recycling steelmaking slags in cement

recycling steel slag

While the usage of blast furnace slag is well established in the area of cement making recycling of steelmaking slag is still a challenging task. About 150-180 kg steelmaking slag is generated per ton of steel depending upon the quality of hot. Service Online; Recycling and environmental issues of metallurgical slags

Recycling Ladle Furnace Slag as Flux in Steelmaking: A ...

Slag is a by-product formed in most metallurgical process. During the steelmaking process a large amount of slag is produced, which becomes a source of waste, which in many instances is land filled.

Applications of Steel Slag Powder and Steel Slag Aggregate ...

The applications of steel slag powder and steel slag aggregate in ultra-high performance concrete (UHPC) were investigated by determining the fluidity, nonevaporable water content, and pore structure of paste and the compressive strength of concrete and by observing the morphologies of hardened paste and the concrete fracture surface. The results show that the fluidity of the paste containing ...

Utilization of ironmaking and steelmaking slags

The method of recycling of steelmaking slags that followed from the experiments of the authors, are described. Proposal for the way of utilization of one sort of ladle fur- ... slag-portland cement). from 2000 to 2003 blast furnace slag production increased by 5,0 % p.a. to 200 Mta. in the same period granulated blast furnace slag production in-

The recycling and reuse of steelmaking slags — A review ...

Jul 01, 2019· However, re-use in steel production is limited at present, but for many years steelmaking slags have been utilized and recycled in the civil engineering industry as cement, roadbed material, aggregate in concrete and in the stabilization of riverbanks (Motz and Geiseler, 2001).

The recycling and reuse of steelmaking slags — A review

Large volumes of slags are formed as by-products during the refinement of pig iron by basic oxygen steelmaking or electric arc furnace steelmaking. In order to lower the environmental impact of the steel industry and ensure its economic sustainability, there have been significant studies finding the ways to recycle by-products.

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

processes and to strive towards 'slagless steelmaking' by recycling slags internally. Steelmaking slag volumes have been reduced on commercial scale from about 140 kg/tonne steel to 60 kg/tonne steel. Moreover, model predictions have shown that, in principle, all slag can be recycled and the phosphorous extracted to produce fertilizer.

Slags, steelmaking - Substance Information - ECHA

Slags, steelmaking. ... This substance can be found in products with material based on: stone, plaster, cement, glass or ceramic (e.g. dishes, pots/pans, food storage containers, construction and isolation material). ... Examples include recommended measures on fire-fighting, transport and recycling …

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.

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

Jul 18, 2013· Japanese steelmakers have spearheaded attempts to reduce slag volumes in the individual unit processes and to strive towards 'slagless steelmaking' by recycling slags internally. Steelmaking slag volumes have been reduced on commercial scale from about 140 kg t −1 steel to 60 kg t −1 steel. Moreover, model predictions have shown that in ...

Recycling breakthrough unites steelmaking, wastewater ...

Jun 02, 2020· This thought inspired them to successfully develop a 'zero waste' recycling method for the by-product of steelmaking. They report that concrete made with post-treatment steel slag is about 32% stronger compared to raw steel slag, and roughly 8% stronger than concrete made with conventional coarse aggregates.

Sustainable Approach for Linz-Donawitz Slag Waste as a ...

Linz-Donawitz (LD) slag, solid waste produced during steel manufacture in basic oxygen furnace, is difficult when it comes to handling and disposal and has very limited utilization. To increase its reusability, the suitability of supplanting cement with LD slag in concrete was examined. To study the impact of partially replacing cement with LD slag on strength, microstructure, and durability ...

RECYCLING AND UTILIZATION OF SOLID WASTE GENERATED IN …

The granulated BF slag is used for cement production but the slag containing high amounts of Fe is a major challenge to human being. This paper discusses the issues pertaining to the solid waste generation in Rourkela Steel Plant, Odisha in terms of volumes toxicity, challenges and efforts towards recycling and utilization in eco-friendly manner.

Possible Uses of Steelmaking Slag in Agriculture: An Overview

Slags coming from both BF and steelmaking processes are consumed at steelworks, used in cement, roadbed material, ground improvement material, civil engineering material and fertiliser. Once slags were dumped; nowadays they are considered marketable products and only a small percentage is processed as industrial waste in landfills.

RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC …

25/13 Archives of Foundry, Year 2004, Volume 4, № 13 Archiwum Odlewnictwa, Rok 2004, Rocznik 4, Nr 13 PAN – Katowice PL ISSN 1642-5308 RECYCLING OF STEELMAKING SLAG FROM ELECTRIC ARC FURNACE Ľ MIHOK1, K.SEILEROVÁ, D.BARICOVÁ Technical University, Faculty of Metallurgy, Letná 9, Košice, Slovakia

The potential utilization of slag generated from iron- and ...

Oct 29, 2019· Along with iron and steel production, large amount of slag is generated. Proper management on the iron- and steelmaking slag is highly demanded due to the high cost of direct disposal of the slag to landfill, which is the most adopted management approach. In this article, the potential application of iron- and steelmaking slag has been reviewed, which included the slag …

Advances in slag recycling and reuse - UKEssays.com

3. Recycling of industrial waste and performance of steel slag green concrete. LI Yun-feng, YAO Yan, WANG Ling. 16, China: Springer, 2009. 0768/0773. 4. Steel, JFE. Reducing Generation and Discharge of Byproducts at JFE Steel. 2004. 5. Recycling of slag to act as a flux in submerged arc welding.

Fundamental Research on a Rational Steelmaking Slag ...

Steelmaking slag generated in Japan contains 93 kt-P/year, which is close to the total amount of Japan's imports of phosphorus ore (111 kt-P/year) 3-4). However, the phosphorus in steelmaking slag is not utilized in any way. Hence, a new slag recycling process has been proposed in order to meet the demand for both a rational slag recycling

Chapter Treatments and Recycling of Metallurgical Slags

Keywords: slag, recycling, steelmaking, refractory wear, slag properties 1. Introduction In modern steel plants, the emphasis is placed simultaneously on quantity and quality. Energy consumption per ton of steel production is often considered a benchmark of operational efficiency. Steel …

Electric Arc Furnace Slag as Coarse Recycled Aggregate for ...

Oct 01, 2015· Electric arc furnace (EAF) slag is a by-product of steel production in electric arc furnaces. Several studies have tried to demonstrate its suitability in civil engineering application, such as in bituminous mixtures and cement-based materials, due to its good physical, chemical and mineralogical properties. Particularly the re-use as coarse aggregate for concrete production has been shown to ...

Environment-Friendly Block, "Ferroform," Made from Steel Slag

slag. 24.97 million tons of blast-furnace slag and 14.4 million tons of steelmaking slag were generated in Japan in fiscal 20071). Efficient recycling of blast-furnace slag has already been achieved: today, of this slag is used as charge stock of Portland blast-furnace slag cement and roadbed materials, among others. Recycling

Steelmaking slags as raw material for sulphoaluminate ...

Abstract. The present work was undertaken as part of the research in the Minerals and Metals Recycling research centre, MiMeR. The course of the thesis is attributed to metallurgical slags from the steelmaking industry and the possible use of such by-products as raw material for sulphoaluminate belite cement …

(PDF) RECYCLING OF STEELMAKING SLAG | PANKAJ NARAYAN ...

While the usage of blast furnace slag is well established in the area of cement making, recycling of steelmaking slag is still a challenging task. About 150-180 kg steelmaking slag is generated per ton of steel depending upon the quality of hot

Blended Cement Mixed with Basic Oxygen Steelmaking Slag ...

Portland cement tends to exhibit negative environmental impacts; thus, it is required to find measures that will improve its green credentials. In this study, we report a blended Portland slag cement as an alternative environmentally-friendly building material in order to reduce the total carbon footprint resulted from the production of the ordinary Portland cement (OPC), which may resolve the ...

Nonmetallic LD slag fines – opportunities by invoking ...

Owing to the stability issue of steelmaking slag it's utilization in road making is very limited and only around 10% of production can be utilized in cement making due to high iron content. It is also used in the sinter making to recover iron value however, all these processes are not generating enough opportunities to utilize the entirety ...