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The BF slag is characterized by its high titanium content. Although some studies have used the BF slag to recover vanadium [14, 15], the results are still not very satisfactory, and in the typical BF slag, the vanadium concentration is often too low to be used as the feed for vanadium processing. Meanwhile, the molten metal undergoes to a ladle ...
In this work, one kind of vanadium slag should be selected as the benchmark for preparing VS-diff. MnO. Due to the reaction of manganese with vanadium, it is more convincing to use the mass ratio of manganese to vanadium m(MnO)/m(V 2 O 3) as the basis for MnO addition instead of the mass fraction of manganese ω(MnO). Hence, we collected and …
13626 j mater res technol. 2020;9(6):13625–13634 mic reduction using coke at 1250 C was studied by Kim et al. [11]. The product contained over 65% iron and the recovery of iron was more than 85%.
Looking at the merits and associated benefits, some of the top steel-producing countries have adopted or upgraded with a recycling technique of steel slags from time to time for various applications (as shown in Fig. 3), such as for road construction, soil enrichment, cement production, etc. Notably, recycling steel slag for a particular application is associated with …
The investigation showed that treatment of the slag in hydrogen prior to leaching enhanced manganese extraction. Up to 80 pct of the manganese and 50 pct of the iron could be extracted from a silicon-steel slag which had been pretreated in hydrogen at 700 C. Two 4-h leaching stages conducted at ambient temperature with a solution containing ...
Investigations on extraction of manganese from ferromanganese slag, a waste product from a local ferroalloy industry, were carried out using sawdust as a reducing agent. Leaching of …
Addressing the dual challenges of environmental pollution and sustainable energy systems, this study investigates a novel CO 2 sequestration technique via steel slag, a steel production byproduct. It introduces an ultrasonic enhanced leaching process using CH 3 COOH to extract calcium and magnesium from steel slag, facilitating the synthesis of CaCO 3 whiskers.
The dumping of a large amount of steel slag not only wastes metal resources, but pollutes the ecological environment. In this study, a method for recovery of vanadium, titanium, iron, magnesium, and synthesizing anhydrite from steel slag is proposed. The leaching efficiency of V, Ti, Fe, and Mg was 99.42%, 99.36%, 99.89%, and 99.95%, respectively, under a H2SO4 …
The investigation showed that treatment of the slag in hydrogen prior to leaching enhanced manganese extraction. Up to 80 pct of the manganese and 50 pct of the iron could be …
Abstract. Steel slag, a by-product generated during steel production poses a solid waste disposal challenge. The same slag contains valuables such as titanium, nickel, vanadium, iron, aluminum, silica among others. The extracted components can cause productive value …
The extraction of iron from copper smelting slag by carbothermic reduction using coke at 1250 °C was studied by Kim et al. ... One of the Ferro-silico-manganese uses is for molten steel de-oxidation process. ... The maximum metal diameter of 6.85 mm was obtained by the addition of copper smelting slag into manganese ore at 1550 °C. The ...
The extraction of manganese from the tailings slag obtained in the production of refined manganese ferroalloys is studied thermodynamically and experimentally. In such extraction, the slag reacts with metal melts (hot metal, ferromanganese, and ferrosilicomanganese) containing reducing elements (carbon and silicon), with the goal of …
In the present investigation an attempt has been made to recover manganese front ferro-rrranganese slag of ferro-allov plant. Roasting and leaching are the techniques used to recovermanganese. Roasting has been carried out by mixing the slag with CaO and CaCO, at 1200 ='C for 2 hours. The leaching of the roasted mass has been carried out in ferric chloride …
Mild steel is iron containing up to about 0.25% of carbon. The presence of the carbon makes the steel stronger and harder than pure iron. The higher the percentage of carbon, the harder the steel becomes. Mild steel is used for lots of things – nails, wire, car bodies, ship building, girders and bridges amongst others.
