copper nickel sulphide matte separation technique

Enhanced methods for nickel recovery from low-grade ores ...

This solution is heated to remove copper, and the use of hydrogen gas under high pressure precipitates nickel metal; remaining nickel in the solution can be precipitated by adding hydrogen sulfide. The process steps of the two methods of magmatic sulfide ores can be found in Figure 4 .

(PDF) A Review of Nickel Pyrometallurgical Operation

The process of oxidizing low-nickel matte using flowing air in a horizontal converter results in a large amount of slag containing nickel, cobalt, copper, and other metals.

Separation of nickel from copper - THE INTERNATIONAL ...

The iron sulfide along with the associated nonferrous sulfide minerals is comminuted to at least about minus 20 mesh Tyler Screen Size (T.S.S.) in order to insure good solid-liquid and solid-gas contact and dispersion and to insure good separation of nickel from copper with corresponding high grade copper concentrates being obtained.

Separation of Copper-Nickel by Flotation and Magnetic Methods

At the INCO (International Nickel Co.) operation in Sudbury, Ontario, further separation of nickel from copper is accomplished by application of mineral dressing techniques to slow-cooled nickel mattes. These mattes contain about 50 pct Ni, 30 pct Cu, 20 pct S, and <1 pct Fe. They consist of grains of chalcocite (Cu2S) in a matrix of ...

The Best Way to Separate Copper and Nickel

Then wait until the matte cools down, during which time, particles of copper sulfide, nickel sulfide, and a metallic fraction will be formed. In the end, you can recover the metals by means of crushing, grinding, flotation and magnetic separation. Besides, leaching one or two metals from the matte also can be used to separate the copper and nickel.

cyclone separator copper nickel

Finally copper 3 and nickel sulphate thus separated were subjected to electrolysis to give P/M grade copper and nickel powders Various parameters Slope = 1.5133 2.5 were optimized on bench scale and continuous operation for the separation of copper from nickel and are discussed brieﬂy in the 2 following text see text below The ﬂow sheet ...

nickel processing from sulfide ores

Nickel Extraction and purification. Apr 24 2010 · Nickel sulfide ores undergo flotation differential flotation if Ni Fe ratio is too low and then are smelted After producing the nickel matte further processing is done via the Sherritt Gordon process First copper is removed by adding hydrogen sulfide leaving a concentrate of only cobalt and nickel

Cobalt extraction - Wikipedia

The residue is removed. A feed of matte and sulfide concentrate containing approximately 0.4% cobalt and 30% sulfur is pressure leached at elevated temperature and pressure in an ammoniacal solution to produce a solution of nickel, copper and cobalt. By boiling away the ammonia; copper is precipitated as a sulfide and sent to a smelter.

processing of nickel

Abstract Analysis of several nickel mattes from around the world shows a significant variation in their nickel and copper content Typically matte contains an alloy heazlewoodite Ni 3 S 2 and a copper sulphide phaseThe various commercial methods of processing these mattes are reviewed and some of the fundamental factors that determine the choice ...

nickel processing | Britannica

Sulfide deposits are usually mined by underground techniques in a manner similar to copper, although some deposits have been mined using open pits in the early stages. The mining of laterites is basically an earth-moving operation, with large shovels, draglines, or front-end loaders extracting the nickel-rich strata and discarding large ...

Table 1 | Development of the Nickel-Refining Production at ...

Abstract As a result of the innovative solutions found due to the joint efforts of Russian and Finnish researchers, the recovery of nonferrous and precious metals in Norilsk Nickel Harjavalta was significantly increased (%): the recovery of Ni was increased to 98.7; that of Cu, to 99.5; Pt, to 99.6; and Pd to 99.6. Simultaneously, a copper cake (one of the main commercial products) of an ...

Nickel | BHP

Nickel is a silvery white, naturally occurring metallic element with a light golden tinge. There are two main types of nickel deposits - laterite and sulphide – each requiring a different extraction technique. Stainless steel. Nickel sulphide and laterite ore are used to make nickel metal, predominantly for the production of stainless steel.

Segregation-separation of copper from nickel in copper ...

The data of the 675° C. segregation roast show copper recoveries in excess of 80% with good selectivity can be obtained by practice of the present invention. A copper nickel bulk flotation sulfide concentrate containing 13.5% copper and 2.7% nickel was dead roasted at 850° C. to a sulfur content of 0.2%.

Nickel element extraction, mining technique – flash ...

After producing the nickel matte, auxiliary processing is completed by means of the Sherrit-Gowden development. 1st copper is unconcerned by toting up hydrogen sulfide, parting a muse of solitary cobalt and nickel. Solvent extraction then proficiently disconnects the …

NIOSHTIC-2 Publications Search - 10008298 - Separation of ...

