Density and Surface Tension of Slags from the Joint Smelting …
The density and surface tension of homogeneous molten slags from the joint smelting of nickel saprolite and copper pyrite ores have been experimentally assessed (maximum bubble pressure method) using model samples of iron-containing slage …
A comprehensive review on the recovery of copper values …
The global production of copper slag from the smelters is about 21.1 Million Tonnes (MT), the copper content of which lies in the range of 0.5–2% [ 122 ]. Significant …
Co-reduction of Copper Smelting Slag and Nickel Laterite …
In this study, a new technique was proposed for the economical and environmentally friendly recovery of valuable metals from copper smelting slag while simultaneously upgrading nickel laterite through a co-reduction followed by wet magnetic separation process. Copper slag with a high FeO content can decrease the liquidus …
Sustainable and Comprehensive Utilization of Copper Slag: …
Metal Losses to the Slag in Smelting and Converting. 80% of the copper produced from ores worldwide originates from sulfide ores. The copper concentrate which results from flotation of the ore is typically smelted and converted to blister copper [].During smelting S and Fe are oxidized, where SiO 2 is added to form a liquid ferric or ferrous …
The Phase Transition and Element Distribution of Copper Smelting Slag
Sulfidation treatment of copper smelting slag. In the sulfidation experiment, the particle size of the synthesized slag was controlled below 80 mesh (178 µm).The mixture of CaSO 4 and anthracite was pelletized at a pressure of 1.0 MPa in a Ø 4 mm pressing tool, and the weight of every pellet was roughly controlled to be 0.04 g. …
Efficient Synchronous Extraction of Nickel, Copper, and …
Low‒nickel matte as the main intermediate product of nickel sulfide ore in traditional pyrometallurgical smelting, during this process, the valuable metals Ni, Cu, and Co have been enriched 6,7 ...
Viscosity of slags from joint smelting of oxidized nickel …
Reducing the basicity from 0.7 (iron-containing slag) to 0.6 (iron-free slag) increase viscous flow activation energy s from 204 to 236 kJ/mol. To maintain optimal slag viscosity, joint smelting of oxidized nickel and sulfide copper ores should be carried out at a temperature not lower than 1400 °C.
Recovery of Metals from Copper Smelting Slag Using Coke …
Figure 1a indicates that the concentrations of copper, nickel, and arsenic in copper slag increase when the reduction has proceeded to some extent, due to the preferential reduction of FeO 1.5 to FeO. The calculated total mass of matte and alloy decrease and increase, respectively, with an increasing reduction degree, as shown in …
Environmental and Socioeconomic Impact of Copper Slag …
Copper slag is generated when copper and nickel ores are recovered from their parent ores using a pyrometallurgical process, and these ores usually contain other elements which include iron ...
Characterization of copper slag for beneficiation of iron and copper …
1. Introduction. The mining and mineral processing sector plays a major role in the economy of Botswana. The depletion of high grade primary sources of metallic ores [1], has led to the closure of most mines e.g. BCL, Tati Nickel, Lerala Mine, African Copper Mines and Discovery Metals, due to the huge loses encountered in attempting to exploit …
Efficient Synchronous Extraction of Nickel, Copper, and …
In the traditional smelt route, the low‒nickel matte are further converter blowing to reduce the iron content and other impurities forming the high nickel‒copper …
(PDF) Low grade ores – Smelt, leach or concentrate?
the direct smelting of copper ore has been considered. The compo-sition assumed for the copper ore was chalcocite (2.5%), pyrite ... ent in many Australian nickel ores would result in high slag.
