slag related to recycling

Minerals | Free Full-Text | Effect of Al2O3 on the Structural

Water-quenched copper slag (WCS) modified with alumina (Al2O3) has been proven as a cement substitute; however, the effect of Al2O3 on structural properties of WCS related to pozzolanic activity has not been well investigated. The structural properties and the pozzolanic activity of WCS with different amounts of Al2O3 are characterized by …

Recycling hazardous steel slag after thermal treatment to produce …

As a result, recycling hazardous steel slag to produce eco-friendly binder for sustainable CPB can solve the environmental problem causing by steel slag disposal and cement manufacture and decrease the cost of mine production. Steel slag was pre-treated via calcination at different temperatures in the present work, i.e., 600, 800, and 1000 °C.

A Review on Environmental Concerns and …

Considering global steel production of 1878 million tonnes in 2020, the associated slag by-products possess a significant resource of major components like …

Effect of steel slag in recycling waste activated sludge to …

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%.

Recycling of steel slag aggregate in portland cement concrete…

The C 2 S and C 3 S content are related to the alkalinity of steel slag. The higher the alkalinity, the more C 3 S in steel slag ... The recycling of steel slag has significant engineering, economic, and environmental benefits, and SSA concrete has been demonstrated as an efficient utilization. This paper reviewed the production, treatment ...

Leaching behavior and occurrence of metal elements in copper slag…

Copper Slag (CS) is a solid waste produced during the industrial smelting of copper (Gorai et al., 2003).The current pyrometallurgical copper smelting process is mainly through the Ausmet furnace (Fig. 1); the furnace slag goes through the flotation process to obtain copper matter, yielding a composition of CS corresponding to 30–40 % of Fe, …

Solutions to the Converter Slag Recycling Problem in …

Microstructure of 0–0.4 mm fraction converter slag: (a) inclusions of metallic iron with dimensions of 0.06 and 0.18 mm, ×200, (b) inclusions of metallic iron with dimensions of 0.03 and 0.31 mm, ×100. Full size image. Steelmaking slag is used in blast-furnace charges at a number of foreign enterprises.

Slag: From By-product to Valuable Construction Material

Recycling slag minimizes waste and disposal costs, reduces energy use, extends furnace life, and lowers the amount of additives needed to make slag. The concerns with slag recycling are that first, because slag can contain environmentally hazardous materials, it must be analyzed for elemental composition before reuse. …

Steel slag and its applications in cement and concrete …

Steel slag's usage is related to its physico-chemical characteristics. The density of steel slag is 3.3–3.6 g/cm 3. Steel slag is hard because of its high Fe amount and is highly resistant to corrosion. The grindability index of steel slag is 0.7 [38]. Steel slag primarily consists of SiO 2, CaO, Fe 2 O 3, FeO, Al 2 O 3, MgO, MnO, and P 2 O 5 ...

Efficient recovery and regeneration of FePO4 from lithium …

Semantic Scholar extracted view of "Efficient recovery and regeneration of FePO4 from lithium extraction slag: Towards sustainable LiFePO4 battery recycling" by Guo-rong Hu et al.

Treatments and Recycling of Metallurgical Slags

Choi et al. [ 3] described two possible methods to recycle ladle slag: (a) by pouring molten ladle slag to another ladle, at time (taking advantage of the heat) and (b) by making a ladle slag ingot. The latter option mentioned is complex because of the unstable method used for making ingots.

Comprehensive review on metallurgical recycling and cleaning of copper slag

The typical phase composition of copper slags is summarised in Table 2.Many variations in the phase composition of copper slags can be observed because of some factors related to the pyrometallurgical process, such as characteristics of the copper mine processed, type of furnaces applied, type of additives (or flux) added, and type of …

Recycling and utilization assessment of steel slag in …

This paper presents an experimental study that aimed to recycle steel slag waste as a supplementary material in metakaolin based geopolymer, resulting in a new type of geopolymer composites. ... while mixture #10 decreased by 0.3 MPa and 0.5 MPa. This result is likely to be related to the evaporation of free water during the condensation ...

Investigation of thermal properties of blast furnace slag to …

Any improvement in the efficiency of energy recovery and recycling in the iron making process, including the recycling of the by-product slag, will have positive global implications, ... at 711 cm −1, is related to the symmetric stretching vibration of Si-O-Si, and 876 cm −1 is related to the asymmetric stretch of the AlO 4 −1 group ...

