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| Influence of semi-coke used as sintering fuel on metallurgical properties of sinter |
| YANG Shuang-ping，GUO Shuan-quan，ZHANG Pan-hui，ZHOU Jiang-feng，WANG Miao |
| （Institute of Metallurgical and Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， Shaanxi， China） |
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Abstract Semi-coke used as sintering fuel was studied through the sintering cup experiment， sinter load softening experiments， sinter reduction test and low-temperature sinter reduction powder experiment. Emphasis was mainly focused on the influence of semi-coke substitution ratio on sinter metallurgical properties. The result shows that， the addition of semi-coke and the increase of basicity do not have obvious negative impact on the sinter yield， grade， the drum index and grain size. When the content of semi-coke is 30% and the basicity is 1.82， the drum strength as well as the softening property of sinter can improve. In addition， with the increase of semi-coke replacement ratio， the sinter basicity increases， leading to a decrease of the FeO content in sinter which is helpful for the sinter reducibility and low-temperature reduction disintegration. Considering the roles of semi-coke and alkalinity in sintering process and the influence of sinter metallurgical properties， the application of semi-coke as fuel in sintering process is feasible， and the optimum condition is 30% addition of semi-coke and the basicity of 1.82.
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Received: 29 February 2016
Published: 29 August 2016
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2016, Vol. 51 
