煤镜质组平均最大反射率对焦炭热性质影响研究
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摘要
为了研究炼焦煤煤岩指标对焦炭热性质的影响,实现优化炼焦配煤方案和指导炼焦生产的目标,进行了鞍钢常用炼焦煤镜质组平均最大反射率分析和炼焦试验研究。结果表明,鞍钢炼焦用煤单种煤镜质组平均最大反射率与焦炭热性质指标相关性较好,其中与焦炭反应后强度相关性可达0.96,当镜质组平均最大反射率在1.32%～1.37%范围时,所得焦炭热性质较好。当生产用配合煤镜质组平均最大反射率由1.243%提高到1.306%时,活惰比由4.15降低到3.17,焦炭反应性下降1.9个百分点,焦炭反应后强度上升2.4个百分点,焦炭质量显著提高。
In order to study the effect of sintering coal petrography indexes on the thermal properties of coke,achieve the goal of optimizing the coal blending scheme for coking and guiding the coking process,the mean maximum reflectance of vitrinite(■)of the coking coals frequently-used in Ansteel was analyzed and then the studies on coking experiments were carried out.The test results showed that the correlation between ■ and the thermal properties of individual coking coal in Ansteel was good and the correlation coefficient between ■ and the coke strength after reaction was 0.96.When ■ of in dividual cok ing coal was between 1.32%and 1.37%,the thermal properties of the coke were better.When ■ of blended coals in coking process was increased from 1.243%to 1.306%,the ratio of active-inert components was decreased from 4.15 to 3.17.In addition,the coke reactivity was reduced by 1.9%,while the coke strength after reaction was improved by 2.4%.The quality of coke was obviously improved.
In order to study the effect of sintering coal petrography indexes on the thermal properties of coke,achieve the goal of optimizing the coal blending scheme for coking and guiding the coking process,the mean maximum reflectance of vitrinite(■)of the coking coals frequently-used in Ansteel was analyzed and then the studies on coking experiments were carried out.The test results showed that the correlation between ■ and the thermal properties of individual coking coal in Ansteel was good and the correlation coefficient between ■ and the coke strength after reaction was 0.96.When ■ of in dividual cok ing coal was between 1.32%and 1.37%,the thermal properties of the coke were better.When ■ of blended coals in coking process was increased from 1.243%to 1.306%,the ratio of active-inert components was decreased from 4.15 to 3.17.In addition,the coke reactivity was reduced by 1.9%,while the coke strength after reaction was improved by 2.4%.The quality of coke was obviously improved.
引文
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[12]朱晓明,郭海龙.利用煤的镜质组反射率指导配煤炼焦[J].科技研究, 2014(23):694.
[13]薛改凤,项茹,陈鹏,等.单种炼焦煤质量对配煤质量的影响[J].煤炭科学技术, 2007, 35(8):75-79.
[2]庞克亮,刘冬杰,王明国,等.煤岩学在炼焦生产中的应用[J].钢铁, 2015, 50(10):26-29.
[3]庞克亮,刘冬杰,王明国,等.基于煤显微结构的炼焦用煤评价及应用[J].洁净煤技术, 2016, 22(4):85-91.
[4]庞克亮,王超,刘冬杰,等.印尼途琥炼焦煤煤质特性研究[J].鞍钢技术, 2016(4):22-26.
[5]庞克亮,王明国,赵恒波,等.鞍钢鲅鱼圈煤岩配煤技术的开发与应用[J].鞍钢技术, 2015(5):13-16.
[6]田英奇,张卫华,沈寓韬,等.镜质组反射率指导优化配煤炼焦方案的研究[J].煤炭科学技术, 2016, 44(4):162-168.
[7]唐莉.炼焦用单种煤的特性研究及其选择[J].鞍钢技术,2002(1):13-16.
[8]盂敏.炼焦配煤及焦炭质量预测研究现状[J].煤炭加工与综合利用, 2011(1):40-43.
[9]刘尚超,陈鹏,项茹,等.焦炭热性能影响因素分析[J].煤炭科学技术, 2008, 36(5):104-108.
[10]项茹,薛改凤,陈鹏,等.炼焦煤镜质组性质和焦炭结构性能的相关性研究[J].武汉科技大学学报:自然科学版, 2008, 3l(2):151-154.
[11]燕瑞华,高志军,耿印权,等.镜质组反射率分布图在配煤炼焦中的应用[J].燃料与化工, 2001, 32(5):227-230.
[12]朱晓明,郭海龙.利用煤的镜质组反射率指导配煤炼焦[J].科技研究, 2014(23):694.
[13]薛改凤,项茹,陈鹏,等.单种炼焦煤质量对配煤质量的影响[J].煤炭科学技术, 2007, 35(8):75-79.