The technique utilizes a two-stage bulk sulfide flotation procedure to obtain a copper concentrate that analyzed 25 percent copper and 0.5 percent nickel, and a nickel concentrate that analyzed 10 percent nickel and about 1 percent copper. As an alternative route, flotation of matte was also investigated.

nickel processing - Extraction and refining | Britannica

Various processes are used to treat nickel matte. One process is the ammonia pressure leach, in which nickel is recovered from solution using hydrogen reduction, and the sulfur is recovered as ammonium sulfate for use as fertilizer.In another, the matte may be roasted to produce high-grade nickel oxides; these are subjected to a pressure leach, and the solution is electro- and carbonyl refined.

Hydromet Technology - Vale

The nickel industry worldwide has traditionally smelted concentrates produced from nickel, copper and cobalt sulphide ores to make an intermediate sulphide product called matte. Hydrometallurgy has been used for refining the matte to produce high purity nickel, copper and cobalt for the market.

Vale's Base Metals Video Series

The main mineral processing method for copper-nickel sulphide is flotation separation. Different minerals respond to water and to various added chemicals in diverse ways. By knowing the minerals' respective surface properties, we can separate the different minerals in the feedstock. The valuable minerals such as nickel and copper

OUTOTEC SMELTING SOLUTIONS FOR THE PGM INDUSTRY

Nickel Smelter to process over 1.1 Mt/a of nickel sulphide feeds. The process is also used at Jilin Nickel in China to process 245 kt/a of nickel sulphide feeds. The Outotec Ausmelt Nickel Converting Process is used for the converting of low-grade matte into high-

Development of Copper/Nickel Separation at INCO

Improved copper / nickel separation in milling operations has the potential to substantially improve the processing of the resulting concentrates and thus the overall return from the extraction of nickel and copper from sulfide ores.INTRODUCTIONNickel metal by itself or in alloys with other metals and materials makes a significant contribution ...

Treatment of Nickel-Copper Matte - NASA/ADS

In the treatment of copper-nickel sulfide ores, separation of copper from the nickel has been one of the major metallurgical problems. This article describes techniques adopted by Inco on the basis of its laboratory studies and pilot-plant development.

Aggregates for Concrete in Nigeria

Nickel Ore Mining Process. Nickel ore mainly consists of copper-nickel sulfide ore and nickel oxide ore, beneficiation and processing of both methods is completely different. Copper-nickel sulfide ore beneficiation methods: The most important is the flotation. The magnetic and the gravity separation is usually secondary dressing method.

Applications of Chlorination of Copper: Separation ...

Chlorination technique for simultaneously extracting Ni and Cu from mixed oxide-sulfide copper-nickel ore or selective chlorination for the removal of copper from copper slag was developed. Copper film is a promising material which can ... in the separation between matte and slag, low recovery of valuable metals, and etc. A low-temperature ...

Extraction and Refining of the Platinum Metals

bottom layer of nickel matte is tapped intermittently. By careful control of temperature and sulphur content a nickel matte can be obtained containing little copper and all the platinum metals, whereas any gold will have followed the copper sulphide into the "tops" layer. Casting the enrichd nickel matte into pigs. These are then crushed ...

THE APPLICATION OF THE CESL NICKEL PROCESS TO LATERITES

In 1995, CESL commenced benchscale testwork on pressure oxidation of nickel-copper-cobalt sulphide concentrates. Initial results were favourable, and a flowsheet was developed. Additional unit operations were built at the copper pilot plant in early 1996 to allow for nickel – cobalt recovery and a campaign was run in the last half of 1996.

Method of electrolytic refining of nickel

SUBSTANCE: proposed method includes floatation separation of converter matte into copper and nickel concentrates, oxidizing annealing of nickel concentrate, reduction of nickel monoxide, leaching-out of reduced nickel monoxide, cleaning the leaching-out solutions in succession from iron, copper, cobalt and electrical extraction of nickel.

Efficient Synchronous Extraction of Nickel, Copper, and ...

Synchronous extractions of nickel, copper, and cobalt by selective chlorinating roasting and water leaching to low–grade nickel–copper matte. Separation and …

Extraction and Refining of the Platinum Metals | Johnson ...

Here pure nickel cathodes are produced, while the platinum metals accumulate in the anode residues and are removed for the separation and refining of the individual metals. As in the copper refinery, the cells are constructed of rubber-lined concrete and 24 cells make up one unit. Internal dimensions of the cells are about 11 ½ × 2 × 2½ feet.