Recovery of Valuable Metals from Nickel Smelting Slag …
Abstract. Nickel smelting slag contains valuable metals including nickel and copper. Failure to recycle these metals wastes resources, and disposal of nickel …
Recovery of Valuable Metals from Nickel Smelting Slag …
Nickel smelting slag contains valuable metals including nickel and copper. Failure to recycle these metals wastes resources, and disposal of nickel slag in stockpiles results in environmental pollution. Nickel slag recycling is important, and metals can be recovered from slag by flotation. However, considering the complex forms in …
Reduction–Sulfurization Smelting Process of Waste …
Reduction–sulfurization smelting is an effective method for treating solid hazardous waste and recovering valuable components from them. In this work, a waste hydrogenation catalyst (WHC), an automotive exhaust purifier waste catalyst (AEPWC), a vulcanizer, and laterite nickel ore were mixed, and the reduction smelting behavior of …
12.3 Primary Copper Smelting
12.3 Primary Copper Smelting 12.3.1 General1 Copper ore is produced in 13 states. In 1989, Arizona produced 60 percent of the total U. S. ore. Fourteen domestic mines accounted for more than 95 percent of the 1.45 megagrams (Mg) (1.6 millon tons) of ore produced in 1991. Copper is produced in the U. S. primarily by pyrometallurgical …
Co-reduction of Copper Smelting Slag and Nickel Laterite …
Nickel laterite is a complex and refractory ore, ... The chemical compositions of the copper smelting slag and nickel laterite are shown in Supplemental Table 1. As is shown, the MgO content of nickel laterite was as high as 15.8%. However, the presence of MgO raises the slag liquidus temperature during the reduction process. ...
Modeling of Exchange Interactions in Melts Formed During Joint Smelting
A sufficient matte separation factor (5.5 for nickel, 5.7 for cobalt, and 4.5 for copper) and reduced desulfurization (≈0%) confirm the selected optimal conditions of joint ore-cinder smelting. The applied methodology of theoretical modeling and the obtained results can be used in the development of technologies for processing mineral and ...
(PDF) Nickel Laterite Smelting Processes and Some
The process for laterites is very similar to that in copper smelting. Oxide-type nickel ores are . ... Ferro-nickel smelting generates too much slag. More than 95% of the charge material to furnaces.
16. Flotation of Nickel and Nickel–Copper Ores
The iron-to-magnesium ratio in the nickel concentrates destined for smelting is a key parameter that influences smelting temperature and slag viscosity (Mayhew et al. 2013;Senior and Thomas 2005 ...
Copper Smelting
The matte, about 45 to 55 percent copper and the remainder iron silicate slag, is formed in a very fast, almost instantaneous reaction; hence the name "flash smelting.". The matte sinks through the …
(PDF) Composition and structure of products of the joint smelting …
PDF | 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... | Find, read and cite all the research you ...
Sulfide Smelting | SpringerLink
For example, copper is collected into matte in lead smelting, cobalt into speiss in copper smelting, and sulfur into slag in iron smelting. High-temperature operation helps quick partitioning of selected elements in different phases but complete separation cannot be achieved. ... The pentlandite [(NiFe) 9 S 8], a nickel ore …
Copper processing
Copper processing - Roasting, Smelting, 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 …
Extraction and separation of copper and iron from copper …
CSS is a kind of solid waste slag produced in the process of pyrometallurgical copper smelting (Piatak et al., 2015; Sarfo et al., 2017). The typical …
Matte | Smelting, Refining, Alloying | Britannica
matte smelting. matte, crude mixture of molten sulfides formed as an intermediate product of the smelting of sulfide ores of metals, especially copper, nickel, and lead. Instead of being smelted directly to metal, copper ores are usually smelted to matte, preferably containing 40–45 percent copper along with iron and sulfur, which is then ...
Behavior of Copper and Sulfur During High-Temperature
Oxidized nickel ores are processed through the solid-phase (at a temperature of about 700 °C) sulfidization of lateritic ores with melted sulfur in a tube furnace [1, 2], the sulfidization of ferronickel melt with elemental sulfur at a temperature of 1500 °C, and the sulfidization of oxides with pyrite during matte smelting of oxidized ...
(PDF) Behavior of platinum in the system of the matte-slag …
Copper-nickel sulfide ores are one of the main sources of platinum. One of the ways to extract. precious metals from such ore s involves melting of a concentrate in electric ore smelting furnaces ...
Sulfide Ore
Oxides form slag that is skimmed off and is processed in an electric furnace prior to discard to recover nickel. The discarded slag typically contains 0.3–0.4% Ni, 0.2% Cu, 39% Fe, and 35% SiO 2 (Ray et al., 2014). In some nickel ore smelting, slag formation is complex because of the presence of MgO in various silicate minerals.
Research on Environment Safety of the Laterite Nickel Ore Smelting
The properties of environmental safety about Ferro- Nickel slag are researched,including corrosivity,extraction toxicity( ET),thermal stability,and radioactivity. Corrosive,radioactive and ET are less than the limited value of national standard; The properties of Ferro- Nickel is stable when it is heated Less than 600 degrees Celsius; The elements of Ferro- …