recycling of blast furnace slag

Recycling and environmental issues of metallurgical slags

2009-8-26 · 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.

Pelletized blast furnace slag, in contrast to air-cooled and expanded blast furnace slag, has a relatively smooth texture and rounded shape. Grinding reduces the particle size to a cement fineness for use as a hydraulic cement, which is typically less than 3500 cm 2 /g. (8)...

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Slag Grinding Plant

2019-10-12 · The company specializes in manufacturing tube mills, rotary kilns, vertical mills and large steel casting and can undertake the EPC projects of cement production lines, active lime production lines, blast furnace slag/ steel slag/ nickel slag grinding plants, and its products are sold to more than 50 countries and regions in Southeast Asia

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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RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC

2017-10-11 · RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC FURNACE MIHOK1, K.SEILEROVÁ, D.BARICOVÁ Technical University, Faculty of Metallurgy, Letná 9, Koice, Slovakia SUMMARY The paper presents results of research of demetallized EAF slag recycling into charge of electric arc furnace. Effects of recycling on steelmaking process parameters,

Blast furnace slag is a by-product from blast furnaces which is used to produce iron. Blast furnace slag has been used extensively as a successful replacement material for Portland cement in concrete materials to improve durability, produce high strength and high performance concrete, and brings environmental and economic benefits together, such as resource conservation and energy savings....

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Fly ash and Blast Furnace Slag for Cement Manufacturing

2017-11-20 · Fly ash and Blast Furnace Slag for Cement Manufacturing GBFS is slag from the iron production in Basic Oxygen Furnaces. When this slag is actively cooled and ground, GBFS is produced, which can be utilised as a cement or concrete addition. GBFS is said to increase durability of concrete due to an increased setting time, which reduces

2007-6-11 · 2.2 Blast furnace slag recycling in the slag cement production4 The slag cement production was the first form of slag recycling as hydraulic binder, which appeared about 40 years before the addition of slag to clinker. It was probably Emil Langen, director-chief of Friedrich-Wilhelm Iron and Steelworks, in Troisdorf, Germany, who, in...

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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

2016-12-5 · In the past, slag was taken from the blast furnace, basic oxygen furnace (BOF), and electric arc furnace (EAF) and hauled off to a hazardous dump site where millions of tons have accumulated. The major waste by product from steel production is slag at 79.15% as shown in 1....

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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

Recycling of industrial waste and performance of powder and blast-furnace slag powder are mixed into concrete. In addition, about 50% decrease in expansion rate of mortar bars with...

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Steel and CO2 the ULCOS program CCS and mineral

2011-10-21 · Steel and CO2 the ULCOS Program, CCS and Mineral Carbonation using Steelmaking Slag Jean-Pierre BIRAT ArcelorMittal, Maizières-lès-Metz, France Abstract Over the past 40 years the European steel industry has reduced its CO2 emissions with

RECYCLING OF LD-SLAG The phosphorus content of the blast furnace usually ranges from 0.1 to 0.3 % depending upon the type of burden used, whereas the bulk of quality steels must have phosphorus level below 0.02%. Table 8 shows the effect of recycling of dephosphorised slag on ...

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Recycling of Waste Plastic Packaging in a Blast Furnace

2019-4-3 · 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

The current status of the recovery and utilization of blast furnace slag both at home and abroad are described,and the advantages and the disadvantages of various treatment processes compared in the present discussion.It is indicated that the treatment method of ...

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UG-Mat Blast Furnace Slag

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.

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 ...

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Discussion of blast furnace slag recycling of a factory

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

Many translated example sentences containing "blast furnace slag" French-English dictionary and search engine for French translations. Look up in Linguee; Suggest as a translation of "blast furnace slag" of recycling waste or industrial byproducts such as blast-furnace slag (from steel making) and fly ash (from coal-burning ...

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Estimation of the Environmental Impact for Recycling

Blast furnace (BF) slag has been recycled in the construction industry mainly as cement and concrete. However, in the past few years, recycling conditions have changed and other recycled materials have become dominant; thus, new applications for BF slag need to be considered. In this study, we first

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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3 Iron Unit Recycling

2013-11-5 · Chapter 3: Iron Unit Recycling 58 Steel Technology Roadmap . Trends and Drivers. Blast furnace slag has a relatively low iron content and finds almost complete utilization in a wide variety of commercial applications (mostly in the manufacture of cement, concrete, and

Blast Furnace Slag

Blast Furnace Slag. Blast furnace slag (BFS) is a product of iron production, which has been widely investigated and utilized, particularly as a supplementary cementitious material for cement or alkali-activated material, owing to its high hydraulic property or alkali activation reactivity.

Blast Furnace Slag

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 dense, sand-size grains passing a