recycling of blast furnace slag

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Blast Furnace: Introduction, Definition, Construction ...

May 21, 2020· In a blast furnace, while the process of extracting the iron has occurred at that time, we also get slag or impurities. To remove this we use two types of method. One is using of a high-pressure water jet, which blends with the slag or impurities then we send the mixture to the granulation plan, secondly if it is unable to granulate in the ...

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Effect of blast furnace slag powder on compressive ...

slag powder and blast furnace slag so the recycling of steel slag can bring enormous benefits and environ-mental benefit to whole society.[9] 6. Ground granulated blast furnace slag is commonly used in combination with Portland cement in concrete for many applications[10,11] 7. The heat of hydration is dependent on the Portland

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for recycling iron slag

[randpic] Slag recycling - recovery The Waste Framework Directive 2008/98/EC also regulated the recycling of iron and steel slags. Fig. 6 shows the recycling of blast furnace slag for 2018. The production volume was 20.7 Mta, of which 86.0

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Slag recycling - recovery

The terms blast furnace slag (BFS) and granulated blast furnace slag, as well as LD slag and electric furnace slag are used for finer distinctions. With high-quality iron ore grades with an iron content of 64 to 67 %, a blast furnace typically produces about 0.25 to 0.30 t of slag per t of pig iron.

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Ground Granulated Blast Furnace (GGBF) Slag Used in ...

Blast furnace slag is nonreactive in a high alkali environment, such as concrete and soils. Blast furnace slag concrete can be reliably pumped when the slag is supplied to the ready-mix production in a saturated condition. Use of the cementatious properties of ground granulated blast furnace (GGBF) slag was reported as early as 1774. GGBF slag ...

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What Are the Uses of Blast Furnace Slag (BFS)? - FTM Machinery

Dec 12, 2019· The output of blast furnace slag can not be ignored. If it can be used reasonably, it will save a lot of energy and resources. BFS ouput of several countries. How to process blast furnace slag? Of course, with the latest trend of recycling society, the effective utilization of blast furnace slag has already attracted people's attention.

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Basics of slag production - Article on the slag industry ...

Oct 27, 2011· This can sometimes be countered by recycling to some other branch of the process stream or by separating out certain fractions and recycling those. An example of the latter is the magnetic extraction of metal globules from BOS slag and their addition to the blast furnace feed, although the amount of phosphorus in the adhering silicate slag has ...

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MF 182-6 Properties and Uses of Iron and Steel Slag

IRON BLAST-FURNACE SLAG Blast-furnace slag is defined by the American Society for Testing and Materials as "the non-metallic product consisting essentially of silicates and alumino-silicates of calcium and other bases that is "developed in a molten condition simultaneously with iron in a blast furnace." The blast furnace is the primary means ...

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THE USE OF BLAST FURNACE SLAG - CORE

blast furnace slag for Portland cement, fi nely granulated blast furnace slag (MSJŠ) from the company Kotouč Štramberk, Ltd. was used. An equipment fl owsheet of a grinding plant for granulated blast furnace slag is pre-sented in Figure 1. The fi ner is the grinding of slag, the better are some properties, especially strength (primary,

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(PDF) Recycling of waste PET granules as aggregate in ...

Recycling of waste PET granules as aggregate in alkali-activated blast furnace slag/metakaolin blends. Semiha Akçaözoğlu. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. READ PAPER.

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National Slag Association | For more info call: +610-857 ...

National Slag Association. Since 1918, The NSA has promoted the use of Blast Furnace and Steel Furnace Slag. Blast Furnace slag has been called the "All-Purpose Aggregate" as it can be used in all construction applications as either a normal weight or lightweight (expanded or pelletized) aggregate depending on how it was formed and processed.

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UG-Mat Blast Furnace Slag | Recycled Materials Resource Center

Blast Furnace Slag - Material Description ORIGIN In the production of iron, iron ore, iron scrap, and fluxes (limestone and/or dolomite) are charged into a blast furnace along with coke for fuel. The coke is combusted to produce carbon monoxide, which reduces the iron ore to a molten iron product.

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Promoting Recycling || KOBE STEEL, LTD.

Recycling Iron and Steel Slag. Every year, the Kakogawa Works and Kobe Works together generate about 2.4 million metric tons of blast furnace slag and 1.2 million metric tons of steelmaking slag as secondary products. Both types of slag are reused as a raw material for cement or as a bedding material in road construction. Compared with regular ...

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ITP Steel: Recycling and Reuse of Basic Oxygen Furnace ...

