Life cycle assessment of melting reduction treatment for iron and steel waste slag: A case study in Tangshan, China. YanlongLi, MeiyuLv, RundongLi, …

Ferronickel slag is a by-product of nickel production. The discharge of ferronickel slag has gradually increased with the expansion of the scale of smelting for ferronickel alloys in China, which is a huge challenge for environmental protection. Ferronickel slag recycling has good economic and social benefits. In this perspective, in …

Slag was processed by 28 companies servicing active iron and steel facilities or reprocessing old slag piles at about 124 processing plants, including some iron and …

Development history of steel slag utilization in China. China began to recycle steel slag in the 1970s (Shan, 2000). According to Guo et al. (2018), from the 1950s to the present, the production of steel slag has gone through a disposal stage, a rough development stage and a comprehensive utilization stage (Guo et al., 2018). …

Extraction difficulty and high recycling costs affect the recycling of copper resources. In China, Shenzhen produced 25000 tons of copper sludge in 2009 alone (Yao, 2010), ... which is sold as a final product. The slag produced in the smelting process is directed to the flotation process, and the residual copper-bearing material is again ...

Considering the synergistic carbon/pollution reduction and resource utilization, this study proposes recycling of manganese desulfurization slag to prepare low-temperature NH 3-SCR catalyst based on solid-state ion-exchange.The desulfurization slag was hydrothermally treated to be support under mild conditions, with the parent manganese …

China is the largest iron- and steelmaking slag producer in the world, and intensive efforts have been made during last decades for …

During the blast furnace process limestone (CaCO 3) flux is added, to collect the waste products produced: silica (SiO 2), phosphorus pentoxide (P 2 O 5), calcium sulfide (CaS), magnesia (MgO) and alumina (Al 2 O 3).This forms blast furnace (BF) slag, which floats on top of the surface of the hot metal (Peters, 1982).The blast furnace is …

With the rapid development of China's steel industry, rising rates of steel production have led to the increase of steel slag emissions. Steel slag is a kind of industrial solid waste produced in the process of iron and steel smelting, and its emission is about 15 wt%–20 wt% of crude steel output [].According to the data released by the World Iron …

Large iron and steel enterprises in the US, Japan, Europe, Germany, and China have adopted ways to recycle waste steel from steel slag for reducing the cost of the raw material (Bo et al., 2011 ...

countries to decrease slag emission or promote slag recyc-ling. Here, we review fundamental research as well as cur-rent technologies for recycling ironmaking and steelmaking slags in Japan and China as representative examples. Experi-ences from both countries can be used as a point of reference for other countries. 2.

In this paper, we reviewed steel slag treatment, recycling, and management in China. Although China's annual slag production reached more than 100 million tons, its utilization rate is only 29.5%.

In this paper, we reviewed steel slag treatment, recycling, and management in China. Although China's annual slag production reached more than 100 million tons, its …

China (2016) X. Huang et al. On the use of blast furnace slag and steel slag in the preparation of green artificial reef concrete. Constr. Build. Mater. Elsevier (2016) H.M. Jafer et al. ... The recycling effect of BOF slag in the portland cement properties. Resources, Conservation and Recycling, Volume 127, 2017, pp. 216-220.

Steel slag can be disposed in road construction, cement production, internal recycling, civil engineering, and agriculture in Japan, Europe, the United States, and China [2][3] [4] [5][6]. It is ...

The increasing global and local imbalances in slag production, slag recovery and recycling have led to a rise in global trade flows. According to the World Steel Association, about …

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 …

Technological innovations in slag recycling are crucial for the steel industries in Japan and China. ... and C.K. Gao, Research on new seawater desalination technology using waste heat recycled ...

CaO-containing carbon pellets (CCCP) was prepared by mixing carbide slag (Ca(OH) 2) and powdered char to produce CaC 2, achieving the recycling of carbide slag during CaC 2 production process. The thermal strength of CCCP was the focus of most attention when employing arc furnaces as reactors for CaC 2 production in industry. To …

Steel slag recycling is a serious problem in China. The volume of steel slag is growing rapidly because the output of steel is steadily increasing; however, slag's …

Full size image. The copper content of copper slag is 0.5–4.5% or even higher, which is much higher than the 0.2–0.3% mining grade of copper mines in China. The total iron content in copper slag is about 40%, which is significantly higher than the mineable grade of iron ore in China (TFe > 27%) [ 10 ].

DOI: 10.1016/J.RESCONREC.2018.08.002 Corpus ID: 116051141; Constraints and opportunities for the recycling of growing ferronickel slag in China @article{Xi2018ConstraintsAO, title={Constraints and opportunities for the recycling of growing ferronickel slag in China}, author={Beidou Xi and Renfei Li and Xinyu Zhao …

According to the price provided by Lantian Waste Ltd. (Changchun, China), the total cost for disposing 1 ton of smelting slag is approximately US$ 1304.3, which could be saved by recycling Cu/Zn ...

1. Introduction. Slag examined in this study is defined as the predominantly silicate and oxide by-product derived from smelting metallic ore. The two main types of slag included in this discussion are from the primary production of ferrous ores, from iron and steel manufacturing, and from non-ferrous ores, from the recovery of base metals and …

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, …

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Until now, the cumulative amount of tungsten slag reached 1 million tons, what is worse, more than 70 thousand tons of tungsten slag were produced every year in China (Li et al., 2019). The slags contain a fair amount of valuable metals, such as W, Sn, Sc, Ta and Nb, and the concentrations of W (1–2%) and Sn (0.4–0.8%) are much higher …

Research progress on granulation process of iron and steel slag. Efficient utilization of iron and steel slag is one of the important measures to achieve peak carbon …

Currently, the reuse of steel slag in China's steel industry is high, greater than 95%. Dust sludge is difficult to use at present. ... To fill this research gap, the melting reduction technology for recycling steel slag and dust mud used in a steel plant of Tangshan was selected as a case study in order to explore the environmental …

Abstract. Barium slag (BS) is generated as a by-product waste during the production of barium salts from barite. A large amount of BS is discharged annually threating the ecological environment and restricting the development of the barium salts industry. In China, BS is classified as hazardous waste due to its corrosivity, and more …