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Separation of copper and cobalt–nickel sulphide

The selective separation and recovery of copper, cadmium, zinc, and nickel from a polymetallic solution with sulphide precipitation using thioacetamide have been investigated.

Copper matte slag reaction sequences and separation

2018-12-27  that the matte droplets are mechanically entrained in the slag due to several factors, such as gas bubbles [26] and sticking to solids [27]. Another possibility of copper losses is the chemical dissolution of copper [8, 28], in which the sulfidic copper in matte is oxidized to slag as cuprous oxide through Reaction 8.

2008:111 MASTER'S THESIS Distribution of Elements in

2016-10-4  In Fe-O-S ternary system and in copper making temperature range, FeS is miscible with FeO and Fe3O4. In order to eliminate this miscibility as well as to achieve maximum separation between matte and slag during smelting, around 30% of the weight of slag, silica (SiO2) is added to the melt to form fayalite slag and to release the FeS from copper

Distribution of Precious Metals During the Reducing

2018-9-25  50 Noble Metals 2.2 Distribution ratio of precious metals between melte d phases The distribution ratio of a precious metal, X, between two condensed immiscible phases, A 1 and A 2 in a thermodynamic system, L X A 1 /A 2, is defined as follows. LX A 1/A 2 = [mass % X]A 1 / <mass % X>A 2 (1) where [ ]A 1 and < >A 2 indicate the A1 and the A2 phase, respectively. . Assuming

[PDF] TREATMENT OF NICKEL-COPPER MATTE Free

TREATMENT OF NICKEL-COPPER MATTE In t h e treatment of copper-nickel sulfide ores, separation of copper from t h e nickel has been one of the major metallurgical problems. This article describes techniques adopted b y Inco o n t h e basis of its laboratory studies and pilot-plant development.

Separating the Platinum Group Metals by Liquid-Liquid

copper-nickel sulphide matte, and hydro- metallurgical concentration 3. Final refining to produce the individual platinum group metals. This article concentrates on the last stage, the final refining stage, of this overall process. Current refining processes are based

Separation of nickel from copper in autoclave by

Claim 1. In a process for the separation of nickel from copper contained in solid particles selected from the group consisting of ground copper and nickel-containing sulphidic matte and sulphidic alloys, which particles have been slurried in an acidic solution and chlorine leached at atmospheric pressure to produce a slurry of particles in a chloride solution, the improvement comprising

Electronic Structure and Oxidation Mechanism of

2020-8-18  The nickel–copper converter matte is an intermediate from smelting of sulfide or laterite ores for the recovery of nickel and generally consists of dzharleit (Cu 1.96 S), heazlewoodite (Ni 3 S 2), and some magnetic alloys. Hydrometallurgical processes for the Ni–Cu matte led to products with high purity, less SO 2 emissions during refining, and shorter hold-up time of the main base metals

Recovery of cobalt, nickel, and copper from slags,

2012-2-7  The platinum group metals (PGMs) are often found together with nickel, copper, and cobalt sulphide deposits. Even in small quantities, these can be economically significant. The PGMs follow the nickel, copper, and iron through the pyrometallurgical process, and can be extracted from the hydrometallurgical leach residues for further processing.

Distribution of Precious Metals During the Reducing

2018-9-25  50 Noble Metals 2.2 Distribution ratio of precious metals between melte d phases The distribution ratio of a precious metal, X, between two condensed immiscible phases, A 1 and A 2 in a thermodynamic system, L X A 1 /A 2, is defined as follows. LX A 1/A 2 = [mass % X]A 1 / <mass % X>A 2 (1) where [ ]A 1 and < >A 2 indicate the A1 and the A2 phase, respectively. . Assuming

THE APPLICATION OF THE CESL NICKEL PROCESS TO

2015-11-20  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.

MURDOCH RESEARCH REPOSITORY

2011-5-12  A high grade nickel matte can also be produced (Figure 4) by adding sulphur in the form of elemental sulphur or pyrite to the calcined reduced ore in the kiln. The electric furnace then produces a crude matte which is converted by air blowing to a final product containing 77-78% nickel and 21-22% sulphur and less than 1 % iron.