The recycling of blast furnace (BF) slag has made significant progress in past years with much of the material being utilized as construction aggregate and in cementitious applications. However, the recycling of BOF/BOP slag still faces many technical, economical, and environmental challenges. Previous efforts have

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recycling of iron slag

iron steel slag recycling equipment - sourena.de. Steel recycling generates a small water impact this impact is due to steel production from sources generating blast furnace slag which in turn is used in concrete production as a substitute for cement when recycling is undertaken, so concrete production must revert to cement in place of blast furnace slag, this process no longer occurs

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Recycling Ground Granulated Blast Furnace Slag as Cold ...

Ground granulated blast furnace slag (GGBFS), a by-product from iron industry, was recycled as artificial coarse aggregate through cold bonding pelletization process. The artificial slag aggregates (ASA) replaced partially the natural coarse aggregates in production of self-compacting concrete (SCC) …

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Estimation of the environmental credit for the recycling ...

May 01, 2005· Blast furnace slag is one of the major byproducts of which fraction are approximately 50% of the total byproducts and wastes combined . Depending on the cooling method applied to blast furnace slag, the slag is divided into two types: air-cooled blast furnace slag and GBFS.

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Recycling of ladle furnace slags

Recycling of ladle furnace slags . Abstract . Ferrous industry slag is waste product of all steelmaking manufactures. These materials should be reused or stocked. There is abundant literature on the subject of reuse and recycling of blast furnace(BF), basic oxygen furnace(BOF), electric arc furnace(EAF). However, due to the fact that ladle ...

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Discussion of blast furnace slag recycling of a factory ...

Abstract: A large amount of solid waste slag is generated in the production process in iron and steel enterprises. As for enterprise which takes blast furnace as the process, blast furnace slag accounts for more than 50%. Blast furnace slag disposal has experienced the following development: as a waste treatment, use in subgrade and foundation engineering, to the stage of comprehensive ...

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Recycling and environmental issues of metallurgical slags ...

Thus crystallized blast furnace slag has little or no value as a cementing component. Crushed BF slag for use as aggregate, ballast and light-weight building material has been an important industry for many years. The concrete made of BF slag as aggregate has the similar properties compared to the conventional aggregates.

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Slag aggregates - Tarmac

In concrete, processed steel and blast furnace slag provide a sustainable alternative to primary aggregates in the production of lightweight or dense ready-mixed concrete. Blast furnace slag can also be used to make Ground Granulated Blast-furnace Slag (GGBS) which is used as a cement replacement in concrete.

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RECYCLING POSSIBILITIES OF THE SLAG FROM CUPOLA FURNACE …

Oct 11, 2018· The cupola furnace slag originates from melting of gangue parts of metal bearing materials, slag forming additions and coke ash. The basic components of cupola slags are CaO, SiO2 a Al2O3. The cupola furnace slag properties are similar with blast furnace slag properties and this was the reason why cupola slag was used as a replacement of blast ...

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Environmental Modeling of Blast Furnace Slag Aggregate ...

The study presented in this paper has mainly consisted of developing an environmental model of the aggregate production process. An environmental assessment of blast furnace slag aggregates was performed at a given quarry site, for two typical production scenarios, with each yielding several gradings.

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3 Iron Unit Recycling - Energy

Blast Furnace Slag In the production of hot metal, the blast furnace is charged with iron-bearing materials (iron ore, sinter, pellets, etc.), flux (limestone Figure 3-6. Ironmaking Iron Units, U.S. 2000 and/or dolomite), and fuel (coke). (SRI 2001)Two products are obtained from the bottom of the blast furnace: molten iron and slag.

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Scrap and recycling - Home | ArcelorMittal

Blast furnace slag and the waste gases from various stages in the steelmaking process already have a wide range of uses. For example, we have a partnership with Ecocem at our Dunkirk and Fos sites in France. Ecocem granulates blast furnace slag to create a partial replacement for Portland cement.

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Using Recycled Industrial Materials in Roadways

• Blast furnace slag • Steel slag • Scrap tires Fly ash can also be used as mineral filler in asphalt base, granular base, and sub-base. 7 Subgrade (Original Soil) Fly ash can be used to improve the structure and stability of the subgrade upon which the road will be built. 8 Structural Fill Structural fill supports and relieves pressure from

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Application of Activity-Based Costing to Green Industry ...

Blast-Furnace Slag Powder" or "Blast Furnace Slag Powder", which can not only improve concrete application quality but also reduce cement consumption. The previous environmental pollution problem caused by slag can also be prevented through effective recycling. Blast furnace powder added cement, so-called blast furnace cement, has superior

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RECYCLING OF FLUE DUST INTO THE BLAST FURNACE

Blast furnace flue dust contains valuable amounts of carbon and iron. The contents of harmful trap elements are low enough for recycling into the blast furnace. Since 1993, SSAB Tunnplåt in Luleå has recycled the flue dust by charging it into the blast furnace in the form of a cold-bonded dust briquette.

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