炼焦煤的煤岩特征对其结焦性质的影响

随着煤岩测定技术的进步 ,炼焦煤的煤岩性质已在炼焦配煤中得到广泛应用 。通过对多种单种煤和配合 煤的煤岩特征以及对应的 40 kg 试验焦炉所炼焦炭的性质进行分析和比较 ,结果表明 :单煤种的 R0max 在 1. 3 %～ 115 %间 ,所炼制焦炭的冷态机械强度 (M40 和 M10) 最好 ,其热性质 (反应性 CRI 和反应后强度 CSR) 也较好 ;配合煤反射率分布图特征越接近正态分布 ,则所炼制的焦炭冷态机械强度 (M40 、M10) 就较好 ,配合煤反射率分布图特 征偏离正态分布越远 ,其焦炭热性质越差 ;40 kg 试验焦炉所得焦炭的反应性 CRI 高 ,其反应后强度 CSR 较低 ,存 在负相关线形关系 。
关键词 : 煤的岩相特征 ; 镜质组平均最大反射率 ; 焦炭强度 ;焦炭反应性 ; 焦炭反应后强度

Effect of Petrographic Properties of Coking Coal
on Qual ity of Metallurgical Coke
ZHAN G Dai2lin , 　YU Liang , 　ZHEN G Ming2dong
(Anhui Key Laboratory of Coal Clean Conversion and Utlization , Anhui University of Technology ,
Ma’anshan 243002 , Anhui , China)
Abstract : With the progress in pet rographic analysis of coal , pet rographic analysis of coking coal is applied abroad in
blending and coking. The maceral properties of single coals and blends were studied ,and quality of cokes made on 40
kg pilot coke oven was analyzed. The result s indicated some relations between maceral properties and quality of
cokes. Firstly ,cold mechanical coke st rength was optimum and thermal quality was also better while mean maximun
vit rinite reflectance of single coal is in the range of 1. 3 %21. 5 %; Secondly , cold mechanical coke st rength and ther2
mal quality were governed by reflectogram of blended coal ; Finally ,the relationship between CRI(coke reactivity in2
dex) and CSR(coke st rength af ter reaction) was of linear negative2correlation.
Key words : coal pet rography ; mean maximun vit rinite reflectance ; coke st rength ; coke reactivity index (CRI) ; coke
st rength af ter reaction (CSR)   螺旋钢管