炼焦煤是我国钢铁工业的基础原料,也是国内市场重要的大宗商品,其质量标准关系到煤炭生产、物流、应用和市场监管各个环节,也关系到中国稀缺炼焦煤资源的充分合理利用问题。GB/T397—2022《商品煤质量炼焦用煤》的发布实施,可为中国炼焦商品煤市场监管提供技术依据,有利于合理评价炼焦煤质量、维护正常的商品煤市场秩序,促进炼焦煤资源的合理开发,达到既满足炼焦煤质量监管要求又能满足焦炭和钢铁工业战略需求的目的。论述中国炼焦煤资源分布与生产以及炼焦煤进口数量和质量总体情况,在此基础上讨论炼焦商品煤质量标准的意义及重点技术内容,并分析炼焦商品煤质量标准历次修订的重点内容,着重讨论关于混配煤界定中镜质体反射率的应用问题,指出利用镜质体反射率变异系数指标鉴别商品煤混配现象,比单纯利用标准差指标更有利于中国稀缺炼焦煤资源的合理充分利用。通过分析镜质体最大反射率和随机反射率测试原理及过程,提出今后商品煤镜质体反射率测试应统一采用镜质体随机反射率指标,以降低测试误差及提高测试效率,从而避免不必要的争议和误导。

Coking coal is the basic raw material of China’ s steel industry and an important commodity in the domes⁃tic market. Its quality standards are related to various aspects like coal production, logistics, application and marketsupervision, as well as the full and rational utilization of China’ s scarce coking coal resources. The implementationof GB / T 397—2022 “Quality of Commercial Coal for Coking” can provide technical basis for the supervision of Chi⁃na’ s coking commodity coal market, which is conducive to the rational evaluation of coking coal quality, maintai⁃ning the normal order of the commodity coal market, promoting the rational development of coking coal resources, a⁃chieving the goal of meeting both the quality supervision requirements of coking coal and the strategic needs of thecoke and steel industries. The distribution and production of coking coal resources in China were discussed, as wellas the overall situation of the quantity and quality of coking coal imports. Based on this, the significance and keytechnical content of coking commodity coal quality standards were discussed too, and the key content of each revisionof coking commodity coal quality standards were analyzed. Focusing on the application of vitrinite reflectance in thedefinition of blended coal, it is pointed out that using the vitrinite reflectance coefficient of variation index to identifythe phenomenon of blended coal in commercial coal is more conducive to the rational and full utilization of China’ sscarce coking coal resources than simply using the standard deviation index. By analyzing the principles and processesof maximum reflectance and random reflectance testing of vitrinite, it is proposed that in the future, vitrinite randomreflectance indicators should be uniformly used for vitrinite reflectance testing of commercial coal to reduce testing er⁃rors and improve testing efficiency, thereby avoiding unnecessary disputes and misleading information.