recycling of iron and steel slag

recycling of iron and steel slag

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 % was sand slag from slag granulation and 14 % was air-cooled BFS.

A Study into the Use of Recycle Iron and Steel Slag as an ...

Iron and steel slag production in Nigeria was estimated at 0.29 tons per ton of steel produced (Uzondu, 2012) hence, the total estimated production of iron and steel slag in Nigeria was 0.55405 million tonnes per year. Iron and steel slag are widespread in Nigeria because the industries producing these by-products are found in the north, south ...

Steel & iron slag - recycling, steel scrap, metal scrap ...

The BOF cycle generates four types of iron and steel slag: Granulated Blast furnace Slag – GBSF. Air-cooled blast furnace Slag – ABS. Basic Oxygen furnace Slag – BOS. Other secondary metallurgical slag (Slag Steelmaking - SMS) Most of the slag resulting from the integral cycle is generated during the production of pig iron

Management of recycling operations for iron and steel ...

2016-1-25 · Since slags are indispensable to iron and steel making processes, established recycling alternatives can be used to convert accruing slags to secondary resources, such as road construction materials, cements and fertilizers. The potential of a recycling alternative depends on a multitude of technical, economic and ecological influencing factors.

Life Cycle Assessment of Internal Recycling Options of ...

2011-7-1 · 3. 4 Allocation for steel slag recycling process Steel slag recycling process yields waste iron and residual steel slag. Waste iron is material of iron production. Residual steel slag can be used by iron and steel factories or can be used by other produc- tion systems.

Recycling and environmental issues of metallurgical slags ...

2004-1-18 · impact strength of the cooled slag5. Steel slags Steel slag is a by-product of the steelmaking from iron with a wide range of chemical and mineral compositions, resulted by different feeding material and smelting conditions. In comparison to BF slags, BOF and EAF slags are produced from an oxidation process, thus have higher iron oxides contents.

Steel slag in China: Treatment, recycling, and management ...

2018-8-1 · 1. Introduction. Steel slag is the oxidized material that is generated when lime, dolomite, and other auxiliary materials are added, and oxygen is blown onto the pig iron produced by a blast furnace to remove carbon (C), phosphorus (P), sulfur (S), and other components to produce crude steel in a basic oxygen furnace (BOF).

Promoting Recycling || KOBE STEEL, LTD.

31 行 · Recycling iron and steel slag. Steam aging facilities. In fiscal 2011, our Kakogawa Works and Kobe Works together generated 2.41 million metric tons of blast furnace slag and 1.11 million metric tons of steel slag as byproducts. Both types of slag are reused as a raw material for cement or as a bedding material in road construction.

(PDF) Steel Slag and Waste Management - ResearchGate

Steel slag is a residue produced by refining iron to steel in open-hearth, basic oxygen and electric arc furnaces. It is liquid cooled from its molten state and has high density.

UPDATE OF IRON AND STEEL SLAG IN JAPAN AND

2013-4-9 · FOCUS: Iron and steel slag . TARGET: to create Recycling-oriented Society . The primary objectives are: to promote a better understanding of iron and steel slag, to position the slag as a viable commercial product and . to pave the way for its stable supply. MEMBERS . Iron and Steel manufactures (4), and the Assoc./Group of manufactures (2)

Management of recycling operations for iron and steel ...

2016-1-25 · Since steel production is inevitably linked to slag generation, most steel producers already have established recycling alternatives for iron and steel making slags (Das et al. 2007, pp. 40–51; Motz and Geiseler 2001, pp. 285–291). As a consequence, the planning approach focuses an operative scope rather than tactical or strategic planning.

Recycling techniques of steel slag and its utilization in ...

2010-1-13 · Abstract: Steel slag is a solid waste discharged in large quantities by the iron and steel industry. Steel slag includes a certain scale mineral such as C 2 S and C 3 S, and can be applied in cement and concrete as mineral admixtures. When super fine steel slag powder is mixed into concrete as an active admixture, concrete properties will be improved greatly so as to produce high performance ...

Recycling and environmental issues of metallurgical slags ...

2004-1-18 · impact strength of the cooled slag5. Steel slags Steel slag is a by-product of the steelmaking from iron with a wide range of chemical and mineral compositions, resulted by different feeding material and smelting conditions. In comparison to BF slags, BOF and EAF slags are produced from an oxidation process, thus have higher iron oxides contents.

Promoting Recycling || KOBE STEEL, LTD.

Recycling iron and steel slag. Steam aging facilities. In fiscal 2011, our Kakogawa Works and Kobe Works together generated 2.41 million metric tons of blast furnace slag and 1.11 million metric tons of steel slag as byproducts. Both types of slag are reused as a

Life Cycle Assessment of Internal Recycling Options of ...

2011-7-1 · The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel industry was emphasized. Based on the four scenarios of different internal recycling strategies for BOF slag, life cycle assessment (LCA) as a valuable tool for industrial solid waste management was applied to analyze the contribution to reducing environmental impacts and resources burdens for ...

