Hot metal quality in the hearth of an iron making blast furnace

Hot metal quality in the hearth of an iron making blast furnace

Aberkrom, K.J.

Yang, Y. (mentor)
Hage, J.L.T. (mentor)

Civil Engineering and Geosciences

Section Resource Engineering

2011-08-30

After fifteen years of service, blast furnace #7 at IJmuiden’s Tata Steel operation was blown down on the 31st of August in 2006 for a small repair. The blow down and salamander tap were successfully completed and afterwards the furnace was quenched with water. All remaining liquids are solidified followed by excavation of the remaining skull. Copper was added to the last ore dump to distinguish the liquids prior to the quench. Around 300 holes were drilled in the skull, used for explosives. The cores were gathered and used for analysis. Several cores have been analyzed with X-ray fluorescence spectrometry; these rough data were the base of this study. Carbon lamellas were observed in certain areas of the skull. Their formation appears during slowly cooling of flowing hot metal. These lamellas confirm that part of the skull was solid previous to the blow down of blast furnace #7. Radial variation of silicon is not detected. Results do show a distinct boundary, which separates material with different concentrations of copper. This is possibly a result of early solidification of the skull. Confidential report Full version of the thesis can be requested at TATA Steel IJMUIDEN At the RD&T department reference source number: 153291

metallurgy
resource engineering
Applied Earth Sciences

http://resolver.tudelft.nl/uuid:b0c3ab72-fe24-4e12-8237-6b3677e47c16

Student theses

bachelor thesis

(c) 2011 Aberkrom, K.J.