recycling of blast furnace slag

Recycling of Blast Furnace Slag and Fluorite Tailings into ...

2021-10-9  Diopside-based glass-ceramics are successfully produced by recycling blast furnace slag and fluorite tailing with the addition of supplementary elements such as TiO2, Fe2O3 and Cr2O3 as nucleation agents, using a conventional melting method. The effects of various nucleating agents on the phase components and structure of the prepared glass-ceramics were evaluated by a differential

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Slag recycling - recovery

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. From interim storage, 1.5 Mta was added to the production quantities, so that a total of 22.3 Mta of BFS was used in 2018. 17.9 Mta went into the production of cement and ...

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Estimation of the Environmental Impact for Recycling Blast ...

Blast furnace (BF) slag has been widely recycled by civil engineering and construction industries. However, the amount of recycled BF slag has now reached the saturation point, and the development of new value-added products will be essential for promoting sustainable societies. 1) Recently, a hydrothermal reaction was proposed as a potential approach for solving this problem. 2) In general ...

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UG-Mat Blast Furnace Slag Recycled Materials Resource

Granulated Blast Furnace Slag Granulated blast furnace slag is a glassy granular material that varies, depending on the chemical composition and method of production, from a coarse, popcornlike friable structure greater than 4.75 mm (No. 4 sieve) in diameter to

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A novel approach for the simultaneous recycling of Ti ...

2 天前  Ti-bearing blast furnace slag (TBFS) is considered industrial waste containing valuable Ti in the Panzhihua region of China. The concentration of TiO 2 in TBFS is typically 22-25% (Chen et al., 2018). At present, the amount of TBFS is 70 million tons, and it is increasing at a rate of 3.6 million tons per year (Zhang et al., 2018; Zhang et al ...

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Estimation of the environmental credit for the recycling ...

2005-5-1  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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(PDF) RECYCLING OF STEELMAKING SLAG

The steelmaking slag containing high phosphorus (1-3 % P 2 O 5) is not possible to be used in blast furnace, as all the phosphorus will report to iron increasing the refining load in steelmaking.

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Recycling of ladle furnace slags - Research Online

2020-10-13  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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Recycling and utilization assessment of waste fired clay ...

2016-9-1  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.

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Recycling of waste PET granules as aggregate in alkali ...

2014-5-15  The use of blast furnace slag in concrete production provides ecological advantages apart from the energy savings and contribution to the strength properties of concrete. Even though the cement industry utilizes large quantities of blast furnace slag, there is a still great volume available for use as an alternative binder .

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Estimation of the Environmental Impact for Recycling Blast ...

Blast furnace (BF) slag has been widely recycled by civil engineering and construction industries. However, the amount of recycled BF slag has now reached the saturation point, and the development of new value-added products will be essential for promoting sustainable societies. 1) Recently, a hydrothermal reaction was proposed as a potential approach for solving this problem. 2) In general ...

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

2014-5-29  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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Treatments and Recycling of Metallurgical Slags

2018-5-7  Blast furnace slag is obtained at 1300–1400°C; viscosity is around 0.4–1.0 poise; the chemical composition mainly includes FeO, CaO, MgO, SiO 2, Al 2 O 3, TiO 2, S, and C; the alkalinity (CaO/SiO 2) is 1.2; and the alkalinity [(CaO + MgO)/SiO 2] is

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(PDF) RECYCLING OF STEELMAKING SLAG

The steelmaking slag containing high phosphorus (1-3 % P 2 O 5) is not possible to be used in blast furnace, as all the phosphorus will report to iron increasing the refining load in steelmaking.

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EAF slag recycling

EAF Slag is produced in an Electric Arc Furnace. The visual appearance of the slag is a dark greyish colour. With respect to other slags (blast furnace slag), it can be tougher, with a density of about 20 - 25% greater than basalt or BFS. When crushed, the pieces have a typical cubical shape.

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Reaction Mechanisms of Blast Furnace Slag in Liquid and ...

In Japan, more than 25 million tons of blast furnace slag (BF) is generated every year. It has been widely used for cement production, road construction, and as a concrete ag-gregate. However, the amount of recycled BF slag in these fields was saturated and the development of a value added products from such waste slag has become an important

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Is Complete Recycling of Blast Furnace Sludge within the ...

