In addition, Na 2 CO 3 was used in the smelting system to improve the recovery of valuable metals. The pyrometallurgical process co-treated various lead- and iron-bearing …
Rich-manganese slag Leaching Solution Li/Mn recovery Filtration Residue Concentrated H. 2. SO. 4. Fig. 2 Flow chart of Co, Ni, Cu, Mn and Li recovery from spent LIBs. Results and Discussion . Effect of parameters on the smelting reduction process Effect of pyrolusite addition . Fig. 3 shows that the effect of pyrolusite addition on the recovery ...
Pyrometallurgical processing of lateritic ore produces huge amounts of ferronickel slags, which may contain valuable metals. This paper describes a novel hydrometallurgical route to recover metals from ferronickel slag samples and reduce liability matters using oxidative acidic leaching. Hydrochloric acid and hydrogen peroxide were employed as leachants. A 24–1 …
In this work, four biochars were employed as fossil-free reducing agents to recover valuable metals from the slag. Reduction experiments were performed in a vertical furnace at temperatures 1250, 1300 and 1350 °C for 60 min in order to investigate the effect of temperature. ... Pyrometallurgical Reduction of Copper Slag with Biochar for Metal ...
Copper slag, a waste solid produced in the copper smelting process, is a high-quality secondary resource with huge output. The recycling and utilization of copper slag is of great interest because it avoids the loss of valuable metals and the threat of harmful metals, and saves a lot of natural resources and energy. This paper firstly reviews the main methods for …
The metal containing solid, such as concentrate, ore, residue, or slag, often undergoes size reduction via crushing and grinding prior to leaching. One example of a leaching process that uses vat leaching is gold cyanidation, the process of extracting gold from low-grade ores.
Keywords Ferronickel slag · Metals recovery · Acidic leaching · Doehlert design Introduction Ferronickel (FeNi) slag is a by-product formed during fer-ronickel alloy production by pyrometallurgical processing of nickel laterite ores []. With the increase in demand for 1 metals and alloys in various industrial sectors, slag produc-
Apparatus for the recovery and recycling of secondary metallurgy slag or residues … since in addition to the material (the slag and the non-tapped liquid metal … » Free Online Chat. Slag Sorting. Slag products from metallurgical operations have to be sorted to recover lost metal. Our slag sorters recover these metals in a dry process ...
Dear Colleagues, Pyrometallurgical processes usually involve complex physical and chemical reactions between slag and molten metal. In the above process, both the properties of slag itself and the interfacial properties between slag and other phases are significant not only for the optimization of smelting process, but also for the improvement of metal product quality.
technique to recover precious metal constituents from obtained slag. The state-of-the-art of metal recovery from slag using the aforementioned methodologies and the merits, and demerits...
Journal of Sustainable Metallurgy - Metallurgical slags are produced at a massive rate of over 750 Mt/year, and carry a thermal energy equivalent to 40 Mt/year of coal. ... Partial recovery of valuable metals from slag is occasionally carried out by crushing, grinding, and metal separation through floatation, magnetic separation or leaching ...
At present, the methods for recovering PGMs from SAC are pyro and/or hydrometallurgical methods [10], [11], [12].The pyrometallurgical method is widely used due to its simple process, high recovery efficiency, and wide range of cheap smelting additives [13], [14].The basic principle is that SAC, metal capture agents, and fluxes are mixed and smelted …
End users are important with respect to copper slag waste-recovery technologies. Traditional devices for granulation of metallurgical slag, such as blast-furnace slag and steel slag, are also suitable for the granulation of copper slag, as proven by Liu [99]. Currently, the waste heat recovery from copper slag remains at the research stage.
The submerged electric arc furnace (SAF) has proven a versatile unit in numerous metallurgical applications for more than a century. Countless innovations have made this furnace type become the most commonly used …
A novel co-modification method between BOF slag and copper slag is proposed for the effective recovery of valuable metals in the metallurgical slags. The co-modification reactions between the Ca-containing phases in BOF slag and fayalite in copper slag are discussed on the basis of thermodynamic analysis, and the co-modification effect on the phase reconstruction …
The state of the art for the recovery of metals from steel industry by-products using hydrometallurgical processes is reviewed. ... BOF secondary-metallurgy slag (BOF SM slag), and (3 ...
Blast furnace slag may be recycled into the steel plant as a secondary source of Fe and as a pre-melted flux. 16 Furthermore, BOF slag can be recycled into the sinter and blast furnace process to recover Fe, and possible Mn, as well as being a source of fluxing compounds. 16 Additionally, Cu slag may contain a weight percent or more of Cu; this ...