1. Introduction. Steel slag is the main solid waste generated in the steel-making process, accounting for 15 to 20% of crude steel output [1].China's crude steel output in 2021 was 1.035 billion tons [2], more than half of the global crude steel output (1.9505 billion tons) [3], and the steel slag output exceeded 120 million tons.In contrast, the comprehensive utilization rate of …
silico-manganese slag, tin slag, nickel sla g and vanadium slag contain 1.3%, 2%, 0.2%, ... Hocheng et al. [113] carried out extraction of copper from EAF steel slag by.
zation of manganese melt, Steel Transl., 20 12, vol. 42, no. 7, pp. 565–568. ... To extract manganese from the tailings slag produced in the furnace smelting of manganese with silicon, a ...
The results obtained with a leaching method to recover manganese from slag shows two efficient ways to valorize manganese from solid fraction (54%) with size particles between 80 and 315 m and/or ...
The results obtained with a. leaching method to recover manganese from slag shows two efficient ways to valorize manganese. from solid fraction (54%) with size particles …
U.S. Bureau of Mines developed a method to recover manganese from open-hearth slags by a lime (CaO) clink ering and ammonium carbamate (NHzC02NH4) leaching process (5-6). Lime …
In order to improve manganese recovery by smelting reduction of manganese ore during less slag blowing at BOF, the effects of sintered manganese ore on reduction behavior have been studied both in ...
Optimization of manganese-rich slag extraction from low-manganese ... China Iron and Steel Research Institute Group 2022 Abstract Manganese-rich slag is a raw material for smelting silicon–manganese alloys using an electric furnace. The blast furnace method is the main method for smelting manganese-rich slag. This method has the problems of a ...
The manganese content of the slag (> 30%) makes it attractive for manganese recovery with hydrometallurgical methods and using the residue for cement. Mohanty et al. used dilute H 2 SO 4 to leach ferromanganese slag at temperatures up to 80 °C at a liquid-to-solid ratio of 10:1 with almost recovery of the manganese [ 44 ].
Mn and Li were selectively extracted from the manganese-rich slag by sulfation roasting−water leaching. The extraction mechanisms of Mn and Li were investigated by means of XRD, TG−DSC, and SEM−EDS. 73.71% Mn and 73.28% Li were leached under optimal experimental conditions: acid concentration of 82 wt.%, acid-to-slag mass ratio of 1.5:1, …
Conventional vanadium (V) extraction methods for vanadium-bearing slags create high chromium content discharge Cr(VI)-containing hazardous wastes. In this article, an ecofriendly magnesiation roasting-acid leaching method is proposed to selectively extract V from the slag. In the near-zero discharge process the generation of Cr(VI) is eliminated. Cr present …
Fig. 2 shows the distribution of vanadium ore in the world. The world's vanadium ore reserves are about 2.4165 × 10 7 t, which represents the portion that meets requirements of current extraction and production. The reserves of vanadium in China, Russia, South Africa and Australia account for 99 % of the world's reserves, and China's vanadium ore reserves are the largest in the world.
The growing demand for manganese due to soaring global steel production in recent years causes rapid depletion of its natural resources. Hilson [4] has explained in detail the ... (sawdust) on the extraction of manganese from the slag have been discussed in the following subsections. 3.1 Influence of particle size
A.V.L.N.S.H. Hariharan et al Journal of Applicable Chemistry, 2019, 8(6):2462-2466 www. joac.info 2463 Earlier workers could extract manganese from various reagents [9-11].The …
Dhmees et al. (2019) used SiO 2 in BFS and CeO 2 in uranium extraction waste liquid to prepare a ceria-coated nano silica particle (SiO 2 @CeO 2) ... Silicon manganese slag is a by-product of alloy steel production. After accumulation, it will not only occupy land but also pollute the environment by metal leaching from slag ...
Extraction of Various Valuable Components. ... Its main components were Ca 4 (PO 4) 2, Ca 2 SiO 4, and some metal elements such as magnesium, iron, and manganese. For acid soil, steel slag phosphate fertilizer was an excellent base fertilizer, which could improve soil fertility. The release of steel slag phosphate fertilizer in soil was ...
