Scholarly record
POSSIBILITIES OF UTILIZATION OF SLAGS FROM METALLURGICAL PROCESSES
Abstract
Smelting of hammerable iron and its treatment in Antiquity and Medieval produced also by-product: slag. Because of small yields of iron the process produced only small amounts of slag that did not attract attention of smelter concerning its possible use. The use of slag pieces was only accidental. The paper deals with the most important processes used for treatment of blast furnace and steelmaking slags and with the most important ways of their utilization. The method of recycling of steelmaking slags, that followed from own experiments of the authors, are described. proposal for way of utilization of one sort of ladle furnace slag is also included. Methods of blast furnace slag treatment can be subdivided into three groups: slag pit process slag granulation process other processes. Steelmaking slags from refining processes both in oxygen converter and in electric arc furnace contain a high portion of refined metallic iron – raw material. The first and very important process of steelmaking slag treatment is to divide the slag into two parts: a metallic one (steel scrap) and a demetallized steelmaking slag one. multistep process of crushing, grinding and electromagnetic separation is utilized for this purpose. Demetallized part of steelmaking slag is utilized in civil engineering, in roads, dams, moles etc. construction. It is used mainly for stabilization of lower parts of soil because of high specific density of steelmaking slag. applications in cement production industry and in treatment of acidic soils are also well – known. The second part of paperdeals with methods of steelmaking slag recycling. this part follows from experiments performed by the authors of the paper. Problems and benefits of the recycling of both oxygen conventer and electric arc furnace slags are discussed. The paper deals with the most important processes used for treatment of blast furnace and steelmaking slags and with the most important ways of their utilization. The method of recycling of steelmaking slags, that followed from own experiments of the authors, are described. Proposal for way of utilization of one sort of ladle furnace slag is also included. Paragraphs related to steelmaking slags are restricted to slags from oxygen converter refining, from electric arc furnace processes and from ladle furnace processes.
Publication details
References11
European Commission, BAT in Production of Pig Iron and Steel, 2004.
Harder,J.: Development of Slag Use in the Cement and Concrete Industry. Global Slag Conference 2004.
Takahashi,T.-Yabuta,K.: New Applications for Iron and Steelmaking Slags. NKK Technical Review no.87,2002. pp.38-44.
Bikubau,M.Ya.: Glass and Ceramics, vol.52, 1995, 1-2, pp.37-40.
Medvedev,E.F.: Glass and Ceramics, vol.55, 1998, 1-2, pp.28-30.
Oliveira da Silveira,M. et al.: La Revue de Métallurgie - CIT, octobre 2004, pp.779
Wyderko,M.-Mihok,L.-Zet,S.-Olejar,M.: Proc. From the Conference Heat Treatment of Iron Ores, Stará Lesná 1989, pp.229-234.
Mihok,L.-Fedicova,D.: Metalurgija 39,2000,2, pp.93-99.
Mihok,L.-Seilerova,K.-Baricova,D.: Archiwum Odlewnictwa 2004, vol.4,13, pp.165
Mihok,L.-Seilerova,K.-Frohlichova,M.: Materials Science (Medziagotyra), vol.11,4,
, pp.320-323.
View or Download full articleAccess options
SWS access login
Login as SWS Scientific CommitteeLogin as SWS Scientific PartnerLogin as SWS AuthorAuthors and approved SWS contributors will read and export their own linked papers after identity matching by SWS profile, email and SGEM GlobalID.
For librarian assistance: [email protected]
Purchase Instant Access
- Article can be downloaded after successful payment.
- Article may be used according to SWS library access terms.
- Article cannot be redistributed.