钾蒸气对顶装焦与捣固焦劣化的影响
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摘要
为了探究钾蒸气对顶装焦和捣固焦劣化行为的影响,在相同试验条件下向两种焦炭赋相同含量的钾蒸气,研究相同钾蒸气条件下,捣固焦与顶装焦粉化率及热态性能变化的差异。结果表明,在钾蒸气设定量低于5%时,捣固焦的粉化率较高,即钾蒸气对捣固焦结构的直接破坏能力强于顶装焦;在钾蒸气设定量超过5%后,两者相差不大。吸附钾蒸气后,两种焦炭的反应性均随钾蒸气的增多而增强,反应后强度则降低。
To analyze the influence of potassium vapor on degradation of top charged coke and stamp charged coke,the difference of powder ratio and thermal behavior of top charged coke and stamp charged coke under the same potassium vapor condition were investigated by introducing the same content potassium vapor in these two kinds of coke under the same experimental condition.The result indicated that the powder ratio of stamp charged coke was higher when the potassium vapor ratio was less than 5%indicating that the degradation effect of potassium vapor on stamp charged cokes was more obvious than that of top charged coke.However,it was almost the same,when the potassium vapor ratio was above 5%.The reaction property of both coke increased as potassium vapor ratio increased,and the strength after reaction decreased.
To analyze the influence of potassium vapor on degradation of top charged coke and stamp charged coke,the difference of powder ratio and thermal behavior of top charged coke and stamp charged coke under the same potassium vapor condition were investigated by introducing the same content potassium vapor in these two kinds of coke under the same experimental condition.The result indicated that the powder ratio of stamp charged coke was higher when the potassium vapor ratio was less than 5%indicating that the degradation effect of potassium vapor on stamp charged cokes was more obvious than that of top charged coke.However,it was almost the same,when the potassium vapor ratio was above 5%.The reaction property of both coke increased as potassium vapor ratio increased,and the strength after reaction decreased.
引文
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[2]吴启军,段春明,周莹,等.捣固炼焦生产焦炭应用于大高炉的研究[J].燃料与化工,2009,40(3):9.
[3]吕青青,杜屏,周俊兰.高炉块状带焦炭劣化机理[J].钢铁,2016,51(1):13.
[4]黄先佑,王建明,刘文彬,等.降低炼焦配煤成本工业试验[J].中国冶金,2016,26(8):45.
[5]王冲霄.焦炭热反应性能对高炉顺行的影响[J].科技信息:学术研究,2008,27(21):15.
[6]邓守强,裴海玉.焦炭与铁水溶蚀实验研究[J].炼铁,1995,14(1):55.
[7]赵宏博,程树森,余松,等.区分和控制钾、钠对高炉冶炼的不利影响[J].炼铁,2011(1):40.
[8] Vere2J,Lovás M,Jakabsky,et al.Characterization of blast furnace sludge and removal of zinc by microwave assisted extraction[J].Hydrometallurgy,2012,129:67.
[9]赵宏博,蔡皓宇,程树森,等.钾、钠对焦炭劣化作用[J].北京科技大学学报,2013,35(4):438.
[10] Li K,Zhang J,Barati M,et al.Influence of alkaline(Na,K)vapors on carbon and mineral behavior in blast furnace cokes[J].Fuel,2015,145:202.
[11]马超,张建良,庞清海,等.高温捣固焦与顶装焦抗碱性差异研究[J].燃料与化工,2012,43(5):25.
[12] PANG Q,ZHANG J,QI C,et al.K2CO3catalysis on the reactivity of top charged coke and stamp charged coke[J].International Journal of Minerals,Metallurgy,and Materials,2013,20(1):17.
[13] ZHONG J,ZHANG J,LI K,et al.Catalytic behavior of potassium vapor on coke gasification reaction[J].Steel Research International,2017,88(3):160.
[14] ZHONG J,ZHANG J,LI K,et al.The influence of simultaneous adsorption of potassium and sodium vapours on coke structure and performance[J].Ironmaking and Steelmaking,2017,44(1):36.
[15]柏凌,张建良,郭豪,等.高炉内碱金属的富集循环[J].钢铁研究学报,2008,20(9):5.
[16]尹慧超,张建良,王传琳.国丰1号1 780m3高炉锌平衡的研究[J].炼铁,2009,28(3):48.