Treatments and Recycling of Metallurgical Slags

Abstract. Steelmaking plants continuously strive to reduce the environmental load in the steelmaking process, resulting in the recycling of energy, water, and other …

Recycling of ferrous slag in agriculture: Potentials …

This review broadly and critically explores the available information concerning the effective recycling of slag in agriculture and its potentials in crop yield, …

Slag recycling and reuse – GREENY approach

Slag recycling and reuse – GREENY approach. The global demand for raw materials is growing exponentially with the world's urbanization and technological progress. The growing raw materials consumption is an economical threat due to the increasing scarcity of critical materials, but also an environmental threat with increased amounts of ...

Slag Metallurgy and Metallurgical Waste Recycling | JOM

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 …

Characteristics and environmental aspects of slag: A …

Slag is a waste product from the pyrometallurgical processing of various ores. Based on over 150 published studies, this paper provides an overview of mineralogical and geochemical characteristics of different types of slag and their environmental …

Properties and microstructure of CO2 activated binder …

A CO 2 activated binder is developed by recycling phosphorous slag ... However, most related literature focuses on crystalline calcium silicates, while little on the poorly crystallized or amorphous calcium silicates. PHS is a solid waste produced during yellow phosphor manufacture using electric furnace. Its main chemical composition is ...

Ultromex lands slag recycling contract – Carolina Recycling …

Ultromex lands slag recycling contract. ... Peter Matt is a global business leader with experience across a range of manufacturing companies in metals and metals-related industries.… Constellium says scrap usage is at 40 percent. Posted On March 27, 2021 Constellium says scrap usage is at 40 percent

Skyline Metals, LLC | Baden, PA

Karen Barnes. Office Manager. 724-242-5243. accounting@skyline-metals. At Skyline Metals, we want to be your go-to stop for all your metal recovery needs. Our 33,000 square foot facility near Pittsburgh, Pennsylvania offers a prime location to recycle slag and waste products, helping to conserve nature's raw materials.

Slag: From By-product to Valuable Construction …

Recycling slag minimizes waste and disposal costs, reduces energy use, extends furnace life, and lowers the amount of additives needed to make slag. The concerns with slag recycling are that …

Harsco expands footprint with Gerdau

Harsco Environmental, a steel services company and division of Philadelphia-based Enviri Corp., has signed a multiyear services contract with Brazil-based steelmaker Gerdau S.A. Harsco, which has a collaborative history with Gerdau dating back decades, says the new contract is an inaugural agreement between it and Gerdau within …

Slag recycling in submerged arc welding and its effects on …

Section snippets Recycling of slag. Methodology used for recycling the slag has been presented graphically in Fig. 1. Approximately 30 kg of slag was collected from an Indian industrial unit engaged in the manufacturing of pressure vessels, boilers, digesters and chemical process vessels, free of cost. Fig. 2(a) shows the slag as …

Characteristics and environmental aspects of slag: A review

Abstract. Slag is a waste product from the pyrometallurgical processing of various ores. Based on over 150 published studies, this paper provides an overview of mineralogical and geochemical characteristics of different types of slag and their environmental consequences, particularly from the release of potentially toxic elements …

Environmental and Socioeconomic Impact of Copper …

well as a characterization of copper slag, with the aim of reusing and recycling the slag to benefit the environment and economy. Recycling methods are considered an attractive technological pathway ... smelter slag (copper slag), which comprises metals related to copper, e.g., nickel, zinc, iron, and cobalt [14–17]. Over the …

Carbide slag recycling to fabricate shape-stable phase …

DOI: 10.1016/j.est.2023.106694 Corpus ID: 256137716; Carbide slag recycling to fabricate shape-stable phase change composites for thermal energy storage @article{Xiong2023CarbideSR, title={Carbide slag recycling to fabricate shape-stable phase change composites for thermal energy storage}, author={Yaxuan Xiong and …

Characteristics and environmental aspects of slag: A review

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 …

Synergistic effect from combined use of scrap-recycling …

recycling slag with high Fe content with hydrated lime for soil remediation. Additionally, the name of the area where the contaminated soil was collected is not included in this study, as it is related to conicts of interest. Materials and methods Characterization of contaminated soils Two types of soil (L and H) were collected from the area ...