预热焙烧对球团矿抗压强度影响
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摘要
通过对PMC磁铁矿与司家营两种矿粉按一定配比所造球团进行的预热焙烧试验发现,在预热温度925℃,预热时间15 min时,成品球团矿的抗压强度达到了2 833.61 N/个,在此预热条件下,焙烧温度1 300℃,焙烧时间20 min时,成品球团矿的抗压强度达到了2 872.52 N/个,满足了生产要求。
The effects of preheating roasting on the compressive strength of the pellets made by PMC magnetite powders and Sijiaying iron powders were studied.The results indicate that at the preheat temperature of 925 ℃,the preheating time of 15 min,the compressive strength of the finished pellets is 2 833.61 N.Under the preheating condition,at the roasting temperature of 1300 ℃,the roasting time of 20 min,the compressive strength of the finished pellets reaches 2 872.52 N,which can meet the production requirements.
The effects of preheating roasting on the compressive strength of the pellets made by PMC magnetite powders and Sijiaying iron powders were studied.The results indicate that at the preheat temperature of 925 ℃,the preheating time of 15 min,the compressive strength of the finished pellets is 2 833.61 N.Under the preheating condition,at the roasting temperature of 1300 ℃,the roasting time of 20 min,the compressive strength of the finished pellets reaches 2 872.52 N,which can meet the production requirements.
引文
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[2]Shi Yan,Liu Shi-meng,Hu Chang-qing,et al.Microstructure variation of pellets containing ferrous dust during carbonation consolidation[J].Journal of Iron and Steel Research(International),2015,22(2):128-134.
[3]吕庆,亢立明,刘曙光,等.冀东磁铁精矿球团焙烧机理的研究[J].钢铁研究,2008,36(1):9-10.
[4]刘曙光.冀东铁精矿粉造球、氧化及焙烧机理的研究[D].唐山:河北理工大学,2006.
[5]亢立明,李福民,刘曙光,等.冀东铁精矿的物化性能测试[J].岩矿测试,2007,26(3):201-204.
[6]刘朝卿,刘然,吕庆,等.冀东磁铁精粉球团矿的矿相结构研究[J].钢铁钒钛,2014,35(6):124-125.
[7]王树同,杨李香.杭钢竖炉焙烧过程中球团矿矿相的初步观察分析[J].烧结球团,1982,03(007):37-39.
[8]Li G H,Li X Q,Zhang Y B,et al.Induration mechanisms of oxidised pellets prepared from mixed magnetite-haematite concentrates[J].Ironmaking and Steelmaking,2009,36(5):393-395.
[9]陈耀明,张元波.氧化球团矿结晶规律的研究[J].钢铁研究,2005(3):10-12.
[10]吕庆,亢立明,刘曙光,等.冀东磁铁精矿球团焙烧机理的研究[J].钢铁研究,2008,36(1):9-12.