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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

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.

A novel recycling approach for efficient extraction of

Nov 08, 2020 The recycling of high-titanium-bearing blast furnace slag (TiO 2 > 23 wt.%) is an urgent problem that has attracted global research attention. To achieve high-efficiency, low-consumption, clean, and high value-added recycling utilization, a new process is proposed herein, which entails reacting a CH 4-H 2-N 2 gas mixture with the titanium-bearing blast furnace slag to initially produce Ti(C, N

The recycling and reuse of steelmaking slags — A review

Jul 01, 2019 This forms blast furnace (BF) slag, which floats on top of the surface of the hot metal (Peters, 1982). The blast furnace is designed to work in a counter-current manner, meaning that the solid charge of ore and coke descends while the gases that are generated at the bottom of the furnace

Treatments and Recycling of Metallurgical Slags IntechOpen

May 07, 2018 The addition of blast furnace slag into cement avoids a part of limestone and coal extraction and makes it possible to diminish the CO 2 emissions that cause environment pollution. It is important to have in mind that blast furnace slags present particular hydraulic properties.

What is Blast Furnace Slag? Definition from Trenchlesspedia

2 天前 Blast furnace slag is a non-metallic residue usually obtained from steel plants or from the reduction of ores in a blast furnace. It is used as a mud cake modifier for the cementing of oil and gas wells.. It has been found that using a slag mix for cementing is beneficial economically and technically as well as better for the environment than Portland cement.

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.

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

Industrial uses of slag (the use and re-use of iron and

Jul 18, 2013 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 subsequently refined in a steelmaking furnace. During ironmaking as well as during steelmaking, significant amounts of slag are produced.

Slag Wikipedia

The slag can also be used to create fibers used as an insulation material called slag wool. Basic slag. Basic slag is a co-product of steelmaking, and is typically produced either through the blast furnace oxygen converter route or the electric arc furnace ladle furnace route.

(PDF) RECYCLING POSSIBILITIES OF THE SLAG FROM CUPOLA FURNACE

Concrete mixtures from blast-furnace slag, or from an electric arc furnace slag, met the strict standards for road concrete STN 73 6123, which is used for demanding applications in roads of first

Recycling and utilization assessment of waste fired clay

Sep 01, 2016 Granulated blast-furnace slag has been employed as 20%, 40%, 60% and 80% replacement of waste fired clay bricks (Grog) in the production of geopolymers. At the same time, the effects of curing time on the properties of geopolymers were investigated.

Slag Cement Lehigh Hanson, Inc.

Recycling an Industrial Byproduct. Slag cement, originally known as granulated blast-furnace slag, begins with the production of iron. The heart of the process is the blast furnace that refines iron ore into iron. The ingredients are heated to nearly 1500 degrees Centigrade to form two components: iron and molten slag.

Slag Recycling Companies and Suppliers (Waste and

Rockwool was first used in the United States as an insulation in the early 1900’s and has remained a leader in the insulation industry for over 100 years. Manufactured from recycled blast furnace slag and trap rock; Rockwool continues to surpass

The blast furnace slag order 2014 New South Wales

The blast furnace slag order 2014 . Introduction This order, issued by the Environment Protection Authority (EPA) under clause 93 of the Protection of the Environment Operations (Waste) Regulation 2014(Waste Regulation), imposes the requirements that must be met by suppliers of blast furnace slag and blended blast furnace slagto which ‘the

Hydrothermal solidification of blast furnace slag by

Due to the large generation of blast furnace (BF) slag, new recycling processes that produce valuable materials are required. The authors have focused on a hydrothermal treatment of BF slag using

Recycling of Waste Plastic Packaging in a Blast Furnace System

blast furnace Injection of chlorine-contained plastics such as PVC in blast furnaces generates hydrogen chloride due to the decomposition of the plastic with heat, same as with other thermal processes. The limestone used in the blast furnace to control the composition of the slag neutralizes the hydrogen chloride in the furnace and

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.

Industrial uses of slag (the use and re-use of iron and

Jul 18, 2013 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 subsequently refined in a steelmaking furnace. During ironmaking as well as during steelmaking, significant amounts of slag are produced.

