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| Study on Effect of Magnesite on Pellet Roasting Parameters |
| ZHOU Mingshun1,ZHAI Liwei1,LIU Wanshan1,SHANG Ce2,REN Wei1 |
| 1.Angang Steel Company Limited Technology Centre, Anshan 114009, Liaoning, China; 2.Angang Steel Company Limited Ironmaking Plant, Anshan 114009, Liaoning, China |
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Abstract The effect of magnesite addition in acid pellet on roasting process parameters was studied in laborafory. A balltype unsteady conduction differential equation was developed based on Fourier equation and the effect of magnesite addition on pellet heat transfer was analyzed according to finite difference. It was shown that the roasting time of pellets with and without magnesite addition was 9.13 minutes and 8.35 minutes respectively, and it is suggested that the preheating temperature should be increased to make carbonate decomposed fully or the roasting time should be enlongated to realize reasonable roasting.
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Received: 01 January 1900
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2009, Vol. 44 
