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| Effect of K，Na，Cl on softening property of hot blast stove refractory material |
| WU Bing-qiang1，ZHANG Shu-hui1，Lü Qing1，LIU Xiao-jie2，QIE Ya-na1 |
（1. College of Metallurgy and Energy， Key Laboratory of the Ministry of Education for Modern Metallurgy Technology， Hebei United University， Tangshan 063009， Hebei， China
2. School of Materials and Metallurgy， Northeastern University， Shenyang 110819， Liaoning， China） |
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Abstract Based on thermodynamic analysis， the distribution of K，Na and Cl in hot blast stove refractory material were analyzed. Causes of softening contraction of refractory material were studied and measures to avoid softening breakage were put forward. The results show that after seeping into the refractory materials， K and Na react with Al2O3 and SiO2 generating low melting point compound and HCl reacts with Al2O3 to generate gaseous chloride， which is the main cause of refractory materials softening contraction. Refractory materials surface treatment，using low chloride additives in sinter and changing broken bag in time are the main measures to prevent refractory materials from softening.
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Received: 14 May 2014
Published: 13 April 2015
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| [1] |
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| [2] |
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| [3] |
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| [4] |
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| [5] |
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| [6] |
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2015, Vol. 50 