Metallic sulphide and sodium carbonate interacting

2015-12-3  studies of melting sulphide concentrates with sodi-um and potassium salts and the development of lead, copper and nickel concentrate processing methods. N.V.Khodov’s patent [5] proposes to recover lead by feeding lead-containing products and oxygen con-taining gases to the reaction zone of molten potas-

Preconcentration of Precious Metals by Tellurium

A fire-assay method is described to separate the platinum-group elements, silver and gold from rocks and ores using tellurium sulphide as the collector. The residue remaining after dissolution of the tellurium sulphide button in hydrochloric acid is filtered off and irradiated with reactor neutrons, and analysed by gamma-ray spectrometry.

[PDF] TREATMENT OF NICKEL-COPPER MATTE Free

TREATMENT OF NICKEL-COPPER MATTE In t h e treatment of copper-nickel sulfide ores, separation of copper from t h e nickel has been one of the major metallurgical problems. This article describes techniques adopted b y Inco o n t h e basis of its laboratory studies and pilot-plant development.

RECENT ADVANCES IN THE EXTRACTION OF COPPER,

2012-7-25  reverberatory furnace for copper matte smelting is shown in Fig. 5. The charge is heated in the furnace to 1200-1300°C. Iron oxide (FeO) is removed as a slag containing mainly FeO. SiO2. The remaining sulfides melt collected as matte. The matte is heavier than the slag and, therefore, collects at the bottom with good matte/slag separation.

THE APPLICATION OF THE CESL NICKEL PROCESS TO

2015-11-20  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.

Electronic Structure and Oxidation Mechanism of

2020-8-18  The nickel–copper converter matte is an intermediate from smelting of sulfide or laterite ores for the recovery of nickel and generally consists of dzharleit (Cu 1.96 S), heazlewoodite (Ni 3 S 2), and some magnetic alloys. Hydrometallurgical processes for the Ni–Cu matte led to products with high purity, less SO 2 emissions during refining, and shorter hold-up time of the main base metals

Environmental-Friendly Process for Recovering

2019-5-26  Contamination of heavy metals from mill tailings is a global problem. China’s Jinchuan Group Limited has stored approximately one billion tons of mill tailings which contain toxic levels of copper, nickel, and other metal compounds. To solve the problem, this work extended the principle of hydrometallurgical extraction to the recovery of copper/nickel from Jinchuan tailings and designed an

PROCESSING TECHNOLOGIESPolymetallic nodules.

2019-1-7  of cobalt. Copper, nickel and cobalt are precipitated from the resulting solution using hydrogen sulphide. The copper sulphide is roasted to give an o xide concentrate, while the nickel-cobalt concentrate is kept as a sulphide. At t he refinery, the copper oxide concentrate is leached by sulphuric acid and the metal extracted by electrowinning.

Distribution of Precious Metals During the Reducing

2018-9-25  50 Noble Metals 2.2 Distribution ratio of precious metals between melte d phases The distribution ratio of a precious metal, X, between two condensed immiscible phases, A 1 and A 2 in a thermodynamic system, L X A 1 /A 2, is defined as follows. LX A 1/A 2 = [mass % X]A 1 / <mass % X>A 2 (1) where [ ]A 1 and < >A 2 indicate the A1 and the A2 phase, respectively. . Assuming

OVERVIEW OF PGM PROCESSING Anglo American

2015-1-12  sulphide ores containing PGMs, Nickel, Copper and other metals: • Platinum (Pt), Palladium (Pd), Rhodium (Rh) and Ruthenium (Ru) are the most prevalent of the six PGMs, with Iridium (Ir), and Osmium (Os) found in much smaller quantities

(PDF) Nickel laterite processing and electrowinning

Sherritt International Corporation separation, (iv) production of either a sulphide concen- formed a joint enterprise with General Nickel S.A. trate or upgraded electrolyte and (v) electrowinning to which is a state-owned company in the Holguin prov- produce a pure nickel cathode or hydrogen reduction to ince of Cuba, Mackiw and Veltman (1980).

Nickel: smelting, producing-Metalpedia

Nickel: smelting; Extraction and purification; Nickel is recovered through extractive metallurgy: it is extracted from its ores by conventional roasting and reduction processes that yield a metal of greater than 75% purity. In many stainless steel applications, 75% pure nickel can be used without further purification, depending on the composition of the impurities.