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Synchronous extractions of nickel, copper, and cobalt by selective chlorinating roasting and water leaching to low-grade nickel-copper matte[J]. Separation and Purification Technology, 2018, 195 149-162. 9. Fuhui Cui, Wenning Mu*, Shuai Wang, Qian Xu


A generalized Copper Cliff Smelter Complex flowsheet is shown in Figure 1.Iron sulfide and gangue contained in the nickel concentrate are rejected in the smelting-converting process. The molten product, typically containing 50% Ni, 25% CU and 22% s, is cast at about 1000 ºC, into floor moulds and allowed to slowly cool for four days.


Synchronous extractions of nickel, copper, and cobalt by selective chlorinating roasting and water leaching to low–grade nickel–copper matte. Separation and Purification Technology 195, 149 ...


The copper-nickel separation technology is divided into copper-nickel mixed concentrate separation and high-ice nickel separation technology. Generally, the former is used for ores with coarse mineral size and not closely interwoven with each other, while the latter is used for ores with fine mineral size and very dense interwoven with each other.


Aiming to increase the recovery of cobalt and precious metals from Ni-Cu sulfide ores, the low nickel matte is treated directly by hydrometallurgical process instead of converting. Because of the weaker affinity of Fe, Co and Ni for sulfur than Cu, the sulfides of Fe, Co and Ni may be decomposed in sulfuric acid solution, while Cu 2 S and inert precious metals cannot …


The iron sulfide along with the associated nonferrous sulfide minerals is comminuted to at least about 100% 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.


Abstract. The behavior of nickel sulfide (Ni 3 S 2), copper sulfide (Cu 2 S), and their mixture (Ni 3 S 2: Cu 2 S = 1 : 1) is studied under the leaching conditions in sulfuric acid solutions. The effects of the acid concentration, the temperature, and the leaching time on the dissolution kinetics and the phase compositions of the leaching residues of nickel sulfide Ni 3 S 2 and the …


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 ...


Matte of this general composition is encountered more frequently than the others in this series, due to the natural association of nickel and copper sulphide minerals in many parts of the world. Usually, a flotation separation may be made to provide a copper concentrate low in nickel, and the nickel concentrate then contains some copper.


Extraction, separation and recovery of Nickel, cobalt and copper flotation concentrate containing the sulfides of Nickel, cobalt and copper, characterized in that it comprises the following stages: obtaining a suspension containing the specified fleet acid leaching at atmospheric pressure, resulting in the formation of raw slurry to leaching ...


optimum conditions for the flotation of nickel, copper and cobalt from a nickel-copper sulphide ore. The parameters investigated include collector dosage, percentage solids, depressant dosage and pH. The effects of these parameters at three different levels on the recovery of Ni, Cu and Co were investigated using an L 9 Taguchi orthogonal array.


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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.


70% of total cobalt but only 30% of total copper in rocks occur in silicate phases and thus indicate an early separation of copper from cobalt and nickel. Unusually high non-sulphide copper in barren bedded cherts implies availability of Cu-rich solution prior to their lithification.


Abstract: Effect of butyl xanthate, butylamine aerofloat and thiamine esters used alone and in combination on flotation of low-grade nickel sulphide ore were studied. The results showed that the nickel grade of rougher concentrate was up to 3% when butyl xanthate or thiamine esters was used alone for flotation of nickel sulphide ore, but recovery was low; …


About 100,000 tonnes of nickel per annum is produced by the leaching of laterite ores. The laterite ores that are amenable to leaching are low in …


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 ...


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


Abstract Controlled sulphide precipitation was examined in this study for the recovery of copper and nickel–cobalt concentrates from liquors originating from leaching manganese deep ocean nodules in FeSO4–H2SO4–H2O solutions. The metal ions studied include Co2+, Cu2+, Fe2+, Ni2+, Mn2+ and Zn2+. Promising results were obtained when copper and nickel–cobalt …


Controlled sulphide precipitation was examined in this study for the recovery of copper and nickel–cobalt concentrates from liquors originating from leaching manganese deep ocean nodules in FeSO 4 –H 2 SO 4 –H 2 O solutions. The metal ions studied include Co 2+, Cu 2+, Fe 2+, Ni 2+, Mn 2+ and Zn 2+.Promising results were obtained when copper and nickel–cobalt …


Disseminated nickel and nickel-copper ores are widely distributed around the world and can be found in most of the world's nickel sulphide deposits.[1,7,8] Komatiite-hosted nickel-copper deposits contain some of the world's most economically significant disseminated ore deposits.[7,8] These


A basic principle of many processes for extracting copper and nickel from sulphide ores is to overlay the molten ore or matte with a lime–silica–iron oxide slag and blow with air or oxygen. Some of the iron present in the ore oxidises and, as a result, partitions to the slag phase, while some of the sulphur is carried off as sulphur dioxide.


Sulfide ores are mostly smelted by matte-making. Different pyrometallurgical processes are used to produce low-nickel matte from various nickel sulfide ores. Then low-nickel matte is converted into high matte, i.e. sulfide and copper sulfide alloys. High matte is then refined by different methods in a refinery to produce different nickel products.


laterite compared to sulfide ores – leading to a historical preference for sulfide ores. To meet future demand for nickel, however, there is an increasing proportion of nickel being mined from laterite ores. This leads to an important issue in terms of the environmental costs of nickel – as laterite nickel increases, the


In this paper, the data on the joint processing of oxidized nickel ores and sulfide copper ores for copper-nickel matte and silicate slag are presented. Structure and phase composition of the ...


Nickel, which is commonly hosted in sulfide ores and laterite, is widely used in both civil and military endeavors [].Sulfide ore serves as a major source of native nickel due to the low extraction cost and facile metallurgical process [].Ni-rich sulfide ore has been exhausted by endless mining resulting from the substantial demand for and consumption of nickel in decades.


The Copper-Nickel Sulfide Ores used in this study were obtained from Xinjiang, China. The contents of these samples were 96.23% for chalcopyrite, 90.59% for serpentine and 94.44% for talc ...


1 Types of copper sulfide ore (1) Single copper mineral Its ore characteristic is relatively simple, and the only useful component that can be recycled is copper. The gangue minerals are mainly quartz, carbonate and silicate. (2) Copper-sulfur ore Called copper-bearing pyrite. In addition to copper minerals, iron sulfide can be recovered, and the main mineral of …