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 …
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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...
WhatsApp: +86 18221755073
An efficient approach to utilize copper smelting slag: Separating nonferrous metals and reducing iron oxide at high temperature. Author links ... Jiang et al., 2020), transforms the ferrous oxide in the copper slag into magnetite. A beneficiation method is then used to separate the magnetite. The reduction method produces ferroalloys by ...
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
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, …
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
The extraction and smelting of metal minerals cause serious heavy metal pollution in agricultural soils, especially in Southwest China, which is rich in mineral resources, and the total number of nonferrous metal mines accounts for about 20% of the country [43], [76].In recent years, wastewater, waste gas, and slag produced during the smelting process of nonferrous …
WhatsApp: +86 18221755073
Transition from rutile to ferrouspseudobrookite of slag type played the key role. FeO in slag also purified molten iron during smelting and upgraded the iron nugget. Industrial pure iron and Ti …
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
The gases from the Flash Smelting Furnace (FSF) and the Slag Cleaning Electric Furnace (SCEF) tapping operations are conducted through exhaust hoods located in the launders, to a baghouse filter in order to meet the current emission limits established in Atlantic Copper's Environmental Permit (EP). This off-gas stream contains 20.9% O2 at environment …
WhatsApp: +86 18221755073
The arsenic (As) vitrification in copper smelting slag derived from the FeO−SiO 2 −Fe 2 O 3 −B 2 O 3 −CaO− Al 2 O 3 −(MgO) system was studied. The vitrification mechanism of As was systematically investigated by XRD, SEM, FTIR and XPS analysis.
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
The slag is then dumped and subsequently broken in small pieces. [57] ABSTRACT A process for controlled slow cooling of non-ferrous smelting slags, such as copper slags, for the recovery of the non-ferrous metals contained therein by subsequent crushing, milling and ?otation operations is disclosed. The process comprises the steps of pouring ...
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
The emissions and stockpiles of non-ferrous smelting slag are massive, with the annual emissions of smelting slag exceeding 30 million tons. However, the utilization rate of non-ferrous smelting slag is low, and the annual emissions of smelting slag are much greater than the utilization amount, resulting in an exponential increase in its stockpile.
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
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 ...
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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.
WhatsApp: +86 18221755073
The major in-situ remediation technologies to prevent leaching of HM from non-ferrous metal tailings and smelting slag heap include microbial geochemical in-situ solidification (Liu et al., 2019a), adsorption of metals, fixation of non-metallic minerals (Bertocchi et al., 2006), anti-seepage technology, in situ mineralization based on ...
WhatsApp: +86 18221755073
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) …
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
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% …
WhatsApp: +86 18221755073
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).
WhatsApp: +86 18221755073
Slags are by-products generated by the pyrometallurgical processing of both ferrous and non-ferrous metal ores and secondary resources (recycling). They are formed during smelting from the reaction of gangue minerals in the furnace feed and fluxes and, possibly, …
WhatsApp: +86 18221755073
Analytical study on heavy metal output fluxes and source apportionment of a non-ferrous smelter in southwest China ... The mean total HM concentrations in the smelting slag are Zn: 41,200 mg/kg > Pb: 18,800 mg/kg > Cu: 3180 mg/kg > As: 3600 mg/kg > Cr: 1950 mg/kg > Cd: 56 mg/kg. The total amount of Zn and Pb in the discarded smelting slag ...
WhatsApp: +86 18221755073
0086-21-58386256
Our office time Mon - Sat 10.00AM - 7.00PM Sunday CLOSED
Copyright © 2024.Con All rights reserved.sitemap