2017-10-16  Is Complete Recycling of Blast Furnace Sludge within the Integrated Steel Plant Possible? Nordic Recycling Day 2017 Anton Andersson PhD Student, LTU. 2 What is Blast Furnace Sludge? ... + Slag formation improved + Dephosphorization improved + Suitable for some steel qualities + 8700 ton briquettes/year can be recycled

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Promoting Resource Recycling KOBE STEEL, LTD.

Slag from these sources is recycled as materials for such uses as cement and roadbeds. In particular, blast furnace cement utilizing ground granulated blast furnace slag, when compared to ordinary cement, helps to control alkaline aggregate reaction and reduce energy consumption during concrete production, making it a valued market commodity for its ability to cut CO 2. emissions.

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Blast Furnace Slag – IspatGuru

2013-4-10  Blast Furnace Slag. satyendra; April 10, 2013; 1 Comment ; Air cooled slag, BF slag, BF Slag cement, Expanded slag, Glass content, Granultated slag, Leachate, Pelletized BF slag,; Blast Furnace Slag. Blast-furnace (BF) 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 ...

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A Review of Slag Chemistry in Lead Recycling SpringerLink

A critical review of the technical literature on slag chemistry in lead recycling is presented. Laboratory methods used to improve our understanding of these systems is described. Ongoing investigations in the Kroll Institute for Extractive Metallurgy are presented.

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

2015-5-25  Discussion of blast furnace slag recycling of a factory Abstract: ...

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Treatments and Recycling of Metallurgical Slags

2018-5-7  Blast furnace slag is obtained at 1300–1400°C; viscosity is around 0.4–1.0 poise; the chemical composition mainly includes FeO, CaO, MgO, SiO 2, Al 2 O 3, TiO 2, S, and C; the alkalinity (CaO/SiO 2) is 1.2; and the alkalinity [(CaO + MgO)/SiO 2] is

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EAF slag recycling

EAF Slag is produced in an Electric Arc Furnace. The visual appearance of the slag is a dark greyish colour. With respect to other slags (blast furnace slag), it can be tougher, with a density of about 20 - 25% greater than basalt or BFS. When crushed, the pieces have a typical cubical shape.

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Reaction Mechanisms of Blast Furnace Slag in Liquid and ...

In Japan, more than 25 million tons of blast furnace slag (BF) is generated every year. It has been widely used for cement production, road construction, and as a concrete ag-gregate. However, the amount of recycled BF slag in these fields was saturated and the development of a value added products from such waste slag has become an important

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Is Complete Recycling of Blast Furnace Sludge within the ...

2017-10-16  1 Is Complete Recycling of Blast Furnace Sludge within the Integrated Steel Plant Possible? Nordic Recycling Day 2017 Anton Andersson PhD Student, LTU

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Strategy Paper On Resource Efficiency in Steel Sector ...

2018-10-4  Steelmaking process are generally classified under two heads, namely, Blast Furnace-Basic Oxygen Furnace (BF-BOF) route and Electric Arc Furnace (EAF) and /or Induction Furnace (IF) route. The BF-BOF route (primary sector) caters to around 45% of

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Effect of Blast Furnace Sludge (BFS) Characteristics on ...

The present study aims to give a detailed characterization of blast furnace sludge (BFS) by using different techniques, in order to determine the most effective recycling method to recover valuable metals from this waste. BFS is composed mainly of hematite, as its iron-bearing phase, and carbon, in addition to fractions of silicate and carbonate materials.

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RECYCLING OF FLUE DUST INTO THE BLAST FURNACE

2017-2-6  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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What Are the Uses of Blast Furnace Slag (BFS)? - FTM

2019-12-12  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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What is Blast Furnace Slag? - Definition from

2021-3-4  Trenchlesspedia Explains Blast Furnace Slag. Blast furnace slag is durable and has long-term compressive strength due to its pozzolanic and hydraulic characteristics when finely ground. Since zonal isolation in the annular space between the casing and the borehole is very important, it has led to the development of a method to obtain improved zonal isolation using drilling fluid solidification ...

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