Experimental Research on Fuel-N Transforming Characteristics of Low-Volatile Coal Under Oxy-Fuel Pyrolysis Conditions. - Hu, Fan; Wu, Xinying; Li, Yuhao; Liao, Haohua; Lou, Xingyu; Ma, Chong; Zhang, Tai; Liu, Zhaohui (Fire (2571-6255), 2026)