A two-step leaching method in combination of acid and ethylene diaminetetraacetic acid disodium (EDTA-Na2) was applied to extract metals such as Cd, Cu, Fe, Pb and Zn from a zinc smelting slag. The results show that the extraction rates of Cd, Cu, Fe and Zn in slag reach 88.3%, 54.1%, 69.6% and 54.7%, respectively, while the extraction rate of Pb is only 0.05% …
Copper concentrates usually contain a number of minor as well as precious elements, the control of which in copper smelting processes is often a key to the quality of the anode copper produced and may also have a bearing on the overall economics of the process. During copper smelting, the copper concentrates are partially oxidized to form slag and …
General properties. Ferrous and non-ferrous smelting processes produce different slags. The smelting of copper, lead and bauxite in non-ferrous smelting, for instance, is designed to remove the iron and silica that often occurs with those ores, and separates them as iron-silicate-based slags. Slag from steel mills in ferrous smelting, on the other hand, is designed to …
There is a slag yard for non-ferrous metal processing and smelting at the top of the hill in the study area. The majority of the slag is deposited around the slag yard, and part of it moves down with the water flow, while the fly ash spreads in all directions in the air, resulting in high levels of Pb and Zn in the atmospheric fallout.
Lead smelting slag / lead smelter slag constitutes both the primary and secondary slags from the lead extraction industry [4], ... kutnohorite magnesian, and pyrite. The major minerals present in zinc slag include ferrous sulfide, feldspar, and iron olivine, as reported by Duan et al. [22] as shown in the X-ray diffraction (XRD) in Fig. 5.
DOI: 10.1016/J.JAS.2014.10.007 Corpus ID: 128628262; Slag remains from the Na Slupi site (Prague, Czech Republic): evidence for early medieval non-ferrous metal smelting @article{Ettler2015SlagRF, title={Slag remains from the Na Slupi site (Prague, Czech Republic): evidence for early medieval non-ferrous metal smelting}, author={Vojtěch Ettler and Zdeněk …
To eliminate the negative effects caused by nonferrous metals when using copper slag in the steelmaking industry, a new scheme was proposed to treat copper slag, involving …
1.. IntroductionElectric smelting is commonly used within the metallurgical industry for recovery of valuable metals from mineral concentrates. Density separation is achieved within the electric furnace that yields a platinum group metals (PGM) containing Ni–Cu–Fe–S matte and slag layer which serves as a sink for oxide and silicate based minerals.
Slag inclusion analyses for studying ferrous alloys employed in French medieval buildings: supply of materials and diffusion of smelting processes. ... *Iron oxide content of indirect process smelting slag (laitier) is very low (<10%). **The exact behaviour was so far not studied in detail. 3.2.
The geopolymer samples were prepared with smelting waste slag of non-ferrous metal as the raw material and water glass as the activator. The effect of modulus of water glass and water binder ratio on the compressive strength was studied. The results show that the strength of the geopolymer activated by water glass with modulus of 1.1 and water binder ratio …
Łukasiewicz Research Network—Institute of Non-Ferrous Metals, Sowińskiego Street 5, 44-100 Gliwice, Poland ... Y.-L. Numerical simulation of coupling multi-physical field in electrical arc furnace for smelting titanium slag. J. Iron Steel Res. Int. 2023, 30, 2194–2209. [Google Scholar] Figure 1. Diagram of data transfer between individual ...
An open-air heap of smelting slag is located atop the mountain, which covers an area of 46,775.40 m 2, total mass of approximately 1261.2 kt, ... s and the micro-ecological soil response in non-ferrous metal smelting areas. Sci. Total Environ., 865 (2023), Article 161283. View PDF View article View in Scopus Google Scholar.
