The FINEX process is known for the flexibility of recycling ferrous by-products. There are chances that the ferrous by-products that cannot be recycled in the blast furnace due to inferior mechanical, thermal, and chemical properties can be recycled in the FINEX process. In the present study, the feasibility assessment of recycling copper slag in the FINEX process has been performed on an industrial pilot-scale.
Extracting ferrous and non-ferrous metals. We separate the calcined slag into fractions using different classification units, so that we can recover ferrous and non-ferrous metals using magnets and non-ferrous metal separators. Step 3: Storing the processed slag. Storing the processed slag. The residual slag from the extraction process is With smelting slags, two approaches are available in principle for recycling. Recovery of the ferrous and non-ferrous metals and also the use of the pure, metal-free slag itself as a secondary construction material. The recovery of the metals can be implemented using ferrous and non-ferrous metal separators adapted to different grain classes.
However, implementation often fails due to the political framework conditions, which unnecessarily restrict the use of slag-based products. This range of topics was the focus of the discussions and lectures at the Euroslag conference, which was attended by 130 participants from 29 countries – among them manufacturers and marketers of ferrous slags, representatives from politics, administrative bodies and associations, as well as scientists.
Ferrous slags are valuable co-products of iron and steelmaking. Blast Furnace Slag (BFS) is composed of the non-metallic components removed from iron ore during processing in a blast furnace. It consists mostly of silica, alumina, and lime. Steel Furnace Slag (SFS) is composed of lime flux and impurities removed from iron during processing in a steel furnace. Typically SFS is primarily composed of lime, iron oxide and silica. Both BFS and SFS have unique physical and chemical properties that
The slag granulate fulfills the same criteria as wet-granulated slag for use in the cement industry. GasFerm - Generation of added value for offgases GasFerm is a new development in offgas recycling that simultaneously addresses the need to reduce the steel industry’s carbon footprint while improving a steelmaker’s economic competitiveness through promotion of the circular economy.
The first step allows the slag to cool; upon cooling it is sent into a grinder so the lime and be separated from the ferrous metal that is removed by magnet. The scrap metal is returned to the production line and screened again for usable product. The rest is used for construction material. Following that the recycled lime is mixed with new lime to create the specified lime combination that is low on impurities. At its current state can be injected into a ladle, BOF, or EAF creating a
An attempt is made in this paper to reduce the foundry slag’s environmental footprint by recycling it. Recycling is a key concept of modern waste management and is the third component of waste hierarchy. While most of the foundry industries manage to minimise its waste, the difficulty exits with the small scale industries. Foundry slag which causes series environmental issues when disposed as
The invention relates to a comprehensive treatment method for recycling ferrous metallurgical slag. The method comprises the steps of treatment of ferrous metallurgical slag, such as steel slag, blast furnace water slag, desulfurization gypsum, sludge, blast furnace slag, coal ash slag, and coal gangue, comprehensive treatment of waste coal gas, such as coke oven gas, blast furnace gas, and converter gas, and recycling of production waste water.
2. Recycling of steel slag: Steel slag, in combination with the refractory of the furnace, contains ferrous, stainless steel 304 and 316, together with valuable stones. SS 304 and 316 are separated. Some of the stones are recycled.
Eco-friendly steelmaking slag solidification with energy recovery to produce a high quality slag product for a sustainable recycling Currently the energy in ferrous slag (about 1-2 GJ/tslag at tapping temperature) is wasted when slag is cooled on contact with the atmosphere or by water during the solidification process.