Slag is a typical byproduct generated during high-temperature metallurgical processes. It must be treated appropriately to meet the increasingly strict environmental requirements and to realize the economic benefits.1,2 The present topic, "Slag Metallurgy and Metallurgical Waste Recycling," collects eight articles, which demonstrate the progress of slag …
Minerals Engineering, 2002. Slag cleaning is important from both an economical and environmental perspective. Dump slags from copper smelting prove to be a valuable source of base metals, but the abundance of iron in the slag leads to significant amounts of iron reporting to the alloy phase during carbothermic reduction, which poses a significant cost to remove in …
applications in future slag metallurgy. After copper slag is generated, it is essential to characterize its properties in detail for subsequent treatment. In the third article, entitled ''Mineralog-ical Characterization of Copper Slag from Tongling Nonferrous Metals Group China,'' Tiejun Chun et al. investigated the mineralogical ...
Slag produced as a byproduct in industrial processes, contains considerable metals contents, which need to be recovered to avoid environmental contamination. In present review, the types,...
State of the art in metal recovery from non-ferrous slag ... IME Process Metallurgy and Metal Recycling. RWTH Aachen University Prof. Dr.-Ing. Dr. h.c. Bernd Friedrich SMS group
The flotation concentrate was then subjected to bio-leaching in the presence of Acidithiobacillus Ferrooxidans bacterium for the recovery of metal values. The recovery values of about 74.0% of copper, 60.0% nickel, and 33.4% cobalt were achieved in the investigation.
Steel slag is a solid waste of the steel industry, produced during steel production. Three types of slag, namely electric arc furnace (EAF), basic oxygen furnace (BOF), and Linz-Donawitz processed slag (LD-slag) are the steel industry byproducts. That slag comprises precious elements including zinc (Zn), chromium (Cr), iron (Fe), nickel (Ni), silicon (Si), aluminum (Al), …
Keywords: metallurgy, zinc, lead, slag, metal recovery. 1. Introduction ... Various other methods have also been developed to recover metals from slag; however, most of these have only been tested on a laboratory scale. For example, the bioleaching method, despite its high efficiency, has not been applied on an industrial scale due to its long ...
This paper presents the results of research on the possibility to obtain CRMs (REEs) and industrial metals (Zn) from slag as a waste generated as part of zinc and lead extraction processes. Physicochemical methods were used to separate CRM and Zn concentrates: magnetic separation, sintering with NaOH and leaching with selected mineral …
The shape and density of dry in Fig. 11, the CSIRO Dry Slag Granulation (DSG) process 13 Journal of Sustainable Metallurgy Fig. 13 Process flow diagram for SVAI/Primetals Technologies' dry slag granulation system with heat recovery and steam generation [42, 43] (color figure online) Dry granulated Water granulated BF slag BF slag Grounddry ...
The second factor is that metal recovery from slag must be low cost (Wu et al., 2010). ... of base metals and alloys from CS and CSFT through various metallurgical processes improves the economy of mining and metallurgy plants and reduces disposal costs. Download: Download high-res image (222KB) Download: ...
Heat recovery from slag is a topic of research interest since at least the 1980s . Different concepts have been tested and developed since then, but none has reached industrialization yet. ... The abbreviations stand for blast furnace, basic oxygen furnace, electric arc furnace, ladle metallurgy furnace, and hot metal desulfurization. Full size ...
Depending on the treatment capacity, process of anode slime recovery is achieved by two different methods, i.e. pyro-metallurgy and hydrometallurgy. Focusing on high demand of precious metal recovery and large treatment amount, Metalcess offers solution of TBRC smelting + lead distillation & gold metal extraction.
An Overview of Precious Metal Recovery from …
This review article evaluated and summarized various extraction methods including magnetic separation, roasting, pyrometallurgical method, hydrometallurgical and bio hydrometallurgical technique to recover precious …
Steel slag from an electric arc furnace (EAF) may contain significant amounts of oxides of valuable metals. The recovery of iron and other metals from the EAF slag using smelt-reduction process ...
Different strategies of metal recovery such as solvent-extraction, electrowinning, bio/chemical sorption and bio/chemical precipitation from the wastes generated by various ferrous and non-ferrous metallic industries are …
Laboratory level experiments with converter slag collected from Esfahan steel company, Iran demonstrated viable vanadium recovery using sodium carbonate leachant …
Slag produced as a byproduct in industrial processes, contains considerable metals contents, which need to be recovered to avoid environmental contamination. In present review, the …
Pyrometallurgical Reduction of Copper Slag with Biochar for Metal Recovery ... Journal of Sustainable Metallurgy (2024) 10:1170–1187 1171 Graphical Abstract Keywords Thermal treatment · Non-ferrous slag · Non-fossil reductants · Thermodynamic simulations Introduction