Stirred tank reactor (STR) leaching of non-ferrous metals from copper smelting slag was conducted using biogenic Fe3+ solution containing H2SO4. The solution was initially obtained through biooxidation of FeS2+S° by using a moderately thermophilic microbial culture such as Sulfobacillus thermosulfidooxidans at 45°C and was applied as lixiviant in STR leaching …
Pyrometallurgy is the primary technique for the production of many nonferrous metals such as copper, lead, and zinc. The phase equilibrium information of smelting slags plays an important role in the efficient extraction of metals and energy consumption. The experimental technologies used in phase equilibrium studies are compared. The presentation and applications of the …
The ferrochrome smelting slag processing program integrates crushing, screening, jigging and dewatering processes. Firstly, coarse crushing is used to crush large pieces of ferrochrome smelting slag to get ferrochrome smelting …
a large amount of iron is contained in a waste non-ferrous slag discharged from both a pyrometallurgical process for smelting or refining concentrated copper and concentrated lead and a pyrometallurgical process for re-treating a residue discharged from a hydrometallurgical process of zinc. It is known that the content of iron to be recovered varies depending on the …
The TiO 2 content of the slag exceeded even that of titanium slag produced through vanadium titanomagnetite (VTM) smelting. Additionally, the higher ferrous content of the slag would serve as a supplementary heat source (FeO ... From the SEM image of RM smelting slag (shown in Fig. 14), three mineral phases of ferrouspseudobrookite (light gray ...
This case study was of abandoned iron slag piles and their surrounding areas in Hechi City, Guangxi Province, known as China's hub for non-ferrous metals. Hechi has rich mineral resources and intense mining and smelting activities, which contribute to severe heavy metal pollution (Tao et al., 2020).
The smelting reduction process was a process in which the waste slag was melted in a high-frequency induction furnace to obtain molten iron (Fig. 3), that is, the "FeO" in NMWS was reduced to metallic iron at high temperature (1400–1450 °C) …
ticetheliquidussurfaceoftheso-called fayalite slag obtained at iron saturation (i.e. strongly reductive con-ditions) for both reductive and oxidative conditions. This was despite the fact that most non-ferrous smelt-ing processes and especially those of copper smelting and converting are carried out at intermediate oxygen partial pressure.
In this paper the work carried out by the authors in quantifying through an original physical model the phase relations, liquidus surface, liquidus regions, behavior of solid phases and the effect...
TBRC is a rotary tiltable furnace for smelting anode slime,WEEE,non-ferrous metal smelting slag and setting slurry to recover gold, silver and other precious metal. It can also treat copper concentrate and secondary material like scrap copper, scrape lead, lead slag, lead dust,etc.
The slag fuming furnaces are the major bottleneck in the BHAS zinc production flowsheet. Intensification of the fuming process could significantly reduce this production restriction._x000D_ Oxygen enrichment was proven to be a means of intensifying the fuming process. This procedure resulted in higher slag bath temperatures, and development work was undertaken towards …
In total, 35 elements were detected in the samples using electron probe microanalysis. After the treatment, 89.4% of the valuable, toxic, and trace elements gathered in the newly formed matte after maintaining the copper …
This is because the addition of MnO increased the asymmetry of Si–O bonds, which would be beneficial to the spreading of molten slag on refractory, thus exacerbating the slag corrosion. In the non-ferrous smelting system, with increasing the MnO content from 0 to 3%, the melting point of CaO–SiO 2 –MgO–Al 2 O 3 –Cr 2 O 3 slag ...
However, lead slag only accounts for approximately 5% of the raw ingredients. In a different study, researchers used the lead and zinc smelting slag as the ferrous raw material to produce Portland cement, entirely replacing iron ore (Li et al., 2004). The results showed that the burnability of a mixture of 6% slag had obviously improved.
SIPS 2024 by FLOGEN Stars Outreach hosts the Stelter International Symposium on Sustainable Non-ferrous Smelting and Hydro/Electrochemical Processing. Topics include lower grade of concentrates trend, the very high-arsenic bearing copper ore challenge, final slag issues, granulation methods, slag cleaning options, advanced control on smelting/converting, …