不同炼焦煤成焦光学组织特征及相关研究  

Research on characteristic of coke optical texture from different coking coals

作　　者：洪泽 李成才[1] Hong Ze;Li Chengcai(Coking Plant of Hunan Hualing Lianyuan Iron&Steel Co.,Ltd.,Loudi 417000,China)

机构地区：[1]湖南华菱涟源钢铁有限公司,娄底417000

出　　处：《燃料与化工》2022年第3期5-10,共6页Fuel & Chemical Processes

摘　　要：对涟钢常用炼焦煤和配煤方案的40 kg小焦炉试验焦炭进行冷、热态强度和光学组织分析。结果表明,随着煤变质程度加深,各向异性结构含量先升高后降低,中等变质程度煤成焦各向异性程度最高;纤维结构和片状结构随着煤变质程度加深呈逐步增长趋势;惰性结构随着煤变质程度升高,呈先降低后升高趋势,中等变质程度煤惰性结构含量最低。随着焦炭镶嵌结构比例升高,焦炭冷、热强度指标逐步变好;随着焦炭惰性结构比例升高,焦炭冷、热强度指标劣化。为保证焦炭质量,工业生产中应控制焦炭中惰性结构比例在适宜范围。Analysis was made to the cold & hot strength and optical texture of the coke produced from40 kg pilot oven of Lianyuan Iron & Steel based on commonly used coking coal and blending scheme.The test result indicates that as the degree of coal metamorphism goes further,the anisotropic texture increases first and then decreases,the coke from medium-grade metamorphism coal shows the highest anisotropic degree.Fiber texture and leaflet texture gradually increase with the coal metamorphism.Inert texture decreases first and then increases with the coal metamorphism;the medium-grade metamorphism coal has the lowest content of inert texture.As the proportion of the mosaic texture increases,the cold and hot strength of coke are getting better;with the proportion of coke inert texture increasing,the cold and hot strength of the coke will go worse.In order to ensure coke quality,the proportion of inert texture in coke should be controlled within an appropriate range in production.

关 键 词：炼焦煤 焦炭强度 光学组织 反射率 显微结构 

分 类 号：TQ520.4[化学工程—煤化学工程]