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| Influence of FeO on softening-melting properties of primary slag under different slag basicity |
| LI Feng-guang1，QI Cheng-lin2，WANG Yu3 |
（1. School of Materials Science and Engineering， Hubei University of Automotive Technology， Shiyan 442000， Hubei， China
2. School of Metallurgical and Ecological Engineering， University of Science and Technology Beijing， Beijing 100083， China
3. Daye Iron Ore Co.， Ltd.， WISCO Resources Group， Huangshi 435006， Hubei， China） |
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Abstract The softening-melting properties of primary slag in BF has an great influence on the adherent dross capability of the copper cooling staves， which may affect the smooth operation in BOF and production safety. The composition ranges of the primary slag were confirmed by anatomy result of the blast furnace， and then the influence of varying[w(FeO)]on the softening-melting properties of primary slag made up by prue regents was investigated. The results show that softening-melting properties of primary slag is influenced tremendously by[w(FeO)]regardless of slag basicity. The softening-melting temperature of primary slag decreases when the[w(FeO)]increases. When the slag basicity of primary slag is 1.3， the primary slag has the lowest softening-melting temperature. Either higher or lower slag basicity is harmful to the stability of slag coating.
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Received: 25 August 2017
Published: 09 April 2018
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2018, Vol. 53 
