Slag treatment at Kardemir integrated iron and steel works

Date

2004-11-19

Author

Topkaya, Yavuz Ali
Gunaydin, A

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

150
views

0
downloads

Integrated iron- and steelmaking plants generate large amounts of solid wastes, which are mainly blast furnace and steel furnace slags, dusts, sludges, etc. The main problem faced at Kardemir integrated iron and steel works is with the steelmaking slags, i.e. open-hearth furnace slag and more recently basic oxygen furnaces (BOF) slag. Over the last 50 years of operation, more than 5 million tons of slag has accumulated in the waste stockyard. To make use of this slag, a slag-processing plant came into operation at Kardemir in 1999. In this plant, after crushing and classification of the slag to various sizes, the magnetic particles present in the slag are separated by electromagnets. The magnetic 10-50 mm product of the slag-processing unit is charged to blast furnaces as raw material and the magnetic pieces in the range of 50-500 mm are charged to BOF as scrap. This study was undertaken with the objective of determining the effects of addition of the above-mentioned magnetic products of the slag-processing unit on the operation and performance of the blast furnace and the BOF No magnetic separation is applied to the - 10 mm fraction and this material is added into sinter mix as a source of iron and fluxing materials. A further objective of the study was determination of the effect of addition of the - 10 mm product of the slag-processing unit on the properties of the sinter and use of slag-added sinter on the operation of the blast furnace. The slag-processing unit has been found to be a good solution to the environmental problems created by the accumulated slag. (C) 2003 Elsevier B.V All rights reserved.

Subject Keywords

Geotechnical Engineering and Engineering Geology, Geochemistry and Petrology

URI

https://hdl.handle.net/11511/48793

Journal

INTERNATIONAL JOURNAL OF MINERAL PROCESSING

DOI

https://doi.org/10.1016/j.minpro.2003.08.005

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

An investigation of the relationship between compressive strength and dust generation potential of magnetite pellets SİVRİKAYA, OSMAN; Arol, Ali İhsan (Elsevier BV, 2013-09-10) Iron ore pellets should have sufficient mechanical strengths against degradation at all stages of pellet production in pelletizing plants. Besides the strength, pellets should have less dust emission during operation since the process efficiency and the pelletizing equipments are adversely affected by dust. Dust is also a problem for sintered (product) pellets since they abrade during transportation from pellet production site to the reduction facilities. Sufficient mechanical strength and low dust emission...
Stability Charts for the Collapse of Residual Soil in Karst DRUMM, Eric C.; Akturk, Oezguer; Akgün, Haluk; Tutluoğlu, Levend (American Society of Civil Engineers (ASCE), 2009-07-01) Collapse of the residual soil over bedrock cavities often occurs during construction in karst terrain, particularly when the thickness of the residuum is reduced during excavation. Even if an estimate of the strength of the residual soil is known, uncertainty with respect to the size/geometry of the subterranean voids makes a detailed analysis difficult, and straightforward methods to check the stability are needed. In this study, numerical analyses were performed to develop a stability chart expressed in t...
Ternary-mixture grinding of ceramic raw materials Ipek, H; Ucbas, Y; Hoşten, Çetin (Elsevier BV, 2005-01-01) Batch experiments were carried out on the dry ball milling of commonly used ceramic raw materials quartz, kaolin and feldspar, singly and as ternary mixtures. The modified form of the Charles energy-size reduction equation was used to calculate the energy consumed by each of the components in the mixture. The results confirmed the validity of the mass fraction hypothesis for energy split between the components that had been defined and verified for the binary mixtures of equal-density minerals. The distribu...
Estimation of Hardgrove grindability index of Turkish coals by neural networks Ozbayoglu, Gulhan; ÖZBAYOĞLU, AHMET MURAT; Ozbayoglu, M. Evren (Elsevier BV, 2008-01-31) In this research, different techniques for the estimation of coal HGI values are studied. Data from 163 sub-bituminous coals from Turkey are used by featuring I I coal parameters, which include proximate analysis, group maceral analysis and rank. Nonlinear regression and neural network techniques are used for predicting the HGI values for the specified coal parameters. Results indicate that a hybrid network which is a combination of 4 separate neural networks gave the most accurate HGI prediction and all of...
Performance assessment of cement grout borehole plugs in basalt Akgün, Haluk (Elsevier BV, 1994-01-01) Flow tests have been conducted on expansive cement grout plugs with diameters of 160 mm and 200 mm, and length-to-diameter ratios of one, in boreholes in basalt blocks and in steel pipes. Two types of flow tests have been performed: pseudo-constant head tests and transient pulse tests. Hydration temperatures of cement grout plugs have been monitored in steel pipes with inside diameters ranging from 110 mm to 200 mm. During flow tests, basalt blocks have fractured, presumably due to water injection pressure,...

Citation Formats

Y. A. Topkaya and A. Gunaydin, “Slag treatment at Kardemir integrated iron and steel works,” INTERNATIONAL JOURNAL OF MINERAL PROCESSING, pp. 31–39, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48793.