Maintaining the working profile of blast furnaces during service

Kryachko, G. Yu.; Orel, G. I.; Vasyuchenko, P. A.; Сафина, Л А

doi:10.1007/s11015-006-0018-5

Cited by 7 publications

(1 citation statement)

References 3 publications

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“…However, zinc contamination in the blast furnace can lead to operational issues such as accretions and wear of the refractory lining, so it is limited to 0?3 kg Zn tonne 21 of hot metal. [8][9][10][11] Unfortunately, large quantities of the dust are often stockpiled. Iron can be recovered, and zinc contamination can be removed, in BOS dusts using pyrometallurgical and hydrometallurgical techniques; however, there is an energy, material and process cost associated with these methods.…”

Section: Introductionmentioning

confidence: 99%

Characterisation of BOS steelmaking dust and techniques for reducing zinc contamination

Steer

Grainger

Griffiths

et al. 2013

Ironmaking & Steelmaking

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he basic oxygen steelmaking (BOS) process generates a significant amount of iron bearing dusts, and the recovery of these affects the economics and sustainabiiity of the process. However, zinc contamination of the dust restricts how much can be recovered through the process. An iniine sampling system was used to isokineticaiiy sample primary BOS dust from the slurry pipe of a 248 m^ capacity BOS converter at Tata Steelworks Port Talbot (UK). The process was benchmarked with low galvanised scrap trials and control trials before investigating a new inprocess zinc separation technique. This trial involved holding galvanised scrap in a hot converter purged with nitrogen, to volatilise the zinc from the primary dust system for capture in the secondary dust system, before the blow. Using this technique, the zinc contamination of the primary BOS dust was reduced by up to 52% of the initial zinc mass contained in the galvanised scrap charge.

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Section: Introductionmentioning

confidence: 99%