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- …
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 …
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 …
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.
The cold crystallization kinetics of the glass-crystal composition (90.3 vol% of glass) made of slag from the joint smelting of oxidized nickel and sulfide copper ores were studied in the ...
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 …
Unlike the other processing routes shown in Fig. 5, the direct ore smelting route is not used commercially for the production of copper or nickel metal (although ferronickel is produced by smelting nickel laterite ores without any prior concentration). These various processing routes are discussed in more detail later. 3.1. Copper and …
Viscosity of slags from joint smelting of oxidized nickel and sulfide copper ores. November 2023. Transactions of Nonferrous Metals Society of China 33 (10):3168 …
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-nickel sulfide ores are one of the main sources of platinum. One of the ways to extract precious metals from such ores involves melting of a concentrate in electric ore smelting furnaces,
Reducing the basicity from 0.7 (iron-containing slag) to 0.6 (iron-free slag) increases viscous flow activation energy from 204 to 236 kJ/mol. To maintain optimal …
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 …
Lead, lead-zinc, and zinc slag are formed during pyrometallurgical treatment of the sulfide ores. This process is similar to the production of copper and nickel slag, including roasting, smelting, and conversion. Phosphorous slag is a by-product of the elemental phosphorus refining process.
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. …
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 …
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 …
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 …
The cold crystallization kinetics of the glass-crystal composition (90.3 vol% of glass) made of slag from the joint smelting of oxidized nickel and sulfide copper ores were studied in the ...
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 ...
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 ...
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 …
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. ...
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 ...
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 ...
In this work, we analyse and structure the information on the distribution of noble metals during pyrometallurgical processing of copper-sulphide and copper-nickel concentrates, available in domestic and foreign scientific sources. The data on the influence of oxygen partial pressure in the system and, consequently, the matte composition, …
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.
slag from the joint smelting of oxidized nickel and sulde copper ores. The aim of the work is to estimate the kinetic parameters and to elucidate the mechanism of the process. Experimental Materials The slag was elaborated by laboratory smelting at 1400 °C in a graphite crucible of the charge composed of oxidized
1. Introduction. With the increasing consumption of high grade sulfide nickel resources due to the rapid growth of stainless-steel industry, nickel laterite (NL) ore, accounting for over 70% of the land-based Ni reserves, has been become a major raw material for Ni production [1], [2].However, NL ore, consisting of complex minerals, is …