DOI: 10.1016/j.jmrt.2023.01.186 Corpus ID: 256563836; Efficient separation of iron elements from steel slag based on magnetic separation process @article{Liu2023EfficientSO, title={Efficient separation of iron elements from steel slag based on magnetic separation process}, author={Xin Liu and Da-zhi Wang and Zhi-wei …
Oolitic hematite possesses the characteristics of large resource reserves, low iron grade, fine embedded particle size and complex mineral composition, which is difficult to be used efficiently through traditional beneficiation process. In this work, a new technology of microwave fluidization pretreatment (MFP) was proposed to strengthen …
In recent years, the pretreatment technology for CS to reduce iron content to prepare light-colored glass-ceramics have been developed. This pretreatment not …
The results obtained from the work on a concept of a recycling process for NdFeB magnets to recover rare earth elements for remanufacturing similar magnets are presented.
Studies focusing on the removal of iron-bearing minerals include magnetic/gravimetric separation [24-26], reductive roasting followed by magnetic separation [17,22, 27], froth flotation [28][29 ...
It was determined that the optimum value ranges for the particle size, magnetic separation distance and rotating frequency were 0.15 mm-0.3 mm, 10 mm-12 mm, 40 Hz～60Hz, respectively; using the ...
The vanadium slag for this study was sourced from Desheng Iron and Steel Group Co., Ltd., Sichuan, China. Vanadium tailings were produced using oxygen pressure leaching method [18].The detailed chemical composition of both the vanadium slag and vanadium tailings are provided in Table 1, and the X-ray diffraction patterns are presented in Fig. 1. ...
This review article evaluated and summarized various extraction methods including magnetic separation, roasting, pyrometallurgical method, hydrometallurgical and bio hydrometallurgical technique to recover …
3 calculated to be 1.73. Table 1 Chemical analysis of the copper smelting slag Component Cu Fe (Total) SiO2 S Al2O3 CaO MgO Zn Fe3O4 Content(wt.%) 17.82 33.06 19.13 8.07 2.96 2.12 1.95 1.83 12.9
NKK and its group companies have developed a new technology for producing fine concrete aggregate from granulated BF slag. Molten BF slag is tapped from a blast …
Semantic Scholar extracted view of "The pretreatment of non-ferrous metallurgical waste slag and its research progress in the preparation of glass-ceramics" by Xiaoming Liu et al. ... Machine learning-based study on the mechanical properties and embankment settlement prediction model of nickel–iron slag modified soil. Pingbao Yin …
By using DR followed by a magnetic separation process for iron recovery from copper slag, Yang [10] obtained iron powder of 92.05% iron content with an iron recovery rate of 81.01%, and Wang [11 ...
Blast Furnace Slag (BFS) is a by-product of iron making with a potential to be used in different applications. In this research, BFS is used to investigate the phosphate removal ability in wastewater.
From the results, it can be seen that the proportions of iron phases in steel slag are obviously reduced after pretreatment. The proportion of metallic iron in steel slag is decreased from 2.38% to 1.18% by preliminary magnetic separation, and both the metallic iron proportion and total content of iron phases in steel slag are decreased by ...
The separation of iron nuggets from slag appeared to be improved by adding Na 2 CO 3, thereby enhancing the overall reduction process. The production of sodium oxide from the decomposition of Na …
NdFeB magnet scraps contain large amounts of iron, which poses challenges in recycling and greatly hinders the recovery of rare earths through direct hydrometallurgical treatment. To address this issue, we conducted tests using a flash furnace to explore the low-temperature reduction behavior of NdFeB magnet scraps …
In this experiment, dry magnetic separation and wet weak magnetic separation of steel slag were separately performed, and the reasonable process …
The blast furnace slag and steelmaking slag generated in the iron and steel making processes in Japan amount to approximately 300 and 120 kg/t-steel, respectively. ... Hot metal pretreatment utilizing recycled slag and dust at the kakogawa works. Kobe Steel Eng. Rep. ... Separation and Purification Technology, Volume 250, 2020, Article …
Deep dephosphorization of high‑phosphorus oolitic iron ore (HPOIO) is extremely difficult because of its refractory characteristics. A new approach for simultaneous iron recovery and dephosphorization from HPOIO by oxidation roasting–gas-based reduction (ORGR) and magnetic separation process was developed.The …
Iron recovery from a lead slag in Henan province was carried out with the technique of coal-based direct reduction followed by magnetic separation. Scanning electron microscopy (SEM) was used to investigate the transformation of iron-containing minerals and the particle size of metallic iron generated by coal reduction. The results …
110 3 Technology of Slag Formation Control in Electric Furnace Smelting … 1600 °C to ensure the effective separation of molten iron from slag [12, 13], thus consuming nearly 4000 kW·h/t–ferronickel of electric energy during the smelting process [14, 15].
To reduce the production of steel slag and increase the resource utilization process of steel slag, the Iron and Steel Institute of Japan (ISIJ) has been researching new ways of steel slag recycling to increase the utilization rate of steel slag or developing …
Cu slag is used for nonferrous metal and iron recycling, rock wool preparation. Abstract. Over 50 million tons of copper slag are produced worldwide …
40 million tons of iron/steel slag is produced in Japan every year. 2.2 Characteristics of iron/steel slag Iron/steel slag is composed mainly of CaO and SiO 2. Further, BF slag contains Al 2 O 3, MgO, S, etc., and steelmaking slag contains iron oxides (FeO, Fe 2 O 3), MnO, P 2 O 5, etc. in addition to the BF slag components.
This paper proposes a pyrometallurgical recycling method for end-of-life NdFeB magnets by oxidizing them in air and subsequently smelting them. The smelting process enabled the recovery of rare earth elements (REEs), producing a new reach concentrate separating the iron as a metallic phase. From the products of smelting, the …
In order to develop a new recycling process of steelmaking slag, reduction of (Fe tO) and (P 2O 5) in steel-making slag at high temperature have been investigated. In this work, …
China's copper resources are characterized by low grade and complex composition. A large amount of copper smelting slag (CSS) containing valuable elements such as copper and iron is produced through smelting. With the increasing shortage of copper resources, the full recovery of valuable elements in CSS plays an important part …
separated from iron through gravity separation. Finally, clean iron oxide, metallic copper and pure sili-con dioxide can be obtained from copper slag. Keywords: copper slag, activated reduction, directional oxidation, carbonation. Introduction Matte smelting is the main method for copper production, and about 2 tons of slag bearing 30% ∼ 40% ...
In recent years, common applications of steel slag have been road construction, concrete aggregate, cement production, and landfill materials [2, 3,5,6]. 80,000 tons of steel slag was used in the ...
3. Steelmaking Slag Processing Technology The iron/steel slag processing flow is schematically shown in Fig. 2. Steelmaking slag is subjected to the following four process-es: ① solidify and cooling of the hot molten slag, ② crushing and magnetic separation treatment of the slag to recover the metal iron,