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

Air-Cooled Blast Furnace Slag. I: Characterization and

Oct 04, 2018 Effect of Steel Slag and Portland Cement in the Rate of Hydration and Strength of Blast Furnace Slag Pastes. Journal of Materials in Civil Engineering July 2010 . Show more Show less Authors. Dennis G. Grubb, M.ASCE. President, Fugacity LLC, 126 Veronica Ln., Lansdale, PA 19446; formerly, Vice President for Research, Development, and Technical

RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC

The aim of presented work was investigation of possibilities for recycling of electric arc furnace demetallized slag into electric arc furnace charge. The results are as follow: 1. Industrial experiments with recycling of demetallized EAF slag into EAF charge showed the additions of demetallized slag had no negative effects on smelting

Treatments and Recycling of Metallurgical Slags IntechOpen

May 07, 2018 The addition of blast furnace slag into cement avoids a part of limestone and coal extraction and makes it possible to diminish the CO 2 emissions that cause environment pollution. It is important to have in mind that blast furnace slags present particular hydraulic properties.

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

(PDF) RECYCLING POSSIBILITIES OF THE SLAG FROM CUPOLA FURNACE

Concrete mixtures from blast-furnace slag, or from an electric arc furnace slag, met the strict standards for road concrete STN 73 6123, which is used for demanding applications in roads of first

The blast furnace slag order 2014 New South Wales

The blast furnace slag order 2014 . Introduction This order, issued by the Environment Protection Authority (EPA) under clause 93 of the Protection of the Environment Operations (Waste) Regulation 2014(Waste Regulation), imposes the requirements that must be met by suppliers of blast furnace slag and blended blast furnace slagto which ‘the

Slag Cement Lehigh Hanson, Inc.

Recycling an Industrial Byproduct. Slag cement, originally known as granulated blast-furnace slag, begins with the production of iron. The heart of the process is the blast furnace that refines iron ore into iron. The ingredients are heated to nearly 1500 degrees Centigrade to form two components: iron and molten slag.

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

RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC

The aim of presented work was investigation of possibilities for recycling of electric arc furnace demetallized slag into electric arc furnace charge. The results are as follow: 1. Industrial experiments with recycling of demetallized EAF slag into EAF charge showed the additions of demetallized slag had no negative effects on smelting

"Recycling of ladle furnace slags" by Sima Aminorroaya

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 furnaces(LF) have only been constructed in significant numbers since the 1980's, the relatively low

Use of Blast Furance Slag as a Filler Material in Rural

Recycling of such wastes as a sustainable construction material appears to be viable solution not only to pollution problem but also an economical option to design of rural road. The present investigation was carried out to propose the use of Blast furnace slag as a filler material in rural road construction. BFS is a by-product generated

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.

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

Industrial uses of slag (the use and re-use of iron and

Jul 18, 2013 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 subsequently refined in a steelmaking furnace. During ironmaking as well as during steelmaking, significant amounts of slag are produced.

The blast furnace slag exemption 2014

The blast furnace slag or blended blast furnace slag can only applied to be land: 7.2.1. in cementitious mixes such as concrete; and 7.2.2. in a non-cementitious mix such as an engineered fill in earthworks or for roadmaking activities as follows: (a) asphalt aggregate,

An Experimental Investigation on Utilization of Waste

GRANULATED BLAST FURNACE SLAG GBFS from a local Iron and Steel plant was supplied by M/S Aavishk Buildtech, Bangalore. GBFS was tested as per IS: 2386-1963 which confirmed to Zone I as per IS: 383-1970.The results are tabulated. Granulated Blast Furnace Slag Table.7. Physical Properties of GBFS Sl No. Property Unit Value Obtained

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.

Dry Granulation of Blast Furnace Slag Steel360 News

A rotary-cup, air-blast atomizer was built, with a cup of 100mm diameter and a speed range of 500-1500 rev/min. The slag flow rates used in the tests varied from 0.2-0.5 kg/sec. The tests were restricted to duration of around 2.5min because of the limited capacity (around 30 kg) of the laboratory slag melting furnace.