating metals to form metal chlorides, and hydrometallurgy and pyrometallurgy can be used to …

A study of recovery of copper and cobalt from copper ...

Copper and cobalt recovery from a copper–cobalt ore of Democratic Republic of Congo (DRC) by ammonium chloride roasting is studied. The effects of roasting temperature, roasting time, and the dosage of ammonium chloride on the leaching rate of copper and cobalt are investigated.

Luilu Metallurgical Plant – Katanga Mining Limited

The Luilu Metallurgical Plant was constructed in 1960 and expanded in 1972. It comprises three roasters, leaching circuits and electrolytic cells for copper and cobalt production. It has a potential capacity of 175,000 tonnes of copper and 8,000 tonnes of cobalt per year. The Luilu facility operates by first roasting

The Revovery of Copper and Cobalt from Oxidized Copper …

The aim of this study was to develop a method for obtaining copper and cobalt from oxidized copper ore and converter slag. In order to convert the copper and cobalt into sulfate compounds the main step was to roast the samples obtained by sulfurization and transfer the samples into solution. First the oxidized copper ore was roasted, followed ...

Design of Copper Cobalt Sulphating Roasters for Katanga ...

In late 2006, Hatch was awarded a contract to supply fluid bed technology for the Katanga Mining Limited (KML) coppercobalt processing project in Congo (DRC). The new roasting facility is part of the revitalization of an existing facility in the Katanga Province of the DRC being undertaken by KML.

Copper Mining and Processing: Processing of Copper Ores ...

Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of % pure copper called cathodes, which will ultimately be made into products for everyday most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...

Primary Copper Smelting

Copper is produced in the U. S. primarily by pyrometallurgical smelting methods. Pyrometallurgical techniques use heat to separate copper from copper sulfide ore concentrates. Process steps include mining, concentration, roasting, smelting, converting, and finally fire and electrolytic refining. Process Description24

Recovery of metal values from copper smelter slags by ...

TiJmen, F. and Bailey, , 1990. Recovery of metal values from copper smelter slags by roasting with pyrite. Hydrometallurgy, 25:317328. Sulphation roasting of primary and secondary copper slags has been carried out to facilitate the dissolution of copper, nickel, cobalt, zinc and iron.

Cobalt Recovery Through Sulphating Roast of ... SpringerLink

The new roaster and the associated solids and offgas treatment plants are part of the revitalization of an existing facility, which was historically one of the largest cobalt and copper producers in the world. The sulphide ore fed to the roasting plant is treated under sulphating roast conditions, followed by hydrometallurgical extraction.

Major Mines Projects | Kamoto Concentrator

leaching circuit. The final sulphide concentrate from KTC is also thickened and stored before being fed to the roasting circuit. The WOL Project is expected to achieve overall recoveries of +85% and +65% for copper and cobalt, respectively. The WOL upgrade will include the following: Using existing KTC infrastructure to mill and Sulphide float;

Recovery of Copper from Copper Sulfide Concentrate by ...

Roasting temperature was the key factor considered during sulfation roasting. Complex copper sulfides decomposed sufficiently and less copper sulfate decomposed were the key step to achieve high copper extraction. When the roasting temperature is no higher than 650˚C, there would be mainly metal sulfates and sulfur dioxide formed.

Copper/Cobalt and the Battery Market Disruptor

Geological conditions influence how cobalt is processed from cobaltcontaining ore. Over 95% of the world’s mined cobalt is produced as a byproduct of copper (60%) and nickel (35%). Cobalt expansion projects dependent on copper and nickel dynamics. Cobalt is found economically in 2 main deposit types: SULPHIDES AND LATERITES

Recovery of metal values from copper slags by flotation ...

pyrite roasting tests with slag, the effects of roasting time, the pyrite:slag ratio and the roasting temperature on the dis solution efficiencies of copper and cobalt were investigated.

Sulfide Ore Treatment Gold Silver Copper Cobalt ...

Roasting at 500° to 600° C (932° to 1112° F) gave the best cobalt, copper, and zinc extractions. The roastleach residues were treated for gold and silver recovery using …

Sulphating roasting of coppercobalt SAIMM

Sulphating roasting of coppercobalt concentrates by J. Güntner* and J. Hammerschmidt* Synopsis Most copper/cobalt ores from the Central African Copperbelt contain sulphidic compounds, which are not extractable in direct leaching. Roasting provides the possibility to transfer the valuable

Copper Cobalt Sulfating Roasting Outotec

Sulfating roasting is generally used for processing copperconcentrates in combination with electrowinning. The copper sulfide is transformed into watersoluble copper sulfate and the iron sulfide into insoluble iron sulfating roasters run with a slurry feed and do not require a wasteheat boiler system in the offgas stream.

OUTOTEC ROASTING SOLUTIONS

Most of our sulfating roasting plants are used for copper/ cobalt concentrate applications in combination with electrowinning. The copper sulfide is transformed into watersoluble copper sulfate and the iron sulfide into insoluble iron oxide. Standard sulfating roasters run with a slurry feed and do not require a wasteheat boiler