UPDATE OF IRON AND STEEL SLAG IN JAPAN AND

2013-4-9 · FOCUS: Iron and steel slag . TARGET: to create Recycling-oriented Society . The primary objectives are: to promote a better understanding of iron and steel slag, to position the slag as a viable commercial product and . to pave the way for its stable supply. MEMBERS . Iron and Steel manufactures (4), and the Assoc./Group of manufactures (2)

Industrial uses of slag—The use and re-use of iron and ...

2014-7-8 · Industrial uses of slag—The use and re-use of iron and steelmaking slags R. DIPPENAAR Steel Institute, University of Wollongong, Northfields Avenue, NSW, Australia Traditionally, iron ore has been reduced with coke in a blast furnace and the hot-metal product of the blast furnace containing carbon, manganese, silicon, sulphur and phosphorous, was

Quantitative Determination of Metallic Iron Content in ...

2013-12-24 · Keywords: metallic iron, analysis, steel slag, recycling. Introduction The steel industry in the United States generates large tons of by-products each year. The majority of these by-products are present in various forms of slag, sludge, and dusts. The recycling of these by-products has made significant progress in the past years.

(PDF) Scrap Iron and Steel Recycling in Nigeria

However, the few steel companies that are in operation, though with low capacities, depend on recycling of scrap iron and steel obtained mostly as solid wastes [4, 5] . Establishments in this ...

86 IRON AND STEEL SLAG - USGS

2020-2-7 · slag piles at about 129 processing plants (including some iron and steel plants with more than one slag-processing facility) in 33 States, including facilities that import and grind unground slag to sell as ground granulated blast furnace slag (GGBFS). Air-cooled iron slag and steel slag are used primarily as aggregates in concrete (air-cooled ...

Management of recycling operations for iron and steel ...

2016-1-25 · Since steel production is inevitably linked to slag generation, most steel producers already have established recycling alternatives for iron and steel making slags (Das et al. 2007, pp. 40–51; Motz and Geiseler 2001, pp. 285–291). As a consequence, the planning approach focuses an operative scope rather than tactical or strategic planning.

Promoting Recycling || KOBE STEEL, LTD.

Recycling iron and steel slag. Steam aging facilities. In fiscal 2011, our Kakogawa Works and Kobe Works together generated 2.41 million metric tons of blast furnace slag and 1.11 million metric tons of steel slag as byproducts. Both types of slag are reused as a

Recycling and environmental issues of metallurgical slags ...

2004-1-18 · impact strength of the cooled slag5. Steel slags Steel slag is a by-product of the steelmaking from iron with a wide range of chemical and mineral compositions, resulted by different feeding material and smelting conditions. In comparison to BF slags, BOF and EAF slags are produced from an oxidation process, thus have higher iron oxides contents.

Industrial uses of slag—The use and re-use of iron and ...

2014-7-8 · Industrial uses of slag—The use and re-use of iron and steelmaking slags R. DIPPENAAR Steel Institute, University of Wollongong, Northfields Avenue, NSW, Australia Traditionally, iron ore has been reduced with coke in a blast furnace and the hot-metal product of the blast furnace containing carbon, manganese, silicon, sulphur and phosphorous, was

Quantitative Determination of Metallic Iron Content in ...

2013-12-24 · Keywords: metallic iron, analysis, steel slag, recycling. Introduction The steel industry in the United States generates large tons of by-products each year. The majority of these by-products are present in various forms of slag, sludge, and dusts. The recycling of these by-products has made significant progress in the past years.

Recycling iron and steel - Jernkontoret

2018-11-19 · Recycling iron and steel Steel has one outstanding characteristic: it can be endlessly recycled without its material qualities being compromised. The iron atoms are indestructible, and by melting scrap metal it is simple to get the atoms to arrange themselves in a new, regular way to form new steel with new properties.

86 IRON AND STEEL SLAG - USGS

2020-2-7 · slag piles at about 129 processing plants (including some iron and steel plants with more than one slag-processing facility) in 33 States, including facilities that import and grind unground slag to sell as ground granulated blast furnace slag (GGBFS). Air-cooled iron slag and steel slag are used primarily as aggregates in concrete (air-cooled ...

Sustainable Recycling of Electric Arc Furnace Steel Slag ...

The aim of this research work was the evaluation of the feasibility to utilize industrial by-products, such as electric arc furnace steel slags, for sustainable concrete production. The paper evaluated the environmental and mechanical properties of steel slags and concrete, respectively. Specifically, the release of contaminants from steel slags was investigated by leaching test and the ...

SLAG - IRON AND STEEL - IBM

2020-2-18 · SLAG - IRON AND STEEL 16 Slag - Iron and Steel S lag is a by-product generated during manufacturing of pig iron and steel. It is produced by action of various fluxes upon gangue materials within the iron ore during the process of pig iron making in blast furnace and steel manufacturing in steel melting shop. Primarily, slag consists of calcium ...

THE SIGNIFICANCE OF IRON AND STEEL SLAG AS BY-

2012-5-28 · Steel slag is a hard, dense material somewhat similar to air-cooled iron slag. During the production of steel in BOF and/or EAF scrap metal, or metalized ore, or both, the carbon and silicon are removed as carbon dioxide, and the remaining oxidized elements are combined with added lime to form steel slag. The composition